cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5471929
title: A novel Ru/TiO2 hybrid nanocomposite catalyzed photoreduction of CO2 to methanol under visible light

description: A novel in situ synthesized Ru(bpy)3/TiO2 hybrid nanocomposite is developed for the photoreduction ofCO2 into methanol under visible light irradiation. The prepared composite was characterized by means ofSEM, TEM, XRD, DT–TGA, XPS, UV–Vis and FT-IR techniques. The photocatalytic activity of the synthesizedhybrid catalyst was tested for the photoreduction of CO2 under visible light using triethylamineas a sacrificial donor. The methanol yield for the Ru(bpy)3/TiO2 hybrid nanocomposite was found to be1876 μmol g−1 cat (ϕMeOH 0.024 mol Einstein−1) that was much higher in comparison with the in situ synthesizedTiO2, 828 μmol g−1 cat (ϕMeOH 0.010 mol Einstein−1) and the homogeneous Ru(bpy)3Cl2complex, 385 μmol g−1 cat (ϕMeOH 0.005 mol Einstein−1).
DOI: 10.6084/m9.figshare.5471926
title: Visible light assisted hydrogen generation from complete decomposition of hydrous hydrazine using rhodium modified TiO2 photocatalysts

description: Hydrogen is considered to be an ideal energy carrier, which produces only water when combined withoxygen and thus has no detrimental effect on the environment. While the catalytic decomposition ofhydrous hydrazine for the production of hydrogen is well explored, little is known about its photocatalyticdecomposition. The present paper describes a highly efficient photochemical methodology for the productionof hydrogen through the decomposition of aqueous hydrazine using titanium dioxide nanoparticlesmodified with a Rh(I) coordinated catechol phosphane ligand (TiO2–Rh) as a photocatalyst under visiblelight irradiation. After 12 h of visible light irradiation, the hydrogen yield was 413 μmol g−1 cat with a hydrogenevolution rate of 34.4 μmol g−1 cat h−1. Unmodified TiO2 nanoparticles offered a hydrogen yield of83 μmol g−1 cat and a hydrogen evolution rate of only 6.9 μmol g−1 cat h−1. The developed photocatalystwas robust under the experimental conditions and could be efficiently reused for five subsequent runswithout any significant change in its activity. The higher stability of the photocatalyst is attributed to thecovalent attachment of the Rh complex, whereas the higher activity is believed to be due to the synergisticmechanism that resulted in better electron transfer from the Rh complex to the conduction band of TiO2
DOI: 10.6084/m9.figshare.5471923
title: A Prussian blue/carbon dot nanocomposite as an efficient visible light active photocatalyst for C–H activation of amines

description: A Prussian blue/carbon dot (PB/CD) nanocomposite was synthesised and used as a visible-light activephotocatalyst for the oxidative cyanation of tertiary amines to α-aminonitriles by using NaCN/acetic acidas a cyanide source and H2O2 as an oxidant. The developed photocatalyst afforded high yields of productsafter 8 h of visible light irradiation at room temperature. The catalyst was recycled and reused severaltimes without any significant loss in its activity.
DOI: 10.6084/m9.figshare.5471926.v1
title: Visible light assisted hydrogen generation from complete decomposition of hydrous hydrazine using rhodium modified TiO2 photocatalysts

description: Hydrogen is considered to be an ideal energy carrier, which produces only water when combined withoxygen and thus has no detrimental effect on the environment. While the catalytic decomposition ofhydrous hydrazine for the production of hydrogen is well explored, little is known about its photocatalyticdecomposition. The present paper describes a highly efficient photochemical methodology for the productionof hydrogen through the decomposition of aqueous hydrazine using titanium dioxide nanoparticlesmodified with a Rh(I) coordinated catechol phosphane ligand (TiO2–Rh) as a photocatalyst under visiblelight irradiation. After 12 h of visible light irradiation, the hydrogen yield was 413 μmol g−1 cat with a hydrogenevolution rate of 34.4 μmol g−1 cat h−1. Unmodified TiO2 nanoparticles offered a hydrogen yield of83 μmol g−1 cat and a hydrogen evolution rate of only 6.9 μmol g−1 cat h−1. The developed photocatalystwas robust under the experimental conditions and could be efficiently reused for five subsequent runswithout any significant change in its activity. The higher stability of the photocatalyst is attributed to thecovalent attachment of the Rh complex, whereas the higher activity is believed to be due to the synergisticmechanism that resulted in better electron transfer from the Rh complex to the conduction band of TiO2
DOI: 10.6084/m9.figshare.5471917
title: Graphene oxide grafted with iridium complex as a superior heterogeneous catalyst for chemical fixation of carbon dioxide to dimethylformamide

description: A novel graphene oxide (GO)-immobilized heteroleptic iridium complex was synthesized and demonstratedas a first heterogenized homogeneous catalyst for the production of dimethylformamide (DMF)from carbon dioxide, hydrogen, and dimethylamine. The synthesized hybrid catalyst showed comparableactivity as homogeneous heteroleptic iridium complex with additional benefits such as facile recoveryand recycling of the catalyst. After completion of the reaction, the heterogeneous catalyst was easilyrecovered by filtration, and reused for subsequent recycling processes without any significant change inthe catalytic efficiency.
DOI: 10.6084/m9.figshare.5471920
title: Photocatalytic reduction of carbon dioxide to methanol using a ruthenium trinuclear polyazine complex immobilized on graphene oxide under visible light irradiation

description: A ruthenium trinuclear polyazine complex was synthesized and subsequently immobilized throughcomplexation to a graphene oxide support containing phenanthroline ligands (GO-phen). The developedphotocatalyst was used for the photocatalytic reduction of CO2 to methanol, using a 20 watt white coldLED flood light, in a dimethyl formamide–water mixture containing triethylamine as a reductivequencher. After 48 h illumination, the yield of methanol was found to be 3977.57 5.60 mmol gcat 1.The developed photocatalyst exhibited a higher photocatalytic activity than graphene oxide, whichprovided a yield of 2201.40 8.76 mmol gcat 1. After the reaction, the catalyst was easily recovered andreused for four subsequent runs without a significant loss of catalytic activity and no leaching of themetal/ligand was detected during the reaction.
DOI: 10.6084/m9.figshare.5471962.v1
title: Naturaliste Plateau: constraints on the timing and evolution of the Kerguelen Large Igneous province and its role in Gondwana breakup

description: Volcanism associated with the Kerguelen Large Igneous Province is found scattered in southwestern Australia (the <i>ca</i> 136 to <i>ca</i> 130 Ma Bunbury Basalts, and <i>ca</i> 124 Ma Wallaby Plateau), India (<i>ca</i> 118 Ma Rajmahal Traps and Cona Basalts), and Tibet (the <i>ca</i> 132 Ma Comei Basalts), but apart from the ∼70 000 km<sup>2</sup> Wallaby Plateau, these examples are spatially and volumetrically minor. Here, we report dredge, geochronological and geochemical results from the ∼90 000 km<sup>2</sup> Naturaliste Plateau, located ∼170 to ∼500 km southwest of Australia. Dredged lavas and intrusive rocks range from mafic to felsic compositions, and prior geophysical analyses indicate these units comprise much of the plateau substrate. <sup>40</sup>Ar/<sup>39</sup>Ar plagioclase ages from mafic units and U–Pb zircon ages from silicic rocks indicate magmatic emplacement from 130.6 ± 1.2 to 129.4 ± 1.3 Ma for mafic rocks and 131.8 ± 3.9 to 128.2 ± 2.3 Ma for silicic rocks (2σ). These Cretaceous Naturaliste magmas incorporated a significant component of continental crust, with relatively high <sup>87</sup>Sr/<sup>86</sup>Sr (up to 0.78), high <sup>207</sup>Pb/<sup>204</sup> Pb ratios (15.5–15.6), low <sup>143</sup>Nd/<sup>144</sup>Nd (0.511–0.512) and primitive-mantle normalised Th/Nb of 11.3 and La/Nb of 3.97. These geochemical results are consistent with the plateau being underlain by continental basement, as indicated by prior interpretations of seismic and gravity data, corroborated by dredging of Mesoproterozoic granites and gneisses on the southern plateau flank. The Cretaceous Naturaliste Plateau igneous rocks have signatures indicative of extraction from a depleted mantle, with trace-element and isotopic values that overlap with Kerguelen Plateau lavas reflect crustal contamination. Our chemical and geochronological results therefore show the Naturaliste Plateau contains evidence of an extensive igneous event representing some of the earliest voluminous Kerguelen hotspot magmas. Prior work reports that contemporaneous correlative volcanic sequences underlie the nearby Mentelle Basin, and the Enderby Basin and Princess Elizabeth Trough in the Antarctic. When combined, the igneous rocks in the Naturaliste, Mentelle, Wallaby, Enderby, Princess Elizabeth, Bunbury and Comei-Cona areas form a 136–124 Ma Large Igneous Province covering &gt;244 000 km<sup>2</sup>.
DOI: 10.6084/m9.figshare.5471923.v1
title: A Prussian blue/carbon dot nanocomposite as an efficient visible light active photocatalyst for C–H activation of amines

description: A Prussian blue/carbon dot (PB/CD) nanocomposite was synthesised and used as a visible-light activephotocatalyst for the oxidative cyanation of tertiary amines to α-aminonitriles by using NaCN/acetic acidas a cyanide source and H2O2 as an oxidant. The developed photocatalyst afforded high yields of productsafter 8 h of visible light irradiation at room temperature. The catalyst was recycled and reused severaltimes without any significant loss in its activity.
DOI: 10.6084/m9.figshare.5471917.v1
title: Graphene oxide grafted with iridium complex as a superior heterogeneous catalyst for chemical fixation of carbon dioxide to dimethylformamide

description: A novel graphene oxide (GO)-immobilized heteroleptic iridium complex was synthesized and demonstratedas a first heterogenized homogeneous catalyst for the production of dimethylformamide (DMF)from carbon dioxide, hydrogen, and dimethylamine. The synthesized hybrid catalyst showed comparableactivity as homogeneous heteroleptic iridium complex with additional benefits such as facile recoveryand recycling of the catalyst. After completion of the reaction, the heterogeneous catalyst was easilyrecovered by filtration, and reused for subsequent recycling processes without any significant change inthe catalytic efficiency.
DOI: 10.6084/m9.figshare.5471962.v3
title: Naturaliste Plateau: constraints on the timing and evolution of the Kerguelen Large Igneous Province and its role in Gondwana breakup

description: Volcanism associated with the Kerguelen Large Igneous Province is found scattered in southwestern Australia (the <i>ca</i> 136 to <i>ca</i> 130 Ma Bunbury Basalts, and <i>ca</i> 124 Ma Wallaby Plateau), India (<i>ca</i> 118 Ma Rajmahal Traps and Cona Basalts), and Tibet (the <i>ca</i> 132 Ma Comei Basalts), but apart from the ∼70 000 km<sup>2</sup> Wallaby Plateau, these examples are spatially and volumetrically minor. Here, we report dredge, geochronological and geochemical results from the ∼90 000 km<sup>2</sup> Naturaliste Plateau, located ∼170 to ∼500 km southwest of Australia. Dredged lavas and intrusive rocks range from mafic to felsic compositions, and prior geophysical analyses indicate these units comprise much of the plateau substrate. <sup>40</sup>Ar/<sup>39</sup>Ar plagioclase ages from mafic units and U–Pb zircon ages from silicic rocks indicate magmatic emplacement from 130.6 ± 1.2 to 129.4 ± 1.3 Ma for mafic rocks and 131.8 ± 3.9 to 128.2 ± 2.3 Ma for silicic rocks (2σ). These Cretaceous Naturaliste magmas incorporated a significant component of continental crust, with relatively high <sup>87</sup>Sr/<sup>86</sup>Sr (up to 0.78), high <sup>207</sup>Pb/<sup>204</sup> Pb ratios (15.5–15.6), low <sup>143</sup>Nd/<sup>144</sup>Nd (0.511–0.512) and primitive-mantle normalised Th/Nb of 11.3 and La/Nb of 3.97. These geochemical results are consistent with the plateau being underlain by continental basement, as indicated by prior interpretations of seismic and gravity data, corroborated by dredging of Mesoproterozoic granites and gneisses on the southern plateau flank. The Cretaceous Naturaliste Plateau igneous rocks have signatures indicative of extraction from a depleted mantle, with trace-element and isotopic values that overlap with Kerguelen Plateau lavas reflect crustal contamination. Our chemical and geochronological results therefore show the Naturaliste Plateau contains evidence of an extensive igneous event representing some of the earliest voluminous Kerguelen hotspot magmas. Prior work reports that contemporaneous correlative volcanic sequences underlie the nearby Mentelle Basin, and the Enderby Basin and Princess Elizabeth Trough in the Antarctic. When combined, the igneous rocks in the Naturaliste, Mentelle, Wallaby, Enderby, Princess Elizabeth, Bunbury and Comei-Cona areas form a 136–124 Ma Large Igneous Province covering &gt;244 000 km<sup>2</sup>.
DOI: 10.6084/m9.figshare.5471962
title: Naturaliste Plateau: constraints on the timing and evolution of the Kerguelen Large Igneous Province and its role in Gondwana breakup

description: Volcanism associated with the Kerguelen Large Igneous Province is found scattered in southwestern Australia (the <i>ca</i> 136 to <i>ca</i> 130 Ma Bunbury Basalts, and <i>ca</i> 124 Ma Wallaby Plateau), India (<i>ca</i> 118 Ma Rajmahal Traps and Cona Basalts), and Tibet (the <i>ca</i> 132 Ma Comei Basalts), but apart from the ∼70 000 km<sup>2</sup> Wallaby Plateau, these examples are spatially and volumetrically minor. Here, we report dredge, geochronological and geochemical results from the ∼90 000 km<sup>2</sup> Naturaliste Plateau, located ∼170 to ∼500 km southwest of Australia. Dredged lavas and intrusive rocks range from mafic to felsic compositions, and prior geophysical analyses indicate these units comprise much of the plateau substrate. <sup>40</sup>Ar/<sup>39</sup>Ar plagioclase ages from mafic units and U–Pb zircon ages from silicic rocks indicate magmatic emplacement from 130.6 ± 1.2 to 129.4 ± 1.3 Ma for mafic rocks and 131.8 ± 3.9 to 128.2 ± 2.3 Ma for silicic rocks (2σ). These Cretaceous Naturaliste magmas incorporated a significant component of continental crust, with relatively high <sup>87</sup>Sr/<sup>86</sup>Sr (up to 0.78), high <sup>207</sup>Pb/<sup>204</sup> Pb ratios (15.5–15.6), low <sup>143</sup>Nd/<sup>144</sup>Nd (0.511–0.512) and primitive-mantle normalised Th/Nb of 11.3 and La/Nb of 3.97. These geochemical results are consistent with the plateau being underlain by continental basement, as indicated by prior interpretations of seismic and gravity data, corroborated by dredging of Mesoproterozoic granites and gneisses on the southern plateau flank. The Cretaceous Naturaliste Plateau igneous rocks have signatures indicative of extraction from a depleted mantle, with trace-element and isotopic values that overlap with Kerguelen Plateau lavas reflect crustal contamination. Our chemical and geochronological results therefore show the Naturaliste Plateau contains evidence of an extensive igneous event representing some of the earliest voluminous Kerguelen hotspot magmas. Prior work reports that contemporaneous correlative volcanic sequences underlie the nearby Mentelle Basin, and the Enderby Basin and Princess Elizabeth Trough in the Antarctic. When combined, the igneous rocks in the Naturaliste, Mentelle, Wallaby, Enderby, Princess Elizabeth, Bunbury and Comei-Cona areas form a 136–124 Ma Large Igneous Province covering &gt;244 000 km<sup>2</sup>.
DOI: 10.6084/m9.figshare.5471962.v2
title: Naturaliste Plateau: constraints on the timing and evolution of the Kerguelen Large Igneous Province and its role in Gondwana breakup

description: Volcanism associated with the Kerguelen Large Igneous Province is found scattered in southwestern Australia (the <i>ca</i> 136 to <i>ca</i> 130 Ma Bunbury Basalts, and <i>ca</i> 124 Ma Wallaby Plateau), India (<i>ca</i> 118 Ma Rajmahal Traps and Cona Basalts), and Tibet (the <i>ca</i> 132 Ma Comei Basalts), but apart from the ∼70 000 km<sup>2</sup> Wallaby Plateau, these examples are spatially and volumetrically minor. Here, we report dredge, geochronological and geochemical results from the ∼90 000 km<sup>2</sup> Naturaliste Plateau, located ∼170 to ∼500 km southwest of Australia. Dredged lavas and intrusive rocks range from mafic to felsic compositions, and prior geophysical analyses indicate these units comprise much of the plateau substrate. <sup>40</sup>Ar/<sup>39</sup>Ar plagioclase ages from mafic units and U–Pb zircon ages from silicic rocks indicate magmatic emplacement from 130.6 ± 1.2 to 129.4 ± 1.3 Ma for mafic rocks and 131.8 ± 3.9 to 128.2 ± 2.3 Ma for silicic rocks (2σ). These Cretaceous Naturaliste magmas incorporated a significant component of continental crust, with relatively high <sup>87</sup>Sr/<sup>86</sup>Sr (up to 0.78), high <sup>207</sup>Pb/<sup>204</sup> Pb ratios (15.5–15.6), low <sup>143</sup>Nd/<sup>144</sup>Nd (0.511–0.512) and primitive-mantle normalised Th/Nb of 11.3 and La/Nb of 3.97. These geochemical results are consistent with the plateau being underlain by continental basement, as indicated by prior interpretations of seismic and gravity data, corroborated by dredging of Mesoproterozoic granites and gneisses on the southern plateau flank. The Cretaceous Naturaliste Plateau igneous rocks have signatures indicative of extraction from a depleted mantle, with trace-element and isotopic values that overlap with Kerguelen Plateau lavas reflect crustal contamination. Our chemical and geochronological results therefore show the Naturaliste Plateau contains evidence of an extensive igneous event representing some of the earliest voluminous Kerguelen hotspot magmas. Prior work reports that contemporaneous correlative volcanic sequences underlie the nearby Mentelle Basin, and the Enderby Basin and Princess Elizabeth Trough in the Antarctic. When combined, the igneous rocks in the Naturaliste, Mentelle, Wallaby, Enderby, Princess Elizabeth, Bunbury and Comei-Cona areas form a 136–124 Ma Large Igneous Province covering &gt;244 000 km<sup>2</sup>.
DOI: 10.6084/m9.figshare.5471911
title: Core–shell structured reduced graphene oxide wrapped magneticallyseparable rGO@CuZnO@Fe3O4microspheres as superior photocatalystfor CO2reduction under visible light

description: A highly efficient, recyclable and magnetically separable core-shell structured CuZnO@Fe3O4microspherewrapped with reduced graphene oxide (rGO@CuZnO@Fe3O4) photocatalyst has been developed and usedfor the photoreduction of carbon dioxide with water to produce methanol under visible light irradiation.Owing to the synergistic effect of the components and to the presence of a thin Fe2O3layer on Fe3O4,rGO@CuZnO@Fe3O44 exhibited higher catalytic activity as compared to the other possible combinationssuch as CuZnO@Fe3O42 and GO@CuZnO@Fe3O43 microspheres. The yield of methanol in case of using2 and 3 as photocatalyst was found to be 858 and 1749 mol g−1cat, respectively. However, the yieldwas increased to 2656 mol g−1cat when rGO@CuZnO@Fe3O44 was used as photocatalyst under sim-ilar experimental conditions. This superior photocatalytic activity of 4 was assumed to be due to therestoration of the sp2hybridized aromatic system in rGO, which facilitated the movement of electronsand resulted in better charge separation. The synthesized heterogeneous photocatalyst could readily berecovered by external magnet and successfully reused for six subsequent cycles without significant lossin the product yield.
DOI: 10.6084/m9.figshare.5471899
title: Visible light driven photocatalytic oxidation of thiols to disulfides using iron phthalocyanine immobilized on graphene oxide as a catalyst under alkali free conditions

description: The present paper describes the synthesis of graphene oxide immobilized iron phthalocyanine (FePc) forthe photocatalytic oxidation of thiols to disulfides under alkaline free conditions. Iron phthalocyaninetetrasulfonamide was immobilized on carboxylated graphene oxide supports via covalent attachment.The loading of FePc on GO nanosheets was confirmed by FTIR, Raman, ICP-AES, UV-Vis and elementalanalyses. The synthesized catalyst was found to be highly efficient for the photo-oxidation of thiols todisulfides in aqueous medium using molecular oxygen as oxidant under visible light irradiation. Theidentification of photo-oxidation products and their quantitative determination was done using GC-MS.After completion of the reaction, the catalyst was easily recovered by filtration and reused for severalruns without loss in activity and no leaching was observed during the reaction
DOI: 10.6084/m9.figshare.5471899.v1
title: Visible light driven photocatalytic oxidation of thiols to disulfides using iron phthalocyanine immobilized on graphene oxide as a catalyst under alkali free conditions

description: The present paper describes the synthesis of graphene oxide immobilized iron phthalocyanine (FePc) forthe photocatalytic oxidation of thiols to disulfides under alkaline free conditions. Iron phthalocyaninetetrasulfonamide was immobilized on carboxylated graphene oxide supports via covalent attachment.The loading of FePc on GO nanosheets was confirmed by FTIR, Raman, ICP-AES, UV-Vis and elementalanalyses. The synthesized catalyst was found to be highly efficient for the photo-oxidation of thiols todisulfides in aqueous medium using molecular oxygen as oxidant under visible light irradiation. Theidentification of photo-oxidation products and their quantitative determination was done using GC-MS.After completion of the reaction, the catalyst was easily recovered by filtration and reused for severalruns without loss in activity and no leaching was observed during the reaction
DOI: 10.6084/m9.figshare.5471836
title: 16S rRNA dataset from PHACE

description: Raw sequence data from soils collected during the PHACE experiment just east of Cheyenne, WY.<br>
DOI: 10.6084/m9.figshare.5471824
title: Low Input Sequencing FastQ data set

description: FastQ files with preserved headers containing channel information. The multiple files must first be combined into a single FastQ file prior to analysis (e.g., cat *.fastq &gt; all_reads.fastq). <br>Concatenated md5: 853cd6b8804deb54ddf5ace23bd65f6c<br>2 pg of <i>B. subtilis</i> DNA, quantified using ddPCR, prepared with 1000 ng of Lambda DNA using the Oxford Nanopore Technologies ligation sequencing kit - LSK-SQK108.<br>The library was then sequenced on a MinION Mark-1B sequencer and R9.4 flowcell for 48 hours and basecalled using ONTs MinKnow 1.5.18 live basecaller.<br><br>
DOI: 10.6084/m9.figshare.5471827
title: Dataset for: Exponential decay for binary time-varying covariates in Cox models

description: Cox models are commonly used in the analysis of time to event data. One advantage of Cox models is the ability to include time-varying covariates, often a binary covariate that codes for the occurrence of an event that affects an individual subject. A common assumption in this case is that the effect of the event on the outcome of interest is constant and permanent for each subject. In this paper we propose a modification to the Cox model to allow the influence of an event to exponentially decay over time. Methods for generating data using the inverse cumulative density function for the proposed model are developed. Likelihood ratio tests and AIC are investigated as methods for comparing the proposed model to the commonly used permanent exposure model. A more general model proposed by Cox and Oakes [1] is also discussed. A simulation study is performed and three different data sets are presented as examples.