نتایج جستجو برای: graphitic carbon nitride

تعداد نتایج: 294191  

Journal: :Faraday Discussions 2021

We investigated the electronic structures of novel graphitic carbon nitride-based materials by replacing nitrogen linker with heteroatoms or aromatic groups.

2017
Qiushi Ruan Wenjun Luo Jijia Xie Yiou Wang Xu Liu Zhiming Bai Claire J Carmalt Junwang Tang

A metal-free photoanode nanojunction architecture, composed of B-doped carbon nitride nanolayer and bulk carbon nitride, was fabricated by a one-step approach. This type of nanojunction (s-BCN) overcomes a few intrinsic drawbacks of carbon nitride film (severe bulk charge recombination and slow charge transfer). The top layer of the nanojunction has a depth of ca. 100 nm and the bottom layer is...

Journal: :Physical review letters 2012
Aijun Du Stefano Sanvito Sean C Smith

Transition metal-free magnetism and half-metallicity recently has been the subject of intense research activity due to its potential in spintronics application. Here we, for the first time, demonstrate via density functional theory that the most recently experimentally realized graphitic carbon nitride (g-C4N3) displays a ferromagnetic ground state. Furthermore, this novel material is predicted...

Journal: :Chemical communications 2012
Eun Zoo Lee Sun Uk Lee Nam-Su Heo Galen D Stucky Young-Si Jun Won Hi Hong

A turn-on fluorescence sensor, Cu(2+)-c-mpg-C(3)N(4), was developed for detection of CN(-) in aqueous solution by simply mixing cubic mesoporous graphitic carbon nitride (c-mpg-C(3)N(4)) and aqueous solution of Cu(NO(3))(2). The highly sensitive detection of CN(-) with a detection limit of 80 nM is not only possible in aqueous solution but also in human blood serum.

Journal: :Chemical communications 2016
Xiyu Li Peng Cui Wenhui Zhong Jun Li Xijun Wang Zhaowu Wang Jun Jiang

Based on DFT calculations, we propose a TM@CN hybrid structure, in which the single-atom transition metal (TM = Pt, Pd, Co, Ni, Cu) is supported by graphitic carbon nitride (g-CN), as a promising high-performance OER catalyst. Our work reveals the importance of local TM coordination in catalysts for the OER, which would lead to a new class of low-cost, durable and efficient OER catalysts.

2015
Muhammad Tahir Nasir Mahmood Jinghan Zhu Asif Mahmood Faheem K. Butt Syed Rizwan Imran Aslam M. Tanveer Faryal Idrees Imran Shakir Chuanbao Cao Yanglong Hou

To explore the effect of morphology on catalytic properties of graphitic carbon nitride (GCN), we have studied oxygen reduction reaction (ORR) performance of two different morphologies of GCN in alkaline media. Among both, tubular GCN react with dissolved oxygen in the ORR with an onset potential close to commercial Pt/C. Furthermore, the higher stability and excellent methanol tolerance of tub...

Journal: : 2022

Graphitic carbon nitride ( g -C 3 N 4 ) was synthesized by pyrolysis of thiocarbamide and a subsequent polymerization its products at 500 °С. After grinding the material, aqueous suspensions with concentrations particles 100–300 μg/ml were prepared from it. The antibacterial activity material under irradiation LED’s visible light for 60–120 min confirmed Escherichia coli , Staphylococcus aureus...

Visible light active graphitic carbon nitride/reduced graphene oxide/silver oxide nanocomposites with a p-n heterojunction structure were synthesized by chemical deposition methods. Prepared samples were characterized by different physico-chemical technics such as XRD, FTIR, SEM, TEM and DRS. Photocatalytic activity investigated by analyzing the Acid blue 92 (AB92) concentration during the time...

2013
Ashkan Salamat Malek Deifallah Raul Quesada Cabrera Furio Corà Paul F. McMillan

The compression of the layered carbon nitride C6N9H3 · HCl was studied experimentally and with density functional theory (DFT) methods. This material has a polytriazine imide structure with Cl(-) ions contained within C12N12 voids in the layers. The data indicate the onset of layer buckling accompanied by movement of the Cl(-) ions out of the planes beginning above 10-20 GPa followed by an abru...

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