High photocatalytic activity for the degradation of rhodamine B in water

2021 ◽  
Author(s):  
M. Khachane ◽  
A. Bouddouch ◽  
B. Bakiz ◽  
A. Benlhachemi ◽  
Y. Kadmi
Keyword(s):  
Photocatalytic Activity ◽  
Rhodamine B ◽  
High Photocatalytic Activity

Synthesis of Bi2WO6/g-C3N4 photocatalyst and high degradation of Rhodamine B under visible light irradiation

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Wenjie Wang ◽  
Mengran Zhang ◽  
Binxia Zhao ◽  
Linxue Liu ◽  
Ruixuan Han ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rhodamine B ◽  
Hydrothermal Reaction ◽  
Active Species ◽  
High Photocatalytic Activity ◽  
Rapid Separation ◽  
Content Type ◽  
Photogenerated Electrons ◽  
Molecular Substances ◽  
Photocatalytic Material

Purpose The purpose of this paper is to improve the degradation efficiency of Rhodamine B (RhB) by new photocatalytic materials. Design/methodology/approach Binary Z-scheme g-C3N4/Bi2WO6 photocatalytic material was synthesized by the one-step hydrothermal reaction. The construction of Z-scheme heterojunction led to the rapid separation of photogenerated electrons and holes, which would degrade RhB into small molecular substances to achieve the purpose of degradation. Findings It was found that Bi2WO6/25%g-C3N4 displayed the highest photocatalytic activity, which was about 1.44 and 1.34 times higher than that of pure Bi2WO6 and g-C3N4, respectively. According to the trapping experiments, the superoxide radical (·O2−) was the major active species of the RhB decomposition in Bi2WO6/g-C3N4 catalysts. Originality/value The successful synthesis of Z-scheme Bi2WO6/g-C3N4 provides new ideas and references for the design of catalysts with high photocatalytic activity, which should have wide applications in the future.

scholarly journals Hydrazine and Urea Fueled-Solution Combustion Method for Bi2O3 Synthesis: Characterization of Physicochemical Properties and Photocatalytic Activity

2019 ◽  
Vol 15 (1) ◽  
pp. 104-111 ◽  
Author(s):  
Yayuk Astuti ◽  
Prisca Putri Elesta ◽  
Didik Setyo Widodo ◽  
Hendri Widiyandari ◽  
Ratna Balgis
Keyword(s):  
Crystal Structure ◽  
Photocatalytic Activity ◽  
Bismuth Oxide ◽  
Rhodamine B ◽  
Combustion Method ◽  
High Photocatalytic Activity ◽  
Synthesis Process ◽  
Solution Combustion ◽  
Solution Combustion Method ◽  
Structure Morphology

Bismuth oxide synthesis using solution combustion method fuelled by hydrazine and urea has been conducted. This study aims to examine the effect of the applied fuels, urea and hydrazine, on product characteristics and photocatalytic activity in degrading rhodamine B dye. Bismuth oxide synthesis was initiated by dissolving bismuth nitrate pentahydrate (Bi(NO3)3.5H2O) in a nitric acid solvent. Fuel was added and then stirred. The solution formed was heated at 300 ºC for 8 hours. The product obtained was then calcined at 700 ºC for 4 hours. Bismuth oxide synthesized with urea (BO1) and hydrazine (BO2) as fuels both obtained form of yellow powder. The formation of bismuth oxide is indicated by the vibrations of the Bi–O–Bi and Bi–O groups and the crystal structure of a-Bi2O3 in both products. Photocatalytic activity test showed that BO1 has a photocatalyst activity in degrading rhodamine B higher than that of BO2 with constant values of  3.83×10-5 s-1 and 3.43×10-5 s-1, respectively. The high photocatalytic activity can be examined through several factors, such as: band gap values, crystal structure, morphology, and surface area, acquired as a result of the use of different fuels in the synthesis process. Copyright © 2020 BCREC Group. All rights reserved 

scholarly journals Синтез легированного кислородом графитоподобного нитрида углерода из тиомочевины

2019 ◽  
Vol 45 (3) ◽  
pp. 49
Author(s):  
Н.М. Денисов ◽  
Е.Б. Чубенко ◽  
В.П. Бондаренко ◽  
В.Е. Борисенко
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Thermal Treatment ◽  
Visible Light ◽  
Band Gap ◽  
Rhodamine B ◽  
Carbon Nitride ◽  
Annealing Temperature ◽  
High Photocatalytic Activity ◽  
Semiconductor Properties

AbstractWe have synthesized oxygen-doped graphite-like carbon nitride (g-C_3N_4) by the thermal treatment of the thiourea at 450–550°C. With an increase in the annealing temperature, the oxygen concentration in g-C_3N_4 increases, and the band-gap of the material decreases from 2.64 to 2.47 eV. The semiconductor properties of g-C_3N_4 doped with oxygen are confirmed by its high photocatalytic activity, determined by decoloration of a Rhodamine B aqueous solution in the presence of g-C_3N_4 upon irradiation with visible light.

BiOCl/SnS2 Core-Shell Photocatalyst for the Degradation of Organic Pollutants

NANO ◽  
2016 ◽  
Vol 11 (08) ◽  
pp. 1650087 ◽  
Author(s):  
Hui Meng ◽  
Tingting Wang ◽  
Hongbin Chen ◽  
Yizhu Liu ◽  
Xiang Yu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Organic Pollutants ◽  
Rhodamine B ◽  
High Performance ◽  
High Photocatalytic Activity ◽  
Cycle Life ◽  
Core Shell ◽  
Electron Hole ◽  
Fast Separation

BiOCl/SnS2 core-shell heterojunction is prepared by a facile and economic hydrothermal method. The obtained BiOCl/SnS2 heterojunction displays high photocatalytic activity in the degradation of Rhodamine B (RhB). The high performance is explained by the fast separation of the photoinduced electron–hole pairs promoted by the heterojunction. The cycle life of the heterojunction is also improved compared with individual BiOCl or SnS2.

High Photocatalytic Activity of Covalent Grafting of Phthalocyanines on Crosslinked Electrospun PVA/PAA Nanofibers

2016 ◽  
Vol 848 ◽  
pp. 419-424
Author(s):  
Zhen Jun Chang ◽  
Xiao Hui Jin ◽  
Jing Zeng ◽  
Tian You Song ◽  
Jing Zhang
Keyword(s):  
Electron Microscopy ◽  
Hydrogen Peroxide ◽  
Photocatalytic Activity ◽  
Rhodamine B ◽  
High Photocatalytic Activity ◽  
Esterification Reaction ◽  
Hybrid Nanofibers ◽  
Photocatalytic Application ◽  
Covalent Grafting ◽  
Photocatalytic Activities

Phthalocyanine coated crosslinked electrospun PVA/PAA nanofibers were prepared via electrospinning and esterification reaction. The structure of the as-prepared hybrid nanofibers were characterized by fourier transform infrared spectra, scan electron microscopy and UV–visiable absorption spectroscopy. Their photocatalytic activities were evaluated by the degradation of rhodamine B under visible light, and results showed that it exhibited high activity for degradation of rhodamine B in the presence of hydrogen peroxide. The recycling test was also carried out to prove its reusability in photocatalytic application

scholarly journals Novel one-pot synthesis and sensitisation of new BiOCl–Bi2S3 nanostructures from DES medium displaying high photocatalytic activity

RSC Advances ◽  
2016 ◽  
Vol 6 (81) ◽  
pp. 77329-77339 ◽  
Author(s):  
V. C. Ferreira ◽  
M. C. Neves ◽  
A. R. Hillman ◽  
O. C. Monteiro
Keyword(s):  
Photocatalytic Activity ◽  
Rhodamine B ◽  
High Photocatalytic Activity ◽  
One Pot ◽  
One Pot Synthesis ◽  
Synthetic Procedure

A novel one-pot synthetic procedure yields hierarchically nanostructured BiOCl–Bi2S3 nanoparticles with improved photocatalytic activity towards degradation of rhodamine B.

Self-assembled ultra-small zinc stannate nanocrystals with mesoscopic voids via a salicylate templating pathway and their photocatalytic properties

RSC Advances ◽  
2014 ◽  
Vol 4 (26) ◽  
pp. 13626-13634 ◽  
Author(s):  
Vandana Kumari ◽  
Astam K. Patra ◽  
Asim Bhaumik
Keyword(s):  
Photocatalytic Activity ◽  
Rhodamine B ◽  
High Photocatalytic Activity ◽  
Photocatalytic Properties ◽  
Zinc Stannate ◽  
Self Assembled

Self-assembled ultra small zinc stannate nanocrystals with mesoscopic void spaces show high photocatalytic activity in the photodegradation of Rhodamine B.

Synthesis of one-dimensional WO3–Bi2WO6 heterojunctions with enhanced photocatalytic activity

CrystEngComm ◽  
2015 ◽  
Vol 17 (3) ◽  
pp. 569-576 ◽  
Author(s):  
Yin Peng ◽  
Qing-Guo Chen ◽  
Dan Wang ◽  
Hai-Yan Zhou ◽  
An-Wu Xu
Keyword(s):  
Photocatalytic Activity ◽  
Rhodamine B ◽  
Photogenerated Electron ◽  
High Photocatalytic Activity ◽  
Light Irradiation ◽  
Solar Light ◽  
Electron Hole ◽  
One Dimensional ◽  
Effective Separation ◽  
Solar Light Irradiation

A one-dimensional WO3–Bi2WO6 photocatalyst exhibits high photocatalytic activity for the degradation of rhodamine B (RhB) under solar light irradiation, which is attributed to the effective separation of photogenerated electron–hole pairs by the staggered band potentials between WO3 and Bi2WO6.

scholarly journals In situ strategy to prepare PDPB/SnO2 p–n heterojunction with a high photocatalytic activity

RSC Advances ◽  
2017 ◽  
Vol 7 (39) ◽  
pp. 24064-24069 ◽  
Author(s):  
Yuhang Wang ◽  
Yuanxin Deng ◽  
Linggang Fan ◽  
Yu Zhao ◽  
Bin Shen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rhodamine B ◽  
Light Absorption ◽  
Charge Separation ◽  
High Photocatalytic Activity ◽  
Growth Strategy ◽  
Solar Light ◽  
Photodegradation Rate

PDPB/SnO2 heterojunction has been successfully synthesized by an in situ growth strategy, which displays a narrowed bandgap, enhanced solar light absorption, excellent charge separation and improved solar-driven photodegradation rate of Rhodamine B.

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