Ti基镶嵌金刚石颗粒掺硼金刚石电极及其性能

窦金杰; 刘典宏; 蒋鸾; 李静; 马莉; 魏秋平

doi:10.19976/j.cnki.43-1448/TF.2023077

粉末冶金材料科学与工程 >

2024 , Vol. 29 >Issue 1: 45 - 52

DOI: https://doi.org/10.19976/j.cnki.43-1448/TF.2023077

工艺技术

Ti基镶嵌金刚石颗粒掺硼金刚石电极及其性能

窦金杰 ,
刘典宏 ,
蒋鸾 ,
李静 ,
马莉 ,
魏秋平

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1.中南大学粉末冶金国家重点实验室,长沙 410083;
2.中南大学材料科学与工程学院,长沙 410083

收稿日期: 2023-11-07

修回日期: 2023-11-30

网络出版日期: 2024-03-26

基金资助

国家“十四五”重点研究发展计划(2021YFB3701800); 国家自然科学基金资助项目(52202056,52274370,52071345,51874370); 广东省“十三五”重点研究开发项目(2020B01085001); 湖南省高新技术产业科技创新引领计划(2022GK4037,2022GK4047); 湖南省自然科学基金资助项目(2023JJ40722); 粉末冶金国家重点实验室自主课题(621022230)

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Ti plate embedding diamond particles boron-doped diamond electrode and its properties

DOU Jinjie ,
LIU Dianhong ,
JIANG Luan ,
LI Jing ,
MA Li ,
WEI Qiuping

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1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
2. School of Materials Science and Engineering, Central South University, Changsha 410083, China

Received date: 2023-11-07

Revised date: 2023-11-30

Online published: 2024-03-26

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摘要

利用粉末压片机在Ti片表面镶嵌金刚石颗粒,以此为衬底,通过热丝化学气相沉积技术沉积掺硼金刚石(boron-doped diamond, BDD)薄膜,制备新型Ti基镶嵌金刚石颗粒BDD (Ti/D/BDD)电极,并制备Ti基BDD (Ti/BDD)电极作为对比。采用扫描电子显微镜、拉曼光谱仪和电化学工作站表征电极的形貌、B掺杂水平和电化学性能,利用紫外可见分光光度计测试电极模拟废水降解的效果。结果表明：沉积时间相同时,Ti/D/BDD电极比Ti/BDD电极具有更大的电化学活性面积,更低的薄膜阻抗,使得电极对酸性橙G表现出更高的降解速率,更低的降解能耗。沉积10 h时,Ti/D/BDD电极具有最高的双电层电容(1.87 mF),最低的薄膜电阻(0.4 Ω);降解120 min后,Ti/D/BDD电极的色度移除率比Ti/BDD电极最高可提升53.1%,同时能耗降低14.2%。

关键词： BDD电极; Ti基体; 金刚石颗粒; 电化学性能; 废水降解

本文引用格式

窦金杰 , 刘典宏 , 蒋鸾 , 李静 , 马莉 , 魏秋平 . Ti基镶嵌金刚石颗粒掺硼金刚石电极及其性能[J]. 粉末冶金材料科学与工程, 2024 , 29(1) : 45 -52 . DOI: 10.19976/j.cnki.43-1448/TF.2023077

Abstract

Diamond particles were embeded on the surface of Ti plate by a powder pellet mill, boron-doped diamond (BDD) films were deposited on this substrate by hot filament chemical vapor deposition to prepare a new Ti/D/BDD electrode, and Ti/BDD electrode was prepared for comparision. The morphology, B doping level, and electrochemical performance of the electrode were characterized by scanning electron microscope, Raman spectrometer, and electrochemical workstation, the degradation effect of the electrode simulated wastewater was tested by ultraviolet-visible spectrophotometer. The results show that the Ti/D/BDD electrode has a larger electrochemical active area and lower film impedance than the Ti/BDD electrode at the same deposition time, which makes the electrode show higher degradation rate and lower degradation energy consumption for acid orange G. When deposited for 10 h, Ti/D/BDD electrode has the highest electrical double layer capacitance (1.87 mF) and the lowest film resistance (0.4 Ω); after 120 min of degradation, the chromaticity removal rate of Ti/D/BDD electrode is 53.1% higher than that of Ti/BDD electrode, and the energy consumption is reduced by 14.2%.

Key words： BDD electrode; Ti substrate; diamond particle; electrochemical performance; wastewater degradation

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