One dimensional hierarchical BiOCl microrods: their synthesis and their photocatalytic performance

CrystEngComm ◽  
2018 ◽  
Vol 20 (48) ◽  
pp. 7809-7817 ◽  
Author(s):  
Yin Peng ◽  
Yan Ge Mao ◽  
Peng Fei Kan
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Sodium Citrate ◽  
Photocatalytic Performance ◽  
Organic Dyes ◽  
One Dimensional

One dimensional hierarchical BiOCl microrods are controlled synthesized via hydrothermal method using sodium citrate as structure-agent. These hierarchical BiOCl architectures exhibit outstanding photocatalytic activity for degrading organic dyes and phenol.

Enhanced Photocatalytic Performance of Iodine Doped Bi2WO6 Nanostructures under Visible-Light Irradiation

2013 ◽  
Vol 423-426 ◽  
pp. 163-166 ◽  
Author(s):  
Bao Wei Cao ◽  
Yun Hua Xu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrothermal Method ◽  
Absorption Spectra ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Red Shift ◽  
Light Irradiation ◽  
Photocatalytic Activities

Bi2WO6 doped with iodine ions were synthesized using hydrothermal method and their photocatalytic activities to degrade Rhodamine B (RhB) under visible-light was investigated. The successful incorporation of I ions in Bi2WO6 was proved by XRD and XPS. UV-vis absorption spectra results show that I ion was successfully doped into Bi2WO6 and a red shift for I-doped Bi2WO6 appeared when compared to pure Bi2WO6. The photocatalytic activities of the photocatalysts were evaluated by the decolorization of RhB under visible-light irradiation. The results showed that the photocatalytic activity of I-doped Bi2WO6 was much higher than the undoped Bi2WO6.

Co2+ and Ho3+ doped CuS nanocrystals with improved photocatalytic activity under visible light irradiation

RSC Advances ◽  
2016 ◽  
Vol 6 (48) ◽  
pp. 42581-42588 ◽  
Author(s):  
Zahra Hosseinpour ◽  
Sara Hosseinpour ◽  
Malik Maaza ◽  
Alice Scarpellini
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Gap Values

Co2+ and Ho3+ doped CuS nanostructures have been synthesized by a hydrothermal method. The nature of dopants influence the morphology, photocatalytic performance and the band gap values.

scholarly journals Influence of Heat Treatment on Photocatalytic Performance of BiVO4 Synthesized by Hydrothermal Method

2016 ◽  
Vol 35 (9) ◽  
pp. 853-856 ◽  
Author(s):  
Yi Shen ◽  
Xiaomin Wang ◽  
Guifu Zuo ◽  
Fengfeng Li ◽  
Yanzhi Meng
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

AbstractMonoclinic BiVO4 photocatalyst was successfully synthesized by hydrothermal method under appropriate temperature. The photocatalytic performance of BiVO4 was improved by calcining at appropriate temperature. The structural and morphological properties of the synthesized BiVO4 photocatalysts were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. It is confirmed that the photocatalytic activity of the prepared catalysts was evaluated by the photodegradation of RhB under visible-light irradiation. BiVO4 calcined under appropriate temperature exhibited higher photocatalytic activity than uncalcined BiVO4 under visible light irradiation because calcination might effectively increases the purity of monoclinic bismuth vanadate.

Fabrication of a novel few-layer WS2/Bi2MoO6 plate-on-plate heterojunction structure with enhanced visible-light photocatalytic activity

2018 ◽  
Vol 47 (30) ◽  
pp. 10046-10056 ◽  
Author(s):  
Xiang Li ◽  
Mengyuan Su ◽  
Guifen Zhu ◽  
Kaige Zhang ◽  
Xia Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrothermal Method ◽  
Photocatalytic Performance ◽  
Facile Hydrothermal Method ◽  
Heterojunction Structure ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

In this study, a novel few-layer WS2/Bi2MoO6 heterojunction with greatly enhanced visible light photocatalytic performance was synthesized via a facile hydrothermal method.

scholarly journals Synthesis of a Novel 1D/2D Bi2O2CO3–BiOI Heterostructure and Its Enhanced Photocatalytic Activity

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1284
Author(s):  
Yin Peng ◽  
Haozhi Qian ◽  
Nannan Zhao ◽  
Yuan Li
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Photocatalytic Performance ◽  
Raw Materials ◽  
Synergistic Effects ◽  
Two Dimensional ◽  
High Quality ◽  
Bioi Nanosheets

A novel 1D/2D Bi2O2CO3–BiOI heterojunction photocatalyst with high-quality interfaces was synthesized through a hydrothermal method by using Bi2O2CO3 nanorods and KI as raw materials. Two-dimensional (2D) BiOI nanosheets uniformly and vertically grow on the 1D porous Bi2O2CO3 rods. Bi2O2CO3–BiOI heterojunctions exhibit better photocatalytic activity than pure Bi2O2CO3 nanorods and BiOI nanosheets. Cr(VI) (30 mg/L), MO (20 mg/L) and BPA (20 mg/L) can be completely degraded in 8–15 min. The superior photocatalytic performance of 1D/2D Bi2O2CO3–BiOI heterojunction is ascribed to the synergistic effects: (a) vertical 2D on 1D multidimensional structure; (b) the formation of the Bi2O2CO3–BiOI p–n heterojunction; (c) high-quality interfaces between Bi2O2CO3 and BiOI.

scholarly journals Enhanced Photocatalytic Activity of BiOBr/ZnO Heterojunction Semiconductors Prepared by Facile Hydrothermal Method

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Xiangchao Meng ◽  
Lingyun Jiang ◽  
Weiwen Wang ◽  
Zisheng Zhang
Keyword(s):  
Optical Properties ◽  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
Diffuse Reflectance ◽  
Photocatalytic Performance ◽  
Enhancement Effect ◽  
Facile Hydrothermal Method ◽  
Sem Images ◽  
Xrd Patterns

Hexagonal wurtzite pure ZnO and BiOBr-ZnO composites were synthesized by facile hydrothermal method. The amount of BiOBr as dopant was adjusted from 5 wt.% to 75 wt.%, and correspondingly the morphologies and crystal structures of the as-prepared composites were measured and discussed. Specifically, according to XRD patterns and SEM images, the main crystalline structure of ZnO was not destroyed after doping, but growth of ZnO crystals was inhibited by doping BiOBr. Meanwhile, the optical properties of the composites were measured by the diffuse reflectance spectra (DRS). The band gap of composites was also calculated using the classical Tauc equation and it was found to be around 3.0 eV. In the test of photocatalytic activation, the ZnO-BiOBr photocatalysts exhibited high photocatalytic efficiencies in the degradation ofRhodamine B(RhB) under visible-light irradiation. It was ascribed to not only the small size of crystalline, but also the reduction in the recombination rate of the photogenerated carriers for the enhancement effect of p-n heterojunction. This work sheds light on improving the photocatalytic performance by establishing the heterojunction and contributes to the development of a commercially competitive photocatalyst.

Uniform SnO2 Hexagonal Prisms with Enhanced Photocatalytic Performance

2021 ◽  
Vol 16 (4) ◽  
pp. 624-629
Author(s):  
Yingxin Zhang ◽  
Xiaoxiong Song ◽  
Li Cui
Keyword(s):  
Photocatalytic Activity ◽  
Organic Pollutants ◽  
Uv Irradiation ◽  
Potential Application ◽  
Tin Dioxide ◽  
Photocatalytic Performance ◽  
Organic Dyes ◽  
Hydrothermal Route ◽  
One Step

In this work, SnO2 hexagonal prisms are successfully prepared by a simple one-step hydrothermal route. The photocatalytic activity of the synthesized product is studied through the degradation of several organic dyes. It shows that eosin red solution is almost degraded after 25 min with UV irradiation. The photodegradation of SnO2 samples with different morphologies and commercial tin dioxide powders are also compared. The as-prepared products exhibit excellent photocatalytic stability, revealing its potential application in the removal of organic pollutants from wastewater.

Synthesis of one-dimensional Bi2O2CO3–Bi(OHC2O4)·2H2O heterojunctions with excellent adsorptive and photocatalytic performance

RSC Advances ◽  
2016 ◽  
Vol 6 (48) ◽  
pp. 42452-42460 ◽  
Author(s):  
Yin Peng ◽  
Ke Ke Wang ◽  
Pian-Pian Yu ◽  
Ting Liu ◽  
An Wu Xu
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Performance ◽  
High Concentration ◽  
One Dimensional

Novel one-dimensional Βi2O2CO3–Βi2(OHC2O4)·2H2O heterostructure photocatalyst exhibits outstanding photocatalytic activity for degrading high concentration RhB, MB and MO dyes, and excellent adsorptive capability to MO dye.

scholarly journals Mechanism to Enhance Visible-light-driven Photocatalysis of Flower-like Composite of AgI Nanoparticle/BiOI Nanosheet

2020 ◽  
Author(s):  
Jaafar Hasan ◽  
Gaowei Ouyang ◽  
Jing Wang ◽  
Haidi Li ◽  
Guangdong Tian ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Diffuse Reflectance ◽  
Photocatalytic Performance ◽  
Organic Dyes ◽  
Absorption Properties ◽  
Exchange Method ◽  
Visible Light Driven ◽  
Bioi Nanosheets ◽  
Coomassie Brilliant

Nanosheet BiOI materials were prepared by using the precipitation-hydrothermal method. Moreover, nanoparticle AgI/BiOI nanosheet composites were prepared using an ion-exchange method and by controlling the amount of BiOI. The phase composition, optical morphology, and absorption properties of the samples were determined using XRD, SEM, XPS, TEM, HRTEM, and UV-Vis diffuse reflectance. Organic dyes, such as methyl orange (MO) and Coomassie brilliant blue R-250 (CBB), were used to check the photocatalytic performance of the composites when undergoing photodegradation in visible light. The prepared composites had high purity, and the AgI nanoparticles were evenly loaded on the flower-like BiOI nanosheets, and both can absorb the visible light. The photocatalytic activity of sole BiOI or AgI was poor, whereas that of the composites was much better. The composite with 50% AgI exhibited the best photocatalytic activity because of the formation of a p-n heterojunction, which promotes the separation of photogenerated carriers and makes AgI stable under visible-light irradiation.

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