棒状Co3S4电催化硫氧化辅助析氢
Rod-shaped Co3S4 electrocatalyst for assisting hydrogen evolution during sulfur oxidation
谢寒露 1张云怀1
作者信息
- 1. 重庆大学化学化工学院，重庆市 401331
- 折叠
摘要
目前，石油精炼、制革厂和石化厂产生的大量硫化物排放对环境造成了严重破坏。通常采用的硫化物净化方法为化学沉淀和生物氧化法，这些方法需要大量的能源消耗。相比之下，硫氧化反应（SOR）具有更大的热力学和动力学优势。并且将SOR与HER相结合，可以降低能量投入，减轻环境污染，回收有价值的硫化物，从而使硫离子氧化的同时产生绿色氢气。本研究通过简单的两步水热法合成了具有较大比表面积和较多活性位点的Co3S4纳米棒，并系统研究其硫氧化辅助析氢性能。电化学测试表明，Co3S4具有优异的SOR活性。在1.0 M NaOH和1.0 M Na2S电解液中，达到10和100 mA cm-2仅需0.265和0.442 V（vs. RHE）的电位；同时，在HER测试中，Co3S4同样表现出较高活性，在50 mA cm-2下仅需336 mV（vs. RHE）的过电位。基于其优异的SOR和HER性能，将Co3S4同时用作阳极和阴极组装成SOR-HER双电极耦合体系。结果表明，该体系在10和100 mA cm-2下仅需0.54和1.82 V（vs. RHE），并可在0.8 V（vs. RHE）下稳定运行超过72 h，表现出良好的应用前景。为非贵金属电催化材料在硫氧化耦合制氢中的应用提供了实验基础。
Abstract
Currently, the massive emission of sulfur-containing compounds from petroleum refineries, tanneries, and petrochemical plants has caused severe environmental damage. The conventional purification methods for sulfur-containing compounds, such as chemical precipitation and biological oxidation, are associated with high energy consumption. In contrast, the sulfur oxidation reaction (SOR) offers significant thermodynamic and kinetic advantages. Furthermore, integrating SOR with the hydrogen evolution reaction (HER) can reduce energy input, mitigate environmental pollution, recover valuable sulfur-containing compounds, while simultaneously oxidizing sulfide ions and producing green hydrogen. In this study, Co3S4 nanorods with a large specific surface area and abundant active sites were synthesized via a simple two-step hydrothermal method, and their sulfur oxidation-assisted hydrogen evolution performance was systematically investigated. Electrochemical tests demonstrated that Co3S4 exhibits excellent SOR activity: in 1.0 M NaOH and 1.0 M Na2S electrolyte solutions, the potentials required to reach 10 and 100 mA cm-2 are only 0.265 and 0.442 V (vs. RHE), respectively. Meanwhile, Co3S4 also showed high activity in HER tests, requiring an overpotential of merely 336 mV (vs. RHE) at 50 mA cm-2. Benefiting from its superior SOR and HER performance, Co3S4 was employed as both the anode and cathode to assemble a SOR-HER dual-electrode coupling system. The results indicated that this system only requires 0.54 and 1.82 V (vs. RHE) to achieve 10 and 100 mA cm-2, respectively, and can operate stably for more than 72 hours at 0.8 V (vs. RHE), demonstrating promising application prospects. This work provides an experimental foundation for the application of non-precious metal electrocatalytic materials in sulfur oxidation-coupled hydrogen production.In this paper.关键词
钴基硫化物/硫氧化反应/电催化/辅助析氢Key words
Co-based sulfides catalysis/sulfide oxidation reaction/electrocatalysis/hydrogen evolution assisted by sulfide oxidation引用本文复制引用
谢寒露,张云怀.棒状Co3S4电催化硫氧化辅助析氢[EB/OL].(2026-05-26)[2026-05-28].http://www.paper.edu.cn/releasepaper/content/202605-116.学科分类
氢能、氢能利用
