无需电子媒介体的近红外光诱导Z型全分解水光催化剂

Near-infrared light-inducible Z-scheme overall water-splitting photocatalyst without an electron mediator.

作者信息

Irie Hiroshi, Yoda Masaomi, Miyashita Hiroshi, Hanada Ryo, Takashima Toshihiro, Kuroiwa Haruna

机构信息

Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.

Clean Energy Research Center, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.

出版信息

Chem Commun (Camb). 2023 Sep 14;59(74):11057-11060. doi: 10.1039/d3cc03156j.

DOI:10.1039/d3cc03156j

PMID:37603379

Abstract

We facilely prepared a solid-state heterojunction photocatalyst in which silver vanadium oxide (AgVO) and zinc rhodium oxide (ZnRhO) as oxygen and hydrogen evolution photocatalysts, respectively, were directly connected to generate AgVO/ZnRhO. AgVO/ZnRhO photocatalyzed overall pure-water splitting without any electron mediator under irradiation with near-infrared light at wavelengths of up to 910 nm. The key points are that the conduction bottom potential of AgVO is almost the same as the valence band top potential of ZnRhO, and that the bandgaps of AgVO and ZnRhO are 1.4 and 1.2 eV, respectively.

摘要

我们轻松制备了一种固态异质结光催化剂，其中分别作为析氧和析氢光催化剂的氧化银钒（AgVO）和氧化锌铑（ZnRhO）直接相连，生成了AgVO/ZnRhO。在波长高达910nm的近红外光照射下，AgVO/ZnRhO光催化实现了无任何电子介质的纯水全分解。关键在于AgVO的导带底电位与ZnRhO的价带顶电位几乎相同，且AgVO和ZnRhO的带隙分别为1.4eV和1.2eV。