Photocatalytic Hydrogen Production by Boron Modified TiO2/Carbon Nitride Heterojunctions

被引：35

作者：

Christoforidis, Konstantinos C. ^{[1
,2
,3
,4
]}

Montini, Tiziano ^{[2
,3
]}

Fittipaldi, Maria ^{[5
,6
]}

Delgado Jaen, Juan Jose ^{[7
]}

Fornasiero, Paolo ^{[2
,3
]}

机构：

[1] Democritus Univ Thrace, Dept Environm Engn, GR-67100 Xanthi, Greece

[2] Univ Trieste, CNR, ICCOM, Dept Chem & Pharmaceut Sci, I-34127 Trieste, Italy

[3] Univ Trieste, INSTM, I-34127 Trieste, Italy

[4] Univ Strasbourg, ICPEES, ECPM, F-67087 Strasbourg, France

[5] Univ Florence, INSTM, I-50019 Sesto Fiorentino, Italy

[6] Univ Florence, Dept Phys & Astron, I-50019 Sesto Fiorentino, Italy

[7] Univ Cadiz, Fac Ciencias, Dept Ciencia Mat & Ingn Met & Quim Inorgan, Puerto Real 11510, Spain

来源：

CHEMCATCHEM | 2019年 / 11卷 / 24期

关键词：

Boron; carbon nitride; hydrogen; photocatalysis; photoreforming; TiO2; GRAPHITIC CARBON NITRIDE; ELECTRON-PARAMAGNETIC-RESONANCE; VISIBLE-LIGHT PHOTOCATALYST; CO-DOPED TIO2; TITANIUM-DIOXIDE; NANOSHEETS; WATER; PHOTOREDUCTION; NANOPARTICLES; NANOMATERIALS;

D O I：

10.1002/cctc.201901703

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：

Boron-doped anatase TiO2 particles were effectively coupled with carbon nitride (CN) forming nanocomposites. The materials were fully characterized by DR-UV-Vis, N-2 adsorption-desorption isotherms, XRD, Raman, FTIR, TGA, XPS, TEM, electron energy loss spectroscopy, photoluminescence, and electron paramagnetic spectroscopy (EPR) spectroscopy. The developed heterojunctions were applied as photocatalysts for hydrogen (H-2) evolution by the photoreforming process of ethanol under solar irradiation, using minimal amount of Pt nanoparticles (0.1 wt. %) as co-catalyst. The effects of boron addition and CN content were evaluated and optimized nanocomposite presented 85 % increase in H-2 evolution compared with the pure anatase TiO2 catalyst. The observed higher H-2 evolution rates were ascribed to improvements in charge formation and separation efficiency due to the B-dopant and the presence of CN.

引用

页码：6408 / 6416

页数：9

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