Photocatalytic properties of Bi/BiOCl heterojunctions synthesized using an in situ reduction method

2014 ◽  
Vol 38 (10) ◽  
pp. 4913-4921 ◽  
Author(s):  
Jiajia Hu ◽  
Guangqing Xu ◽  
Jinwen Wang ◽  
Jun Lv ◽  
Xinyi Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Reduction Method ◽  
Uv Light ◽  
Photocatalytic Properties ◽  
In Situ Reduction ◽  
Light Activity ◽  
Bi Nanoparticles

Bi nanoparticles on BiOCl nanosheets, synthesized via in situ reduction, enhance the UV light photocatalytic activity and achieve visible light activity.

Hierarchical microspheres: in situ assembly of CdS quantum dots on Cd2SnO4 nanosheets with enhanced visible light photocatalytic properties

RSC Advances ◽  
2015 ◽  
Vol 5 (102) ◽  
pp. 83922-83930 ◽  
Author(s):  
Guimin Zhang ◽  
Zhengyi Fu ◽  
Yucheng Wang ◽  
Hao Wang ◽  
Zheng Xie
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Properties ◽  
Cds Quantum Dots ◽  
Solvothermal Route ◽  
Hierarchical Microspheres ◽  
One Step ◽  
Visible Light Photocatalytic

Hierarchical CdS/Cd2SnO4 microspheres with enhanced photocatalytic activity were successfully synthesized by one step solvothermal route.

scholarly journals Electrochemically Exfoliated Graphite/Cu/Cu2O Composites and Their Photocatalytic Activity

POSITRON ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 34
Author(s):  
Lia Destiarti ◽  
Oktaviardi Bityasmawan Abdillah ◽  
Retno Maharsi ◽  
Octia Floweri ◽  
Ferry Iskandar
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Performance ◽  
Reduction Method ◽  
Degradation Process ◽  
Sem Analysis ◽  
Exfoliated Graphite ◽  
In Situ Reduction ◽  
Microwave Assisted ◽  
Copper Addition

In this work, the photocatalytic performance of electrochemically exfoliated graphite (EG) with low copper addition (≤ 5 wt.%) was studied. Composites of EG/Cu/Cu2O were successfully prepared by microwave-assisted in situ reduction method. FTIR spectra of the samples showed that the main functional groups of graphite were detected in the samples. XRD characterization further proved the presence of EG, Cu, and Cu2O in the samples. The higher proportion of Cu2O presented in the samples prepared with a higher amount of Cu2+. SEM analysis showed that Cu2O/Cu particles were homogeneously deposited on the surface of EG. The composites of EG, Cu, and Cu2O with a varied amount of Cu (1 and 5 wt. %) in EG / Cu2+ mixture were examined as photocatalyst in the degradation process of Rhodamine B (RhB). The photocatalytic degradation of RhB was analysed by observing its decolorization within a set time of irradiation. UV-Vis analysis revealed that the degradation of RhB in EG/Cu/Cu2O A and B for 105 minutes was 26 and 35 %, respectively. The result demonstrates that the sample with a larger amount of Cu2O (sample B, Cu 5 wt.%) shows higher photocatalytic activity in the degradation of RhB.

scholarly journals Visible light photocatalytic activity of TiO2 deposited on activated carbon

2013 ◽  
Vol 11 (3) ◽  
pp. 464-470 ◽  
Author(s):  
Alexander Eliyas ◽  
Ljutzkan Ljutzkanov ◽  
Irina Stambolova ◽  
Vladimir Blaskov ◽  
Sasho Vassilev ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Activated Carbon ◽  
Visible Light ◽  
Uv Light ◽  
Original Method ◽  
Light Illumination ◽  
Porous Texture ◽  
Visible Light Photocatalytic Activity ◽  
Light Activity ◽  
Visible Light Photocatalytic

AbstractAbstract Four photocatalyst samples, prepared from beech sawdust, were synthesized by an original method, combining pyrolysis and impregnation — two of them: TiO2 + activated carbon and other two — only activated carbon. The pyrolysis process has been carried out at two different temperatures — 680°C and 830°C. The prepared samples were characterized by a series of methods — XRD, BET, SEM and DTA/TG. The most important result was achieving visible light photocatalytic activity with an azo dye pollutant for both materials. The TiO2/AC-680°C sample demonstrated higher activity under visible light illumination than the TiO2/AC-830°C sample. The visible light activity was attributed to the active carbon component in the composite materials, which was evidenced by the photocatalytic tests with bare carbon (without any TiO2) manifesting visible light activity. The AC-680°C carbon was superior to the AC-830°C under visible illumination probably due to its higher specific surface area and porous texture. UV-light testing of the photocatalytic activity revealed that the TiO2/AC-680°C sample was higher than that of the TiO2/AC-830°C under polychromatic UV-A illumination (320–400 nm with a maximum at l = 365 nm). The TiO2/AC-680°C sample was also more efficient with the monochromatic UV-C illumination (l = 254 nm). Graphical abstract

In situ construction of the BiOCl/Bi2Ti2O7 heterojunction with enhanced visible-light photocatalytic activity

2019 ◽  
Vol 6 (3) ◽  
pp. 791-798 ◽  
Author(s):  
Siying Niu ◽  
Ruoyu Zhang ◽  
Zhiyu Zhang ◽  
Jiming Zheng ◽  
Yang Jiao ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrothermal Method ◽  
Photocatalytic Properties ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Driven ◽  
Comparable Method ◽  
Visible Light Photocatalytic

Herein, a BiOCl/Bi2Ti2O7 heterojunction was prepared as an efficient visible light-driven photocatalyst through an in situ hydrothermal method, and its photocatalytic properties were investigated via a comparable method.

An Anion-Exchange Strategy to Bi2S3/Bi2O2(OH)(NO3) Heterojunction with Efficient Visible Light Photoreactivity

NANO ◽  
2018 ◽  
Vol 13 (02) ◽  
pp. 1850016 ◽  
Author(s):  
Jiawei Pang ◽  
Shenghuan Su ◽  
Qiaofeng Han
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Uv Light ◽  
Practical Application ◽  
Visible Light Absorption ◽  
Ion Exchange Reaction ◽  
Thiourea Solution ◽  
Excellent Photocatalytic Activity ◽  
Photochemical Stability

As one of the basic bismuth nitrates, Bi2O2(OH)(NO3) (denoted as BION) has been reported to exhibit powerful photodegradation activity for various contaminants. However, pure BION could only be irradiated by UV light due to broad bandgap ([Formula: see text]3.14[Formula: see text]eV). Herein, Bi2S3/Bi2O2(OH)(NO3) (denoted as BS-BION) heterojunction was prepared by an in situ ion exchange reaction between BION and aqueous thiourea solution ([Formula: see text]). The resulting heterojunction possessed good visible light absorption and closely contacted interfaces, which benefited effective separation and transfer of photogenerated charges, thus leading to excellent photocatalytic activity for the degradation of rhodamine B (RhB) under visible light irradiation. Furthermore, the as-prepared heterojunction photocatalyst also presented high photochemical stability, which may be of great significance for practical application.

scholarly journals In-situ synthesis of CN@La(OH)3 nanocomposite for improved the charge separation and enhanced the photocatalytic activity towards Cr(VI) reduction under visible light

2021 ◽  
pp. 100048
Author(s):  
Amanulla Baishnisha ◽  
Krishnan Divakaran ◽  
Vellaichamy Balakumar ◽  
Venkidusamy Sasirekha ◽  
Chandran Meenakshi ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Separation ◽  
In Situ Synthesis
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