首页|Hemin-functionalized polypyrrole/paper-derived biochar electrocatalysts:Enhanced sensor platforms for H2O2

Hemin-functionalized polypyrrole/paper-derived biochar electrocatalysts:Enhanced sensor platforms for H2O2

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As a H2O2 electrochemical biomimetic enzyme sensor,the stability,repeatability and sensitivity of hemin-based composites are closely connected with the loading of hemin on high-performance matrix.Herein,polypyrrole/paper-derived carbon(PPy/PC)nanocomposite was used for the construction of a hemin-based non-enzymatic sensor to detect H2O2.Where the poplar wood is used to obtain crude cellulose through a straightforward paper-making process.This crude cellulose is then subjected to pyrolysis to yield the desired paper-based carbon ma-terial.The hemin-decorated PPy/PC was demonstrated possessing remarkable electrocatalytic activity for H2O2 reduction,and the possible mechanism of the reactions was discussed.The electrochemical sensor,utilizing the H-PPy/PC composite,achieved a low detection limit of 30 nM,along with enhanced selectivity and stability under optimized conditions.The favorable results observed can primarily be attributed to the superior electrochemical performance of PPy/PC,as well as its unique 3D interconnected structure.This structure effectively impedes the self-dimerization of hemin,thereby ensuring the generation of active catalytic species.

HeminBiocharPaper-based carbon materialsPaper-making processH2O2 sensing

Yuhang Jiang、Tianshuang Bao、Xiangchuan Zhao、Qi Wang、Yue Cao、Jun Cao、Xingxiang Ji、Weimeng Si

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School of Materials Science and Engineering,Shandong University of Technology,Xincunxi Road 266th,Zibo,255000,China

State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology(Shandong Academy of Sciences),Jinan,250353,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Shandong ProvinceNatural Science Foundation of Shandong ProvinceJoint Zibo-SDUT FundFoundation of State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology(Shandong Academy of

5150216121706148ZR2020ME041ZR2022QB1732019ZBXC358KF2019-06

2024

10.1016/j.pnsc.2024.02.017

自然科学进展·国际材料(英文)
国家自然科学基金委员会

自然科学进展·国际材料(英文)

影响因子：0.25
ISSN：1002-0071
年,卷(期)：2024.34(2)
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