In situ loading of CuS nanoflowers on rutile TiO2 surface and their improved photocatalytic performance

2016 ◽  
Vol 370 ◽  
pp. 312-319 ◽  
Author(s):  
Y.Y. Lu ◽  
Y.Y. Zhang ◽  
J. Zhang ◽  
Y. Shi ◽  
Z. Li ◽  
...  
Keyword(s):  
Photocatalytic Performance ◽  
Tio2 Surface ◽  
Rutile Tio2

In-situ construction of direct Z-scheme AgBr/α-Ag2WO4 heterojunction with promoted spatial charge migration and photocatalytic performance

2021 ◽  
Author(s):  
Xiao-Ya Zhai ◽  
Yifan Zhao ◽  
Guo-Ying Zhang ◽  
Bing-Yu Wang ◽  
Qi-Yun Mao
Keyword(s):  
Anion Exchange ◽  
Large Scale ◽  
Room Temperature ◽  
Photocatalytic Performance ◽  
Charge Migration ◽  
Time Saving ◽  
Spatial Charge ◽  
Construction Strategy ◽  
Large Scale Synthesis

In the work, a direct Z-scheme AgBr/α-Ag2WO4 heterojunction was prepared by in-situ anion exchange at room temperature. The construction strategy is energy- and time-saving for large scale synthesis. The α-Ag2WO4...

In situ construction of WO3/g-C3N4 composite photocatalyst with 2D–2D heterostructure for enhanced visible light photocatalytic performance

2019 ◽  
Vol 43 (44) ◽  
pp. 17416-17422 ◽  
Author(s):  
Huaqiang Zhuang ◽  
Zhenping Cai ◽  
Wentao Xu ◽  
Mianli Huang ◽  
Xiaobin Liu
Keyword(s):  
Visible Light ◽  
Photocatalytic Performance ◽  
Composite Photocatalyst ◽  
Preparation Strategy ◽  
Visible Light Photocatalytic

A WO3/g-C3N4 composite photocatalyst with 2D–2D heterostructure was designed and constructed by an in situ preparation strategy.

A PW12/Ag functionalized mesoporous silica-coated magnetic Fe3O4 core–shell composite as an efficient and recyclable photocatalyst

2021 ◽  
Author(s):  
Pan-Feng Wu ◽  
Qi Xue ◽  
Tian-Yu Wang ◽  
Shan-Jian Li ◽  
Gao-Peng Li ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Photocatalytic Performance ◽  
Core Shell ◽  
Deposition Method ◽  
Functionalized Mesoporous Silica ◽  
Recyclable Photocatalyst ◽  
Shell Composite ◽  
Magnetic Fe3o4 ◽  
Fe3o4 Core

The PW12 and Ag NP functionalized Fe3O4@SiO2@mSiO2-PW12/Ag photocatalyst was assembled via an in situ photoreduction deposition method, displaying highly efficient photocatalytic performance for photodegradation of MO and photoreduction of Cr2O72−.

Ag-TiO2 Nanocomposites: visible or solar light driven plasmonic photocatalysis?

2021 ◽  
Vol 02 ◽  
Author(s):  
Larissa Bach-Toledo ◽  
Patricio G. Peralta-Zamora ◽  
Liziê Daniela Tentler Prola
Keyword(s):  
Photocatalytic Activity ◽  
Solar Radiation ◽  
Noble Metals ◽  
Halogen Lamp ◽  
Tio2 Surface ◽  
Electronic Microscopy ◽  
Visible Radiation ◽  
Artificial Uv ◽  
Positive Effect

Background: The demand for photocatalytic processes assisted by solar radiation has stimulated the upgrading of established systems, as the semiconductor modification with noble metals. Objective: the synthesis, characterization, and photocatalytic activity evaluation of the Ag-TiO2, against sulfamethoxazole molecule, and investigate the significance of the plasmonic phenomenon in Visible (450 - 1000nm) and UV-Vis (315-800 nm) radiation. Methods: Different nanocomposites Ag/TiO2 ratios were synthesized by the deposition of Ag nanoparticles on the TiO2 surface by in-situ photoreduction, and then calcinated at 400°C for 2 hr. The chemical-physical properties of the materials were examined by UV-Vis Diffuse Reflectance (UV-Vis DRS) Scanning Electronic Microscopy (SEM), Transmission Electronic Microscopy (TEM), X-Ray Energy Dispersive Spectroscopy (EDS). The experiments were conducted in a cooled photochemical reactor irradiated by halogen lamp (250W). The degradation of Sulfamethoxazole was monitored by HPLC-DAD. Results: Although the prepared photocatalysts show an intense plasmonic band centered at 500 nm, no photocatalytic activity was observed in the process assisted by artificial visible radiation ( ≥ 450 nm). In processes assisted by artificial UV-Vis radiation, the photolysis rate of the model compound (sulfamethoxazole) was higher than the photocatalytic rate, and in the absence of UV radiation, all the reactions were inhibited. The positive effect of the presence of silver nanoparticles onto the TiO2 surface was only evidenced in studies involving solar radiation. Conclusion: The results suggest the need for a balance between UV and Vis radiation to activate the nanocomposite and perform the sulfamethoxazole degradation.

In Situ Determination of Polaron-Mediated Ultrafast Electron Trapping in Rutile TiO2 Nanorod Photoanodes

2021 ◽  
pp. 10815-10822
Author(s):  
Heng Zhu ◽  
Shuyu Xiao ◽  
Wenguang Tu ◽  
Shicheng Yan ◽  
Tingchao He ◽  
...  
Keyword(s):  
Electron Trapping ◽  
Rutile Tio2 ◽  
Tio2 Nanorod
Sign in / Sign up

Export Citation Format

Share Document