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Fabrication of 0D/2D TiO2 Nanodots/g-C3N4 S-scheme heterojunction photocatalyst for efficient photocatalytic overall water splitting
Applied Surface Science ( IF 6.3 ) Pub Date : 2021-09-15 , DOI: 10.1016/j.apsusc.2021.151287
Yabin Jiang 1, 2 , Zongzhao Sun 1 , Qianwen Chen 1 , Chi Cao 3 , Yun Zhao 1 , Wensheng Yang 4 , Lei Zeng 1 , Limin Huang 1
Affiliation  

It is a considerable challenge to design a highly efficient photocatalyst for overall water splitting. Herein, a zero-dimension/two-dimension (0D/2D) TiO2 nanodots/g-C3N4 step-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 TiO2 nanodots 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 TiO2 and g-C3N4. This work presents a simple method to construct an efficient photocatalyst with S-Scheme heterojunction for overall water splitting.



中文翻译:

0D/2D TiO2 Nanodots/g-C3N4 S-scheme异质结光催化剂的制备,用于高效光催化整体水分解

设计一种用于整体水分解的高效光催化剂是一个相当大的挑战。在此,通过简单的相界面反应制备了用于整体水分解的零维/二维(0D/2D)TiO 2纳米点/gC 3 N 4阶梯式(S-scheme)光催化剂(TOCN)。TOCN在模拟阳光下表现出更高的光催化分解水活性,比TiO 2纳米点和gC 3 N 4高约2.2和1.7倍, 分别。光催化性能的增强主要归因于形成了 S 型异质结,而不是正常的 II 型异质结,这不仅可以改善电荷分离,而且还保留了 TiO 2和 gC 3 N 4的氧化还原能力。这项工作提出了一种简单的方法来构建具有 S-Scheme 异质结的高效光催化剂,用于整体水分解。

更新日期:2021-09-23
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