نتایج جستجو برای: cuog c3n4 nanocomposite

تعداد نتایج: 14854  

Journal: :Diamond and Related Materials 2022

Although there are several reports about the beneficial performance of metal doped graphitic carbon nitrides (g-C3N4) in various photocatalytic reactions, effect different alkali dopants has not been studied systematically. Series undoped, Li-, Na- and K-doped samples was synthetized used for preparation novel type photocatalysts, composed palladium nanoparticles supported on metals-doped nitri...

Journal: :Nano Research 2021

Photocatalytic hydrogen evolution reaction (PC-HER) provides a solution to energy crisis and environmental pollution. Herein, different graphitic carbon nitride (g-C3N4)-based van der Waals (vdW) type II homojunctions have been fabricated g-C3N4/K-doped g-C3N4 nanosheets an outstanding PC-HER rate of 1,243 µmol-h?1·g?1 under visible light, higher than that bulk g-C3N4, doped nanosheets, mixed n...

2014
E A K Nivethaa S. Dhanavel V Narayanan

Chitosan/multiwalled carbon nanotube nanocomposite has been successfully synthesized by the chemical method. The prepared nanocomposite was characterized using XRD, FTIR and HRTEM. The XRD pattern of the nanocomposite shows the presence of planes corresponding to both chitosan and MWCNT and the absence of impurity phases. The semi-crystalline nature of chitosan is also evident from the obtained...

Journal: :Energy & environmental materials 2023

Ultraviolet position-sensitive detectors (PSDs) are expected to undergo harsh environments, such as high temperatures, for a wide variety of applications in military, civilian, and aerospace. However, no report on relevant PSDs operating at temperatures can be found up now. Herein, we design new 2D/3D graphitic carbon nitride (g-C3N4)/gallium (GaN) hybrid heterojunction construct the ultraviole...

Journal: :Chemical communications 2014
Song Bai Xijun Wang Canyu Hu Maolin Xie Jun Jiang Yujie Xiong

Two-dimensional g-C3N4 nanosheets with few-layer thickness, ensuring equivalent charge migrations to various Pd facets, provide an ideal model system for reliably examining the facet selectivity of Pd co-catalysts. It reveals that reduction of CO2 can occur better on Pd{111} facets while H2O prefers to generate H2 on Pd{100}.

Journal: :Chemical communications 2015
Xinyuan Xia Ning Deng Guanwei Cui Junfeng Xie Xifeng Shi Yingqiang Zhao Qian Wang Wen Wang Bo Tang

NIR light induced H2 evolution was realized by metal-free photocatalysis for the first time. The considerable H2 production at 808 nm and large promotion of the photocatalytic activity in both UV-Vis and Vis regions originated from the synergistic effect on spectral and electronic coupling of g-C3N4 nanosheets and carbon quantum dots.

Journal: :Nanoscale 2011
Jinzhu Li Yun Gao Wenjun Ma Luqi Liu Zhong Zhang Zhiqiang Niu Yan Ren Xiaoxian Zhang Qingshen Zeng Haibo Dong Duan Zhao Le Cai Weiya Zhou Sishen Xie

We develop a facile, effective and filter free infiltration method to fabricate high performance, freestanding and superthin epoxy nanocomposite films with directly synthesized Sing-Walled Carbon Nanotubes (SWNTs) film as reinforcement skeleton. It is found that the thicknesses of the nanocomposite films can be easily controlled in the range of 0.5-3 μm by dripping target amount of acetone dilu...

Journal: :Chemical communications 2016
M Abdullah Khan Ivo F Teixeira Molly M J Li Yusuke Koito Shik Chi Edman Tsang

Graphitic-C3N4 is shown for the first time to catalyse photoacetalization of aldehydes/ketones with alcohols to acetals in high yields using visible light under ambient conditions; transient charge separation over the material is effective to catalyse the reaction in the absence of Lewis or Brønsted acids, giving a new green alternative catalyst.

2009
Ying Ma

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Journal: :Molecules 2016
Klebson Silva Santos Andriele Mendonça Barbosa Luiz Pereira da Costa Malone Santos Pinheiro Maria Beatriz Prior Pinto Oliveira Francine Ferreira Padilha

Bacterial resistance is an emerging public health issue that is disseminated worldwide. Silver nanocomposite can be an alternative strategy to avoid Gram-positive and Gram-negative bacteria growth, including multidrug-resistant strains. In the present study a silver nanocomposite was synthesized, using a new green chemistry process, by the addition of silver nitrate (1.10-3 mol·L-1) into a ferm...

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