Unraveling the Dual Defect Sites in Graphite Carbon Nitride for Ultra-high Photocatalytic H2O2 Evolution

2022 ◽  
Author(s):  
Xu Zhang ◽  
Peijie Ma ◽  
Cong WANG ◽  
Li-Yong Gan ◽  
Xianjie Chen ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Carbon Nitride ◽  
Defect Engineering ◽  
Defect Sites ◽  
Multiple Defect

Defect engineering modified graphite carbon nitride (g-C3N4) has been widely used in various photocatalytic systems due to the enhanced catalytic activity by multiple defect sites (such as vacancies or functional...

scholarly journals Linking Bi-Metal Distribution Patterns in Porous Carbon Nitride Fullerene to Its Catalytic Activity toward Gas Adsorption

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1794
Author(s):  
Parisa Nematollahi ◽  
Erik C. Neyts
Keyword(s):  
Catalytic Activity ◽  
Carbon Nitride ◽  
Gas Adsorption ◽  
Distribution Patterns ◽  
Catalyst Design ◽  
Metal Distribution ◽  
Binary Complex ◽  
Metal Atoms ◽  
Metal Composition ◽  
Single Transition

Immobilization of two single transition metal (TM) atoms on a substrate host opens numerous possibilities for catalyst design. If the substrate contains more than one vacancy site, the combination of TMs along with their distribution patterns becomes a design parameter potentially complementary to the substrate itself and the bi-metal composition. By means of DFT calculations, we modeled three dissimilar bi-metal atoms (Ti, Mn, and Cu) doped into the six porphyrin-like cavities of porous C24N24 fullerene, considering different bi-metal distribution patterns for each binary complex, viz. TixCuz@C24N24, TixMny@C24N24, and MnyCuz@C24N24 (with x, y, z = 0–6). We elucidate whether controlling the distribution of bi-metal atoms into the C24N24 cavities can alter their catalytic activity toward CO2, NO2, H2, and N2 gas capture. Interestingly, Ti2Mn4@C24N24 and Ti2Cu4@C24N24 complexes showed the highest activity and selectively toward gas capture. Our findings provide useful information for further design of novel few-atom carbon-nitride-based catalysts.

Construction of an all-solid-state Z-scheme photocatalyst based on graphite carbon nitride and its enhancement to catalytic activity

2018 ◽  
Vol 5 (3) ◽  
pp. 599-615 ◽  
Author(s):  
Longbo Jiang ◽  
Xingzhong Yuan ◽  
Guangming Zeng ◽  
Jie Liang ◽  
Zhibin Wu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solid State ◽  
Carbon Nitride ◽  
Natural Photosynthesis

This review highlights an artificial g-C3N4-based Z-scheme photocatalyst that simulates natural photosynthesis; the design, preparation and applications are presented.

Ultrathin molybdenum disulfide/carbon nitride nanosheets with abundant active sites for enhanced hydrogen evolution

Nanoscale ◽  
2018 ◽  
Vol 10 (4) ◽  
pp. 1766-1773 ◽  
Author(s):  
Xingyue Qian ◽  
Junfei Ding ◽  
Jianli Zhang ◽  
Yue Zhang ◽  
Yining Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Molybdenum Disulfide ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Carbon Nitride ◽  
Carbon Nitride Nanosheets

The molybdenum disulfide/carbon nitride (MoS2/C3N4-3) nanosheets with ultrathin thickness present superior catalytic activity for hydrogen evolution reaction for water splitting.

Cycloaddition of CO2 and epoxide catalyzed by amino- and hydroxyl-rich graphitic carbon nitride

2016 ◽  
Vol 6 (9) ◽  
pp. 2942-2948 ◽  
Author(s):  
Zhijun Huang ◽  
Fengbo Li ◽  
Bingfeng Chen ◽  
Guoqing Yuan
Keyword(s):  
Catalytic Activity ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride

g-C3N4 activated by protonation using H2SO4 demonstrates a remarkably enhanced catalytic activity for cycloaddition of CO2 and epoxide.

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