Tandem oxidative amidation of alcohols catalyzed by copper modified well-ordered mesoporous graphitic carbon nitride

Biohazards are widely present in water, and a variety of waterborne diseases can be aroused by contaminated water. Therefore, the effective removal of biological hazards from water is necessary for the protection of human health. In this study, graphitic carbon nitride (g-C3N4) with ordered mesoporous nanostructures was successfully synthesized by a template method using SBA-15 as a hard template. The morphology, crystal structure, specific surface area, molecular structure, and light absorption properties of the as-prepared sample were characterized by TEM, XRD, BET, FT-IR, and UV-Vis DRS, respectively. The photocatalytic performance of the ordered mesoporous g-C3N4 was evaluated by the inactivation of Escherichia coli K-12 in water under visible light irradiation. Results showed that the bacterial inactivation efficiency can reach as high as 99% within 2 h of VL irradiation, which is 4 times higher than that of bulk g-C3N4. Moreover, the photocatalytic bacterial inactivation mechanism was revealed by a scavenging study, and the main active species in the photocatalytic inactivation process was found to be a photogenerated hole. This work will provide useful information for the development of new efficient g-C3N4-based materials for enhanced water disinfection applications by introducing ordered mesoporous nanostructures in a photocatalyst design and fabrication.

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Synthesis of graphitic carbon nitride nanosheets decorated spherical‐like nickel oxide composites for carbon monoxide gas‐sensing application

Micro & Nano Letters ◽

10.1049/mnl.2019.0436 ◽

2019 ◽

Vol 14 (14) ◽

pp. 1410-1413

Author(s):

Xiaoze Li ◽

Wendi Tian ◽

Jianbo Jia ◽

Jianliang Cao ◽

Zhanying Zhang ◽

...

Keyword(s):

Carbon Monoxide ◽

Nickel Oxide ◽

Carbon Nitride ◽

Gas Sensing ◽

Graphitic Carbon ◽

Graphitic Carbon Nitride ◽

Sensing Application ◽

Carbon Nitride Nanosheets ◽

Oxide Composites

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Two Dimensional Nanosheet of Graphitic Carbon Nitride and Graphene: An Efficient Spin Filter With Robust Negative Differential Resistance Action

SSRN Electronic Journal ◽

10.2139/ssrn.3526726 ◽

2020 ◽

Author(s):

Rinki Bhowmick ◽

Vishal Kashyap ◽

Yachna Raj ◽

Sabyasachi Sen

Keyword(s):

Negative Differential Resistance ◽

Carbon Nitride ◽

Differential Resistance ◽

Graphitic Carbon ◽

Graphitic Carbon Nitride ◽

Two Dimensional ◽

Spin Filter

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

Current Organic Chemistry ◽

10.2174/1385272823666190709113758 ◽

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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