Home

Citation: Zhao Kai-Yuan, Wang Yu-Qing. Surface Complex Adsorption Wave of Cadmium Ion at Ultra-micro Disc-electrode Modified by Polyaniline[J]. Acta Physico-Chimica Sinica, ;2003, 19(08): 727-732. doi: 10.3866/PKU.WHXB20030811 shu

Surface Complex Adsorption Wave of Cadmium Ion at Ultra-micro Disc-electrode Modified by Polyaniline

1.
Department of Chemistry, College of Science and Technology of Suzhou, Suzhou　215009

Received Date: 7 January 2003
Available Online: 15 August 2003

The ultra-micro disc-electrode is combined by adhering with 12-carbon fibers of 7 μm in diameter ,after that this electrode is modified by polyaniline in electrolytic polymerization. The absorption characteristics and the electrode process of cadmium ion on this electrode are studied by cyclic voltammetry, step-scan voltammetry, two-step chronocoulometry and AC impedance method. There are two reduction peaks in cyclic voltammetric curve at －0.90 V and －1.06 V, respectively(Fig.1).Experiments and theory show that the electro-active adsorptive surface complex of Cd2＋ is formed from chemical adsorption of Cd2＋ by polyaniline at the electrode surface. So ,this kind of surface complex rather than Cd2＋is reduced firstly .The potential of the reduction peak is at －0.90 V, which is more positive than the directly reduced potential (－0.98 V) of Cd2＋.There is no corresponding oxide peak appearing in cyclic scanning. The reaction mechanism of electrode process is inferred according to experimental data, which proves that the characteristics of reduction peak are simultaneously controlled by diffusing and surface complex reactions. The theoretic curve calculated by this mechanism is agreement with the experimental curve determined by step-scan voltammetry (Fig.2).The formation constant (K=924) of surface adsorptive complex, the maximum adsorptive capacity(Γo=2.08×10－9 mol•cm－2), the kinetic parameters（kf =4.04×10－3 mol－1•cm3•s－1, kb =4.37×10－6 s－1） of surface complex reaction, the diffusion coefficient（D=8.7×10－6 cm2•s－1）of Cd2＋ ,the thickness of diffusion layer （δd=2.75×10－4 cm）and reaction layer（δk=5.14×10－5 cm） are calculated. Experiment also proves that the reduction peak at －1.06 V is a catalytic reduction peak of hydrogen ion, formed by inductive effect of reduced surface complex of Cd2＋.
- Ultra-micro disc-electrode;Carbon fiber;Polyaniline;Modified electrode;Surface complex;Surface complex adsorptive wave
1. [1]
  Ying Li , Yushen Zhao , Kai Chen , Xu Liu , Tingfeng Yi , Li-Feng Chen . Rational Design of Cross-Linked N-Doped C-Sn Nanofibers as Free-Standing Electrodes towards High-Performance Li-Ion Battery Anodes. Acta Physico-Chimica Sinica, 2024, 40(3): 2305007-0. doi: 10.3866/PKU.WHXB202305007
2. [2]
  Li Jiang , Changzheng Chen , Yang Su , Hao Song , Yanmao Dong , Yan Yuan , Li Li . Electrochemical Synthesis of Polyaniline and Its Anticorrosive Application: Improvement and Innovative Design of the “Chemical Synthesis of Polyaniline” Experiment. University Chemistry, 2024, 39(3): 336-344. doi: 10.3866/PKU.DXHX202309002
3. [3]
  Jun Huang , Pengfei Nie , Yongchao Lu , Jiayang Li , Yiwen Wang , Jianyun Liu . 丝光沸石负载自支撑氮掺杂多孔碳纳米纤维电容器及高效选择性去除硬度离子. Acta Physico-Chimica Sinica, 2025, 41(7): 100066-0. doi: 10.1016/j.actphy.2025.100066
4. [4]
  Zhaoxuan ZHU , Lixin WANG , Xiaoning TANG , Long LI , Yan SHI , Jiaojing SHAO . Application of poly(vinyl alcohol) conductive hydrogel electrolytes in zinc ion batteries. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 893-902. doi: 10.11862/CJIC.20240368
5. [5]
  Qin′ai FENG , Jianjun LI , Lili ZHANG , Linxin WU , Huiling WANG , Wenjing HOU , Lei WANG , Mingjie REN . Amphiphilic surface modification of magnetic adsorbents and its adsorption properties of two microplastics. Chinese Journal of Inorganic Chemistry, 2026, 42(4): 789-807. doi: 10.11862/CJIC.20250208
6. [6]
  Xia ZHANG , Yushi BAI , Xi CHANG , Han ZHANG , Haoyu ZHANG , Liman PENG , Shushu HUANG . Preparation and photocatalytic degradation performance of rhodamine B of BiOCl/polyaniline. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 913-922. doi: 10.11862/CJIC.20240255
7. [7]
  Shengbiao Zheng , Liang Li , Nini Zhang , Ruimin Bao , Ruizhang Hu , Jing Tang . Metal-Organic Framework-Derived Materials Modified Electrode for Electrochemical Sensing of Tert-Butylhydroquinone: A Recommended Comprehensive Chemistry Experiment for Translating Research Results. University Chemistry, 2024, 39(7): 345-353. doi: 10.3866/PKU.DXHX202310096
8. [8]
  Qi Li , Pingan Li , Zetong Liu , Jiahui Zhang , Hao Zhang , Weilai Yu , Xianluo Hu . Fabricating Micro/Nanostructured Separators and Electrode Materials by Coaxial Electrospinning for Lithium-Ion Batteries: From Fundamentals to Applications. Acta Physico-Chimica Sinica, 2024, 40(10): 2311030-0. doi: 10.3866/PKU.WHXB202311030
9. [9]
  Qingyu Yang , Yuanhai Yu , Yanliu Wu , Ting Yang , Le Zhong , Wenhong Ruan , Jie Li . Digital Intelligence-Empowered Exploration of Copolymerized Polyacrylonitrile Synthesis and Application Experiments for Carbon Fiber Precursors. University Chemistry, 2026, 41(1): 41-56. doi: 10.12461/PKU.DXHX202506010
10. [10]
  Yuying JIANG , Jia LUO , Zhan GAO . Development status and prospects of solid oxide cell high entropy electrode catalysts. Chinese Journal of Inorganic Chemistry, 2025, 41(9): 1719-1730. doi: 10.11862/CJIC.20250124
11. [11]
  Shuhong Xiang , Lv Yang , Yingsheng Xu , Guoxin Cao , Hongjian Zhou . Selective electrosorption of Cs(Ⅰ) from high-salinity radioactive wastewater using CNT-interspersed potassium zinc ferrocyanide electrodes. Acta Physico-Chimica Sinica, 2025, 41(9): 100097-0. doi: 10.1016/j.actphy.2025.100097
12. [12]
  Yu'ang Liu , Yuechao Wu , Junyu Huang , Tao Wang , Xiaohong Liu , Tianying Yan . Computation of Absolute Electrode Potential of Standard Hydrogen Electrode Using Ab Initio Method. University Chemistry, 2025, 40(3): 215-222. doi: 10.12461/PKU.DXHX202407112
13. [13]
  Qianwen Han , Tenglong Zhu , Qiuqiu Lü , Mahong Yu , Qin Zhong . Performance and Electrochemical Asymmetry Optimization of Hydrogen Electrode Supported Reversible Solid Oxide Cell. Acta Physico-Chimica Sinica, 2025, 41(1): 100005-0. doi: 10.3866/PKU.WHXB202309037
14. [14]
  Wang Wang , Yucheng Liu , Shengli Chen . Use of NiFe Layered Double Hydroxide as Electrocatalyst in Oxygen Evolution Reaction: Catalytic Mechanisms, Electrode Design, and Durability. Acta Physico-Chimica Sinica, 2024, 40(2): 2303059-0. doi: 10.3866/PKU.WHXB202303059
15. [15]
  Kaimin WANG , Na HE , Shiyi LI , Xuling BAI , Weiqing SUN , Yanqing YE , Yulu MA . Synthesis, Hirshfeld surface analysis and properties of two Zn(Ⅱ)/Ni(Ⅱ) coordination polymers. Chinese Journal of Inorganic Chemistry, 2026, 42(1): 55-64. doi: 10.11862/CJIC.20250178
16. [16]
  Limin Zhang , Mengmeng Liu , Yang Tian . Size Determines Performance: A Novel Experimental Design for Voltammetric Teaching at Microelectrode and Glassy Carbon Electrode. University Chemistry, 2025, 40(11): 281-288. doi: 10.12461/PKU.DXHX202412047
17. [17]
  Chunai Dai , Yongsheng Han , Luting Yan , Zhen Li , Yingze Cao . Preparation of Superhydrophobic Surfaces and Their Application in Oily Wastewater Treatment: Design of a Comprehensive Physical Chemistry Innovation Experiment. University Chemistry, 2024, 39(2): 34-40. doi: 10.3866/PKU.DXHX202307081
18. [18]
  Kezhen Qi , Bei Cheng , Kaiqiang Xu . Ultrafast interfacial charge transfer promoted by the LSPR of Au nanoparticles for photocatalytic H₂ evolution. Acta Physico-Chimica Sinica, 2026, 42(3): 100205-0. doi: 10.1016/j.actphy.2025.100205
19. [19]
  Minghui Wu , Markus Mühlinghaus , Xuechao Li , Chaojie Xu , Qiang Chen , Haiming Zhang , Klaus Müllen , Lifeng Chi . On-Surface Synthesis of Chevron-Shaped Conjugated Ladder Polymers Consisting of Benzo[a]azulene Units. Acta Physico-Chimica Sinica, 2024, 40(8): 2307024-0. doi: 10.3866/PKU.WHXB202307024
20. [20]
  Geyang Song , Dong Xue , Gang Li . Recent Advances in Transition Metal-Catalyzed Synthesis of Anilines from Aryl Halides. University Chemistry, 2024, 39(2): 321-329. doi: 10.3866/PKU.DXHX202308030

Get Citation

PDF

XML

Metrics

PDF Downloads(2778)
Abstract views(3963)
HTML views(35)

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

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return