Citation: SANG Li-Xia, LIN Jia, GE Hao, LEI Lei. Dynamic Analysis of Carbon Dots/KOH Electrolyte Interface by IMPS/IMVS[J]. Acta Physico-Chimica Sinica, ;2017, 33(12): 2454-2462. doi: 10.3866/PKU.WHXB201706092 shu

Dynamic Analysis of Carbon Dots/KOH Electrolyte Interface by IMPS/IMVS

Enhanced Heat Transfer and Energy Conservation, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

Received Date: 8 May 2017
Revised Date: 31 May 2017

Fund Project: The project was supported by the National Natural Science Foundation of China (51376013).

The dynamic behaviors at the interface of carbon dots and KOH electrolyte were studied using intensity-modulated photocurrent spectroscopy (IMPS) and intensity-modulated photovoltage spectroscopy (IMVS) in the photoelectrochemical hydrogen production from water splitting. The results show that the kinetic parameters like electron transport time (τ_d), electron diffusion coefficient (D_n), electron lifetime (τ_n), and electron diffusion length (L_n) remain unchanged in the light intensity range of 30-90 mW·cm^-2. When the light intensity increases to 110 and 130 mW·cm^-2, τ_d and τ_n increase, while D_n decreases. It is indicated that the photogenerated electrons are mainly transported in the trap-free limited diffusion mode at the electrode/electrolyte interface due to the presence of few defects in carbon dots, which is different from the mode of transport at the semiconductor TiO₂/electrolyte interface. Moreover, the photocarrier collection efficiencies (η_cc) associated with the electron transport time and the electron lifetime are similar for light intensity of 30-130 mW·cm^-2.
- Carbon dots,
- Photoelectrochemical hydrogen production,
- Interface dynamic,
- IMPS,
- IMVS
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]
40. [40]
1. [1]
  Wenli FENG , Lu ZHAO , Yunfeng BAI , Feng FENG . Research progress on ultralong room temperature phosphorescent carbon dots. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 833-846. doi: 10.11862/CJIC.20240308
2. [2]
  Yue WANG , Zhizhi GU , Jingyi DONG , Jie ZHU , Cunguang LIU , Guohan LI , Meichen LU , Jian HAN , Shengnan CAO , Wei WANG . Effects of kelp-derived carbon dots on embryonic development of zebrafish. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1209-1217. doi: 10.11862/CJIC.20230423
3. [3]
  Kaihui Huang , Dejun Chen , Xin Zhang , Rongchen Shen , Peng Zhang , Difa Xu , Xin Li . Constructing Covalent Triazine Frameworks/N-Doped Carbon-Coated Cu₂O S-Scheme Heterojunctions for Boosting Photocatalytic Hydrogen Production. Acta Physico-Chimica Sinica, 2024, 40(12): 2407020-. doi: 10.3866/PKU.WHXB202407020
4. [4]
  Shule Liu . Application of SPC/E Water Model in Molecular Dynamics Teaching Experiments. University Chemistry, 2024, 39(4): 338-342. doi: 10.3866/PKU.DXHX202310029
5. [5]
  Yaling Chen . Basic Theory and Competitive Exam Analysis of Dynamic Isotope Effect. University Chemistry, 2024, 39(8): 403-410. doi: 10.3866/PKU.DXHX202311093
6. [6]
  Jiayu Gu , Siqi Wang , Jun Ling . Kinetics of Living Copolymerization: A Brief Discussion. University Chemistry, 2025, 40(4): 100-107. doi: 10.12461/PKU.DXHX202406012
7. [7]
  Jinfu Ma , Hui Lu , Jiandong Wu , Zhongli Zou . Teaching Design of Electrochemical Principles Course Based on “Cognitive Laws”: Kinetics of Electron Transfer Steps. University Chemistry, 2024, 39(3): 174-177. doi: 10.3866/PKU.DXHX202309052
8. [8]
  Yeyun Zhang , Ling Fan , Yanmei Wang , Zhenfeng Shang . Development and Application of Kinetic Reaction Flasks in Physical Chemistry Experimental Teaching. University Chemistry, 2024, 39(4): 100-106. doi: 10.3866/PKU.DXHX202308044
9. [9]
  Siyi ZHONG , Xiaowen LIN , Jiaxin LIU , Ruyi WANG , Tao LIANG , Zhengfeng DENG , Ao ZHONG , Cuiping HAN . Targeting imaging and detection of ovarian cancer cells based on fluorescent magnetic carbon dots. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1483-1490. doi: 10.11862/CJIC.20240093
10. [10]
  Kuaibing Wang , Feifei Mao , Weihua Zhang , Bo Lv . Design and Practice of a Comprehensive Teaching Experiment for Preparing Biomass Carbon Dots from Rice Husk. University Chemistry, 2025, 40(5): 342-350. doi: 10.12461/PKU.DXHX202407042
11. [11]
  Xuzhen Wang , Xinkui Wang , Dongxu Tian , Wei Liu . Enhancing the Comprehensive Quality and Innovation Abilities of Graduate Students through a “Student-Centered, Dual Integration and Dual Drive” Teaching Model: A Case Study in the Course of Chemical Reaction Kinetics. University Chemistry, 2024, 39(6): 160-165. doi: 10.3866/PKU.DXHX202401074
12. [12]
  Dexin Tan , Limin Liang , Baoyi Lv , Huiwen Guan , Haicheng Chen , Yanli Wang . Exploring Reverse Teaching Practices in Physical Chemistry Experiment Courses: A Case Study on Chemical Reaction Kinetics. University Chemistry, 2024, 39(11): 79-86. doi: 10.12461/PKU.DXHX202403048
13. [13]
  Shanghua Li , Malin Li , Xiwen Chi , Xin Yin , Zhaodi Luo , Jihong Yu . 基于高离子迁移动力学的取向ZnQ分子筛保护层实现高稳定水系锌金属负极的构筑. Acta Physico-Chimica Sinica, 2025, 41(1): 2309003-. doi: 10.3866/PKU.WHXB202309003
14. [14]
  Li'na ZHONG , Jingling CHEN , Qinghua ZHAO . Synthesis of multi-responsive carbon quantum dots from green carbon sources for detection of iron ions and L-ascorbic acid. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 709-718. doi: 10.11862/CJIC.20240280
15. [15]
  Yiying Yang , Dongju Zhang . Elucidating the Concepts of Thermodynamic Control and Kinetic Control in Chemical Reactions through Theoretical Chemistry Calculations: A Computational Chemistry Experiment on the Diels-Alder Reaction. University Chemistry, 2024, 39(3): 327-335. doi: 10.3866/PKU.DXHX202309074
16. [16]
  Yue Wu , Jun Li , Bo Zhang , Yan Yang , Haibo Li , Xian-Xi Zhang . Research on Kinetic and Thermodynamic Transformations of Organic-Inorganic Hybrid Materials for Fluorescent Anti-Counterfeiting Application information: Introducing a Comprehensive Chemistry Experiment. University Chemistry, 2024, 39(6): 390-399. doi: 10.3866/PKU.DXHX202403028
17. [17]
  You Wu , Chang Cheng , Kezhen Qi , Bei Cheng , Jianjun Zhang , Jiaguo Yu , Liuyang Zhang . ZnO/D-A共轭聚合物S型异质结高效光催化产H₂O₂及其电荷转移动力学研究. Acta Physico-Chimica Sinica, 2024, 40(11): 2406027-. doi: 10.3866/PKU.WHXB202406027
18. [18]
  Yan Li , Xinze Wang , Xue Yao , Shouyun Yu . 基于激发态手性铜催化的烯烃E→Z异构的动力学拆分——推荐一个本科生综合化学实验. University Chemistry, 2024, 39(5): 1-10. doi: 10.3866/PKU.DXHX202309053
19. [19]
  Kai CHEN , Fengshun WU , Shun XIAO , Jinbao ZHANG , Lihua ZHU . PtRu/nitrogen-doped carbon for electrocatalytic methanol oxidation and hydrogen evolution by water electrolysis. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1357-1367. doi: 10.11862/CJIC.20230350
20. [20]
  Yongwei ZHANG , Chuang ZHU , Wenbin WU , Yongyong MA , Heng YANG . Efficient hydrogen evolution reaction activity induced by ZnSe@nitrogen doped porous carbon heterojunction. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 650-660. doi: 10.11862/CJIC.20240386

Get Citation

PDF

XML

Metrics

PDF Downloads(3)
Abstract views(935)
HTML views(69)

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