Boosting hydrogen production from formic acid by the visible-light-response nickel-modified cadmium sulfide
Boosting hydrogen production from formic acid by the visible-light-response nickel-modified cadmium sulfide
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DOI：
10.1016/j.ijhydene.2024.01.146
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发表时间：
2024-02
影响因子：
7.2
通讯作者：
Yanzhao Zou;Shan Yu;Jiale Ye;Chao Duan;Yuehan Cao;Zhengyue Huang;Jie Fu;Ying Zhou
中科院分区：
文献类型：
--
作者：
Yanzhao Zou;Shan Yu;Jiale Ye;Chao Duan;Yuehan Cao;Zhengyue Huang;Jie Fu;Ying Zhou
利用光催化技术对甲酸脱氢是满足日益增长的氢需求的一种有吸引力的策略。针对目前基于CdS的FA脱氢光催化材料的改性策略复杂、可见光响应机制不明确等问题，构建了一种简单的表面镍修饰CdS纳米晶体，以促进FA制氢。利用原位红外光谱和电子自旋共振技术对FA的整个光催化分解过程进行了研究，这在以往的研究中是有限的。表面镍改性促进了甲酸在材料表面的吸附和关键中间羟基自由基的生成，从而加快了制氢速度，增强了稳定性。辐照48 h后，CdS材料的光催化活性比未改性CdS材料高12.8倍。本研究为构建简单高效的可见光响应cds光催化剂在温和条件下催化FA制氢提供了新途径。
Dehydrogenation of formic acid (FA) via photocatalytic technology is an attractive strategy to meet the enhanced demand of hydrogen. Regarding the existing complex modification strategies and unclear mechanism of visible-light response CdS-based photocatalytic materials for dehydrogenation of FA, a simple surface nickel-modified CdS nanocrystals has been constructed for boosting the hydrogen production from FA. In situ infrared spectroscopy and electron spin resonance technology were utilized to study the entire photocatalytic decomposition process of FA, which have limited study in previous work. The surface nickel-modification promoted the adsorption of formic acid on the material surface and the generation of key intermediate hydroxyl radicals, leading to faster hydrogen production and enhanced stability. Consequently, the photocatalytic activity was 12.8 times higher than that of unmodified CdS materials after 48 h irradiation. This work provides a new approach for constructing simple and efficient visible-light response CdS-based photocatalysts for hydrogen production from FA under mild condition.