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Статья

Platy BaTaO<sub>2</sub>N Crystals Fabricated from K<sub>2</sub>CO<sub>3</sub>–KCl Binary Flux for Photocatalytic H<sub>2</sub> Evolution

Ying LuoDepartment of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, JapanZheng WangLaboratory of Atmospheric Environment and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, ChinaTetsuya YamadaResearch Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, JapanKunio YubutaInstitute for Materials Research, Tohoku University, Sendai 980-8577, JapanSayaka SuzukiDepartment of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, JapanTakashi HisatomiResearch Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, JapanKazunari DomenOffice of University Professors, The University of Tokyo, 2-11-6 Yayoi, Bunkyo-ku, Tokyo 113-8656, JapanKatsuya TeshimaDepartment of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
2020en
ABI

Аннотация

The performance of particulate photocatalysts for solar H2 production highly depends on the unique morphology and tailored shape. Herein, we successfully fabricated a highly crystalline BaTaO2N crystal with a plate-like structure from a K2CO3–KCl binary flux under a nitridation atmosphere. The fabricated platy BaTaO2N was characterized, and the results as well as formation mechanism were discussed accordingly. Owing to the generation of oxo-complex [TaO3]− by the assistance of CO32– and the lattice match of the BaTaO2N (111) plane with the Ba5Ta4O15 (001) plane, the platy BaTaO2N crystals with well-developed {111} facets were formed via the simultaneous formation and transformation of Ba5Ta4O15. Upon optimization of the molar ratio of K2CO3 and KCl, an excellent photocatalytic performance for H2 evolution was obtained at the molar ratio of 20/80 due to the plate-like structure and high crystallinity of the BaTaO2N photocatalyst. This finding provides a facile approach for the fabrication of shape-controlled and highly crystallized (oxy)nitride photocatalysts aimed at efficient solar H2 production.

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Идентификаторы

DOI
10.1021/acsaem.0c01739

Цитирования и источники

Цитирований: 3Использованных источников: 0
Показатели — AkademScholar