scholarly journals Type-II CdS nanoparticle–ZnO nanowire heterostructure arrays fabricated by a solution process: enhanced photocatalytic activity

2008 ◽  
pp. 4585 ◽  
Author(s):  
Youngjo Tak ◽  
Hyeyoung Kim ◽  
Dongwook Lee ◽  
Kijung Yong
Keyword(s):  
Photocatalytic Activity ◽  
Solution Process ◽  
Type Ii ◽  
Zno Nanowire ◽  
Cds Nanoparticle

scholarly journals In Situ Construction of a MgSn(OH)6 Perovskite/SnO2 Type-II Heterojunction: A Highly Efficient Photocatalyst towards Photodegradation of Tetracycline

Nanomaterials ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 53 ◽  
Author(s):  
Yuanyuan Li ◽  
Xiaofang Tian ◽  
Yaoqiong Wang ◽  
Qimei Yang ◽  
Yue Diao ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ultraviolet Irradiation ◽  
Photocatalytic Oxidation ◽  
Photocatalytic Performance ◽  
Diffuse Reflectance Spectroscopy ◽  
Active Species ◽  
Growth Strategy ◽  
Type Ii ◽  
Highly Efficient

Using solar energy to remove antibiotics from aqueous environments via photocatalysis is highly desirable. In this work, a novel type-II heterojunction photocatalyst, MgSn(OH)6/SnO2, was successfully prepared via a facile one-pot in situ hydrothermal method at 220 °C for 24 h. The obtained heterojunctions were characterized via powder X-ray diffraction, Fourier-transform infrared spectroscopy, transmission electron microscopy, and ultraviolet-visible diffuse reflectance spectroscopy. The photocatalytic performance was evaluated for photodegradation of tetracycline solution under ultraviolet irradiation. The initial concentration of tetracycline solution was set to be 20 mg/L. The prepared heterojunctions exhibited superior photocatalytic activity compared with the parent MgSn(OH)6 and SnO2 compounds. Among them, the obtained MgSn(OH)6/SnO2 heterojunction with MgCl2·6H2O:SnCl4·5H2O = 4:5.2 (mmol) displayed the highest photocatalytic performance and the photodegradation efficiency conversion of 91% could be reached after 60 min under ultraviolet irradiation. The prepared heterojunction maintained its performance after four successive cycles of use. Active species trapping experiments demonstrated that holes were the dominant active species. Hydroxyl radicals and superoxide ions had minor effects on the photocatalytic oxidation of tetracycline. Photoelectrochemical measurements were used to investigate the photocatalytic mechanism. The enhancement of photocatalytic activity could be assigned to the formation of a type-II junction photocatalytic system, which was beneficial for efficient transfer and separation of photogenerated electrons and holes. This research provides an in situ growth strategy for the design of highly efficient photocatalysts for environmental restoration.

Photocatalytic Activity Suppression of CdS Nanoparticle-Decorated Cu2O Octahedra and Rhombic Dodecahedra

2018 ◽  
Vol 122 (24) ◽  
pp. 12944-12950 ◽  
Author(s):  
Jing-Yi Huang ◽  
Pei-Lun Hsieh ◽  
Gollapally Naresh ◽  
Hsin-Yi Tsai ◽  
Michael H. Huang
Keyword(s):  
Photocatalytic Activity ◽  
Cds Nanoparticle ◽  
Rhombic Dodecahedra

One-step in situ synthesis of BiOCl/(BiO)2CO3 composite photocatalysts with exposed high-energy {001} facets

CrystEngComm ◽  
2018 ◽  
Vol 20 (48) ◽  
pp. 7838-7850 ◽  
Author(s):  
Yingying Chen ◽  
Yan Zhou ◽  
Qimei Dong ◽  
Hanming Ding
Keyword(s):  
Photocatalytic Activity ◽  
Synergistic Effect ◽  
Solvothermal Method ◽  
High Energy ◽  
In Situ Synthesis ◽  
Band Alignment ◽  
Type Ii ◽  
Composite Photocatalysts ◽  
One Step

BiOCl/(BiO)2CO3 composites with reactive exposed {001} facets have been synthesized by a one-step in situ solvothermal method. The synergistic effect of type-II band alignment and exposed high-energy facets enhances photocatalytic activity.

Facile preparation of branched hierarchical ZnO nanowire arrays with enhanced photocatalytic activity: A photodegradation kinetic model

2018 ◽  
Vol 435 ◽  
pp. 108-116 ◽  
Author(s):  
M. Ebrahimi ◽  
S. Yousefzadeh ◽  
M. Samadi ◽  
Chunyang Dong ◽  
Jinlong Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Kinetic Model ◽  
Nanowire Arrays ◽  
Zno Nanowire ◽  
Zno Nanowire Arrays ◽  
Facile Preparation

Novel dual-petal nanostructured WS2@MoS2 with enhanced photocatalytic performance and a comprehensive first-principles investigation

2015 ◽  
Vol 3 (40) ◽  
pp. 20225-20235 ◽  
Author(s):  
Honglin Li ◽  
Ke Yu ◽  
Chao Li ◽  
Bangjun Guo ◽  
Xiang Lei ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Composite Structure ◽  
First Principles ◽  
Energy Band ◽  
Photocatalytic Performance ◽  
First Principles Calculation ◽  
Type Ii

A prominent enhanced photocatalytic activity of the WS2@MoS2 heterojunction was obtained. The first-principles calculation showed that a well-defined type-II staggered energy band was formed for the composite structure.

Visible light-assisted photocatalytic mineralization of diuron pesticide using novel type II CuS/Bi2W2O9 heterojunctions with a hierarchical microspherical structure

2018 ◽  
Vol 42 (1) ◽  
pp. 281-292 ◽  
Author(s):  
Yagna Prakash Bhoi ◽  
Chinmaya Behera ◽  
Dibyananda Majhi ◽  
Sk. Md. Equeenuddin ◽  
B. G. Mishra
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Type Ii ◽  
Excellent Photocatalytic Activity

A hierarchical CuS/Bi2W2O9 heterojunction photocatalyst exhibits excellent photocatalytic activity for the degradation of diuron achieving 95% mineralization within 3 h of irradiation.

scholarly journals Facile synthesis of a novel WO3/Ag2MoO4 particles-on-plate staggered type II heterojunction with improved visible-light photocatalytic activity in removing environmental pollutants

RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 34804-34813 ◽  
Author(s):  
Huanli Wang ◽  
Yafei Wang ◽  
Ailing Xu ◽  
Qipeng Yang ◽  
Fujun Tao ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Organic Pollutants ◽  
Environmental Pollutants ◽  
Type Ii ◽  
Facile Synthesis ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

A novel WO3/Ag2MoO4 heterojunction was synthesized and it showed excellent photodegradation performance and stability for several sorts of organic pollutants.

Converting type II AgBr/VO into ternary Z scheme photocatalyst via coupling with phosphorus doped g-C3N4 for enhanced photocatalytic activity

2019 ◽  
Vol 227 ◽  
pp. 115692 ◽  
Author(s):  
Pankaj Raizada ◽  
Anita Sudhaik ◽  
Pardeep Singh ◽  
Ahmad Hosseini-Bandegharaei ◽  
Pankaj Thakur
Keyword(s):  
Photocatalytic Activity ◽  
Type Ii ◽  
Phosphorus Doped
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