On the Selectivity of Simultaneous CO2 and N2 Reduction Using TiO2/Carbon Sphere Photocatalysts Prepared by Microwave Treatment and Mounted on Silica Cloth

被引：0

作者：

Kusiak-Nejman, Ewelina ^{[1
]}

Cmielewska, Katarzyna ^{[1
]}

Pelech, Iwona ^{[1
]}

Ekiert, Ewa ^{[1
]}

Staciwa, Piotr ^{[1
]}

Sibera, Daniel ^{[2
]}

Wanag, Agnieszka ^{[1
]}

Kapica-Kozar, Joanna ^{[1
]}

Gano, Marcin ^{[3
]}

Narkiewicz, Urszula ^{[1
]}

Morawski, Antoni W. ^{[1
]}

机构：

[1] West Pomeranian Univ Technol Szczecin, Fac Chem Technol & Engn, Dept Inorgan Chem Technol & Environm Engn, Pulaskiego 10, PL-70322 Szczecin, Poland

[2] West Pomeranian Univ Technol Szczecin, Fac Civil & Environm Engn, Dept Gen Civil Engn, Piastow Ave 50a, PL-70311 Szczecin, Poland

[3] West Pomeranian Univ Technol Szczecin, Fac Chem Technol & Engn, Dept Chem Organ Technol & Polymer Mat, Pulaskiego 10, PL-70322 Szczecin, Poland

来源：

MATERIALS | 2023年 / 16卷 / 17期

关键词：

photocatalytic CO2 reduction; nitrogen fixation; titanium dioxide; carbon spheres; microwave reactor; NITROGEN-FIXATION; DIOXIDE;

D O I：

10.3390/ma16175810

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper presents new photocatalysts obtained by treating carbon spheres (CS) and TiO2 in a microwave reactor at a pressure of 20 atm and a temperature of up to 300 C-? for 15 min and then depositing TiO2/CS composites on glass fibre cloths. Such highly CO2-adsorbing photocatalysts showed photoactivity in the simultaneous water-splitting process, generating H-2, reducing CO2 to CO and CH2, and reducing N-2 to NH3. In addition, calculations of the hydrogen balance involved in all reactions were performed. Adding 1 g of carbon spheres per 1 g of TiO2 maintained the high selectivity of nitrogen fixation at 95.87-99.5%, which was continuously removed from the gas phase into the water as NH4+ ions.

引用

页数：12

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