نتایج جستجو برای: graphitic carbon nitride

تعداد نتایج: 294191  

Journal: : 2023

The synthesis of a composite material based on graphitic carbon nitride by pyrolytic decomposition at 550 °C mechanical mixture thiourea with the addition aluminum powder in amount 5–30 wt.% has been studied. According to scanning results means electron microscopy, energy dispersive X-ray spectroscopy, and diffractometry synthesized consists nitride, sulfide, residual metallic hydroxide. excess...

Journal: :Journal of the American Chemical Society 2010
Yuanjian Zhang Toshiyuki Mori Jinhua Ye Markus Antonietti

As a new kind of polymeric semiconductors, graphitic carbon nitride (g-C(3)N(4)) and its incompletely condensed precursors are stable up to 550 degrees C in air and have shown promising photovoltaic applications. However, for practical applications, their efficiency, limited e.g. by band gap absorption, needs further improvement. Here we report a "structural doping" strategy, in which phosphoru...

Journal: :Physical chemistry chemical physics : PCCP 2015
Guoping Gao Yan Jiao Fengxian Ma Yalong Jiao Eric Waclawik Aijun Du

Interfacing carbon nanodots (C-dots) with graphitic carbon nitride (g-C3N4) produces a metal-free system that has recently demonstrated significant enhancement of photo-catalytic performance for water splitting into hydrogen [Science, 2015, 347, 970-974]. However, the underlying photo-catalytic mechanism is not fully established. Herein, we have carried out density functional theory (DFT) calcu...

2015
Ok-Hee Kim Yong-Hun Cho Dong Young Chung Min Jeong Kim Ji Mun Yoo Ji Eun Park Heeman Choe Yung-Eun Sung

Although numerous reports on nonprecious metal catalysts for replacing expensive Pt-based catalysts have been published, few of these studies have demonstrated their practical application in fuel cells. In this work, we report graphitic carbon nitride and carbon nanofiber hybrid materials synthesized by a facile and gram-scale method via liquid-based reactions, without the use of toxic material...

Journal: :Catalysts 2023

In this study nitrogen-doped carbon quantum dots/graphitic nitride nanosheet (CNQD) composites with different contents of dots (NCQDs; 2, 4, 6, and 8 wt%) were synthesized. The morphological, physicochemical, photoelectrochemical properties investigated using complementary methods such as scanning electron microscopy (SEM), powder X-ray diffraction (pXRD), photoelectron spectroscopy (XPS), Four...

Journal: :Chemical communications 2008
Kai Chen Chunlei Wang Ding Ma Weixin Huang Xinhe Bao

A novel approach to fabricate highly graphitic carbon nanostructures such as carbon nanotubes (CNTs), metal/graphitic-shell nanocrystals and hollow carbon nanospheres (HCNSs) in a very short time is demonstrated.

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