Preparation of Z-scheme AgI/Bi5O7I plate with high visible light photocatalytic performance by phase transition and morphological transformation of BiOI microspheres at room temperature

2018 ◽  
Vol 47 (33) ◽  
pp. 11420-11428 ◽  
Author(s):  
Nan Yang ◽  
Xiang Lv ◽  
Suting Zhong ◽  
Danlin Qian ◽  
Sujuan Han ◽  
...  
Keyword(s):  
Phase Transition ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Room Temperature ◽  
Photocatalytic Performance ◽  
Transformation Process ◽  
High Photocatalytic Activity ◽  
Morphological Transformation ◽  
Visible Light Photocatalytic

Z-scheme AgI/Bi5O7I plate composite fabricated at room temperature through phase transition and morphological transformation process with high photocatalytic activity.

Room temperature synthesis of Bi4O5I2 and Bi5O7I ultrathin nanosheets with a high visible light photocatalytic performance

2016 ◽  
Vol 45 (18) ◽  
pp. 7720-7727 ◽  
Author(s):  
Chao Liu ◽  
Xiao-jing Wang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Room Temperature ◽  
Photocatalytic Performance ◽  
Phenol Degradation ◽  
Temperature Synthesis ◽  
Room Temperature Synthesis ◽  
Ultrathin Nanosheets ◽  
Visible Light Photocatalytic ◽  
Facile Route

Bi4O5I2 and Bi5O7I ultrathin nanosheets with a high visible-light photocatalytic activity for phenol degradation are prepared via a facile route at room temperature.

scholarly journals Enhanced Visible-Light Photocatalytic Performance of SAPO-5-Based g-C3N4 Composite for Rhodamine B (RhB) Degradation

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3948
Author(s):  
Lingfang Qiu ◽  
Zhiwei Zhou ◽  
Mengfan Ma ◽  
Ping Li ◽  
Jinyong Lu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Redox Reactions ◽  
Photocatalytic Performance ◽  
Dye Degradation ◽  
Thermal Polymerization ◽  
Light Illumination ◽  
Electron Hole ◽  
Visible Light Illumination ◽  
Visible Light Photocatalytic

Novel visible-light responded aluminosilicophosphate-5 (SAPO-5)/g-C3N4 composite has been easily constructed by thermal polymerization for the mixture of SAPO-5, NH4Cl, and dicyandiamide. The photocatalytic activity of SAPO-5/g-C3N4 is evaluated by degrading RhB (30 mg/L) under visible light illumination (λ > 420 nm). The effects of SAPO-5 incorporation proportion and initial RhB concentration on the photocatalytic performance have been discussed in detail. The optimized SAPO-5/g-C3N4 composite shows promising degradation efficiency which is 40.6% higher than that of pure g-C3N4. The degradation rate improves from 0.007 min−1 to 0.022 min−1, which is a comparable photocatalytic performance compared with other g-C3N4-based heterojunctions for dye degradation. The migration of photo-induced electrons from g-C3N4 to the Al site of SAPO-5 should promote the photo-induced electron-hole pairs separation rate of g-C3N4 efficiently. Furthermore, the redox reactions for RhB degradation occur on the photo-induced holes in the g-C3N4 and Al sites in SAPO-5, respectively. This achievement not only improves the photocatalytic activity of g-C3N4 efficiently, but also broadens the application of SAPOs in the photocatalytic field.

Quantum dots in photocatalytic applications: efficiently enhancing visible light photocatalytic activity by integrating CdO quantum dots as sensitizers

2017 ◽  
Vol 19 (36) ◽  
pp. 24915-24927 ◽  
Author(s):  
A. H. Reshak
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Optical Band Gap ◽  
Visible Light Active ◽  
Photocatalytic Applications ◽  
Visible Light Photocatalytic

The amalgamation of a wide optical band gap photocatalyst with visible-light-active CdO quantum dots (QDs) as sensitizers is one of the most efficient ways to improve photocatalytic performance under visible light irradiation.

scholarly journals Temperature-Program Assisted Synthesis of Novel Z-Scheme CuBi2O4/β-Bi2O3 Composite with Enhanced Visible Light Photocatalytic Performance

Nanomaterials ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 579 ◽  
Author(s):  
Xiaojuan Chen ◽  
Ning Li ◽  
Runliang Zhu ◽  
Shuai Li ◽  
Chunmo Yu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Diclofenac Sodium ◽  
Mass Ratio ◽  
Absorption Properties ◽  
Calcination Temperatures ◽  
Composite Photocatalysts ◽  
Temperature Programmed ◽  
Visible Light Photocatalytic

Novel Z-Scheme CuBi2O4/β-Bi2O3 composite photocatalysts with different mass ratios and calcination temperatures were firstly synthesized by the hydrothermal method following a temperature-programmed process. The morphology, crystal structure, and light absorption properties of the as-prepared samples were systematically characterized, and the composites exhibited enhanced photocatalytic activity toward diclofenac sodium (DS) degradation compared with CuBi2O4 and β-Bi2O3 under visible light irradiation. The optimal photocatalytic efficiency of the composite, achieved at the mass ratio of CuBi2O4 and β-Bi2O3 of 1:2.25 and the calcination temperature of 600 °C is 92.17%. After the seventh recycling of the composite, the degradation of DS can still reach 82.95%. The enhanced photocatalytic activity of CuBi2O4/β-Bi2O3 is closely related to OH•, h+ and O2•−, and the photocatalytic mechanism of CuBi2O4/β-Bi2O3 can be explained by the Z-Scheme theory.

Preparation of p-p heterojunction and its photocatalytic performance by 3D NiS supported by 2D lamellar CuMn-LDO

2021 ◽  
Author(s):  
Ye Liu ◽  
Jing Xu ◽  
Zhenlu Liu ◽  
Xinyu Liu ◽  
Shengming Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
High Photocatalytic Activity

Ni-based nanomaterials have attracted extensive concern as photocatalysts thanks to their high photocatalytic activity and non-toxicity. In this study, a novel visible light induced photocatalyst CuMn-LDO/NiS (CMS) was successfully synthesized...

scholarly journals Ag2O-decorated electrospun BiVO4 nanofibers with enhanced photocatalytic performance

RSC Advances ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 6114-6120 ◽  
Author(s):  
Junpeng Ren ◽  
Yongyong Zhu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Cycling Stability ◽  
Photocatalytic Efficiency ◽  
Heterogeneous Structures ◽  
Good Cycling Stability ◽  
Visible Light Photocatalytic

Ag2O doped electrospun BiVO4 nanofibers with p–n junction heterogeneous structures show enhanced photocatalytic activity under visible light (photocatalytic efficiency: 98.47% within 100 min) and good cycling stability.

scholarly journals Enhanced visible-light photocatalytic activity of anatase-rutile mixed-phase nano-size powder given by high-temperature heat treatment

2020 ◽  
Vol 7 (1) ◽  
pp. 191539 ◽  
Author(s):  
Takamasa Ishigaki ◽  
Yusuke Nakada ◽  
Naoki Tarutani ◽  
Tetsuo Uchikoshi ◽  
Yoshihiro Tsujimoto ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Photocatalytic Activity ◽  
High Temperature ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
High Temperature Heat Treatment ◽  
Heat Treated ◽  
Temperature Heating ◽  
Nano Size ◽  
Visible Light Photocatalytic

Nano-size EVONIK AEROXIDE ® P25 titanium dioxide, TiO 2 , powder was heat-treated at temperatures, 700–900°C, in air. An X-ray diffraction study showed that the P25 powder is composed of approximately 20 and approximately 80 mass% of rutile and anatase phases, respectively. It was also shown that the transformation from anatase to rutile induced by high-temperature heat treatment was almost completed at 750°C, whereas a small amount (less than 3 mass%) of anatase phase was still left even in the powder heat-treated at 900°C. The transformation behaviour was consistent with results obtained by Raman scattering spectroscopy. Raman experiments also indicated that high-temperature heating induced the formation of oxide ion vacancies. Powders were dispersed in methyl orange (MO) aqueous solution, and the bleach rate of MO was measured to evaluate photocatalytic activity under ultraviolet (UV)- and visible-light irradiation. After the heat treatment, the UV-light photocatalytic performance sharply deteriorated. Interestingly, visible-light photocatalytic activity was enhanced by high-temperature heating and reached the highest performance for an 800°C-heated sample, indicating that the P25 powder obtained high visible-light photocatalytic performance after heat treatment. Even after 900°C heat treatment, the photocatalytic performance was higher than that of as-received powder. Enhancement of photocatalytic activities was discussed in relation to visible light absorption and charge carrier transfer.

Facile synthesis and enhanced visible-light photocatalytic activity of graphitic carbon nitride decorated with ultrafine Fe2O3 nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (112) ◽  
pp. 92033-92041 ◽  
Author(s):  
Xin Liu ◽  
Ailing Jin ◽  
Yushuai Jia ◽  
Junzhe Jiang ◽  
Na Hu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Precipitation Method ◽  
Fe2o3 Nanoparticles ◽  
Facile Synthesis ◽  
Composite Photocatalyst ◽  
Visible Light Photocatalytic

An efficient composite photocatalyst fabricated by dispersing ultrafine Fe2O3 nanocrystals onto g-C3N4 nanosheets via a facile deposition-precipitation method shows significantly enhanced photocatalytic performance under visible light irradiation.

Single-crystalline Bi19Br3S27 nanorods with an efficiently improved photocatalytic activity

CrystEngComm ◽  
2015 ◽  
Vol 17 (32) ◽  
pp. 6120-6126 ◽  
Author(s):  
Yajie Chen ◽  
Guohui Tian ◽  
Tong Feng ◽  
Wei Zhou ◽  
Zhiyu Ren ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Single Crystalline ◽  
Visible Light Photocatalytic

Single-crystalline Bi19Br3S27 nanorods were prepared and showed excellent visible-light photocatalytic performance.

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