Facile synthesis of sheet-like N–TiO2/g-C3N4 heterojunctions with highly enhanced and stable visible-light photocatalytic activities

RSC Advances ◽  
2015 ◽  
Vol 5 (43) ◽  
pp. 34281-34291 ◽  
Author(s):  
Wei Li ◽  
Cheng Li ◽  
Bo Chen ◽  
Xiuling Jiao ◽  
Dairong Chen

Sheet-like N–TiO2/g-C3N4 heterojunctions with well-controlled structures as high-efficiency visible-light photocatalysts were synthesized by direct co-calcination of preformed N–TiO2 nanoparticles and g-C3N4 nanosheets.

2015 ◽  
Vol 645-646 ◽  
pp. 368-374
Author(s):  
Yu Long Hu ◽  
Xiao Dong Zhang ◽  
Hong Fang Liu ◽  
Xing Peng Guo

N-doped TiO2 nanoparticle powders were prepared efficiently by the sol-gel method using triethylamine and ammonium hydroxide as composite N precursor. The as-prepared N-doped TiO2 precursor powders were calcined at 300°C in air for 3 h and subsequently annealed at 300°C in air for 2.5 h. The samples were characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, thermo-gravimetric analysis, and X-ray photoelectron spectroscopy. The visible light photocatalytic activities of as-prepared samples were evaluated by photodecomposition of methyl orange (MO). The results show that the as-prepared samples have high visible light photocatalytic activities. Triethylamine produces the N-species doped in TiO2 lattice responsible for the high visible light photocatalytic activity. Ammonium hydroxide makes the gel of the TiO2 nanoparticles nitrided by triethylamine gelate further and facilitates significantly the centrifugation of the gel. An annealing treatment can eliminate effectively the outer N species caused by ammonium hydroxide and the surface organic residues, improve effectively crystallinity, and retain the N species caused by triethylamine.


Crystals ◽  
2016 ◽  
Vol 6 (11) ◽  
pp. 140 ◽  
Author(s):  
Tiekun Jia ◽  
Xiaofeng Wang ◽  
Fei Long ◽  
Jili Li ◽  
Zhihua Kang ◽  
...  

RSC Advances ◽  
2015 ◽  
Vol 5 (109) ◽  
pp. 89940-89950 ◽  
Author(s):  
Fangzhi Wang ◽  
Wenjun Li ◽  
Shaonan Gu ◽  
Hongda Li ◽  
Hualei Zhou ◽  
...  

Novel In2S3/ZnWO4 heterojunction photocatalysts with high-efficiency visible-light-driven photocatalytic activities were synthesized by a hydrothermal and surface-functionalized method.


2021 ◽  
Author(s):  
Haihui Yu ◽  
Bing Wei ◽  
Junping Wang ◽  
Sai Zeng ◽  
Haiqi Zhao ◽  
...  

A novel type of photocatalyst SiW12/α-Fe2O3 created by combining SiW12 NPs and α-Fe2O3 nanorings was synthesized through “step to step” method. The structure, composition, morphology and the interaction between SiW12...


2008 ◽  
Vol 254 (13) ◽  
pp. 3762-3766 ◽  
Author(s):  
Ming Li ◽  
Shifeng Zhou ◽  
Yuewei Zhang ◽  
Guangqin Chen ◽  
Zhanglian Hong

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