A facile approach to constructing Pd@PCN–Se nano-composite catalysts for selective alcohol oxidation reactions

2019 ◽  
Vol 7 (18) ◽  
pp. 10918-10923 ◽  
Author(s):  
Kuanhong Cao ◽  
Xin Deng ◽  
Tian Chen ◽  
Qitao Zhang ◽  
Lei Yu
Keyword(s):  
Surface Area ◽  
Oxidation Reaction ◽  
Carbon Nitride ◽  
Alcohol Oxidation ◽  
Pd Nanoparticles ◽  
Oxidation Reactions ◽  
Structure Directing Agent ◽  
Nano Composite ◽  
Composite Catalysts ◽  
Polymeric Carbon

By using Se as structure-directing agent, the surface area and total mesoporous volume of polymeric carbon nitride (PCN) could be obviously enhanced. The PCN-Se material was a better support for Pd nanoparticles, which could catalyze the alcohol oxidation reaction with broad substrate scope.

scholarly journals Versatile Synthesis of Pd and Cu Co-Doped Porous Carbon Nitride Nanowires for Catalytic CO Oxidation Reaction

Catalysts ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 411 ◽  
Author(s):  
Kamel Eid ◽  
Yahia Ahmad ◽  
Assem Mohamed ◽  
Anas Elsafy ◽  
Siham Al-Qaradawi
Keyword(s):  
Co Oxidation ◽  
Environmental Remediation ◽  
Oxidation Reaction ◽  
Noble Metals ◽  
Carbon Nitride ◽  
High Surface ◽  
Oxidation Reactions ◽  
Efficient Catalyst ◽  
Oxidation Activity ◽  
Co Oxidation Reaction

Developing efficient catalyst for CO oxidation at low-temperature is crucial in various industrial and environmental remediation applications. Herein, we present a versatile approach for controlled synthesis of carbon nitride nanowires (CN NWs) doped with palladium and copper (Pd/Cu/CN NWs) for CO oxidation reactions. This is based on the polymerization of melamine by nitric acid in the presence of metal-precursors followed by annealing under nitrogen. This intriguingly drove the formation of well-defined, one-dimensional nanowires architecture with a high surface area (120 m2 g−1) and doped atomically with Pd and Cu. The newly-designed Pd/Cu/CN NWs fully converted CO to CO2 at 149 °C, that was substantially more active than that of Pd/CN NWs (283 °C) and Cu/CN NWs (329 °C). Moreover, Pd/Cu/CN NWs fully reserved their initial CO oxidation activity after 20 h. This is mainly attributed to the combination between the unique catalytic properties of Pd/Cu and outstanding physicochemical properties of CN NWs, which tune the adsorption energies of CO reactant and reaction product during the CO oxidation reaction. The as-developed method may open new frontiers on using CN NWs supported various noble metals for CO oxidation reaction.

Polyhedral oligomeric silsesquioxane as a recyclable soft template to synthesize mesoporous polymeric carbon nitride with enhanced photocatalytic hydrogen evolution

2021 ◽  
Vol 5 (1) ◽  
pp. 112-116
Author(s):  
Zhiwei Liang ◽  
Lei Liu ◽  
Xiaojia Zhuang ◽  
Zicheng Tang ◽  
Haiping Li ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Hydrogen Evolution ◽  
Specific Surface Area ◽  
Carbon Nitride ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Soft Template ◽  
Photocatalytic Hydrogen Evolution ◽  
Oligomeric Silsesquioxane ◽  
Polymeric Carbon

A novel recyclable template was used to prepare mesoporous polymeric carbon nitride with prominently increased specific surface area and photoactivity.

Etching-induced highly porous polymeric carbon nitride with enhanced photocatalytic hydrogen evolution

2021 ◽  
Author(s):  
Xiang Wang ◽  
Yuguo Xia ◽  
Haimei Wang ◽  
Xiuling Jiao ◽  
Dairong Chen
Keyword(s):  
Specific Surface ◽  
Surface Charge ◽  
Surface Area ◽  
Charge Separation ◽  
Active Sites ◽  
Carbon Nitride ◽  
Separation Process ◽  
Large Specific Surface Area ◽  
Polymeric Carbon ◽  
Highly Porous

Photocatalytic catalysts with a large specific surface area generally can not only supply more active sites but also facilitate the surface charge separation process. Here, we present a facile strategy...

Unusual synergetic effect of nickel single atoms on the electrocatalytic activity of palladium for alcohol oxidation reactions in alkaline media

2018 ◽  
Vol 54 (87) ◽  
pp. 12404-12407 ◽  
Author(s):  
Thantakorn Nitaya ◽  
Yi Cheng ◽  
Shanfu Lu ◽  
Kunakorn Poochinda ◽  
Kejvalee Pruksathorn ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrocatalytic Activity ◽  
Synergetic Effect ◽  
Alcohol Oxidation ◽  
Pd Nanoparticles ◽  
Alkaline Media ◽  
Oxidation Reactions ◽  
Single Atoms ◽  
Oxidation Of Alcohols

Ni single atoms encapsulated in carbon nanotubes substantially enhance the activity of Pd nanoparticles for oxidation of alcohols in alkaline media.

Dissolution and Performing Homogeneous Photocatalysis of Polymeric Carbon Nitride

2018 ◽  
Author(s):  
Chaofeng Huang ◽  
Jing Wen ◽  
Yanfei Shen ◽  
Fei He ◽  
Li Mi ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Carbon Nitride ◽  
Heterogeneous Catalysts ◽  
Methane Sulfonic Acid ◽  
Environment Friendly ◽  
The Poor ◽  
Catalytic Sites ◽  
Homogeneous Photocatalysis ◽  
Polymeric Carbon ◽  
First Time

<a></a><a>As a metal-free conjugated polymer, carbon nitride (CN) has attracted tremendous attention as heterogeneous (photo)catalysts. </a><a></a><a>By following prototype of enzymes, making all catalytic sites of accessible via homogeneous reactions is a promising approach toward maximizing CN activity, but hindered due to </a><a></a><a>the poor insolubility of CN</a>. Herein, we report the dissolution of CN in environment-friendly methane sulfonic acid and the homogeneous photocatalysis driven by CN for the first time with the activity boosted up to 10-times, comparing to the heterogeneous counterparts. Moreover, facile recycling and reusability, the <a>hallmark</a> of heterogeneous catalysts, were kept for the homogeneous CN photocatalyst via reversible precipitation using poor solvents. It opens new vista of CN in homogeneous catalysis and offers a successful example of polymeric catalysts in bridging gaps of homo/heterogeneous catalysis.

Infrared Response in a Polymeric Carbon Nitride Via an Upconversion Mechanism

2019 ◽  
Author(s):  
Zhengyuan Jin ◽  
Xiantao Jiang ◽  
Qitao Zhang ◽  
Shaolong Huang ◽  
Luhong Zhang ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Upconversion Mechanism ◽  
Polymeric Carbon
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