Citation: ZHENG Shan, LIU Yang, CHEN Piao-Piao, XING Yi-Chen, ZHANG Wei-Bo, SHI Ya-Ying, HUANG Chao-Biao. Photoelectrochemical Biosensor for Detection of Mercury(Ⅱ) Based on CdS Quantum Dots/TiO₂ Composite Material[J]. Chinese Journal of Analytical Chemistry, ;2019, 47(9): 1314-1320. doi: 10.19756/j.issn.0253-3820.181818 shu

Photoelectrochemical Biosensor for Detection of Mercury(Ⅱ) Based on CdS Quantum Dots/TiO₂ Composite Material

1.
College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China;
2.
Xingzhi College, Zhejiang Normal University, Lanxi 321100, China

Received Date: 29 December 2018
Revised Date: 7 May 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (No.21575129).

A sensitive mercury ion (Hg²⁺) sensor was designed by using CdS QDs/TiO₂ composite material as the photoelectric conversion unit. After the coupling of two inorganic semiconductors (CdS QDs and TiO₂) with different band gaps, the performance of electrode has been improved. After excited by the specific wavelength of light, the electron in CdS QDs would be motivated from the valence band to the conduction band. Then the Excited state electron would move to TiO₂ due to that the valence band of TiO₂ was lower than CdS QDs. The spatial separation of the e^--h⁺ pairs in the different semiconductors could retards their recombination, and thereby the photoelectric conversion efficiency would be improved. We constructed a sensitive sensor for Hg²⁺ by two complementary short-stranded DNAs. One of the DNA single strands (ONS1) was rich in T bases, and Hg²⁺ could specifically bind to the T base to form a T-Hg²⁺-T structure, thus ONS1 could not be paired with complementary single stranded DNA (ONS2) labeled by gold nanoparticles (AuNPs), inhibiting the decrease of photocurrent and achieving sensitive detection of Hg²⁺. The Hg²⁺ sensor displayed a linear range from 1.0×10^-10 mol/L to 1.5×10^-7 mol/L and a detection limit of 6.0×10^-11mol/L (S/N=3).
- Photoelectrochemical,
- Mercury ion (Ⅱ),
- Biosensor,
- CdS quantum dots,
- Titanium dioxide,
- Gold nanoparticles
1. [1]
2. [2]
3. [3]
4. [4]
5. [5]
6. [6]
7. [7]
8. [8]
9. [9]
10. [10]
11. [11]
12. [12]
13. [13]
14. [14]
15. [15]
16. [16]
17. [17]
18. [18]
19. [19]
20. [20]
21. [21]
22. [22]
23. [23]
24. [24]
25. [25]
26. [26]
27. [27]
28. [28]
29. [29]
30. [30]
31. [31]
32. [32]
33. [33]
34. [34]
35. [35]
36. [36]
37. [37]
38. [38]
39. [39]
1. [1]
  Meiqing Yang , Lu Wang , Haozi Lu , Yaocheng Yang , Song Liu . Recent Advances of Functional Nanomaterials for Screen-Printed Photoelectrochemical Biosensors. Acta Physico-Chimica Sinica, 2025, 41(2): 100018-. doi: 10.3866/PKU.WHXB202310046
2. [2]
  Shengjuan Huo , Xiaoyan Zhang , Xiangheng Li , Xiangning Li , Tianfang Chen , Yuting Shen . Unveiling the Marvels of Titanium: Popularizing Multifunctional Colored Titanium Product Films. University Chemistry, 2024, 39(5): 184-192. doi: 10.3866/PKU.DXHX202310127
3. [3]
  Ruiqing LIU , Wenxiu LIU , Kun XIE , Yiran LIU , Hui CHENG , Xiaoyu WANG , Chenxu TIAN , Xiujing LIN , Xiaomiao FENG . Three-dimensional porous titanium nitride as a highly efficient sulfur host. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 867-876. doi: 10.11862/CJIC.20230441
4. [4]
  Bing LIU , Huang ZHANG , Hongliang HAN , Changwen HU , Yinglei ZHANG . Visible light degradation of methylene blue from water by triangle Au@TiO₂ mesoporous catalyst. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 941-952. doi: 10.11862/CJIC.20230398
5. [5]
  Lina Liu , Xiaolan Wei , Jianqiang Hu . Exploration of Subject-Oriented Undergraduate Comprehensive Chemistry Experimental Teaching Based on the “STS Concept”: Taking the Experiment of Gold Nanoparticles as an Example. University Chemistry, 2024, 39(10): 337-343. doi: 10.12461/PKU.DXHX202405112
6. [6]
  Caixia Lin , Zhaojiang Shi , Yi Yu , Jianfeng Yan , Keyin Ye , Yaofeng Yuan . Ideological and Political Design for the Electrochemical Synthesis of Benzoxathiazine Dioxide Experiment. University Chemistry, 2024, 39(2): 61-66. doi: 10.3866/PKU.DXHX202309005
7. [7]
  Xiaoning TANG , Shu XIA , Jie LEI , Xingfu YANG , Qiuyang LUO , Junnan LIU , An XUE . Fluorine-doped MnO₂ with oxygen vacancy for stabilizing Zn-ion batteries. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1671-1678. doi: 10.11862/CJIC.20240149
8. [8]
  Jiarong Feng , Yejie Duan , Chu Chu , Dezhen Xie , Qiu'e Cao , Peng Liu . Preparation and Application of a Streptomycin Molecularly Imprinted Electrochemical Sensor: A Suggested Comprehensive Analytical Chemical Experiment. University Chemistry, 2024, 39(8): 295-305. doi: 10.3866/PKU.DXHX202401016
9. [9]
  Ping Ye , Lingshuang Qin , Mengyao He , Fangfang Wu , Zengye Chen , Mingxing Liang , Libo Deng . 荷叶衍生多孔碳的零电荷电位调节实现废水中电化学捕集镉离子. Acta Physico-Chimica Sinica, 2025, 41(3): 2311032-. doi: 10.3866/PKU.WHXB202311032
10. [10]
  Qingtang ZHANG , Xiaoyu WU , Zheng WANG , Xiaomei WANG . Performance of nano Li₂FeSiO₄/C cathode material co-doped by potassium and chlorine ions. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1689-1696. doi: 10.11862/CJIC.20240115
11. [11]
  Xingchao Zhao , Xiaoming Li , Ming Liu , Zijin Zhao , Kaixuan Yang , Pengtian Liu , Haolan Zhang , Jintai Li , Xiaoling Ma , Qi Yao , Yanming Sun , Fujun Zhang . 倍增型全聚合物光电探测器及其在光电容积描记传感器上的应用. Acta Physico-Chimica Sinica, 2025, 41(1): 2311021-. doi: 10.3866/PKU.WHXB202311021
12. [12]
  Huihui LIU , Baichuan ZHAO , Chuanhui WANG , Zhi WANG , Congyun ZHANG . Green synthesis of MIL-101/Au composite particles and their sensitivity to Raman detection of thiram. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 2021-2030. doi: 10.11862/CJIC.20240059
13. [13]
  Linbao Zhang , Weisi Guo , Shuwen Wang , Ran Song , Ming Li . Electrochemical Oxidation of Sulfides to Sulfoxides. University Chemistry, 2024, 39(11): 204-209. doi: 10.3866/PKU.DXHX202401009
14. [14]
  Qiaoqiao BAI , Anqi ZHOU , Xiaowei LI , Tang LIU , Song LIU . Construction of pressure-temperature dual-functional flexible sensors and applications in biomedicine. Chinese Journal of Inorganic Chemistry, 2024, 40(12): 2259-2274. doi: 10.11862/CJIC.20240128
15. [15]
  Liangzhen Hu , Li Ni , Ziyi Liu , Xiaohui Zhang , Bo Qin , Yan Xiong . A Green Chemistry Experiment on Electrochemical Synthesis of Benzophenone. University Chemistry, 2024, 39(6): 350-356. doi: 10.3866/PKU.DXHX202312001
16. [16]
  Zhuo Wang , Xue Bai , Kexin Zhang , Hongzhi Wang , Jiabao Dong , Yuan Gao , Bin Zhao . MOF模板法合成氮掺杂碳材料用于增强电化学钠离子储存和去除. Acta Physico-Chimica Sinica, 2025, 41(3): 2405002-. doi: 10.3866/PKU.WHXB202405002
17. [17]
  Zhengli Hu , Jia Wang , Yi-Lun Ying , Shaochuang Liu , Hui Ma , Wenwei Zhang , Jianrong Zhang , Yi-Tao Long . Exploration of Ideological and Political Elements in the Development History of Nanopore Electrochemistry. University Chemistry, 2024, 39(8): 344-350. doi: 10.3866/PKU.DXHX202401072
18. [18]
  Yongming Guo , Jie Li , Chaoyong Liu . Green Improvement and Educational Design in the Synthesis and Characterization of Silver Nanoparticles. University Chemistry, 2024, 39(3): 258-265. doi: 10.3866/PKU.DXHX202309057
19. [19]
  Hong LI , Xiaoying DING , Cihang LIU , Jinghan ZHANG , Yanying RAO . Detection of iron and copper ions based on gold nanorod etching colorimetry. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 953-962. doi: 10.11862/CJIC.20230370
20. [20]
  Tiantian MA , Sumei LI , Chengyu ZHANG , Lu XU , Yiyan BAI , Yunlong FU , Wenjuan JI , Haiying YANG . Methyl-functionalized Cd-based metal-organic framework for highly sensitive electrochemical sensing of dopamine. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 725-735. doi: 10.11862/CJIC.20230351

Get Citation

PDF

XML

Metrics

PDF Downloads(14)
Abstract views(1263)
HTML views(114)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Photoelectrochemical Biosensor for Detection of Mercury(Ⅱ) Based on CdS Quantum Dots/TiO2 Composite Material

Metrics

通讯作者: 陈斌, bchen63@163.com

Photoelectrochemical Biosensor for Detection of Mercury(Ⅱ) Based on CdS Quantum Dots/TiO₂ Composite Material