Ultrathin Bi2MoO6 Nanosheets for Photocatalysis: Performance Enhancement by Atomic Interfacial Engineering. Issue 26 (28th June 2018)

• Record Type: Journal Article
• Authors: Huang, Yongchao; Li, Kunshan; Li, Siqi; Lin, Ying; Liu, Hong; Tong, Yexiang
• Is Part Of: ChemistrySelect. Volume 3:Issue 26(2018)
• Page Start: 7423
• Page End: 7428
• Publication Date: 2018-06-28
• Subjects: Atomic layers -- Bi2MoO6 nanosheets -- Electric-field -- Oxygen vacancies -- Photocatalysis; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201800908
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Atomically thin two‐dimensional semiconductors provide an ideal platform to establish clear structure‐property relationships in the field of photocatalysis. Herein, we fabricated the atomically thin Bi2 MoO6 nanosheets by a facile and scalable wet‐chemical synthesis approach. Oxygen vacancies were inevitably induced into the nanosheets as the thickness of the nanosheets exposed interior atoms, which are clearly identified by X‐ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) spectra. More intriguingly, the oxygen vacancies formed on the open interfaces could enhance charge transport, further improving the photocatalytic performance. Benefiting from the large surface areas and increased visible light absorption, the present atomically thin Bi2 MoO6 nanosheets display extraordinary high‐performance of photocatalytic degradation of phenol and cycling stability. More importantly, we believe that this achievement in ultrathin two‐dimensional material (atomically thin Bi2 MoO6 nanosheets) could bring new insights into designing high‐performance photocatalysts. Abstract : The present atomically thin Bi2 MoO6 nanosheets display extraordinary high‐performance of photocatalytic degradation of phenol and cycling stability. The superior photocatalytic performance could be attributed to the synergistic effect between the ultrathin 2D structure and the oxygen vacancies cramped in the ultrathin sheets, which improved light harvesting, increased reactive sites and enhanced the efficiency of separation of electron‐hole pairs.