Fabrication of Ag/carbon nitride photocatalysts and their enhanced photocatalytic performance for tetracycline degradation

2020 ◽  
Vol 13 (06) ◽  
pp. 2051033
Author(s):  
Peng Zhang ◽  
Jiquan Wang ◽  
Jie Gong ◽  
Kai Wang ◽  
Yuan Li ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Solid Phase ◽  
Close Contact ◽  
Dominant Role ◽  
Localized Surface Plasmon ◽  
Radical Trapping ◽  
Tetracycline Degradation ◽  
Calcination Method ◽  
Carbon Nitride Nanosheets

In this study, we synthesized graphic carbon nitride nanosheets (labeled as CNs) by solid-phase grinding strategy coupled calcination method and then prepared Ag nanoparticles (NPs) loaded CNs composites by photodeposition. The as-prepared Ag/CNs composites presented remarkably enhanced photocatalytic performance and the degradation rate of tetracycline (TC) by Ag/CNs (3[Formula: see text]wt.%) composite is above two times higher than that by pristine CNs under visible light irradiation. The enhanced photocatalytic activity originated from the close contact between Ag and CNs, and the localized surface plasmon resonance (LSPR) effect of Ag. Moreover, the results of radical trapping experiments illustrated that [Formula: see text] plays a dominant role in photocatalytic degradation of TC. This work provides a new way for design novel noble metal modified graphic CN photocatalysts.

Electrodeposition of carbon nitride nanosheets on the graphenized pencil lead as an effective sorbent

2018 ◽  
Vol 42 (19) ◽  
pp. 15930-15936 ◽  
Author(s):  
Elnaz Marzi Khosrowshahi ◽  
Habib Razmi
Keyword(s):  
Solid Phase Microextraction ◽  
Carbon Nitride ◽  
Solid Phase ◽  
Analytical Monitoring ◽  
Monitoring Applications ◽  
Pencil Lead ◽  
Carbon Nitride Nanosheets ◽  
Effective Sorbent

This study introduces a green, cheap, easy to prepare and powerful solid phase microextraction (SPME) sorbent for analytical monitoring applications.

scholarly journals Photocatalytic Degradation and Antibacterial Properties of Fe3+-Doped Alkalized Carbon Nitride

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1751 ◽  
Author(s):  
Ying Gao ◽  
Jizhou Duan ◽  
Xiaofan Zhai ◽  
Fang Guan ◽  
Xiutong Wang ◽  
...  
Keyword(s):  
Fenton Reaction ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Antibacterial Properties ◽  
Absorption Characteristic ◽  
Visible Absorption ◽  
E Coli ◽  
Radical Trapping ◽  
Photocatalytic System ◽  
Excellent Stability

Discovering novel materials and improving the properties of existing materials are the main goals in the field of photocatalysis to increase the potential application of the materials. In this paper, a modified graphitic carbon nitride (g-C3N4) photocatalyst named Fe3+-doped alkalized carbon nitride, which couples the photocatalytic reaction with the Fenton reaction, is introduced to demonstrate its Rhodamine B (RhB) degradation and antibacterial properties. Under visible-light irradiation, the degradation rate of RhB was 99.9% after 200 min, while the antibacterial rates of Pseudomonas aeruginosa (P. aeruginosa), Escherichia coli (E. coli), and Staphylococcus aureus (S. aureus) after 300 min were 99.9986%, 99.9974%, and 99.9876%, respectively. Moreover, the repetitive experiments of RhB degradation demonstrate that the proposed photocatalysts have excellent stability and reusability. The active free radical trapping experiments reveal that the superoxide radical (·O2−) is the dominant reactive oxygen species. In addition, the Fenton reaction is introduced into the photocatalytic system due to the doping of Fe3+, and the hydroxyl radical (·OH) produced from the Fenton reaction further enhances the photocatalytic performance. The remarkable improvement in photocatalytic performance of the proposed photocatalyst can be attributed to its broader UV–visible absorption characteristic and the occurrence of the Fenton reaction.

scholarly journals Carbon Self-Doped Carbon Nitride Nanosheets with Enhanced Visible-Light Photocatalytic Hydrogen Production

Catalysts ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 366 ◽  
Author(s):  
Hongwei Wang ◽  
Guiqing Huang ◽  
Zhiwei Chen ◽  
Weibing Li
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Transfer Rate ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Photocatalytic Hydrogen Production ◽  
Feasible Method ◽  
Carrier Transfer ◽  
Carbon Nitride Nanosheets ◽  
Visible Light Photocatalytic

In this study, we prepared carbon self-doped carbon nitride nanosheets through a glucose synergic co-condensation method. In the carbon self-doped structure, the N atoms in the triazine rings were substituted by C atoms, resulting in enhanced visible-light photocatalytic hydrogen production, which is three-times higher than that of bulk carbon nitride. The enhanced photocatalytic hydrogen production was attributed to the higher charge-carrier transfer rate and widened light absorption range of the carbon nitride nanosheets after carbon self-doping. Thus, this work highlights the importance of carbon self-doping for improving the photocatalytic performance. Meanwhile, it provides a feasible method for the preparation of carbon self-doped carbon nitride without destroying the 2D conjugated backbone structures.

Bismuthiol‐Mediated Synthesis of Ordered Carbon Nitride Nanosheets with Enhanced Photocatalytic Performance

Solar RRL ◽  
2020 ◽  
Vol 4 (8) ◽  
pp. 2000017 ◽  
Author(s):  
Neeta Karjule ◽  
Jesús Barrio ◽  
Ayelet Tashakory ◽  
Menny Shalom
Keyword(s):  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Carbon Nitride Nanosheets

Green synthesis of ultrathin edge-activated foam-like carbon nitride nanosheets for enhanced photocatalytic performance under visible light irradiation

2019 ◽  
Vol 3 (7) ◽  
pp. 1764-1775 ◽  
Author(s):  
Islam A. Abdelhafeez ◽  
Qiufang Yao ◽  
Cixuan Wang ◽  
Yiming Su ◽  
Xuefei Zhou ◽  
...  
Keyword(s):  
Visible Light ◽  
Green Synthesis ◽  
Visible Light Irradiation ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Carbon Nitride Nanosheets ◽  
Polymeric Carbon

Fabrication of few-layered polymeric carbon nitride (PCN) photocatalysts have attracted increasing attention owing to their substantial enhancement of the photocatalytic performance.

A hybrid transition metal nanocrystal-embedded graphitic carbon nitride nanosheet system as a superior oxygen electrocatalyst for rechargeable Zn–air batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (38) ◽  
pp. 19644-19654
Author(s):  
Wen-Jun Niu ◽  
Jin-Zhong He ◽  
Ya-Ping Wang ◽  
Qiao-Qiao Sun ◽  
Wen-Wu Liu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Carbon Nitride ◽  
Solid Phase ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Highly Efficient ◽  
Pyrolysis Method ◽  
Carbon Nitride Nanosheets

A general solid-phase pyrolysis method was developed to synthesize the hybrid transition metals nanocrystals-embedded graphitic carbon nitride nanosheets (M-CNNs) as highly efficient oxygen electrocatalyst for rechargeable Zn–air batteries (ZABs).

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