文献类型：期刊文献

英文题名：A smartphone-integrated ready-to-use paper-based sensor with mesoporous carbon-dispersed Pd nanoparticles as a highly active peroxidase mimic for H2O2 detection

作者：Zhang, Wenchi[1];Niu, Xiangheng[1,2];Li, Xin[1];He, Yanfang[1];Song, Hongwei[3];Peng, Yinxian[3];Pan, Jianming[1,2];Qiu, Fengxian[1];Zhao, Hongli[4];Lan, Minbo[4]

机构：[1]Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China;[2]Jiangsu Univ, Inst Green Chem & Chem Technol, Zhenjiang 212013, Peoples R China;[3]Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2018

卷号：265

起止页码：412

外文期刊名：SENSORS AND ACTUATORS B-CHEMICAL

收录：;EI(收录号：20181204930719);WOS:【SCI-EXPANDED(收录号:WOS:000430232500050)】；

基金：This research was supported by the National Natural Science Foundation of China (Nos. 21605061 and 31601549), the Natural Science Foundation of Jiangsu Province (No. BK20160489), the Natural Science Fund for Colleges and Universities in Jiangsu Province (No. 16KJB150009), the Postdoctoral Fund of China (No. 2016M600365), the Postdoctoral Fund of Jiangsu Province (No. 1601015B), the Open Fund from the Shanghai Key Laboratory of Functional Materials Chemistry (No. SKLFMC201601), the Open Funding Project of the State Key Laboratory of Bioreactor Engineering, and the Cultivation Project for Youth Teachers in Jiangsu University.

语种：英文

外文关键词：Paper-based sensor; Pd NPs/meso C; Peroxidase mimic; H2O2; Smartphone-assisted detection

摘要：In analytical science, it is always of great scientific and practical significances to explore convenient, rapid, and reliable methods/devices to trace the H2O2 level in various matrices. Herein, we fabricated a ready-to-use paper-based chemosensor by using mesoporous carbon-dispersed Pd nanoparticles (Pd NPs/meso-C) as a promising peroxidase mimic for the visual determination of H2O2. Thanks to the large exposed surface of the meso-C support and the highly dispersed active Pd NPs, the synthesized Pd NPs/meso-C exhibited favorable catalytic performance to trigger the chromogenic reaction of colorless TMB to blue TMBox mediated by H2O2, providing a K-cat of 326.67 s(-1) for H2O2 and 0.55 s(-1) for TMB, larger than the bare Pd NPs and even comparable to the activity of natural horse radish peroxidase. As demonstrated, this principle could be employed to colorimetrically detect H2O2 in the linear scope of 5-300 mu M. By simply immobilizing the Pd NPs/meso-C mimic and the TMB substrate onto a common filter paper, ready-to-use paper-based sensors were further prepared. By combining these test strips with a smartphone and an easy-to-access color-scanning APP together, the integrated platform could be used for the quantitative analysis of H2O2 with advantages of simple operation, fast response, low cost, and good selectivity and repeatability. Furthermore, reliable sensing of the target in milk matrices suggested great promise of the integrated platform in practical applications. (C) 2018 Elsevier B.V. All rights reserved.