Highly active tantalum(v) nitride nanoparticles prepared from a mesoporous carbon nitride template for photocatalytic hydrogen evolution under visible light irradiation

2010 ◽  
Vol 20 (21) ◽  
pp. 4295 ◽  
Author(s):  
Leny Yuliati ◽  
Jae-Hun Yang ◽  
Xinchen Wang ◽  
Kazuhiko Maeda ◽  
Tsuyoshi Takata ◽  
...  



2018 ◽  
Vol 53 ◽  
pp. 76-85 ◽  
Author(s):  
Hai Bing Che ◽  
Xiao Xiao Yan ◽  
Zhi Yuan Jia ◽  
Peng Hu ◽  
Jin Shu Wang

In this work, a novel and facile sequential cation-exchanging strategy was developed to synthesize phosphorus doped g-C3N4 nanotubes, and resulted nanotubes were composed of small nanorods with length of several hundred nanometers by oriented aggregation. As obtained products exhibit greatly enhanced photocatalytic hydrogen evolution with rate of 4.59 mmol h-1 g-1, which is 16 times higher than that of the bulk g-C3N4 under visible light irradiation. Mechanism investigation reveals that the superior photocatalytic property could be attributed to its improved visible light absorbance, well suppressed charges recombination and nanostructural construction.





2014 ◽  
Vol 925 ◽  
pp. 130-134 ◽  
Author(s):  
Shu Chin Lee ◽  
Hendrik O. Lintang ◽  
Salasiah Endud ◽  
Leny Yuliati

In this work, we reported the photocatalytic activities of carbon nitride (CN) materials for removal of various aromatic organic pollutants under visible light irradiation. Both bulk carbon nitride (BCN) and mesoporous carbon nitride (MCN) were prepared similarly through thermal polymerization of urea precursor, except that the mesoporous structure was generated onto the MCN via hard template approach using silica nanoparticles. Successful preparations of both BCN and MCN were suggested from various characterization techniques using XRD, DR UV-Visible spectroscopy, nitrogen adsorption-desorption analyzer, and TEM. The prepared BCN and MCN were tested for removal of aromatic organic pollutants, which were benzene, phenol and salicylic acid under visible light irradiation. Both BCN and MCN did not exhibit any photocatalytic activities in the removal of benzene, but active for removals of phenol and salicylic acid. The structure stability and the presence of electron donating group on the organic pollutants were proposed to affect the photocatalytic removal reactions. Owing to the larger BET specific surface area, MCN showed much higher photocatalytic activity than the BCN for removal of phenol and salicylic acid.



2019 ◽  
Vol 9 (9) ◽  
pp. 2196-2202 ◽  
Author(s):  
Miza Kombo ◽  
Liu-Bo Ma ◽  
Ya-Nan Liu ◽  
Xiao-Xiang Fang ◽  
Naseeb Ullah ◽  
...  

CoTPP inhibits the recombination of electron-hole pairs through extracting holes from g-C3N4 thus dramatically enhancing photocatalytic hydrogen production under visible light irradiation.



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