Sn-doped BiOI assisted the excellent photocatalytic performance of multi-shelled ZnO microspheres under simulated sunlight

Chemosphere ◽  
2021 ◽  
pp. 133309
Author(s):  
Linfeng Zhang ◽  
Xianghui Wu ◽  
Jianding Li
Keyword(s):  
Photocatalytic Performance ◽  
Simulated Sunlight

Preparation and Photocatalytic Performance of SO42-/CeO2-TiO2/HTLC

2014 ◽  
Vol 1073-1076 ◽  
pp. 3-7
Author(s):  
Ru Jun Xue ◽  
Chun Yang Chen ◽  
Shu Fen Cheng ◽  
Min Zhou
Keyword(s):  
Methyl Orange ◽  
Synergistic Effect ◽  
Visible Light ◽  
Active Component ◽  
Photocatalytic Performance ◽  
Experimental Results ◽  
Catalyst Precursor ◽  
Simulated Sunlight ◽  
Absorption Intensity ◽  
Decolorization Rate

Catalyst precursor was prepared with the Fe-Al hydrotalcite as the support, Ce-doped TiO2 as the active component. Then SO42-/CeO2-TiO2/HTLC photocatalyst was obtained by SO42- -modification with soak method. Catalysts were characterized by means of XRD, SEM-EDS and UV-Vis DRS. With methyl orange as model pollutant, the photocatalytic performance of the catalysts was determined. Experimental results showed that the absorption intensity for visible light of the CeO2-TiO2 particle was stronger than that of TiO2 particle; moreover there was a synergistic effect between SO42- and CeO2-TiO2/HTLC, thus the absorption intensity for visible light of SO42-/CeO2-TiO2/HTLC photocatalyst was enhanced further. The decolorization rate for methyl orange of modified SO42-/15%(CeO2-TiO2)/HTLC photocatalyst reached 93% after irradiation under simulated sunlight for 2 hours.

Construction of LZU1@WO3 heterojunction photocatalysts: enhanced photocatalytic performance and mechanism insight

2021 ◽  
Vol 45 (36) ◽  
pp. 17025-17036
Author(s):  
Simin Shang ◽  
Huaizhi Yang ◽  
Dajun Shi ◽  
Bowen Dong ◽  
Heling Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Hybrid Materials ◽  
Photocatalytic Performance ◽  
Production Capacity ◽  
Simulated Sunlight ◽  
Composite Photocatalysts ◽  
Performance And Mechanism

Our well-designed nano-WO3@LZU1 composite photocatalysts were fully characterized. Under simulated sunlight, the hybrid materials showed much higher photocatalytic activity for BBR degradation and MB degradation than WO3 or LZU1, and improved hydrogen production capacity.

scholarly journals Preparation ofBiFeO3-Graphene Nanocomposites and Their Enhanced Photocatalytic Activities

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
J. F. Dai ◽  
T. Xian ◽  
L. J. Di ◽  
H. Yang
Keyword(s):  
Photocatalytic Performance ◽  
Ethanol Solution ◽  
Oh Radicals ◽  
Simulated Sunlight ◽  
Sunlight Irradiation ◽  
Graphene Nanocomposites ◽  
Photogenerated Electrons ◽  
Photocatalytic Activities ◽  
Enhanced Yield ◽  
Efficient Transfer

BiFeO3nanoparticles were prepared via a polyacrylamide gel route. BiFeO3-graphene nanocomposites were fabricated by mixing BiFeO3nanoparticles and graphene into absolute ethanol solution followed by thermal drying. The TEM observation demonstrates that the BiFeO3nanoparticles are well anchored onto graphene sheets. The photocatalytic activities of the as-prepared samples were evaluated by the degradation of methyl orange (MO) under simulated sunlight irradiation. Compared to bare BiFeO3nanoparticles, BiFeO3-graphene nanocomposites exhibit enhanced photocatalytic activity. The outstanding photocatalytic performance is mainly ascribed to the efficient transfer of photogenerated electrons from BiFeO3to graphene, thus leading to an increased availability of h+for the photocatalytic reaction. In addition, hydroxyl (·OH) radicals were detected by the photoluminescence technique using terephthalic acid as a probe molecule and are found to be produced on the irradiated BiFeO3and BiFeO3-graphene nanocomposites; in particular, an enhanced yield is observed for the latter.

scholarly journals Growth Process and CQDs-modified Bi4Ti3O12 Square Plates with Enhanced Photocatalytic Performance

Micromachines ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 66 ◽  
Author(s):  
Xinxin Zhao ◽  
Hua Yang ◽  
Ziming Cui ◽  
Xiangxian Wang ◽  
Zao Yi
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Growth Process ◽  
Photocatalytic Performance ◽  
Simulated Sunlight ◽  
Hydrothermal Route ◽  
Electron Hole ◽  
X Ray ◽  
Photocurrent Spectroscopy

Bi4Ti3O12 square plates were synthesized via a hydrothermal route, and their growth process was systematically investigated. Carbon quantum dots (CQDs) were prepared using glucose as the carbon source, which were then assembled on the surface of Bi4Ti3O12 square plates via a hydrothermal route with the aim of enhancing the photocatalytic performance. XRD (X-ray powder diffraction), SEM (scanning electron microscopy), TEM (transmission electron microscopy), UV-vis DRS (diffuse reflectance spectroscopy), XPS (X-ray photoelectron spectroscopy), FTIR (Fourier transform infrared spectroscopy), PL (photoluminescence) spectroscopy, EIS (electrochemical impedance spectroscopy) and photocurrent spectroscopy were used to systematically characterize the as-prepared samples. It is demonstrated that the decoration of CQDs on Bi4Ti3O12 plates leads to an increased visible light absorption, slightly increased bandgap, increased photocurrent density, decreased charge-transfer resistance, and decreased PL intensity. Simulated sunlight and visible light were separately used as a light source to evaluate the photocatalytic activity of the samples toward the degradation of RhB in aqueous solution. Under both simulated sunlight and visible light irradiation, CQDs@Bi4Ti3O12 composites with an appropriate amount of CQDs exhibit obviously enhanced photocatalytic performance. However, the decoration of excessive CQDs gives rise to a decrease in the photocatalytic activity. The enhanced photocatalytic activity of CQDs-modified Bi4Ti3O12 can be attributed to the following reasons: (1) The electron transfer between Bi4Ti3O12 and CQDs promotes an efficient separation of photogenerated electron/hole pairs in Bi4Ti3O12; (2) the up-conversion photoluminescence emitted from CQDs could induce the generation of additional electron/hole pairs in Bi4Ti3O12; and (3) the photoexcited electrons in CQDs could participate in the photocatalytic reactions.

Synthesis of CdS/Nd2S3 nanocomposite with enhanced photocatalytic performance under simulated sunlight irradiation

2020 ◽  
Vol 189 ◽  
pp. 349-356
Author(s):  
Haihua Yang ◽  
Chaohua Dai ◽  
Lingjie Jiang ◽  
Li Zhang ◽  
Jianhui Yan
Keyword(s):  
Photocatalytic Performance ◽  
Simulated Sunlight ◽  
Sunlight Irradiation

Controllable fabrication of α-Ag2WO4 nanorod-clusters with superior simulated sunlight photocatalytic performance

2019 ◽  
Vol 6 (1) ◽  
pp. 209-219 ◽  
Author(s):  
Bing-Yu Wang ◽  
Guo-Ying Zhang ◽  
Guan-Wei Cui ◽  
Yan-Yan Xu ◽  
Yue Liu ◽  
...  
Keyword(s):  
Photocatalytic Performance ◽  
Raw Materials ◽  
Molar Ratio ◽  
Simulated Sunlight ◽  
Controllable Fabrication

This work presents the greatly boosted photoactivity of α-Ag2WO4 nanorod-clusters fabricated by adjusting the molar ratio of raw materials.

Synthesis and photocatalytic performance of Bi2S3/SnS2 heterojunction

2017 ◽  
Vol 10 (02) ◽  
pp. 1750004 ◽  
Author(s):  
LiZhen Ren ◽  
DongEn Zhang ◽  
Xiao Yun Hao ◽  
Xin Xiao ◽  
Jun Yan Gong ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Diffuse Reflectance ◽  
Photocatalytic Performance ◽  
Diffuse Reflectance Spectroscopy ◽  
Reflectance Spectroscopy ◽  
Simulated Sunlight ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

Bi2S3/SnS2 heterostructured photocatalysts were synthesized from BiOI, SnCl[Formula: see text]5H2O and NH2CSNH2 using an economic and simple hydrothermal method. The as-synthesized samples were characterized by X-ray diffraction, scanning electron microscopy and ultraviolet-visible diffuse reflectance spectroscopy. The photodegradation activities of the Bi2S3/SnS2 heterostructured photocatalysts were estimated by degrading rhodamine B under simulated sunlight supplied by irradiating with a 350[Formula: see text]W Xe lamp. Bi2S3/SnS2 photocatalysts were prepared using varying percentages of Bi2S3. The sample containing 13% Bi2S3 had the most efficient photocatalyst performance among the tested samples. The photocatalytic mechanism involves heterojunctions formed in the Bi2S3/SnS2, which promoted effective separation of photoinduced electrons and holes.

Facile room-temperature precipitation strategy for Ag2O/Bi2WO6 heterojunction with high simulated sunlight photocatalytic performance via bi-directed electron migration mechanism

RSC Advances ◽  
2015 ◽  
Vol 5 (41) ◽  
pp. 32333-32342 ◽  
Author(s):  
Chun-Mei Liu ◽  
Jing-Wang Liu ◽  
Guo-Ying Zhang ◽  
Jing-Bo Zhang ◽  
Qing-Song Wu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Room Temperature ◽  
Photocatalytic Performance ◽  
Simulated Sunlight ◽  
Charge Migration ◽  
Migration Mechanism ◽  
Electron Migration

A facilely solution precipitated Ag2O/Bi2WO6 composite exhibited greatly improved photocatalytic activity due to broadened photoresponse and multi-path charge migration at the interface.

Ultra-thin TiO2 sheets with rich surface disorders for enhanced photocatalytic performance under simulated sunlight

2018 ◽  
Vol 745 ◽  
pp. 26-32 ◽  
Author(s):  
Le Wang ◽  
Dapeng Wu ◽  
Zheng Guo ◽  
Jingjing Yan ◽  
Yuansen Hu ◽  
...  
Keyword(s):  
Photocatalytic Performance ◽  
Simulated Sunlight
Sign in / Sign up

Export Citation Format

Share Document