C-, N-Vacancy defect engineered polymeric carbon nitride towards photocatalysis: viewpoints and challenges

2021 ◽  
Vol 9 (1) ◽  
pp. 111-153
Author(s):  
Abhinandan Kumar ◽  
Pankaj Raizada ◽  
Ahmad Hosseini-Bandegharaei ◽  
Vijay Kumar Thakur ◽  
Van-Huy Nguyen ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Structural Features ◽  
Vacancy Defect ◽  
Semiconductor Material ◽  
Metal Free ◽  
Polymeric Semiconductor ◽  
Polymeric Carbon

As an alluring metal-free polymeric semiconductor material, graphite-like carbon nitride (g-C3N4; abbreviated as GCN) has triggered a new impetus in the field of photocatalysis, mainly favoured from its fascinating physicochemical and photoelectronic structural features.

Bi-doped Graphitic Carbon Nitride Nanotubes Boosts the Degradation Photocatalysis of Rhodamine B

2022 ◽  
Author(s):  
Qingqing Gao ◽  
Qian Lei ◽  
Ruoyan Miao ◽  
Manyi Gao ◽  
Fang Song ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Rhodamine B ◽  
High Stability ◽  
Carbon Nitride ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Efficiency ◽  
Metal Free ◽  
Carrier Recombination ◽  
Charge Carrier Recombination ◽  
Polymeric Carbon

Polymeric carbon nitride (PCN) is an emerging metal-free photocatalysts with high stability but is plagued by low photocatalytic efficiency due to the rapid charge carrier recombination behavior. Herein, Bi doped...

Photocarving nitrogen vacancies in a polymeric carbon nitride for metal-free oxygen synthesis

2019 ◽  
Vol 256 ◽  
pp. 117794 ◽  
Author(s):  
Pengju Yang ◽  
Long Wang ◽  
Hangyu Zhuzhang ◽  
Ruirui Wang ◽  
Maria-Magdalena Titirici ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Free Oxygen ◽  
Metal Free ◽  
Polymeric Carbon ◽  
Nitrogen Vacancies

Enhanced photocatalytic hydrogen production from aqueous-phase methanol reforming over cyano-carboxylic bifunctionally-modified carbon nitride

2019 ◽  
Vol 55 (83) ◽  
pp. 12503-12506 ◽  
Author(s):  
Hao Tan ◽  
Peng Kong ◽  
Meixian Liu ◽  
Xianmo Gu ◽  
Zhanfeng Zheng
Keyword(s):  
Hydrogen Production ◽  
Active Sites ◽  
Carbon Nitride ◽  
Separation Efficiency ◽  
Promising Candidate ◽  
Methanol Reforming ◽  
Metal Free ◽  
Carrier Separation ◽  
Polymeric Carbon ◽  
Low Activity

Polymeric carbon nitride is a promising candidate for metal-free photocatalysis, but it is hampered by low activity due to poor carrier separation efficiency and lack of active sites.

Polymeric carbon nitride nanomesh as an efficient and durable metal-free catalyst for oxidative desulfurization

2018 ◽  
Vol 54 (20) ◽  
pp. 2475-2478 ◽  
Author(s):  
Lijuan Shen ◽  
Ganchang Lei ◽  
Yuanxing Fang ◽  
Yanning Cao ◽  
Xinchen Wang ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Carbon Nitride ◽  
Oxidative Desulfurization ◽  
Metal Free ◽  
Polymeric Carbon

Polymeric carbon nitride nanomesh has been prepared and demonstrated to be a novel and outstanding catalyst for H2S selective oxidation.

scholarly journals Solar hydrogen evolution using metal-free photocatalytic polymeric carbon nitride/CuInS2 composites as photocathodes

2013 ◽  
Author(s):  
Florent Yang ◽  
Vadym Kuznietsov ◽  
Michael Lublow ◽  
Christoph Merschjann ◽  
Alexander Steigert ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Solar Hydrogen ◽  
Metal Free ◽  
Polymeric Carbon

scholarly journals Mechanistic analysis of multiple processes controlling solar-driven H2O2 synthesis using engineered polymeric carbon nitride

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yubao Zhao ◽  
Peng Zhang ◽  
Zhenchun Yang ◽  
Lina Li ◽  
Jingyu Gao ◽  
...  
Keyword(s):  
Active Sites ◽  
Carbon Nitride ◽  
Separation Efficiency ◽  
Structural Features ◽  
Reduction Reaction ◽  
Transformation Process ◽  
Photon Absorption ◽  
Apparent Quantum Yield ◽  
Dioxygen Reduction ◽  
Polymeric Carbon

AbstractSolar-driven hydrogen peroxide (H2O2) production presents unique merits of sustainability and environmental friendliness. Herein, efficient solar-driven H2O2 production through dioxygen reduction is achieved by employing polymeric carbon nitride framework with sodium cyanaminate moiety, affording a H2O2 production rate of 18.7 μmol h −1 mg−1 and an apparent quantum yield of 27.6% at 380 nm. The overall photocatalytic transformation process is systematically analyzed, and some previously unknown structural features and interactions are substantiated via experimental and theoretical methods. The structural features of cyanamino group and pyridinic nitrogen-coordinated soidum in the framework promote photon absorption, alter the energy landscape of the framework and improve charge separation efficiency, enhance surface adsorption of dioxygen, and create selective 2e− oxygen reduction reaction surface-active sites. Particularly, an electronic coupling interaction between O2 and surface, which boosts the population and prolongs the lifetime of the active shallow-trapped electrons, is experimentally substantiated.

Defect Engineering Metal-Free Polymeric Carbon Nitride Electrocatalyst for Effective Nitrogen Fixation under Ambient Conditions

2018 ◽  
Vol 57 (32) ◽  
pp. 10246-10250 ◽  
Author(s):  
Chade Lv ◽  
Yumin Qian ◽  
Chunshuang Yan ◽  
Yu Ding ◽  
Yuanyue Liu ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Carbon Nitride ◽  
Ambient Conditions ◽  
Defect Engineering ◽  
Metal Free ◽  
Polymeric Carbon

scholarly journals FeP modified polymeric carbon nitride as a noble-metal-free photocatalyst for efficient CO2 reduction

2021 ◽  
pp. 106326
Author(s):  
Yangkun Guo ◽  
Qiang Wang ◽  
Min Wang ◽  
Meng Shen ◽  
Lingxia Zhang ◽  
...  
Keyword(s):  
Noble Metal ◽  
Carbon Nitride ◽  
Co2 Reduction ◽  
Metal Free ◽  
Polymeric Carbon

Defect Engineering Metal-Free Polymeric Carbon Nitride Electrocatalyst for Effective Nitrogen Fixation under Ambient Conditions

2018 ◽  
Vol 130 (32) ◽  
pp. 10403-10407 ◽  
Author(s):  
Chade Lv ◽  
Yumin Qian ◽  
Chunshuang Yan ◽  
Yu Ding ◽  
Yuanyue Liu ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Carbon Nitride ◽  
Ambient Conditions ◽  
Defect Engineering ◽  
Metal Free ◽  
Polymeric Carbon
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