scholarly journals Catalytic activity of porous carbon nitride regulated by polyoxometalates under visible light

RSC Advances ◽  
2020 ◽  
Vol 10 (14) ◽  
pp. 8255-8260 ◽  
Author(s):  
Shuge Tang ◽  
Zhuang Liu ◽  
Fengpan Ma ◽  
Guilong Cao ◽  
Jingkuan Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Visible Light ◽  
Porous Carbon ◽  
Carbon Nitride ◽  
Composite Catalyst ◽  
Mass Ratio ◽  
Porous Composite

A porous composite catalyst is prepared by modifying mpg-C3N4 with polyacids through ultrasound. When the mass ratio of SiW12 to mpg-C3N4 was 1 : 5, the degradation of phenol showed the best catalytic activity, which was 3.5 times that of mpg-C3N4.

scholarly journals Visible-Light Flow Reactor Packed with Porous Carbon Nitride for Aerobic Substrate Oxidations

2020 ◽  
Vol 12 (7) ◽  
pp. 8176-8182 ◽  
Author(s):  
Mark A. Bajada ◽  
Arjun Vijeta ◽  
Aleksandr Savateev ◽  
Guigang Zhang ◽  
Duncan Howe ◽  
...  
Keyword(s):  
Visible Light ◽  
Porous Carbon ◽  
Carbon Nitride ◽  
Flow Reactor

AgBr-loaded hollow porous carbon nitride with ultrahigh activity as visible light photocatalysts for water remediation

2018 ◽  
Vol 229 ◽  
pp. 155-162 ◽  
Author(s):  
Xuewen Li ◽  
Dongyun Chen ◽  
Najun Li ◽  
Qingfeng Xu ◽  
Hua Li ◽  
...  
Keyword(s):  
Visible Light ◽  
Porous Carbon ◽  
Carbon Nitride ◽  
Water Remediation

scholarly journals A 3D Hierarchical Pancake-Like Porous Carbon Nitride for Highly Enhanced Visible-Light Photocatalytic H2 Evolution

Catalysts ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 77
Author(s):  
Xiaobin Qiu ◽  
Lingfang Qiu ◽  
Mengfan Ma ◽  
Yingying Hou ◽  
Shuwang Duo
Keyword(s):  
Visible Light ◽  
Porous Carbon ◽  
Carbon Nitride ◽  
Light Harvesting ◽  
Quantum Yields ◽  
Light Illumination ◽  
H2 Evolution ◽  
Photoelectric Properties ◽  
Polymeric Carbon ◽  
Photocatalytic H2 Evolution

Polymeric carbon nitride is a fascinating visible-light-response metal-free semiconductor photocatalyst in recent decades. Nevertheless, the photocatalytic H2 efficiency is unsatisfactory due to the insufficient visible-light harvesting capacity and low quantum yields caused by the bulky structure seriously limited its applications. To overcome these defects, in this research, a 3D hierarchical pancake-like porous carbon nitride (PPCN) was successfully fabricated by a facile bottom-up method. The as-prepared photocatalyst exhibit enlarged surface area, enriched reactive sites, improved charge carrier transformation and separation efficiency, and expanded bandgap with a more negative conduction band towardan enhanced reduction ability. All these features synergistically enhanced the photocatalytic H2 evolution efficiency of 3% Pt@PPCN (430 µmol g−1 h−1) under the visible light illumination (λ ≥ 420 nm), which was nine-fold higher than that of 3% Pt@bulk C3N4 (BCN) (45 µmol g−1 h−1). The improved structure and enhanced photoelectric properties were systematically investigated by different characterization techniques. This research may provide an insightful synthesis strategy for polymeric carbon nitride with excellent light-harvesting capacity and enhanced separation of charges toward remarkable photocatalytic H2 for water splitting.

Hollow porous carbon nitride immobilized on carbonized nanofibers for highly efficient visible light photocatalytic removal of NO

Nanoscale ◽  
2016 ◽  
Vol 8 (23) ◽  
pp. 12066-12072 ◽  
Author(s):  
Hongxin Wu ◽  
Dongyun Chen ◽  
Najun Li ◽  
Qingfeng Xu ◽  
Hua Li ◽  
...  
Keyword(s):  
Visible Light ◽  
Porous Carbon ◽  
Carbon Nitride ◽  
Highly Efficient ◽  
Photocatalytic Removal ◽  
Visible Light Photocatalytic

Large Scale Synthesis of Porous Carbon-Nitride Microsphere for Visible Light Harvesting

2016 ◽  
Vol 878 ◽  
pp. 64-69
Author(s):  
Ji Liu ◽  
Guo Zhuo Gong ◽  
Jie Jin Ding ◽  
Peng Zhang ◽  
Hai Tao Sheng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Visible Light ◽  
Vapor Deposition ◽  
Porous Carbon ◽  
Large Scale ◽  
Carbon Nitride ◽  
Chemical Vapor ◽  
Microscope Images ◽  
Visible Light Degradation ◽  
Visible Light Photocatalytic

Porous carbon nitride microsphere with dimaters ranging from 2 to 6 micrometers were synthesized via chemical vapor deposition in this work. Electron microscope images of the composite show that they have multiwalled innerstructure, which was built by disorderly stacked g-C3N4 curved layers assembled from nitrogen bridges of pyramidal structure, making them porous surfaced. Their mechanical and optical properties were studied with nanoindenter and UV-VIS spectra. It shows that they have good mechanical properties and, compared to carbon nitride synthesized by solvent method, out carbon nitride composite showed relativly broader light absorption band between 400 nm and 600 nm. Also, its visible light degradation of methyl blue was studied, showing its potential as visible light photocatalytic for water purification.

Sign in / Sign up

Export Citation Format

Share Document