Palladium Single Atoms on TiO2 as a Photocatalytic Sensing Platform for Analyzing Organophosphorus Pesticide Chlorpyrifos

被引：119

作者：

Ge, Xiaoxiao ^{[1
]}

Zhou, Peng ^{[1
]}

Zhang, Qinghua ^{[2
,3
,4
]}

Xia, Zhonghong ^{[1
]}

Chen, Shulin ^{[5
,6
,7
]}

Gao, Peng ^{[5
,6
,8
]}

Zhang, Zhe ^{[9
,10
]}

Gu, Lin ^{[2
,3
,4
]}

Guo, Shaojun ^{[1
,11
,12
]}

机构：

[1] Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China

[2] Chinese Acad Sci, Beijing Natl Lab Condensed Matter, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[4] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[5] Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China

[6] Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China

[7] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China

[8] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

[9] Guangzhou Univ, Minist Educ, Inst Environm Res Greater Bay Area, Guangzhou 510006, Guangdong, Peoples R China

[10] Guangzhou Univ, Minist Educ, Key Lab Water Qual & Conservat Pearl River Delta, Guangzhou 510006, Guangdong, Peoples R China

[11] Peking Univ, Coll Engn, BIC ESAT, Beijing 100871, Peoples R China

[12] Peking Univ, Coll Engn, Dept Energy & Resources Engn, Beijing 100871, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2020年 / 59卷 / 01期

基金：

北京市自然科学基金; 国家重点研发计划; 中国博士后科学基金; 中国国家自然科学基金;

关键词：

chlorpyrifos detection; hydrogen evolution reaction; photocatalysis; single-atom catalyst; titanium; RAPID DETECTION; MICROEXTRACTION; EXTRACTION; RESIDUES; CATALYST;

D O I：

10.1002/anie.201911516

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Traditional methods for analyzing organophosphorus pesticide chlorpyrifos, usually require the tedious sample pretreatment and sophisticated bio-interfaces, leading to the difficulty for real-time analysis. Herein, we use palladium single-atom (PdSA)/TiO2 as a photocatalytic sensing platform to directly detect chlorpyrifos with high sensitivity and selectivity. PdSA/TiO2, prepared by an in situ photocatalytic reduction of PdCl42- on the TiO2, shows much higher photocatalytic activity (10 mol g(-1) h(-1)) for hydrogen evolution reaction than Pd nanoparticles (1.95 mol g(-1) h(-1)), and excellent stability. In the presence of chlorpyrifos, the photocatalytic activity of PdSA/TiO2 decreases. Through this inhibition effect the platform can realize a detection limit for chlorpyrifos of 0.01 ng mL(-1), much lower than the maximum residue limit (10 ppb) permitted by the U.S. Environmental Protection Agency.

引用

页码：232 / 236

页数：5

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