Novel synthesis of WSe2-Graphene-TiO2 ternary nanocomposite via ultrasonic technics for high photocatalytic reduction of CO2 into CH3OH

被引：47
作者：
Biswas, Md Rokon Ud Dowla [1 ]
Ali, Asghar [1 ]
Cho, Kwang Youn [2 ]
Oh, Won-Chun [1 ]
机构：
[1] Hanseo Univ, Dept Adv Mat Sci & Engn, Seosan 31962, South Korea
[2] Korea Inst Ceram Engn & Technol, Jinju Si, Gyeongsangnam D, South Korea
来源：
ULTRASONICS SONOCHEMISTRY | 2018年 / 42卷
关键词：
Graphene; Photoreduction of CO2; WSe2-G-TiO2; CH3OH; Na2SO3 as a scavenger; ARTIFICIAL NEURAL-NETWORK; SINGLE-LAYER MOS2; HYDROGEN EVOLUTION; CARBON-DIOXIDE; GRAPHENE; TIO2; DEGRADATION; NANOPARTICLES; DESIGN; WATER;
D O I：
10.1016/j.ultsonch.2017.12.030
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
In the present work, we report the development of a WSe2-Graphene-TiO2 ternary nanocomposite via ultrasonic techniques and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. The band-gap of the WSe2-Graphene-TiO2 was estimated to be about 1.62 eV which is suitable for photodegradation process under under ultraviolet UV/Visible light irradiation. The photocatalytic potential of nanocomposites is investigated for CO2 reduction to CH3OH. WSe2-G-TiO2 with an optimum loading of graphene of 8 wt% showed the high photoactivity, gaining a total CH3OH yield of 6.3262 mu mol g(-1) h(-1) after 48 h. This excellent photo reduction activity is owing to the progressive synergistic relation between WSe2/TiO2 and graphene components in our heterogeneous system.
引用
收藏
页码：738 / 746
页数：9
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