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Highly Sensitive and Stable Determination of As(III) under Near-Neutral Conditions: Benefit from the Synergetic Catalysis of Pt Single Atoms and Active S Atoms over Pt-1/MoS2

文献类型：期刊论文

作者Li, Pei-Hua2,3; Yang, Meng2,3; Song, Zong-Yin1,2,3; Chen, Shi-Hua1,2,3; Xiao, Xiang-Yu1,2,3; Lin, Chu-Hong2,3; Huang, Xing-Jiu1,2,3
刊名ANALYTICAL CHEMISTRY
出版日期2021-11-16
卷号93
ISSN号0003-2700
DOI10.1021/acs.analchem.1c03416
通讯作者Yang, Meng(myang@iim.ac.cn) ; Lin, Chu-Hong(chlin@iim.ac.cn) ; Huang, Xing-Jiu(xingjiuhuang@iim.ac.cn)
英文摘要Designing new catalysts with high activity and stability is crucial for the effective analysis of environmental pollutants under mild conditions. Here, we developed a superior catalyst of Pt single atoms anchored on MoS2 (Pt-1/MoS2) to catalyze the determination of As(III). A detection sensitivity of 3.31 mu A ppb(-1) was obtained in acetate buffer solution at pH 6.0, which is the highest compared with those obtained by other Pt-based nanomaterials currently reported. Pt-1/MoS2 exhibited excellent electrochemical stability during the detection process of As(III), even in the coexistence of Cu(II), Pb(II), and Hg(II). X-ray absorption fine structure spectroscopy and theoretical calculations revealed that Pt single atoms were stably fixed by four S atoms and activated the adjacent S atoms. Then, Pt and S atoms synergistically interacted with O and As atoms, respectively, and transferred some electrons to H3AsO3, which change the rate-determining step of H3AsO3 reduction and reduce reaction energy barriers, thereby promoting rapid and efficient accumulation for As(0). Compared with Pt nanoparticles, the weaker interaction between arsenic species and Pt-1/MoS2 enabled the effortless regeneration and cyclic utilization of active centers, which is more favorable for the oxidation of As(0). This work provides inspiration for developing highly efficient sensing platforms from the perspective of atomic-level catalysis and affords references to explore the detection mechanism of such contaminants.
WOS关键词TRANSFORMATION ; FERRIHYDRITE
资助项目National Natural Science Foundation of China[21735005] ; National Natural Science Foundation of China[21802145] ; China Postdoctoral Innovation Talents Supporting Project[BX2021317] ; China Postdoctoral Innovation Talents Supporting Project[BX20180311] ; Natural Science Foundation of Anhui Province[2008085QB79] ; Special Foundation of President of HFIPS, Shanghai Large Scientific Facilities Center[YZJJ202102]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000721110000027
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; China Postdoctoral Innovation Talents Supporting Project ; Natural Science Foundation of Anhui Province ; Special Foundation of President of HFIPS, Shanghai Large Scientific Facilities Center
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/126518]  
专题中国科学院合肥物质科学研究院
通讯作者Yang, Meng; Lin, Chu-Hong; Huang, Xing-Jiu
作者单位1.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Environm Opt & Technol, HFIPS, Hefei 230031, Peoples R China
3.Chinese Acad Sci, Inst Solid State Phys, Environm Mat & Pollut Control Lab, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Li, Pei-Hua,Yang, Meng,Song, Zong-Yin,et al. Highly Sensitive and Stable Determination of As(III) under Near-Neutral Conditions: Benefit from the Synergetic Catalysis of Pt Single Atoms and Active S Atoms over Pt-1/MoS2[J]. ANALYTICAL CHEMISTRY,2021,93.
APA Li, Pei-Hua.,Yang, Meng.,Song, Zong-Yin.,Chen, Shi-Hua.,Xiao, Xiang-Yu.,...&Huang, Xing-Jiu.(2021).Highly Sensitive and Stable Determination of As(III) under Near-Neutral Conditions: Benefit from the Synergetic Catalysis of Pt Single Atoms and Active S Atoms over Pt-1/MoS2.ANALYTICAL CHEMISTRY,93.
MLA Li, Pei-Hua,et al."Highly Sensitive and Stable Determination of As(III) under Near-Neutral Conditions: Benefit from the Synergetic Catalysis of Pt Single Atoms and Active S Atoms over Pt-1/MoS2".ANALYTICAL CHEMISTRY 93(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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