文献类型：期刊文献

英文题名：Preparation of sugarcane bagasse-derived Co/Ni/N/MPC nanocomposites and its application in H2O2 detection

作者：Bu, Quan[1] Yu, Fan[1] Cai, Jin[1] Bai, Jianmei[1] Xu, Junming[4,5,6] Wang, Hongliang[2] Lin, Hongjian[2,3] Long, Hairong[1]

第一作者：Bu, Quan

通信作者：Long, HR[1]

机构：[1]Jiangsu Univ, Key Lab Modern Agr Equipment & Technol, Minist Educ, Zhenjiang 212013, Jiangsu, Peoples R China;[2]China Agr Univ, Coll Agron & Biotechnol, Ctr Biomass Engn, Beijing 100193, Peoples R China;[3]Zhejiang Univ, Coll Biosyst Engn & Food Sci, Hangzhou 310058, Peoples R China;[4]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[5]Key Lab Biomass Energy & Mat, Nanjing 210042, Peoples R China;[6]Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China

年份：2024

卷号：211

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20240815608005);Scopus(收录号：2-s2.0-85185403235);WOS:【SCI-EXPANDED(收录号:WOS:001198655300001)】；

基金：This study was partially supported by the National Natural Science Foundation of China (No. 32171713) , Jiangsu Agricultural Science and Technology Innovation Fund (No. CX (22)3129) , Jiangsu Province and Education Ministry Co -sponsored Synergistic Innovation Center of Modern Agricultural Equipment (No. XTCX2012) , and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) .

语种：英文

外文关键词：Biochar; Microwave heating; Nanocomposites; Electrochemical sensing; Hydrogen peroxide

摘要：In this study, Co, Ni and N were introduced into the carbon -based materials to construct the Co/Ni/N/MPC (microwave pyrolysis biochar) sensor with multiple electrochemical active signal sites. Under the performance of microwave -assisted synthesis, carbon -based skeleton was employed to uniformly disperse Co and Ni atoms, forming metal -metal bonds with stronger activity than single metal. Nitrogen doping could also stabilize the carbon -based skeleton and promote electron transfer efficiency. To investigate the influence of different metal ratios on catalytic performance, the sensitivity of the three sensor configurations (Co1/Ni2/N/MPC/GCE, Co1/ Ni1/N/MPC/GCE and Co2/Ni1/N/MPC/GCE) for the detection of hydrogen peroxide (H2O2) was examined. The collected results showed that Co1/Ni1/N/MPC/GCE had the highest sensitivity, and the linear equation was fitted by the change of current signal I and H2O2 concentration. The linear range was 0.05-272.15 mM, and the detection limit was 0.56 mu M (S/N = 3), which was applied in the actual sample detection. We achieved recovery rates of 98.3-98.9% and relative standard deviations (RSD) of 2.6-4.2% for the detection of H2O2 in tap water samples. In this study, bimetallic elements as well as nitrogen doping were employed to enhance both the activity and stability of the material, consequently expanding the sensitivity of the material, in the meanwhile achieved highly sensitive detection of H2O2 in water.