A hydrogen peroxide sensor based on TNM functionalized reduced graphene oxide grafted with highly monodisperse Pd nanoparticles
Authors: Berna Tosun
Betül Sen
Sait Bozkurt
Mehmet Faruk Ebeoğlugil
Süleyman Akocak
Aysun Savk
Fatih Sen
Journal: Analytica Chimica Acta (2017)
Discipline: CHEMISTRY
Keywords: EIS; H(2)O(2) sensor; Highly monodisperse; Pd nanomaterial; TNM functionalization.
Affiliations: Sen Research Group, Department of Biochemistry, Faculty of Arts and Science, Dumlupınar University, Evliya Çelebi Campus, 43100 Kütahya, Turkey., Sen Research Group, Department of Biochemistry, Faculty of Arts and Science, Dumlupınar University, Evliya Çelebi Campus, 43100 Kütahya, Turkey; Department of Material Science and Engineering, Faculty of Engineering, Dumlupınar University, Evliya Çelebi Campus, 43100 Kütahya, Turkey., Sen Research Group, Department of Biochemistry, Faculty of Arts and Science, Dumlupınar University, Evliya Çelebi Campus, 43100 Kütahya, Turkey; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Adıyaman University, Adıyaman, Turkey., Department of Material Science and Engineering, Faculty of Engineering, Dumlupınar University, Evliya Çelebi Campus, 43100 Kütahya, Turkey., Sen Research Group, Department of Biochemistry, Faculty of Arts and Science, Dumlupınar University, Evliya Çelebi Campus, 43100 Kütahya, Turkey. Electronic address: .

Abstract:  Addressed herein, we report the synthesis and characterization of a tert-nonyl mercaptan (TNM) functionalized reduced graphene oxide (rGO) supported palladium (Pd) nanoparticles (NPs) (Pd/TNM@rGO) as electrochemical sensor. The highly monodisperse Pd/TNM@rGO nanocomposite was applied for electrochemical determination of hydrogen peroxide (H2O2) at a potential range of -0.6 to +0.8 V. The Pd/TNM@rGO sensor demonstrated very high activity, sensitivity, reusability and durability toward H2O2 sensing. The well dispersed Pd/TNM@rGO nanocomposite has been characterized by using several analytical techniques such as, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), electron energy loss spectroscopy (EELS) and electrochemical impedance spectroscopy (EIS). The catalytic performance of prepared biosensor was also characterized by using cyclic voltammetry (CV) and chronoamperometry (CA) methods. The proposed H2O2 biosensor showed a broad linear range up to 12 mM, and a very low detection limit of 0.0025 μM, with a quick response time of less than 10 s. Additionally, the biosensor exhibited great capability, reproducibility and durability for the examination of H2O2. 

Retracted: No

PubPeer comments:
 This paper is one of at least 30 papers by the same research group that all share the same photo. In all papers, this photo is used as a zoomed-in inset representing the high-resolution transmission electron microscopy (HRTEM) analysis of the  atomic lattice fringe and particle size of the nanoparticles. Of concern, the same photo is used to represent a different type of nanoparticle in each of these papers. Here is a collage of 6 different uses of the same photo,  Inset 1 : ![file] Here is a list of the 30 papers identified so far that all use this photo, and the different types of nanoparticles that they represent. * Aysenur Aygun et al. - DOI: 10.1016 j.jpba.2019.112961 - Nigella sativa Pt * Aysun Su0327avk et al. - DOI: 10.1016 j.molliq.2019.112355 - PtNi@AC * Aysun Su0327avk et al. - DOI: 10.1016 j.msec.2019.01.113 - ZnNi@f-MWCNT * Aysun Su0327avk et al. - DOI: 10.1038 s41598-019-55746-y - PdNi@rGO * Betuu0308l Su0327en et al. - DOI: 10.1016 j.ijhydene.2018.03.175 - Pd@GO * Betuu0308l Su0327en et al. - DOI: 10.1016 j.nanoso.2017.08.013 - PdRu@GO * Betuu0308l Su0327en et al. - DOI: 10.1016 j.apcatb.2017.11.067 - RhPt TC@GO * Betuu0308l Su0327en et al. - DOI: 10.1016 j.ijhydene.2018.07.081 - Pd-Ir@AC * Betuu0308l Su0327en et al. - DOI: 10.1016 j.jcis.2018.05.021 - Ru-Ni@PVP * Betuu0308l Su0327en et al. - DOI: 10.1016 j.nanoso.2018.07.008 - Pd@AC * Betuu0308l Su0327en et al. - DOI: 10.1016 j.ijhydene.2018.07.122 - PdRuNi@GO * Betuu0308l Su0327en et al. - DOI: 10.1016 j.ijhydene.2019.01.215 - PdCo@GO * Betuu0308l Su0327en et al. - DOI: 10.1016 j.jtice.2019.04.040 - PdNi@VC * Betuu0308l Su0327en et al. - DOI: 10.1016 j.ijhydene.2018.12.051 - PdCo@MOF * Betuu0308l Su0327en et al. - DOI: 10.1016 j.ijhydene.2019.02.176 - RuCu@rGO * Birguu0308tay Su0327ahin et al. - DOI: 10.1016 j.colsurfb.2017.12.042 - Pt * Buse Demirkan et al. - DOI: 10.1038 s41598-020-59935-y - rGO Pd@PPy * Buse Demirkan et al. - DOI: 10.1038 s41598-019-48802-0 - Pt-Co@rGO * Fatma Diler et al. - DOI: 10.1016 j.molliq.2019.111967 - Pd@GO * Hayriye Genc Bilgicli et al. - DOI: 10.1016 j.micromeso.2020.110014 - CPG * Hilal Acidereli et al. - DOI: 10.1016 j.renene.2020.07.105 - PdRu@G * Mehmet Salih Nas et al. - DOI: 10.1016 j.molliq.2019.112100 - Pt-Co@GO * Nabih Lolak et al. - DOI: 10.1021 acsomega.9b00485 - PdNi@GO * Oznur Alptekin et al. - DOI: 10.1039 D0CY00641F - PtRh@GO * Rukiye Ayranci et al. - DOI: 10.1016 j.msec.2019.02.040 - Pt Ni@rGO * Sait Bozkurt et al. - DOI: 10.1016 j.aca.2017.07.051 - Pd TNM@rGO * Sinan Eris et al. - DOI: 10.1016 j.jcis.2017.11.085 - Pt@f-CB * Sinan Eris et al. - DOI: 10.1016 j.ijhydene.2017.11.063 - Pt@f-VC * Suat Tacu0327yu0131ldu0131z et al. - DOI: 10.1016 j.molliq.2019.04.019 - Ru-Rh@PVP * Zeynep Dasu0327delen et al. - DOI: 10.1016 j.apcatb.2017.08.014 - Pt@GO-PVP Here is Figure 1 of this paper: ![file] , 
 Fig.1 B shows two identical Raman spectra: blue and red ![file] , 
 XPS spectra ofPd TNM@rGO NPs for Pd 3d part are te same as Pd@GO NPs in another paper: https: pubpeer.com publications 77A598972CEB2B4EE550B813108BB9 http: dx.doi.org 10.1016 j.nanoso.2017.06.002 ![file] ,