نتایج جستجو برای: semiconductor photocatalysis

تعداد نتایج: 64124  

2012
Wen-Hsin Chung Chung-Shin Lu Wan-Yu Lin Jian-Xun Wang Chia-Wei Wu Chiing-Chang Chen

UNLABELLED BACKGROUND The discharge of wastewater that contains high concentrations of reactive dyes is a well-known problem associated with dyestuff activities. In recent years, semiconductor photocatalysis has become more and more attractive and important since it has a great potential to contribute to such environmental problems. One of the most important aspects of environmental photocat...

Journal: :Global challenges 2023

Often, H2 is produced photocatalytically at the expense of sacrificial agents. When a agent selectively oxidized, this allows coupling production with synthesis value-added organic compounds. Herein, it argued that conversion bioethanol into 1,1-diethoxyethane simultaneous increases economic viability photocatalysis and suggests semiconductor material most relevant for purpose.

Journal: :Nanoscale 2015
Sirshendu Ghosh Manas Saha Sumana Paul S K De

High quality nearly monodisperse colloidal WO3-x nanorods with an aspect ratio ∼18 were synthesized using the thermal decomposition technique. The effects of a capping agent and an activating agent on the nanorod aspect ratio have been studied. Excess carrier concentration due to large oxygen vacancy and smaller width of the nanorods compared to the Bohr exciton radius gives rise to an increase...

Journal: :Angewandte Chemie 2021

Metal–organic frameworks (MOFs) offer unique possibilities for the rational engineering of tailored physical properties. Nevertheless, molecular and porous nature MOFs leaves field juxtapositioned between semiconductor physics homogeneous photocatalysis. This Review reflects on how can resemble conventional semiconductors they are more like infinite molecules in solution.

Journal: :Journal of Physical Chemistry C 2021

Semiconductor nanorods with charge-accepting molecules adsorbed on their surfaces serve as model systems for solar energy conversion. An electron photoexcited from the valence band of nanorod to a high-energy state in conduction will relax and transfer molecule, producing long-lived charge-separated that facilitates charge extraction thereby enables photochemical reactions. Characterizing dynam...

2017
Bunsho Ohtani

Although the history of photocatalysis research is not so long, many researchers have studied photocatalysis and a large number of papers on photocatalysis have been published. The objectives of this review paper are to revisit the fundamentals of photocatalysis, especially its thermodynamics and kinetics, which have not been reexamined in recent studies, to clarify the problems, if any, that p...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1387

boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

2007
H. K. Shon S. Vigneswaran H. H. Ngo J.-H. Kim J. Kandasamy

Effects of different flocculants (chloride-based salts and ferric and ferrous salts) and initial organic concentration of wastewater on flocculation-photocatalysis hybrid process were investigated. Titanium Dioxide (TiO2) adsorption alone, flocculation alone, flocculation followed by TiO2 adsorption, photocatalysis alone, and flocculation followed by photocatalysis removed 60%, 72%, 80%, 85%, a...

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