IOCAS-IR  > 海洋环境腐蚀与与生物污损重点实验室
Colorimetric determination of Hg2+ based on the mercury-stimulated oxidase mimetic activity of Ag3PO4 microcubes
Zhang, Yu1; Ju, Peng1,2,3; Sun, Liping4; Wang, Zhe1,5; Zhai, Xiaofan3,6; Jiang, Fenghua1; Sun, Chengjun1,7
2020-07-02
Source PublicationMICROCHIMICA ACTA
ISSN0026-3672
Volume187Issue:7Pages:14
Corresponding AuthorJu, Peng(jupeng@fio.org.cn) ; Sun, Chengjun(csun@fio.org.cn)
AbstractFour kinds of Ag3PO4 materials were prepared by controlling the experimental conditions, which were developed as oxidase mimics. Experimental results showed that different synthesis methods led to distinct crystal structures, morphologies, and surface properties, which contributed to diverse oxidase-like activities of Ag3PO4 materials. Among them, Ag3PO4 microcubes (APMCs) can efficiently catalyze the oxidation of colorless 3,3,5,5-tetramethylbenzidine in the presence of dissolved oxygen to form a blue-colored oxide, presenting the best intrinsic oxidase mimetic ability. The higher-energy [110] facets with more oxygen vacancies exposed and more active sites coupled with more negative charge and larger specific surface area of APMCs contributed to its enhanced oxidase mimetic performance. Besides, mercury ions were proved to remarkably and selectively stimulate the oxidase-like ability of APMCs owing to the formation of Ag-Hg amalgam on its surface. Based on the stimulating effect of Hg2+ towards APMCs, a simple and rapid method for colorimetric determination of Hg2+ was thus established via the significant signal amplification and megascopic color variation. Under the optimal conditions, the sensing system showed a good linear relationship ranging from 0.1 to 7.0 mu M and a detection limit of 20 nM for Hg2+, exhibiting high selectivity and good colour stability. Moreover, the colorimetric method was successfully applied to determine Hg2+ in real water samples. Considering these advantages, the developed colorimetric sensing system is expected to hold bright prospects for trace determination of Hg2+ in biological, environmental, and food samples.p id="Par The preparation process of Ag3PO4 materials and Hg2+-stimulated enhanced oxidase-like ability of Ag3PO4 microcubes in catalyzing the oxidation of TMB to generate a typical blue color, which can be applied in rapid and ultrasensitive detection of Hg2+ visually.
KeywordAg3PO4 Microcubes Oxidase mimics Colorimetric detection Hg2+
DOI10.1007/s00604-020-04399-0
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51702328] ; National Natural Science Foundation of China[41706080] ; Basic Scientific Fund for National Public Research Institutes of China[2019Y03] ; Basic Scientific Fund for National Public Research Institutes of China[2020S02] ; Shandong Provincial Natural Science Foundation[ZR2017BD002] ; Key Research and Development Program of Shandong Province[2018GHY115029] ; CAS Light of West China Program, Open Fund of Shandong Key Laboratory of Corrosion Science[KLCS201906] ; Open Fund of Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao)[LMEES201802] ; Open Foundation of Pilot National Laboratory for Marine Science and Technology (Qingdao)[QNLM2016ORP0410] ; Aoshan Scientific and Technological Innovation Project - Pilot National Laboratory for Marine Science and Technology (Qingdao)[2016ASKJ14]
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000548971900003
PublisherSPRINGER WIEN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/167934
Collection海洋环境腐蚀与与生物污损重点实验室
Corresponding AuthorJu, Peng; Sun, Chengjun
Affiliation1.Minist Nat Resources MNR, Inst Oceanog 1, Key Lab Marine Ecoenvironm Sci & Technol, Marine Bioresource & Environm Res Ctr, 6 Xianxialing Rd, Qingdao 266061, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Ecol & Environm Sci, 1 Wenhai Rd, Qingdao 266237, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Shandong Key Lab Corros Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
4.Wenzhou Med Univ, Sch Lab Med & Life Sci, Wenzhou 325035, Peoples R China
5.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, 238 Songling Rd, Qingdao 266100, Peoples R China
6.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, 1 Wenhai Rd, Qingdao 266237, Peoples R China
7.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Dugs & Bioprod, 1 Wenhai Rd, Qingdao 266237, Peoples R China
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang, Yu,Ju, Peng,Sun, Liping,et al. Colorimetric determination of Hg2+ based on the mercury-stimulated oxidase mimetic activity of Ag3PO4 microcubes[J]. MICROCHIMICA ACTA,2020,187(7):14.
APA Zhang, Yu.,Ju, Peng.,Sun, Liping.,Wang, Zhe.,Zhai, Xiaofan.,...&Sun, Chengjun.(2020).Colorimetric determination of Hg2+ based on the mercury-stimulated oxidase mimetic activity of Ag3PO4 microcubes.MICROCHIMICA ACTA,187(7),14.
MLA Zhang, Yu,et al."Colorimetric determination of Hg2+ based on the mercury-stimulated oxidase mimetic activity of Ag3PO4 microcubes".MICROCHIMICA ACTA 187.7(2020):14.
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