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题名: Design of two electrode system for detection of antioxidant capacity with photoelectrochemical platform
作者: Han, Dongxue1;  Ma, Weiguang1, 2;  Wang, Lingnan1;  Ni, Shuang3;  Zhang, Nan1;  Wang, Wei1;  Dong, Xiandui1;  Niu, Li1
关键词: Antioxidant capacity ;  Photoelectrochemistry ;  Two electrode technique
刊名: BIOSENSORS & BIOELECTRONICS
发表日期: 2016-01-15
DOI: 10.1016/j.bios.2015.08.066
卷: 75, 页:458-464
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Physical Sciences
类目[WOS]: Biophysics ;  Biotechnology & Applied Microbiology ;  Chemistry, Analytical ;  Electrochemistry ;  Nanoscience & Nanotechnology
研究领域[WOS]: Biophysics ;  Biotechnology & Applied Microbiology ;  Chemistry ;  Electrochemistry ;  Science & Technology - Other Topics
英文摘要: Recently, a flow photoelectrochemical cell has been first developed and applied to assay global antioxidant capacity in our group. Yet, shortcomings of liquid reference electrode such as sample contaminations from the leaking of the reference solution, mechanically fragile, temperature and light sensitivity, etc. are significant restrictions for integration and miniaturization of photoelectrochemical sensing instruments, which have greatly limited their practical applications. Bearing these problems, in this work a novel two electrode flow photoelectron-chemical system (two-EPCS) has been developed for detection of antioxidant capacity. It is noteworthy that the electrochemical modulation-free mode (detection at the potential of 0.0 V) is performed, which has greatly simplified the analysis process and will result in significant simplifications of the instrument integrations. During the sample analysis, both standard antioxidants and commercial beverages were detected. Results evaluated from the two-EPCS are well agreed with those of the traditional three-EPCS at low potentials. By unloading of the reference electrode, it is of great convenience to design a novel photoelectrochemical microfluidic chip based on the two-EPCS, which has also been successfully applied for antioxidant capacity assay. It is satisfactory that comparable detection concentration range and sensitivity were accomplished by applying the microfluidic chip technique. Moreover, the two-EPCS is verified to be a universal platform which does not depend on selected optoelectronic materials but pervasive for general photocatalysts. Such a two-EPCS should be considered as a feasible alternative to the three-EPCS, which will become a promising candidate for industrial and commercial photoelectrochemical sensing instrument integrations in the future. (C) 2015 Elsevier B.V. All rights reserved.
关键词[WOS]: AG/AGCL REFERENCE ELECTRODE ;  LIQUID-JUNCTION ;  QUANTUM DOTS ;  NANOPARTICLES ;  IMMUNOASSAY ;  CARBON ;  SENSOR
语种: 英语
WOS记录号: WOS:000362862000060
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146599
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Engn Lab Modern Analyt Tech, Changchun 130022, Jilin, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Shenyang Agr Univ, Shenyang 110161, Peoples R China

Recommended Citation:
Han, Dongxue,Ma, Weiguang,Wang, Lingnan,et al. Design of two electrode system for detection of antioxidant capacity with photoelectrochemical platform[J]. BIOSENSORS & BIOELECTRONICS,2016,75:458-464.
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