Simple Preparation of Hierarchically Porous Ce/TiO2/Graphitic Carbon Microspheres for the Reduction of CO2 with H2O under Simulated Solar Irradiation | Zendy

Zhang Cheng-li | Zendy; Weiping Zhang | Zendy; Jing Qian | Zendy; Hongdan Cheng | Zendy; Shaoyun Ren | Zendy; Chaosheng Zhang | Zendy; MA Jian-hua | Zendy; Zhiyong Guo | Zendy

Open Access

Simple Preparation of Hierarchically Porous Ce/TiO₂/Graphitic Carbon Microspheres for the Reduction of CO₂ with H₂O under Simulated Solar Irradiation

Author(s) -

Zhang Cheng-li,

Weiping Zhang,

Jing Qian,

Hongdan Cheng,

Shaoyun Ren,

Chaosheng Zhang,

MA Jian-hua,

Zhiyong Guo

Publication year - 2019

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b01587

Subject(s) - photocatalysis , materials science , carbon fibers , porosity , scanning electron microscope , irradiation , adsorption , chemical engineering , analytical chemistry (journal) , nuclear chemistry , composite number , chemistry , catalysis , composite material , organic chemistry , physics , nuclear physics , engineering

Hierarchically porous Ce/TiO 2 /graphitic carbon microsphere composites ( x Ce/TiO 2 /GCM, where x = 0.2, 1.0, 2.0, 5.0 mmol·L -1 ) were prepared for the first time by using a simple colloidal crystal template and characterized by X-ray diffraction, nitrogen adsorption and desorption, scanning electron microscopy, and ultraviolet-visible diffuse reflectance spectra. In addition, the photocatalytic activity of CO 2 reduction by H 2 O under simulated solar irradiation was studied. The results showed that the Ce/TiO 2 /GCM composite material was characterized by large porosity, high concentration of metal compounds and graphitized carbon matrix, and the content of acetone solvent having a great impact on its form. In terms of the photocatalytic CO 2 reaction, the CH 4 and CO productions were 4.587 and 357.851 μmol·g -1 , respectively. The 2Ce/TiO 2 /GCM photocatalyst gave the highest production rate for three products. Under simulated solar irradiation, the Ce/TiO 2 /GCM has excellent photocatalytic activity in the photoreduction of CO 2 from H 2 O, which was related to the special composition and the Ce/TiO 2 /GCM structure.

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