Novel ternary composite of LaYAgO4 and TiO2 united with graphene and its complement: Photocatalytic performance of CO2 reduction into methanol. (January 2021)

• Record Type: Journal Article
• Authors: Otgonbayar, Zambaga; Liu, Yin; Cho, Kwang Youn; Jung, Chong-Hun; Oh, Won-Chun
• Is Part Of: Materials science in semiconductor processing. Volume 121(2021)
• Publication Date: 2021-01
• Subjects: Graphene -- Photo-reduction of CO2 -- Semiconductors -- CH3OH; Semiconductors -- Periodicals; Integrated circuits -- Materials -- Periodicals; Semiconducteurs -- Périodiques; Circuits intégrés -- Matériaux -- Périodiques; Electronic journals; 621.38152
• DOI: 10.1016/j.mssp.2020.105456
• Languages: English
• ISSNs: 1369-8001

Abstract

Abstract: In this research, we synthesized a quaternary composite containing a graphene-based LaYAgO4 -Graphene-TiO2 nanocomposite using a hydrothermal method. We examined all prepared samples by means of physical techniques, such as XRD, SEM-EDX, HRTEM, XPS, Raman, and DRS. We tested the photocatalytic activity of the ternary composite for CO2 reduction in a reactor using commercial carbonated water, and the target product was methanol (CH3 OH), detected under UV and Vis light irradiation. The ternary nanocomposite, which contains three times a quaternary composite (LaYAgO4 ), exhibited high photocatalytic activity and improved a sum total of methanol of 12.27% after 48 h reaction time. In a heterogeneous system, the relevance between the Graphene-TiO2 and LaYAgO4 components showed an excellent photoreduction efficiency. This heterojunction presented herein offers a promising route for the rational design of a new class of photocatalysts for various applications in environmental protection and solar-energy conversion.