One-Pot Ionothermal Synthesized Carbon Nitride Heterojunction Nanorods for Simultaneous Photocatalytic Reduction and Oxidation Reactions: Synergistic Effect and Mechanism Insight

2019 ◽  
Vol 7 (5) ◽  
pp. 5122-5133 ◽  
Author(s):  
Ailing Jin ◽  
Xin Liu ◽  
Mengru Li ◽  
Yushuai Jia ◽  
Changfeng Chen ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Carbon Nitride ◽  
Photocatalytic Reduction ◽  
Oxidation Reactions ◽  
One Pot ◽  
Reduction And Oxidation

A one-pot consecutive photocatalytic reduction and oxidation system for complete debromination of tetrabromodiphenyl ether

2018 ◽  
Vol 345 ◽  
pp. 586-593 ◽  
Author(s):  
Ming Lei ◽  
Nan Wang ◽  
Shun Guo ◽  
Lihua Zhu ◽  
Yaobin Ding ◽  
...  
Keyword(s):  
Photocatalytic Reduction ◽  
One Pot ◽  
Reduction And Oxidation ◽  
Oxidation System

scholarly journals Facile one-pot synthesis of Mg-doped g-C3N4 for photocatalytic reduction of CO2

RSC Advances ◽  
2019 ◽  
Vol 9 (49) ◽  
pp. 28894-28901 ◽  
Author(s):  
Xinyue Dong ◽  
Suicai Zhang ◽  
Hualin Wu ◽  
Zhuo Kang ◽  
Li Wang
Keyword(s):  
Carbon Nitride ◽  
Environmental Issues ◽  
Graphitic Carbon ◽  
Photocatalytic Reduction ◽  
Graphitic Carbon Nitride ◽  
One Pot ◽  
One Pot Synthesis ◽  
Reduction Of Co2 ◽  
Mg Doped

Graphitic carbon nitride (g-C3N4) has attracted wide attention due to its potential in solving energy and environmental issues.

scholarly journals Evaluating the Catalytic Effects of Carbon Materials on the Photocatalytic Reduction and Oxidation Reactions of TiO2

2013 ◽  
Vol 34 (4) ◽  
pp. 1137-1144 ◽  
Author(s):  
Gulzar Khan ◽  
Young Kwang Kim ◽  
Sung Kyu Choi ◽  
Dong Suk Han ◽  
Ahmed Abdel-Wahab ◽  
...  
Keyword(s):  
Carbon Materials ◽  
Photocatalytic Reduction ◽  
Oxidation Reactions ◽  
Reduction And Oxidation ◽  
Catalytic Effects

One-pot Synthesis of Pyrazolone Sulfones by Iodine-catalyzed Sulfenylation of Pyrazolones with Aryl Sulfonyl Hydrazides Followed by Oxidation in Water

2018 ◽  
Vol 15 (3) ◽  
pp. 380-387
Author(s):  
Xia Zhao ◽  
Xiaoyu Lu ◽  
Lipeng Zhang ◽  
Tianjiao Li ◽  
Kui Lu
Keyword(s):  
Double Bond ◽  
Efficient Method ◽  
Room Temperature ◽  
Sulfonyl Chloride ◽  
Antibacterial Activities ◽  
Oxidation Reactions ◽  
Reaction Conditions ◽  
One Pot ◽  
X Ray ◽  
Amide Form

Aim and Objective: Pyrazolone sulfones have been reported to exhibit herbicidal and antibacterial activities. In spite of their good bioactivities, only a few methods have been developed to prepare pyrazolone sulfones. However, the substrate scope of these methods is limited. Moreover, the direct sulfonylation of pyrazolone by aryl sulfonyl chloride failed to give pyrazolone sulfones. Thus, developing a more efficient method to synthesize pyrazolone sulfones is very important. Materials and Method: Pyrazolone, aryl sulphonyl hydrazide, iodine, p-toluenesulphonic acid and water were mixed in a sealed tube, which was heated to 100°C for 12 hours. The mixture was cooled to 0°C and m-CPBA was added in batches. The mixture was allowed to stir for 30 min at room temperature. The crude product was purified by silica gel column chromatography to afford sulfuryl pyrazolone. Results: In all cases, the sulfenylation products were formed smoothly under the optimized reaction conditions, and were then oxidized to the corresponding sulfones in good yields by 3-chloroperoxybenzoic acid (m-CPBA) in water. Single crystal X-ray analysis of pyrazolone sulfone 4aa showed that the major tautomer of pyrazolone sulfones was the amide form instead of the enol form observed for pyrazolone thioethers. Moreover, the C=N double bond isomerized to form an α,β-unsaturated C=C double bond. Conclusion: An efficient method to synthesize pyrazolone thioethers by iodine-catalyzed sulfenylation of pyrazolones with aryl sulfonyl hydrazides in water was developed. Moreover, this method was employed to synthesize pyrazolone sulfones in one-pot by subsequent sulfenylation and oxidation reactions.

Cobalt ion redox and conductive polymers boosted the photocatalytic activity of the graphite carbon nitride–Co3O4 Z-scheme heterostructure

2021 ◽  
Vol 45 (1) ◽  
pp. 162-168
Author(s):  
Tao Li ◽  
Jiandong Cui ◽  
Yezhan Lin ◽  
Kecheng Liu ◽  
Rui Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Synergistic Effect ◽  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Conductive Polymers ◽  
Cobalt Ion ◽  
Photocatalytic Hydrogen Evolution ◽  
Conductive Polyaniline

The enhanced photocatalytic hydrogen evolution performance of g-C3N4–Co3O4 2D–1D Z-scheme heterojunctions was achieved through the synergistic effect of the cobalt ion redox, conductive polyaniline, and a Co3O4 nanobelt.

Synergistic effect of phosphomolybdic acid on rhodium-based metal-organic frameworks for the efficient selective photocatalytic reduction of CO2 to CO

2021 ◽  
Author(s):  
Yurong Shan ◽  
Dexiang Liu ◽  
Chunyan Xu ◽  
Peng Zhan ◽  
Hui Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Electronic Structure ◽  
Synergistic Effect ◽  
Metal Organic Frameworks ◽  
Phosphomolybdic Acid ◽  
Photocatalytic Reduction ◽  
Structure And Morphology ◽  
Spherical Structure ◽  
Metal Organic ◽  
Reduction Of Co2

In this work, PMA@NH2-MIL-68(Rh) with a mangosteen spherical structure was successfully synthesized by a hydrothermal method for the photocatalytic reduction of carbon dioxide. The electronic structure and morphology of the...

scholarly journals Carbon Nitride Quantum Dots Modified TiO2 Inverse Opal Photonic Crystal for Solving Indoor VOCs Pollution

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 464
Author(s):  
Jie Yu ◽  
Angel Caravaca ◽  
Chantal Guillard ◽  
Philippe Vernoux ◽  
Liang Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Nitride ◽  
Sol Gel ◽  
Green Energy ◽  
Inverse Opal ◽  
Oxidation Reactions ◽  
Composite Photocatalyst ◽  
Colloidal Photonic Crystals ◽  
Inverse Opal Structure

Indoor toxic volatile organic compounds (VOCs) pollution is a serious threat to people’s health and toluene is a typical representative. In this study, we developed a composite photocatalyst of carbon nitride quantum dots (CNQDs) in situ-doped TiO2 inverse opal TiO2 IO for efficient degradation of toluene. The catalyst was fabricated using a sol-gel method with colloidal photonic crystals as the template. The as-prepared catalyst exhibited excellent photocatalytic performance for degradation of toluene. After 6 h of simulated sunlight irradiation, 93% of toluene can be converted into non-toxic products CO2 and H2O, while only 37% of toluene is degraded over commercial P25 in the same condition. This greatly enhanced photocatalytic activity results from two aspects: (i) the inverse opal structure enhances the light harvesting while providing adequate surface area for effective oxidation reactions; (ii) the incorporation of CNQDs in the framework of TiO2 increases visible light absorption and promotes the separation of photo-generated charges. Collectively, highly efficient photocatalytic degradation of toluene has been achieved. In addition, it can be expanded to efficient degradation of organic pollutants in liquid phase such as phenol and Rhodamine B. This study provides a green, energy saving solution for indoor toxic VOCs removal as well as for the treatment of organic wastewater.

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