bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Tween 80 on the Electrocatalytic Performance of a Ti/PbO2‐MWCNTs Electrode
Authors: Zhu Wei , Chen Zhen , Yu Qiang , Guo Zhongcheng , Li Shuting , Li Huixi 
Published: October 2024

AbstractIn this work, Ti/PbO2‐MWCNTs anodes modified with different amount with different amount of Tween 80 (0.0–2.0 g/L) were prepared by the direct current electrodeposition method used as anode materials for Zinc electrowinning. The MWCNTs were dispersed in a lead nitrate solution with Tween 80, and the effects of the amount of added Tween 80 on the morphology, phase composition and electrocatalytical performance of lead dioxide coating were investigated. Physical characterizations show that with the increase of the amount of Tween 80, both grain size of PbO2 and carbon content in PbO2 layer firstly increased and then decreased, the preferential orientation and crystallinity of the PbO2 grain growth in the deposition process changed. Electrochemical tests demonstrate that the optimal modified electrode achieved the minimum Eo value and maximum j0 of 2.038 V and 3.781×10−4 A, respectively, an increase of capacitance to 368.8 μF cm−2, and a decrease of charge transfer resistance to 92.74 Ω cm2, which is mainly attributed to the PbO2 electrode modified with Tween 80, coupled with the synergistic effects of MWCNTs doping.
Piezoelectric Energy Harvesting in Poly(vinylidene Fluoride‐co‐hexafluoropropylene)/Barium Titanate Nanofibers and Ultrasonic Assisted Piezocatalytic Degradation of Ciprofloxacin
Authors: C Joelin. , Praba Lakshmi , Kuppusamy Satheesh , R Tamilarasi. , R Magesh. , Woong Jung Jae , Deivasigamani Prabhakaran , Vidhya B. , Sakunthala A. , Rajesh S. 
Published: October 2024

AbstractAn innovative approach has been adopted through the synthesis of a cost‐effective ferroelectric host polymer, which was integrated with Barium Titanate (BaTiO3) to develop an efficient electrospun Polyvinylidene Fluoride‐Hexafluoropropylene/BaTiO3 (PVdF‐HFP/BaTiO3) nanocomposite (PBT), designated for energy harvesting and piezocatalytic applications. FT‐IR affirmed the existence of the crystalline β‐phase within the nanofibers. SEM images showed that nanofiber diameter decreases as applied voltage is increased in electrospinning. The BaTiO3 nanoparticles were scattered evenly in PBT, but at lower voltages, they aggregate. PBT showed enhanced piezoelectric performance under higher voltage conditions, registering a maximum piezoelectric output of ~7.7 V and an output current of 0.77 μA. Moreover, the composite exhibited a power density of 14.15 mW/m2 at a load resistance of 20 MΩ. Fabricated piezoelectric nanogenerator (PENG) demonstrated practical utility in flexible electronics, notably in charging capacitors of 0.47 μF and 1 μF. Additionally, the piezocatalytic degradation of the antibiotic ciprofloxacin (CIP) was effectively achieved using the electrospun nanofibers, with an impressive degradation rate of up to 99.6 % within 30 minutes under acidic conditions, and the material displayed notable reusability, maintaining up to 95.5 % efficiency after five cycles. DFT calculations and COMSOL simulations alongside a comparative examination of the electronic properties of PBT.
Green Synthesis of Silver and Copper Nanoparticles Using Parthenium hysterophorus: Antibacterial, Antioxidant, and Anticancer Properties
Authors: Ullah Ihsan , Ullah Amin , Al‐Qaaneh Ayman M. , Aman Komal , Bekhit Mounir M. , Ullah Izzat , Zengin Gokhan , Farid Arshad 
Published: October 2024

AbstractNanoparticles (NPs) have gained attention for their unique properties and potential applications, particularly in medicine. This study aim to investigate the green synthesis of silver and copper nanoparticles (NPs) using Parthenium hestephorus extract and evaluate their biological activities. The synthesized NPs were characterized using various analytical techniques, such as UV‐Vis spectroscopy, which confirmed the successful synthesis of silver and copper nanoparticles, with characteristic absorption peaks observed at 450 nm and 580 nm, respectively. Fourier‐transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD), scanning electron microscopy (SEM), and energy‐dispersive X‐ray spectroscopy (EDX) were also conducted. In antimicrobial evaluations, the silver and copper nanoparticles exhibited notable inhibitory zones ranging from 12–18 mm against Staphylococcus aureus and 27–30 mm against Escherichia coli bacteria. Furthermore, the nanoparticles’ potential as anticancer agents were tested on HepG2 human cancer cells using the MTT assay. The silver, copper nanoparticles, and control exhibited dose‐dependent cytotoxicity, with IC50 values of 35 μg/mL, 50 μg/ml, and 30 μg/ml, respectively, suggesting their promise in cancer treatment. Antioxidant activity was demonstrated through free radical scavenging assays, with silver and copper nanoparticles showing significant potential, inhibiting free radicals by 80 %, 70 %, and 90 %, respectively. It is concluded that the green synthesis of silver and copper nanoparticles using extract of Parthenium hestephorus presents an efficient and sustainable method for generating NPs with potent antibacterial, anticancer, and antioxidant capabilities.
Application of Albumin in Nanodrugs for Cancer Therapy
Authors: Li Shangshang , Xue Yunxin , Mao Chun , Wan Mimi , Zhang Shirong 
Published: October 2024

AbstractAlbumin, as a natural polymer, offers the advantages of non‐toxicity, degradability, and biocompatibility. It is widely used in formulating nanomedicines for cancer treatment. In this review, we introduce the methods and drawbacks of albumin nanoparticles when albumin is utilized as a drug carrier. We summarize the advantages of albumin nanoparticles in cancer treatment, discuss the surface modification of nanoparticles such as gold nanoparticles and magnetic nanoparticles by coating albumin as a functional group, and focus on the new properties of nanoparticles imparted by in vitro prefabrication of protein crowns. Additionally, we elaborate on the application of albumin in cancer vaccines. Finally, the challenges and future trends of albumin‐based nanodrugs in cancer therapy are presented.
Investigating the Synergistic Effects of Nano CeO2 and Pr2O3 Rare Earth Element Oxides as Fertilizers on the Growth of Salvia Miltiorrhiza Bunge
Authors: Tung Mai Hung Thanh , Hien Tran Thi Thu , Sharmaa Ajit , Cam Nguyen Thi Dieu , Manh Nguyen Van , Khan Dinh Thanh , Son Nguyen Le Truong , Chi Nguyen Thi Phuong Le , Ha Dang Thi Ngoc 
Published: October 2024

AbstractThe study aims to synthesize nano CeO2 and Pr2O3 materials to use as fertilizer for cultivation of the Salvia miltiorrhiza Bunge, which is also known as Danshen, an important medicinal plant in many Asian countries. The extraction experiments were also conducted to determine tanshinone IIA contents in the Danshen root to acutely explore effects of the nano‐materials on accumulation of valuable medicine in the plant. The obtained results indicated that nano CeO2 and Pr2O3 applications significantly induced both growth and tanshinone IIA contents of the Danshen. Firstly, the CeO2 application greatly induced side branch and root development of the Danshen rather than the height of the plant, while the Pr2O3 application greatly induced plant height and root growth of the Danshen rather than side branch development. In comparison, the CeO2 effectively induced root growth and tanshinone IIA content in the Danshen rather than the Pr2O3 did. Finally, simultaneous applications of nano Pr2O3 and CeO2 revealed synergic effects to greatly promote the growth of the Danshen. The tanshinone IIA content extracted from the roots of the mixture Pr2O3 and CeO2 exposed Danshen was approximately 0.4318 %, which was higher than those of single CeO2 and Pr2O3 exposed plants.
Al‐doped Mixed Transition Metal Ferrites Synthesis and Application in Adsorption of Dyes
Authors: Ayoub Mehnaz , Dosanjh Harmanjit Singh 
Published: October 2024

AbstractThis paper presents the preparation of Al‐doped mixed transition metal ferrite (AlxCo0.7Mn0.3Fe2−xO4 where x=0.1, 0.3, 0.5, 0.7 and 0.9) via a solution combustion method, followed by an application for the removal of dyes from aqueous solution. Various physicochemical techniques were employed to determine the morphological, structural, magnetic behaviour and adsorption characteristics of the synthesized ferrites by through Scanning Electron Microscope (SEM), X‐ray powder Diffraction (XRD), Fourier Transform Infra‐Red spectroscopy (FT‐IR), Vibrating Sample Magnetometer (VSM), and Brunauer‐Emmett‐Teller (BET) analysis. Furthermore, the as‐synthesized ferrite materials were utilized for adsorbing dyes (Methylene blue (MB), Crystal violet (CV), Methyl orange (MO), and Congo red (CR)) from aqueous solutions, with the results reported using UV‐visible spectroscopy. The findings indicate that Al‐doped mixed transition metal ferrites serve as potential adsorbents for dye removal.
A Honeycomb Layered Na2SnO3 as Novel Photocatalyst for Degradation of Rose Bengal Dye
Authors: Kamble Ajit J. , Vhangutte Pravin P. , Madhale Ruth A. , Bhange Pallavi D. , Patil Shivajirao R. , Bhange Deu S. 
Published: October 2024

AbstractA layered Na2SnO3 with honeycomb structure was synthesized by solid state route using sodium carbonate and tin oxide. The prepared sample was characterized by different physicochemical characterization techniques like X‐ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X‐ray spectroscopy (EDS), X‐ray photoelectron spectroscopy (XPS), ultraviolet visible spectroscopy (UV–vis), photoluminescence spectra (PL), N2 adsorption technique (Brunauer–Emmett–Teller, electrochemical impedance spectroscopy (EIS). The photodegradation of rose bengal dye under UV light was studied. Due to honeycomb structure and high surface area of Na2SnO3, the complete degradation of rose Bengal was observed in 90 min under UV light irradiation. Results of photocatalytic dye degradation reaction demonstrated that Na2SnO3 can be employed as photocatalyst under UV light irradiation.
Patterns and transitions of posttraumatic stress symptoms and posttraumatic growth in trauma‐exposed youth: A latent transition analysis
Authors: Wan Jiachen , Cao Chengqi , Fang Ruojiao , Chen Chen , Wang Li 
Published: October 2024

AbstractThe present study examined the transition patterns in latent classes of Post‐traumatic stress disorder (PTSD) and post‐traumatic growth among a sample of youth 4–13 months after an explosion accident in China. Latent profile analyses identified consistent three classes (Resilient, Growing, and High‐Symptom) at both waves. Latent transition analysis found most Resilient individuals remained stable while most Growing and High‐symptom individuals transferred. Logistic regression predicting transition pathways suggests younger individuals, males, and those who lack social support are prone to experience reduced post‐traumatic growth, whereas individuals with higher trauma exposure are prone to develop PTSD. Our study provides empirical evidence supporting qualitative transitions in PTSD and post‐traumatic growth levels from a person‐centred perspective. This adds to the current knowledge on the heterogeneity of post‐traumatic responses of human beings and offers valuable guidance for post‐traumatic interventions among youths.
Promoted Two‐Step Ammonia Synthesis with CoOOH/Co foam at Ampere‐Level Current Density and Nearly 100% Faraday Efficiency from Air and Water
Authors: Li Hong‐Rui , Yi Jian‐Hui , Kang Xia , Shi Miao‐Miao , Gao Rui , Bi Bo , Yan Jun‐Min , Jiang Qing 
Published: October 2024

AbstractAmmonia (NH3) is regarded as an essential hydrogen storage material in the new energy field, and plasma‐electrocatalytic synthesis of NH3 (PESA) is an alternative to the traditional Haber–Bosch process. Here, a bifunctional catalyst CoOOH/CF is proposed to enhance the PESA process. Benefiting from the efficient activation of O2 by CoOOH/CF, NOx− yield rate can reach the highest value of 171.90 mmol h−1 to date. Additionally, CoOOH holds a more negative d‐band center, thereby exhibiting weaker adsorption toward NO*, lowering the energy barrier for the rate determining step, resulting in a high NH3 yield rate (302.55 mg h−1 cm−2 at −0.8 V) with ampere‐level NH3 current density (2.86 A cm−2 at −0.8 V) and nearly 100% Faraday efficiency (FE, 99.8% at −0.6 V). Moreover, CoOOH/CF achieves an excellent 4.54 g h−1 NH3 yield rate with 97.9% FE in an enlarged electrolyzer, demonstrating the feasibility of PESA on a large scale.
Fabrication of Microstructured Hydrogels via Dehydration for On‐Demand Applications
Authors: Zhu Pang , Surendra Yasindu Wickrama , Nekoonam Niloofar , Aziz Soroush , Hou Peilong , Bhagwat Sagar , Song Qingchuan , Helmer Dorothea , Rapp Bastian E. 
Published: October 2024

AbstractMicrostructured hydrogels show promising applications in various engineering fields from micromolds to anisotropic wetting surfaces and microfluidics. Although methods like molding by, e.g., casting as well as 3D printing are developed to fabricate microstructured hydrogels, developing fabrication methods with high controllability and low‐cost is an on‐going challenge. Here, a method is presented for creating microstructures through the dehydration of double network hydrogels. This method utilizes common acrylate monomers and a mask‐assisted photopolymerization process, requiring no complex equipment or laborious chemical synthesis process. The shape and profile of microstructures can be easily controlled by varying the exposure time and the mask used during photopolymerization. By altering the monomer and the mask used for fabricating the second network hydrogel, both convex and concave microstructures can be produced. To showcase the utility of this method, the patterned hydrogel is utilized as a mold to fabricate a polydimethylsiloxane microlens array via soft lithography for imaging application. In addition, a patterned hydrogel surface exhibiting obvious anisotropic wetting properties and open microfluidic devices which can achieve fast directional superspreading within milliseconds are also fabricated to demonstrate the versatility of the method for different engineering fields.
Thermally Induced Irreversible Disorder in Interlayer Stacking of γ‐GeSe
Authors: Kim Joonho , Lee Giyeok , Lee Sol , Park Jinsub , Lee Kihyun , Jung Joong‐Eon , Lim Seungjae , Jang Jeongsu , Bae Heesun , Lee Jae‐Ung , Im Seongil , Soon Aloysius , Kim Kwanpyo 
Published: October 2024

AbstractThe interlayer stacking shift in van der Waals (vdW) crystals represents an important degree of freedom to control various material properties, including magnetism, ferroelectricity, and electrical properties. On the other hand, the structural phase transitions driven by interlayer sliding in vdW crystals often exhibit thickness‐dependent, sample‐specific behaviors with significant hysteresis, complicating a clear understanding of their intrinsic nature. Here, the stacking configuration of the recently identified vdW crystal, γ‐GeSe, is investigated, and the disordering manipulation of stacking sequence is demonstrated. It is observed that the well‐ordered AB′ stacking configuration in as‐synthesized samples undergoes irreversible disordering upon Joule heating via electrical biasing or thermal treatment, as confirmed by atomic resolution scanning transmission electron microscopy (STEM). Statistical analysis of STEM data reveal the emergence of stacking disorder, with samples subjected to high electrical bias reaching the maximum levels of disorder. The energies of various stacking configurations and energy barriers for interlayer sliding are examined using first‐principles calculation and a parameterized model to elucidate the key structural parameters related to stacking shift. The susceptibility of interlayer stacking to disorder through electrical or thermal treatments should be carefully considered to fully comprehend the structural and electrical properties of vdW crystals.
Bifunctional Portable Powder for Freshwater Production With Moisture Harvesting and Undrinkable Water Purification
Authors: Liu Yue , Tian Ye , Cao Wenqing , Zhao Shuaiheng , Qiu Yingqi , Feng Lin 
Published: October 2024

AbstractFreshwater scarcity threatens human survival, particularly in extreme environments like deserts, oceans, and space. Compatible atmospheric water harvesting and undrinkable water purification offer an affordable approach to solving freshwater scarcity in these extreme environments. Nonetheless, developing composite sorbent to attain efficient atmospheric water harvesting and undrinkable water purification remains challenging. Hence, a portable hybrid hygroscopic powder (HLC powder) consisting of hydroxypropyl chitosan, dibenzaldehyde‐functional poly(ethylene glycol), lithium chloride (LiCl), and nano carbon black is proposed. The HLC powder with optimized LiCl load can capture moisture from the air, showing a high water uptake of 1.76 g g−1 at 34% relative humidity (RH) and appropriate over a wide humidity from 34% to 75% RH. pH‐responsive sol‐gel transition induced by Schiff base bonds transforms the HLC solution into hydrogel, inhibiting hydrated salt leakage. Meanwhile, to achieve efficient undrinkable water purification, the LiCl‐free hybrid powder is utilized to convert the undrinkable water, including seawater, dye water, and human urine, to photothermal hydrogel evaporators with low evaporation enthalpies and high evaporation rates ranging from 1.81 to 2.05 kg m−2 h−1 under one sun. This strategy establishes a new path to conveniently obtaining freshwater, breaking hydrological restrictions.
High Temperature‐Insensitive Electrostrain Obtained in (K, Na)NbO3‐Based Lead‐Free Piezoceramics
Authors: Liu Huan , Yang Ziqi , Su Bin , Hao Yijin , Feng Tian‐Yi , Zhang Bo‐Ping , Li Jing‐Feng 
Published: October 2024

AbstractOver the last decades, notable progress is achieved in (K, Na)NbO3 (KNN)‐based lead‐free piezoceramics. However, more studies are conducted to increase its piezoelectric charge coefficient (d33). For actuator applications, piezoceramics need high electric‐field induced strain under low electric fields while maintaining exceptional temperature stability across a wide temperature range. In this study, this work developes Li/Sb‐codoped KNN (LKNNS) ceramics with high electrostrain by defect engineering and domain engineering. A remarkable strain of 0.43%, along with a giant d33* value of 2177 pm V−1, is attained in the LKNNS ceramic at 20 kV cm−1. The ceramic exhibits a minimal performance decrease of less than 15% over a temperature range from room temperature to 150 °C. The exceptional strain is attributed to the presence of A‐site vacancy‐oxygen vacancy () defect dipoles and the increase in nano‐domains. The hierarchical domain configuration and defect dipoles impede the switched domains from reverting to their original state as temperature increases, furthermore, the elongated dipole moments of caused by rising temperatures compensate for strain reduction results in exceptional temperature stability. This study provides a model for designing piezoelectric materials with exceptional overall performance under low electric fields and across a wide temperature range.
Color Tunable Three Terminal (3‐T) Vertically Stacked Tandem Organic Electroluminescent Devices
Authors: Gaur Nrita , Misra Manas , Singh Mohit Kumar , Kabra Dinesh 
Published: October 2024

AbstractTraditional full‐color displays typically use a pixel layout with three side‐by‐side subpixels emitting red (R), green (G), and blue (B) colors. However, this configuration limits the resolution especially in augmented reality (AR) and virtual reality (VR) applications. To address the issue of low pixel density in display technology, this study demonstrated vertically stacked three‐terminal (3‐T) bottom‐emitting tandem OLEDs (sOLED). These OLEDs offer color tunability, facilitated by individually controlled colour units. This study demonstrates two combinations: G+B and R+G. Incorporating three generations of OLED's materials phosphorescent (R), thermally activated delayed fluorescence (TADF) (G), and hyperfluorescent (B). The OLEDs achieve maximum current efficiencies of approximately 11 cd/A, 52.4 cd/A, and 40.7 cd/A for R, G, and B, respectively, in their respective tandem configurations. A wide range of colors can be achieved by blending G+B and R+G color spectrum by adjusting the voltage of independent color unit. The optimal mix results in a fine cyan color with CIE coordinates (0.273,0.5) in G+B sOLED and a warm white with CIE coordinates (0.416,0.518)in R+G sOLED. This work demonstrate a better performing 3‐T sOLED utilizing three different generations OLED materials, offering an individual control within a single pixel providing enhanced pixel density for display technology.
Ti3C2Tx MXene‐Polyaniline Nanocomposite as an Adsorbent in Microextraction by Packed Sorbent for the Analysis of Parabens in Water and Juice Samples
Authors: Mousavi Kobra Zavar , Yamini Yadollah , Ghaemmaghami Mostafa 
Published: October 2024

ABSTRACTHerein, a novel Ti3C2Tx MXene and polyaniline nanocomposite is successfully synthesized and used for the highly efficient extraction of parabens. Polyaniline (PANI) nanofibers have formed a porous and peculiar π–π conjugated structure on hydrophilic MXene sheets, providing numerous adsorption sites for microextraction of analytes with moderate polarities such as parabens. The method is simple and sensitive, using microextraction by packed sorbent coupled with a high‐performance liquid chromatography‐ultraviolet detector. Under the optimal conditions, the method provides suitable preconcentrating factors of 28–35, ultrahigh sensitivity with low limits of detection of 0.3–0.5 µg/L, wide linearity of 0.3.0–200 µg/L with coefficients of determination ≥ 0.9983, and satisfactory precision with relative standard deviations ≤ 10.7%. The outstanding performance has been confirmed in well water and orange juice samples, with recoveries in the range of 93.1%–101.2% for water and 90.6%–103.4% for orange juice samples, respectively.
Moderate Deviation Principle for the Determinant of Sample Correlation Matrix
Authors: Bai Yansong , Zhang Yong , Li Jingyu 
Published: October 2024

ABSTRACTLet be a sequence of independence random vectors from with population correlation matrix , and its sample correlation matrix is denoted as , where the matrix element represents the Pearson correlation coefficient between the and columns of the data matrix . is an interesting part in multivariate analysis, and the likelihood ratio test (LRT) statistic used to test the complete independence of all components of can be expressed as a function of . On this basis, under the condition that the sample size and the dimension satisfy as , we derive the moderate deviation principle (MDP) of the LRT statistic for the hypothesis testing problem vs .