Black Tungsten Nitride as a Metallic Photocatalyst for Overall Water Splitting Operable at up to 765 nm
Black Tungsten Nitride as a Metallic Photocatalyst for Overall Water Splitting Operable at up to 765 nm
复制标题
黑色氮化钨作为金属光催化剂，可在高达 765 nm 的波长下进行整体水分解
DOI：
10.1002/anie.201702943
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Yang Hua Gui
中科院分区：
文献类型：
--
作者：
Wang Yu Lei;Nie Ting;Li Yu Hang;Wang Xue Lu;Zheng Li Rong;Chen Ai Ping;Gong Xue Qing;Yang Hua Gui
半导体光催化剂很难用于700 nm以上的水分解，这既是由于热力学方面的原因，也是由于活化势垒的原因。作为光催化剂的金属材料通过产生电子-空穴对的带间跃迁来克服这一限制；然而，金属光催化剂在整体分解水方面的应用从未实现过。黑色氮化钨现在被用作金属光催化剂，在高达765 nm的波长下进行整体水分解。实验和理论结果共同证实了金属性质在红光照射下对氮化钨表现出的光催化活性起着重要作用。这项工作是第一个红光响应型整体分解水的光催化剂，并可能在寻找有效的太阳能利用的金属材料光催化剂方面开辟一个有前途的场所。
Semiconductor photocatalysts are hardly employed for overall water splitting beyond 700 nm, which is due to both thermodynamic aspects and activation barriers. Metallic materials as photocatalysts are known to overcome this limitation through interband transitions for creating electron–hole pairs; however, the application of metallic photocatalysts for overall water splitting has never been fulfilled. Black tungsten nitride is now employed as a metallic photocatalyst for overall water splitting at wavelengths of up to 765 nm. Experimental and theoretical results together confirm that metallic properties play a substantial role in exhibiting photocatalytic activity under red‐light irradiation for tungsten nitride. This work represents the first red‐light responsive photocatalyst for overall water splitting, and may open a promising venue in searching of metallic materials as efficient photocatalysts for solar energy utilization.