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Bi19Br3S27纳米线的界面工程提高了近红外光下金属光催化CO2还原活性
作者:小柯机器人 发布时间:2021/4/18 17:55:10

南方科技大学陈洪团队报道了Bi19Br3S27纳米线的界面工程提高了近红外光下金属光催化CO2还原活性。 相关研究成果于2021年4月14日发表在国际知名学术期刊《美国化学会杂志》。

开发高效的光催化剂,利用太阳辐射将二氧化碳转化为太阳能燃料,对能源可持续性和碳中和具有重要意义。

该文通过碱蚀引入界面重构策略,制备了一种具有丰富的Br和S双空位的纳米线光催化剂V–Bi19Br3S27,其表面Bi–O键合引入了显著的近红外(NIR)光响应。所制备的V–Bi19Br3S27纳米线在近红外光照下单独激发时,表现出高效的光催化还原性能,将CO2转化为CH3OH。不含任何助催化剂和牺牲剂的金属缺陷V–Bi19Br3S27显示出比Bi19Br3S27纳米线高2.3倍的CH3OH生成量。在原子尺度仔细地解释了界面结构演化和反应机理。

该研究工作为开发高性能硫基近红外光催化剂,将二氧化碳光子还原成乙醇,获得高价值的太阳能燃料化学品提供了独特的界面工程策略,为有效利用延伸到近红外范围的太阳辐射能,实现碳中和目标铺平了道路。

附:英文原文

Title: Interfacial Engineering of Bi19Br3S27 Nanowires Promotes Metallic Photocatalytic CO2 Reduction Activity under Near-Infrared Light Irradiation

Author: Jun Li, Wenfeng Pan, Qiaoyun Liu, Zhiquan Chen, Zhijie Chen, Xuezhen Feng, Hong Chen

Issue&Volume: April 14, 2021

Abstract: Developing highly efficient photocatalysts to utilize solar radiation for converting CO2 into solar fuels is of great importance for energy sustainability and carbon neutralization. Herein, through an alkali-etching-introduced interface reconstruction strategy, a nanowire photocatalyst denoted as V–Bi19Br3S27, with rich Br and S dual-vacancies and surface Bi–O bonding introduced significant near-infrared (NIR) light response, has been developed. The as-obtained V–Bi19Br3S27 nanowires exhibit a highly efficient metallic photocatalytic reduction property for converting CO2 into CH3OH when excited solely under NIR light irradiation. Free of any cocatalyst and sacrificial agent, metallic defective V–Bi19Br3S27 shows 2.3-fold higher CH3OH generation than Bi19Br3S27 nanowires. The detailed interfacial structure evolution and reaction mechanism have been carefully illustrated down to the atomic scale. This work provides a unique interfacial engineering strategy for developing high-performance sulfur-based NIR photocatalysts for photon reducing CO2 into alcohol for achieving high-value solar fuel chemicals, which paves the way for efficiently using the solar radiation energy extending to the NIR range to achieve the carbon neutralization goal.

DOI: 10.1021/jacs.1c01109

Source: https://pubs.acs.org/doi/10.1021/jacs.1c01109

 

期刊信息

JACS:《美国化学会志》,创刊于1879年。隶属于美国化学会,最新IF:14.612
官方网址:https://pubs.acs.org/journal/jacsat
投稿链接:https://acsparagonplus.acs.org/psweb/loginForm?code=1000