نتایج جستجو برای: heterogeneous photocatalysis

تعداد نتایج: 128833  

2018
Deivisson Lopes Cunha Alexei Kuznetsov Carlos Alberto Achete Antonio Eduardo da Hora Machado Marcia Marques

Heterogeneous photocatalysis using titanium dioxide as catalyst is an attractive advanced oxidation process due to its high chemical stability, good performance and low cost. When immobilized in a supporting material, additional benefits are achieved in the treatment. The purpose of this study was to develop a simple protocol for impregnation of TiO2-P25 on borosilicate glass spheres and evalua...

Journal: : 2022

In this work, the photocatalytic activity and sorption capacity of heterogeneous structures AgCl/h-BN obtained by polyol method were studied in comparison with initial micron-sized h-BN powder. The chemical phase composition, as well surface microstructure, analyzed scanning electron microscopy, energy dispersive spectroscopy, X-ray analysis, photoelectron spectroscopy. High ability AgCl/BN rea...

2004

The principles and applications of semiconductor electrodes in photoelectrochemical cells (liquid junction photovoltaic, photoelectrosynthetic, and photocatalytic) are described. The extension of the principles of these cells to the design of simple particle systems for carrying out light-driven chemical reactions is discussed. [The SCI indicates that this paper has been cited in more than 245 ...

Journal: :Catalysts 2022

Methylthionine chloride (MTC) is a compound with several applications both in the clinical and medical industries. Nevertheless, such compounds can become an environmental problem, as they are not properly treated by wastewater treatment plants. This objective of this work was to study MTC degradation flat plate reactor through solar photolysis heterogeneous photocatalysis processes TiO2 cataly...

Journal: :Chemcatchem 2023

Abstract Selective photooxidation of aromatic alcohols to corresponding aldehydes is a widely used model reaction for evaluation performance heterogeneous photocatalysts. A top example the photocatalytic production hydrogen peroxide via reduction dioxygen with concomitant benzyl alcohol benzaldehyde. Herein we demonstrate ability benzaldehyde promote auto‐photocatalytic oxidation and produce la...

2013
A. E. H. Machado

The interest on application of metal oxides semiconductors in photocatalysis and in photoelectrochemical devices has constantly increased. The different fields in which metal oxide-based semiconductors are applied include environmental remediation, photovoltaics, self-cleaning surfaces and hydrogen production. In the present review, the recent advances on synthesis and characterization of metal...

Journal: :Chemical communications 2016
Yi Zhou Qiuying Yi Mingyang Xing Lu Shang Tierui Zhang Jinlong Zhang

Sandwich structured graphene modified TiO2 mesoporous single crystals (GR-MSCs) were obtained by using the graphene embedded silica spheres as the hard template, via a hydrothermal treatment. The selective photocatalysis of TiO2 can be achieved by controlling the location of graphene in TiO2 mesoporous single crystals. The sandwich structured graphene-TiO2 composite has a photooxidation surface...

Journal: : 2023

The solar photocatalytic degradation of diuron, which is one the herbicides, has been studied by a pilot plant in heterogeneous photocatalysis with titanium dioxide. was made up compound parabolic collectors specially designed for applications. influence different variables such as, H2O2 initial concentration, TiO2 and diuron concentration their relationship to efficiency were studied. Hydrogen...

A Zeidi, F* Mehrjo,

Background & objectives: Malachite green color has been extensively used in aquaculture industry around the world. The drainage of colored wastewater containing malachite green to aquatic ecosystems has created very serious risks for human health and the environment. The purpose of this study was to investigate the removal of green malachite from aqueous solutions using photocatalysis of titani...

Journal: :Energies 2022

Today, as a result of the advancement technology and increasing environmental problems, need for clean energy has considerably increased. In this regard, hydrogen, which is sustainable carrier with high density, among well-regarded effective means to deliver store energy, can also be used remediation purposes. Renewable hydrogen carriers successfully substitute fossil fuels decrease carbon diox...

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