Two-Step Synthesis of Laminar Vanadate via a Facile Hydrothermal Route and Enhancing the Photocatalytic Reduction of CO2 into Solar Fuel through Tuning of the Oxygen Vacancies by in Situ Vacuum Illumination Treatment

2018 ◽  
Vol 1 (12) ◽  
pp. 6857-6864 ◽  
Author(s):  
Xingyu Chen ◽  
Chen Zhuang ◽  
Xiaoqi Wang ◽  
Aizhen Liao ◽  
Liang Li ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Photocatalytic Reduction ◽  
Solar Fuel ◽  
Hydrothermal Route ◽  
Facile Hydrothermal Route ◽  
Reduction Of Co2

In-situ Synthesis of WO3-x/MoO3-x Heterojunction with Abundant Oxygen Vacancies for Efficient Photocatalytic Reduction of CO2

2021 ◽  
pp. 126582
Author(s):  
Yang Liu ◽  
Xinglong Dong ◽  
Qing Yuan ◽  
Jingshuang Liang ◽  
Yuanliang Zhou ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
In Situ Synthesis ◽  
Photocatalytic Reduction ◽  
Reduction Of Co2

scholarly journals Sodium Titanate Synthesis For The Photocatalytic Degradation of NO

2021 ◽  
Author(s):  
Marco Antonio Cueto Bastida ◽  
Yadira Guadalupe Maldonado ◽  
Yolanda Reyes Vidal ◽  
Myriam Solis Lopez ◽  
Eduardo Coutino Gonzalez ◽  
...  
Keyword(s):  
Flow Rate ◽  
Sodium Titanate ◽  
Photocatalytic Reduction ◽  
Mass Ratio ◽  
Hydrothermal Route ◽  
Reduction Of No ◽  
Oxide Phases ◽  
Photocatalytic Reduction Of No

Abstract The synthesis and characterization of sodium titanates (ST) and its evaluation in the photocatalytic reduction of nitric oxide (NO) is described in this contribution. The materials were synthesized by an hydrothermal route using the following parameters; 5 M NaOH concentration used as TiO2 mineralizer agent, under 170 °C for 48 hours, and a dose of TiO2 of 0.06 mg/mL (expressed as the mass ratio of TiO2/mL with respect to NaOH); resulting in tri- and hexa- ST. A nanotubular morphology was observed for the ST as proved by scanning electron microscopy (SEM) and a subsequent heat-treatment at 400 °C allowed a complete transformation of tri- to hexa- sodium titanates to modify the bandgap. The obtained ST were impregnated with Ag+ and Zn+ cations, respectively (ST-Ag, ST-Zn), to tune the bandgap of the materials. XPS analysis of the ST-Ag materials showed evidence of metallic Ag pointing to the formation of silver nanoparticles, whereas for ST-Zn oxide phases were mainly spotted. The materials were evaluated for the photocatalytic reduction of NO using a reactor fed with a continuous flow rate of NO, generated in situ, at a flow rate of 280 ml/min using nitrogen and a 253 nm wavelength UV irradiation source. The photocatalytic tests showed that pristine ST (tri and hexa-titanate) was the photocatalyst that displayed the best performance in the reduction of NO with respect to the impregnated samples (ST-Ag, ST-Zn). Maximum efficiencies of 80% degradation were reached when using 1 g of photocatalyst with a flow of 280 ml/min and a lamp of 253 nm.

Construction of highly efficient Z-scheme ZnxCd1-xS/Au@g-C3N4 ternary heterojunction composite for visible-light-driven photocatalytic reduction of CO2 to solar fuel

2021 ◽  
Vol 282 ◽  
pp. 119600
Author(s):  
Puttaswamy Madhusudan ◽  
Run Shi ◽  
Shengling Xiang ◽  
Mengtian Jin ◽  
Bananakere Nanjegowda Chandrashekar ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Reduction ◽  
Solar Fuel ◽  
Highly Efficient ◽  
Visible Light Driven ◽  
Reduction Of Co2

scholarly journals Design and fabrication of semiconductor photocatalyst for photocatalytic reduction of CO2 to solar fuel

2014 ◽  
Vol 57 (1) ◽  
pp. 70-100 ◽  
Author(s):  
Xin Li ◽  
Jiuqing Wen ◽  
Jingxiang Low ◽  
Yueping Fang ◽  
Jiaguo Yu
Keyword(s):  
Photocatalytic Reduction ◽  
Solar Fuel ◽  
Reduction Of Co2 ◽  
Semiconductor Photocatalyst

Photocatalytic Reduction of CO2 into CH4 over Ru-doped TiO2: Synergy of Ru and Oxygen Vacancies

2021 ◽  
Author(s):  
Yimeng Zhou ◽  
Qianxiao Zhang ◽  
Xiangli Shi ◽  
Qi Song ◽  
Changjian Zhou ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Photocatalytic Reduction ◽  
Doped Tio2 ◽  
Reduction Of Co2

Photocatalytic reduction of CO2 with H2O to CH4 on Cu(i) supported TiO2 nanosheets with defective {001} facets

2015 ◽  
Vol 17 (15) ◽  
pp. 9761-9770 ◽  
Author(s):  
Shuying Zhu ◽  
Shijing Liang ◽  
Yuecong Tong ◽  
Xiaohan An ◽  
Jinlin Long ◽  
...  
Keyword(s):  
High Activity ◽  
Oxygen Vacancies ◽  
Photocatalytic Reduction ◽  
Surface Oxygen ◽  
Tio2 Nanosheets ◽  
Supported Tio2 ◽  
Reduction Of Co2

A series of Cu–TiO2-x has been reasonably designed and synthesized as efficient photocatalysts for the reduction of CO2 with H2O to CH4. It is found that the high activity may be contributed by the co-existence of surface oxygen vacancies and Cu(i) species on {001} facets of TiO2.

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