Fabrication of 0D/2D TiO2 Nanodots/g-C3N4 S-scheme heterojunction photocatalyst for efficient photocatalytic overall water splitting
Fabrication of 0D/2D TiO2 Nanodots/g-C3N4 S-scheme heterojunction photocatalyst for efficient photocatalytic overall water splitting
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DOI：
10.1016/j.apsusc.2021.151287
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发表时间：
2022-01
影响因子：
6.7
通讯作者：
Yabin Jiang;Zongzhao Sun;Qianwen Chen;C. Cao;Yun Zhao;Wensheng Yang;Lei Zeng;Limin Huang
中科院分区：
文献类型：
--
作者：
Yabin Jiang;Zongzhao Sun;Qianwen Chen;C. Cao;Yun Zhao;Wensheng Yang;Lei Zeng;Limin Huang
设计一种高效的光催化剂用于整体水分解是一个相当大的挑战。本文采用相界面反应法制备了零维/二维（0 D/2D）TiO 2纳米点/g-C3 N4阶梯式（S-scheme）光催化剂（TOCN），用于水的整体分解. TOCN在模拟太阳光下表现出更高的光催化分解水的活性，分别是TiO 2纳米点和g-C3 N4的2.2倍和1.7倍。光催化性能的提高主要归因于S型异质结的形成，而不是通常的II型异质结，这不仅改善了电荷分离，而且保持了TiO 2和g-C3 N4的氧化还原能力。本工作提出了一种简单的方法来构建一个有效的光催化剂与S-计划异质结的整体水裂解。
It is a considerable challenge to design a highly efficient photocatalyst for overall water splitting. Herein, a zero-dimension/two-dimension (0D/2D) TiO2nanodots/g-C3N4step-scheme (S-scheme) photocatalyst (TOCN) for overall water splitting was prepared by a facile phase interfacial reaction. TOCN showed higher photocatalytic water splitting activity under simulated sunlight, which is about 2.2 and 1.7 times higher than TiO2nanodots and g-C3N4, respectively. The enhancement of photocatalytic performance can be mainly attributed to the formation of S-scheme heterojunction, rather than normal type-II heterojunction, which could not only improve charge separation but also remain the redox ability of TiO2and g-C3N4. This work presents a simple method to construct an efficient photocatalyst with S-Scheme heterojunction for overall water splitting.