Greatly enhanced photocatalytic activity by organic flexible piezoelectric PVDF induced spatial electric field

2017 ◽  
Vol 7 (23) ◽  
pp. 5594-5601 ◽  
Author(s):  
Baoying Dai ◽  
Hengming Huang ◽  
Wei Wang ◽  
Yukai Chen ◽  
Chunhua Lu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Electric Field ◽  
Charge Separation ◽  
High Photocatalytic Activity ◽  
Efficient Charge ◽  
Vital Factor

Efficient charge separation accelerated by a spatial electric field is a vital factor for semiconductor photocatalysts to achieve high photocatalytic activity.

Enhancing visible light photocatalytic activity of bismuth vanadate with the loading of zinc oxide

2019 ◽  
Vol 12 (01) ◽  
pp. 1850110 ◽  
Author(s):  
Mengjun Liang ◽  
Lu Chen ◽  
Zhiyuan Yang ◽  
Zhen Zeng ◽  
Shuijin Yang
Keyword(s):  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Specific Surface ◽  
Visible Light Irradiation ◽  
Charge Separation ◽  
Facile Hydrothermal Method ◽  
Excellent Photocatalytic Activity ◽  
Efficient Charge ◽  
Visible Light Photocatalytic

ZnO/Bi4V2O[Formula: see text] nanocomposites were prepared via a facile hydrothermal method by loading different amounts of ZnO onto the surface of Bi4V2O[Formula: see text]. The resulting ZnO/Bi4V2O[Formula: see text] composites showed excellent photocatalytic activity than that of pure ZnO under visible light irradiation. When the ratio of ZnO to Bi4V2O[Formula: see text] was 1:1 (ZB2), the photocatalytic activity was best, which could degrade RhB almost completely within 30[Formula: see text]min. The enhanced photocatalytic activity of ZnO/Bi4V2O[Formula: see text] composites could be mainly ascribed to the efficient charge separation and the increased specific surface area. Based on the experimental and bandgap calculations, a possible photocatalytic mechanism was proposed.

K2TiO(C2O4)2-mediated synthesis of rutile TiO2 mesocrystals and their ability to assist photodegradation of sulfosalicylic acid in water

RSC Advances ◽  
2014 ◽  
Vol 4 (90) ◽  
pp. 49280-49286 ◽  
Author(s):  
Lu-Lu Lai ◽  
Li-Liang Huang ◽  
Jin-Ming Wu
Keyword(s):  
Photocatalytic Activity ◽  
Low Temperature ◽  
Specific Surface ◽  
Charge Separation ◽  
Atmospheric Pressure ◽  
High Photocatalytic Activity ◽  
Large Specific Surface Area ◽  
Sulfosalicylic Acid ◽  
Temperature Solution ◽  
Solution Route

Flower-like rutile TiO2 mesocrystals were synthesized by a K2TiO(C2O4)2-mediated low temperature solution route under the atmospheric pressure, which exhibited high photocatalytic activity because of the large specific surface area as well as the high charge separation rate inherent from the single crystal nature.

scholarly journals Stannic Oxide-Titanium Dioxide Coupled Semiconductor Photocatalyst Loaded with Polyaniline for Enhanced Photocatalytic Oxidation of 1-Octene

2007 ◽  
Vol 2007 ◽  
pp. 1-6 ◽  
Author(s):  
Hadi Nur ◽  
Izan Izwan Misnon ◽  
Lim Kheng Wei
Keyword(s):  
Electrical Conductivity ◽  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Charge Separation ◽  
Photocatalytic Oxidation ◽  
High Photocatalytic Activity ◽  
Stannic Oxide ◽  
Aqueous Hydrogen Peroxide ◽  
Semiconductor Photocatalyst ◽  
Coupled Semiconductor

Stannic oxide-titanium dioxide (SnO2–TiO2) coupled semiconductor photocatalyst loaded with polyaniline (PANI), a conducting polymer, possesses a high photocatalytic activity in oxidation of 1-octene to 1,2-epoxyoctane with aqueous hydrogen peroxide. The photocatalyst was prepared by impregnation ofSnO2and followed by attachment of PANI onto aTiO2powder to give sample PANI-SnO2–TiO2. The electrical conductivity of the system becomes high in the presence of PANI. Enhanced photocatalytic activity was observed in the case of PANI-SnO2–TiO2compared to PANI-TiO2,SnO2–TiO2, andTiO2. A higher photocatalytic activity in the oxidation of 1-octene on PANI-SnO2–TiO2thanSnO2–TiO2, PANI-TiO2, andTiO2can be considered as an evidence of enhanced charge separation of PANI-SnO2–TiO2photocatalyst as confirmed by photoluminescence spectroscopy. It suggests that photoinjected electrons are tunneled fromTiO2toSnO2and then to PANI in order to allow wider separation of excited carriers.

Fabrication of TiO2 nanosheets via Ti3+ doping and Ag3PO4 QD sensitization for highly efficient visible-light photocatalysis

RSC Advances ◽  
2016 ◽  
Vol 6 (68) ◽  
pp. 63984-63990 ◽  
Author(s):  
Lu Ma ◽  
Hong Han ◽  
Lun Pan ◽  
Muhammad Tahir ◽  
Li Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Separation ◽  
Separation Efficiency ◽  
High Photocatalytic Activity ◽  
Visible Light Photocatalysis ◽  
High Charge ◽  
Highly Efficient ◽  
Tio2 Nanosheets ◽  
Charge Separation Efficiency

Ag3PO4 QDs sensitized and Ti3+-doped TiO2 nanosheets were fabricated, and exhibit high charge-separation efficiency and high photocatalytic activity.

scholarly journals Photocatalytic Degradation of Sulfamethoxazole, Nitenpyram and Tetracycline by Composites of Core Shell g-C3N4@ZnO, and ZnO Defects in Aqueous Phase

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2609
Author(s):  
Godfred Kwesi Teye ◽  
Jingyu Huang ◽  
Yi Li ◽  
Ke Li ◽  
Lei Chen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Photocatalytic Activity ◽  
Light Absorption ◽  
Charge Separation ◽  
Absorption Efficiency ◽  
High Photocatalytic Activity ◽  
High Load ◽  
Core Shell ◽  
Visible Light Absorption ◽  
Load Separation

The synthesis of photocatalysts with high charge separation and transfer efficiency are of immense significance in the process of using photocatalysis technology for wastewater treatment. In this study core shell g-C3N4@ZnO, and ZnO defects photocatalysts presented an improved morphology in its characterization using techniques such as SEM, DRS, PL, MS, EIS, and XRD, and enhanced photodegradation of sulfamethoxazole, Nitenpyram and Tetracycline. Different composites were obtained as confirmed by the various characterization techniques studied, including core shell g-C3N4@ZnO, and ZnO defects photocatalyst. The synthesized photocatalysts showed high visible light absorption efficiency within a range of ~655 to 420 nm. Core shell g-C3N4@ZnO, and ZnO defects photocatalysts demonstrated high photocatalytic activity ascribed to high load separation and transition as shown in PL, Photocurrent reaction and EIS. It is understandable that core shell g-C3N4@ZnO, and ZnO defects photocatalysts have been confirmed to be one of the ultimate promising entrants for photocatalyst scheming.

A facile approach to construct BiOI/Bi5O7I composites with heterostructures: efficient charge separation and enhanced photocatalytic activity

RSC Advances ◽  
2015 ◽  
Vol 5 (91) ◽  
pp. 74174-74179 ◽  
Author(s):  
Yaoguang Yu ◽  
Gang Chen ◽  
Xu Wang ◽  
Dechang Jia ◽  
Pengxiao Tang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Charge Separation ◽  
Facile Hydrothermal Method ◽  
Composite Photocatalysts ◽  
Efficient Charge

A series of BiOI/Bi5O7I composite photocatalysts with heterostructures was successfully synthetized through a facile hydrothermal method.

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