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

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.

CrystEngComm ◽  
2018 ◽  
Vol 20 (16) ◽  
pp. 2292-2298 ◽  
Author(s):  
Jian Xu ◽  
Yan-Ge Mao ◽  
Ting Liu ◽  
Yin Peng

A novel rod-like BiOBr–Bi4O5Br2 heterostructure with a high quality interface is synthesized by calcining a BiOBr precursor in air. The BiOBr–Bi4O5Br2 heterostructure exhibits outstanding photocatalytic activity for degrading RhB dyes at high concentrations under visible/solar light irradiation.


CrystEngComm ◽  
2017 ◽  
Vol 19 (43) ◽  
pp. 6473-6480 ◽  
Author(s):  
Yin Peng ◽  
Jian Xu ◽  
Ting Liu ◽  
Yan-ge Mao

One-dimensional (1D) rod-like BiOBr with exposed (110) facets was synthesized using glucose as a capping agent and structure-directing agent. The BiOBr with exposed (110) facets exhibits outstanding photocatalytic activity for degrading MO dyes at high concentrations under solar light irradiation.


RSC Advances ◽  
2015 ◽  
Vol 5 (38) ◽  
pp. 30120-30124 ◽  
Author(s):  
K. Vignesh ◽  
Sora Kang ◽  
Byeong Sub Kwak ◽  
Misook Kang

A schematic diagram of the electron–hole transfer process in ZnO-nt under simulated solar light irradiation.


2019 ◽  
Vol 56 ◽  
pp. 152-157 ◽  
Author(s):  
Abdelouahab Noua ◽  
Hichem Farh ◽  
Rebai Guemini ◽  
Oussama Zaoui ◽  
Tarek Diab Ounis ◽  
...  

Nickel oxide (NiO) thin films were successfully deposited by sol-gel dip-coating method on glass substrates. The structural, morphological and optical properties in addition to the photocatalytic activity of the prepared films were investigated. The results show that the films have a polycrystalline NiO cubic structure with dense NiO grains and average optical transmittance in the visible region. The photocatalytic properties of the films were studied through the degradation of methylene blue and 89% of degradation was achieved for 4.5h of solar light irradiation exposure which indicates the capability of NiO photocatalytic activity.


Author(s):  
Brijesh Pare ◽  
Satish Piplode ◽  
Vaishali Joshi

Flower like bismuth oxy chloride (BiOCl) was successfully synthesized by a simple hydrolytic method at room temperature. The precursor and as-prepared samples were characterized by X-ray diffraction (XRD), High Resolution Field Emission Scanning Electron Microscope (HR FESEM). The results indicated that the as-prepared BiOCl sample is self-assembled hierarchically with nano sheets. The photocatalytic activity of BiOCl was tested on the degradation of the Oxamyl (OM) under solar light irradiation. The results showed that pesticide molecules could be efficiently degraded over BiOCl under solar light irradiation. All the experiment were carried out in the following reaction condition, [OM] = 10-4 mol dm-3, BiOCl NPs= 40mg/50ml, pH= 6.3. Effect of operational parameter such as concentration of H2O2, K2S2O8, FeCl3, Fenton’s reagent (Fe3+/H2O2) and N2, O2 purging on the photocatalytic degradation was observed.


2018 ◽  
Vol 42 (18) ◽  
pp. 15405-15412 ◽  
Author(s):  
María Emilia Villanueva ◽  
Guillermo Javier Copello ◽  
Viviana Campo Dall’Orto

The photocatalytic degradation of different emergent contaminants in aqueous solutions has been studied by using oligomer-coated TiO2 nanoparticles under solar light irradiation.


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