scholarly journals Role of Ag2S coupling on enhancing the visible-light-induced catalytic property of TiO2 nanorod arrays

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Zhengcao Li ◽  
Shan Xiong ◽  
Guojing Wang ◽  
Zheng Xie ◽  
Zhengjun Zhang
Keyword(s):  
Visible Light ◽  
Catalytic Property ◽  
Nanorod Arrays ◽  
Tio2 Nanorod ◽  
Tio2 Nanorod Arrays

Facile preparation of flake-like blue TiO2 nanorod arrays for efficient visible light photocatalyst

2019 ◽  
Vol 45 (8) ◽  
pp. 9754-9760 ◽  
Author(s):  
Nan Jiang ◽  
Yi Du ◽  
Shiquan Liu ◽  
Minxing Du ◽  
Yibing Feng ◽  
...  
Keyword(s):  
Visible Light ◽  
Nanorod Arrays ◽  
Visible Light Photocatalyst ◽  
Tio2 Nanorod ◽  
Tio2 Nanorod Arrays ◽  
Facile Preparation

UV and visible light synergetic photodegradation using rutile TiO2 nanorod arrays based on a p–n Junction

2017 ◽  
Vol 46 (13) ◽  
pp. 4296-4302 ◽  
Author(s):  
Tao Ji ◽  
Ze Cui ◽  
Wenlong Zhang ◽  
Yunjiu Cao ◽  
Yongfang Zhang ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Performance ◽  
Nanorod Arrays ◽  
Rutile Tio2 ◽  
Tio2 Nanorod ◽  
Tio2 Nanorod Arrays ◽  
Junction Device

The enhanced photocatalytic performance of a TiO2-based multi-junction device is ascribed to a photovoltage generated in the junction, promoting the carriers separation.

scholarly journals A Facile and Controllable Vapor-Phase Hydrothermal Approach to Anionic S2−-doped TiO2 Nanorod Arrays with Enhanced Photoelectrochemical and Photocatalytic Activity

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1776
Author(s):  
Hai Yu ◽  
Miao Zhang ◽  
Yanfen Wang ◽  
Haocheng Yang ◽  
Yanmei Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Vapor Phase ◽  
Sulfur Source ◽  
Nanorod Arrays ◽  
Doped Tio2 ◽  
Energy Devices ◽  
Bare Tio2 ◽  
Tio2 Nanorod ◽  
Tio2 Nanorod Arrays

Anionic S2−-doped TiO2 nanorod arrays (S2−-TiO2) were synthesized by a facile and controllable vapor-phase hydrothermal (VPH) approach based on the sulfur source of H2S gas. After the VPH treatment of TiO2 nanorod arrays (TNA), the isolated O2− species replaces the S2− ion in TiO2 (TiO2−xSx). The structural, morphological, optical, compositional, photocatalytic and photoelectrochemical (PEC) properties of the obtained samples were investigated in detail. It was found that S2−-TiO2 can enhance the separation rate of electron–hole pairs, improve the absorption of visible light, and augment the photocatalytic and photoelectrochemical properties. Anionic S2− doping can significantly adjust the absorption cut-off wavelength (409.5–542.5 nm) and shorten the bandgap (3.05-2.29 eV) of TNA. For the degradation of methylene orange (MO) under mercury lamp light, the 0.24 At%S2−-TiO2 (0.24S2−-TiO2) sample exhibited the best photogradation efficiency of 73% in 180 min compared to bare TiO2 (46%). The 0.24S2−-TiO2 showed the highest photocurrent of 10.6 μA/cm2, which was 1.73 times higher than that of bare TiO2 (6.1μA/cm2). The results confirmed that the visible light absorption, photocurrent and photocatalytic activity optimization of TNA are closely related not only to anionic S2−-doped but also different ratios of anionic S2−-doped. It is noteworthy that the VPH approach is very promising for applications in low cost and highly efficient ion doping into nanomaterials for energy devices.

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