All-inorganic perovskite/graphitic carbon nitride composites for CO2 photoreduction into C1 compounds under low concentrations of CO2

2019 ◽  
Vol 48 (37) ◽  
pp. 14115-14121 ◽  
Author(s):  
Siqi You ◽  
Shaohong Guo ◽  
Xue Zhao ◽  
Min Sun ◽  
Chunyi Sun ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Photochemical Reduction ◽  
Co2 Photoreduction ◽  
Inorganic Perovskite ◽  
Low Concentrations

An all-inorganic perovskite (CsPbBr3) was introduced into g-C3N4 to fabricate the CsPbBr3@g-C3N4 photocatalyst for photochemical reduction in diluted CO2.

Ultrathin mesoporous graphitic carbon nitride nanosheets with functional cyano groups decoration and nitrogen vacancy defects for efficient selective CO2 photoreduction

Nanoscale ◽  
2021 ◽  
Author(s):  
Junyi Li ◽  
Xiaohan Wang ◽  
Liang Huang ◽  
Liang Tian ◽  
Menny Shalom ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Nitrogen Vacancy ◽  
Graphitic Carbon Nitride ◽  
Co2 Photoreduction ◽  
Vacancy Defects ◽  
Carbon Nitrides ◽  
Cyano Groups ◽  
Carbon Nitride Nanosheets

Graphitic carbon nitrides have photoreduction CO2 ability, but their activities are limited by the low potential and mobility of photogenerated carriers. Herein, ultrathin mesoporous graphitic carbon nitride nanosheets (CNNS) synchronously...

scholarly journals Silver Nanoparticles Supported Graphitic Like Carbon Nitride for the Electrochemical Sensing of Nitrobenzene and its Derivatives

2021 ◽  
Author(s):  
Pandiyarajan C ◽  
Rameshkumar Perumal ◽  
Murugesan S ◽  
Selvaraj M
Keyword(s):  
Silver Nanoparticles ◽  
Carbon Nitride ◽  
Limit Of Detection ◽  
Electrochemical Techniques ◽  
Graphitic Carbon ◽  
Electrochemical Sensing ◽  
Graphitic Carbon Nitride ◽  
Transmission Electron ◽  
Low Concentrations ◽  
Ft Ir

Abstract Nitrobenzene (NB) is toxic even at low concentrations and hence, its contamination in the environment is a pervasive concern. The electrochemical techniques have emerged as rosy method to sense and degrade NB and graphitic carbon nitride (g-C3N4) catalysts are found to be promising for this. In this study, silver nanoparticles (AgNPs) decorated N-[3-(trimethoxysilyl)propyl]ethylenediamine (EDAS) modified graphitic carbon nitride nanocomposites (EDAS/(g-C3N4-Ag)NC) having various silver concentrations are prepared through a facile method and applied for the electrochemical sensing of NB derivatives. UV-vis absorption edge at 430 nm together with a broad surface plasmon resonance (SPR) peak at 450 nm indicates the existence of AgNPs on the g-C3N4 nanosheets. FT-IR spectra endorse the presence of g-C3N4 nanosheets in the composite. The presence of Ag in EDAS/(g-C3N4-Ag)NC is confirmed by transmission electron microscopy, energy dispersive X-ray analysis and cyclic voltammetry (CV). The nanocomposite prepared with 2 mM Ag+ shows superb electrocatalytic activity towards the reduction of nitrobenzene and its derivatives. Sensitivity of the modified electrode and limit of detection (LOD) for NB assessed by square wave voltammetry are found to be 0.594 A M− 1 cm− 2 and 2 µM, respectively, in the linear range of 5–50 µM.

An insight into the reaction mechanism of CO2 photoreduction catalyzed by atomically dispersed Fe atoms supported on graphitic carbon nitride

2021 ◽  
Author(s):  
Zhengyan Zhao ◽  
Wei Liu ◽  
Yantao Shi ◽  
Heming Zhang ◽  
Xuedan Song ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Schematic Diagram ◽  
Co2 Photoreduction ◽  
Insight Into

The schematic diagram of the reaction mechanism of the g-C3N4 catalyst for the CO2RR.

Metal Doped-C3N4/Fe2O4: Efficient and Versatile Heterogenous Catalysts for Organic Transformations

2019 ◽  
Vol 23 (12) ◽  
pp. 1284-1306
Author(s):  
Vijai K. Rai ◽  
Fooleswar Verma ◽  
Suhasini Mahata ◽  
Smita R. Bhardiya ◽  
Manorama Singh ◽  
...  
Keyword(s):  
Ring Opening ◽  
Carbon Nitride ◽  
Addition Reaction ◽  
High Surface ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Organic Transformations ◽  
Reduction Reactions ◽  
Activation Reaction ◽  
Metal Doped

The polymeric graphitic carbon nitride (g-C3N4) has been one of the interesting earth abundant elements. Though g-C3N4 finds application as a photocatalyst, its photocatalytic behaviour is limited because of low efficiency, mainly due to rapid charge recombination. To overcome this problem, several strategies have been developed including doping of metal/non-metal in the cavity of g-C3N4. Moreover, the CoFe2O4 NPs have been used in many organic transformations because of its high surface area and easy separation due to its magnetic nature. This review describes the role of cobalt ferrite as magnetic nanoparticles and metal-doped carbon nitride as efficient heterogeneous catalysts for new carbon-carbon and carbon-hetero atom bond formation followed by heterocyclization. Reactions which involved new catalysts for selective activation of readily available substrates has been reported herein. Since nanoparticles enhance the reactivity of catalyst due to higher catalytic area, they have been employed in various reactions such as addition reaction, C-H activation reaction, coupling reaction, cyclo-addition reaction, multi-component reaction, ring-opening reaction, oxidation reaction and reduction reactions etc. The driving force for choosing this topic is based-on huge number of good publications including different types of spinels/metal doped-/graphitic carbon nitride reported in the literature and due to interest of synthetic community in recent years. This review certainly will represent the present status in organic transformation and for exploring further their catalytic efficiency to new organic transformations involving C-H activation reaction through coupling, cyclo-addition, multi-component, ring-opening, oxidation and reduction reactions.

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