Heterogeneous photocatalytic anaerobic oxidation of alcohols to ketones by Pt-mediated hole oxidation

2020 ◽  
Vol 56 (79) ◽  
pp. 11847-11850
Author(s):  
Danhui Sun ◽  
Peihe Li ◽  
Xia Wang ◽  
Yingying Wang ◽  
Jinghui Wang ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Solid Catalyst ◽  
Anaerobic Oxidation ◽  
Selective Transformation ◽  
Highly Active ◽  
Oxidation Of Alcohols ◽  
Composite Solid

We report a platinum nanocluster/graphitic carbon nitride (Pt/g-C3N4) composite solid catalyst with a photocatalytic anaerobic oxidation function for highly active and selective transformation of alcohols to ketones.

A highly active and stable palladium catalyst on a g-C3N4 support for direct formic acid synthesis under neutral conditions

2016 ◽  
Vol 52 (99) ◽  
pp. 14302-14305 ◽  
Author(s):  
Hunmin Park ◽  
Ju Hyung Lee ◽  
Eun Hyup Kim ◽  
Kwang Young Kim ◽  
Yo Han Choi ◽  
...  
Keyword(s):  
Formic Acid ◽  
Palladium Catalyst ◽  
Carbon Nitride ◽  
Acid Synthesis ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Pd Catalyst ◽  
Highly Active ◽  
Neutral Conditions

Graphitic carbon nitride (g-C3N4) is applied as a support of the Pd catalyst for direct HCOOH synthesis by CO2 hydrogenation under neutral conditions.

scholarly journals Influence of Hydrogenation on Morphology, Chemical Structure and Photocatalytic Efficiency of Graphitic Carbon Nitride

2021 ◽  
Vol 22 (23) ◽  
pp. 13096
Author(s):  
Daria Baranowska ◽  
Tomasz Kędzierski ◽  
Małgorzata Aleksandrzak ◽  
Ewa Mijowska ◽  
Beata Zielińska
Keyword(s):  
Photocatalytic Activity ◽  
Active Sites ◽  
Chemical Structure ◽  
Carbon Nitride ◽  
Elevated Temperatures ◽  
Hydrogen Atmosphere ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Efficiency ◽  
Highly Active

In this contribution, the effect of hydrogenation conditions atmosphere (temperature and time) on physicochemical properties and photocatalytic efficiency of graphitic carbon nitride (g-C3N4, gCN) was studied in great details. The changes in the morphology, chemical structure, optical and electrochemical properties were carefully investigated. Interestingly, the as-modified samples exhibited boosted photocatalytic degradation of Rhodamine B (RhB) with the assistance of visible light irradiation. Among modified gCN, the sample annealed at 500 °C for 4 h (500-4) in H2 atmosphere exhibited the highest photocatalytic activity—1.76 times higher compared to pristine gCN. Additionally, this sample presented high stability and durability after four cycles. It was noticed that treating gCN with hydrogen at elevated temperatures caused the creation of nitrogen vacancies on gCN surfaces acting as highly active sites enhancing the specific surface area and improving the mobility of photogenerated charge carriers leading to accelerating the photocatalytic activity. Therefore, it is believed that detailed optimization of thermal treatment in a hydrogen atmosphere is a facile approach to boost the photoactivity of gCN.

scholarly journals Modulating Crystallinity of Graphitic Carbon Nitride for Photocatalytic Oxidation of Alcohols

ChemSusChem ◽  
2017 ◽  
Vol 10 (22) ◽  
pp. 4451-4456 ◽  
Author(s):  
Min Zhou ◽  
Pengju Yang ◽  
Rusheng Yuan ◽  
Abdullah M. Asiri ◽  
Muhammad Wakeel ◽  
...  
Keyword(s):  
Photocatalytic Oxidation ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Oxidation Of Alcohols

scholarly journals Facile synthesis of highly active fluorinated ultrathin graphitic carbon nitride for photocatalytic H2 evolution using a novel NaF etching strategy

RSC Advances ◽  
2018 ◽  
Vol 8 (48) ◽  
pp. 27021-27026 ◽  
Author(s):  
Yanfei Liu ◽  
Junjie Wang ◽  
Chaochuang Yin ◽  
Huazhen Duan ◽  
Shifei Kang ◽  
...  
Keyword(s):  
Charge Separation ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
H2 Evolution ◽  
Facile Synthesis ◽  
Highly Active ◽  
Photocatalytic H2 Evolution

Although graphitic carbon nitride (GCN) has been intensively studied in photocatalytic research, its performance is still hindered by its inherently low photo-absorption and inefficient charge separation.

Graphitic Carbon Nitride Isotype Heterostructures with Enhanced Visible Photocatalytic Properties

NANO ◽  
2017 ◽  
Vol 12 (04) ◽  
pp. 1750042 ◽  
Author(s):  
Lujia Cong ◽  
Hongchen Mu ◽  
Shan Zhang ◽  
Mingyi Zhang ◽  
Zhenyu Zhao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Charge Separation ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Reaction ◽  
Transient Photocurrent ◽  
Highly Active ◽  
Composite Photocatalysts ◽  
Interfacial Charge

In this work, highly active graphitic carbon nitride composite photocatalysts with an isotype heterojunction semiconductor structure have been prepared through the molecular composite precursors consisting of urea and melamine. These photocatalysts were characterized by XRD, SEM, TEM, UV-Vis, BET and transient photocurrent responses. The photodegradation of dyes in aqueous solution under visible-light irradiation has been investigated over carbon nitride photocatalysts consisting of different urea/melamine mass ratios. Further studies by photocurrent indicate that the photosynergistic effect of isotype heterojunction can remarkably enhance the photoinduced interfacial charge transfer, thereby increasing the charge separation during the photocatalytic reaction.

scholarly journals Graphitic carbon nitride “reloaded”: emerging applications beyond (photo)catalysis

2016 ◽  
Vol 45 (8) ◽  
pp. 2308-2326 ◽  
Author(s):  
Jian Liu ◽  
Hongqiang Wang ◽  
Markus Antonietti
Keyword(s):  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Metal Free ◽  
Highly Active ◽  
Photo Catalysis

Despite being one of the oldest materials described in the chemical literature, graphitic carbon nitride (g-C3N4) has just recently experienced a renaissance as a highly active photo/electrocatalyst, and the metal-free polymer was also shown to be have diverse applications in various fields.

Sign in / Sign up

Export Citation Format

Share Document