scholarly journals Fabrication of Ag2O/WO3 p–n heterojunction composite thin films by magnetron sputtering for visible light photocatalysis

RSC Advances ◽  
2020 ◽  
Vol 10 (27) ◽  
pp. 16187-16195 ◽  
Author(s):  
Young Woong Jo ◽  
Chadrasekhar Loka ◽  
Kee-Sun Lee ◽  
Jae-Hyun Lim
Keyword(s):  
Thin Films ◽  
Magnetron Sputtering ◽  
Visible Light ◽  
Environmental Remediation ◽  
Light Irradiation ◽  
Solar Light ◽  
Visible Light Photocatalysis ◽  
Composite Thin Films ◽  
Solar Light Irradiation ◽  
Catalytically Active

Semiconductor-based nanostructures which are photo-catalytically active upon solar light irradiation were extensively used for environmental remediation due to the potential decomposition of various kinds of pollutants.

Photocatalytic Degradation of Methylene Blue by NiO Thin Films under Solar Light Irradiation

2019 ◽  
Vol 56 ◽  
pp. 152-157 ◽  
Author(s):  
Abdelouahab Noua ◽  
Hichem Farh ◽  
Rebai Guemini ◽  
Oussama Zaoui ◽  
Tarek Diab Ounis ◽  
...  
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Visible Region ◽  
Optical Transmittance ◽  
Dip Coating ◽  
Light Irradiation ◽  
Solar Light ◽  
Solar Light Irradiation

Nickel oxide (NiO) thin films were successfully deposited by sol-gel dip-coating method on glass substrates. The structural, morphological and optical properties in addition to the photocatalytic activity of the prepared films were investigated. The results show that the films have a polycrystalline NiO cubic structure with dense NiO grains and average optical transmittance in the visible region. The photocatalytic properties of the films were studied through the degradation of methylene blue and 89% of degradation was achieved for 4.5h of solar light irradiation exposure which indicates the capability of NiO photocatalytic activity.

Synthesis of a novel one-dimensional BiOBr–Bi4O5Br2 heterostructure with a high quality interface and its enhanced visible-light photocatalytic activity

CrystEngComm ◽  
2018 ◽  
Vol 20 (16) ◽  
pp. 2292-2298 ◽  
Author(s):  
Jian Xu ◽  
Yan-Ge Mao ◽  
Ting Liu ◽  
Yin Peng
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Irradiation ◽  
Solar Light ◽  
High Quality ◽  
One Dimensional ◽  
Visible Light Photocatalytic Activity ◽  
Solar Light Irradiation ◽  
High Concentrations ◽  
Visible Light Photocatalytic

A novel rod-like BiOBr–Bi4O5Br2 heterostructure with a high quality interface is synthesized by calcining a BiOBr precursor in air. The BiOBr–Bi4O5Br2 heterostructure exhibits outstanding photocatalytic activity for degrading RhB dyes at high concentrations under visible/solar light irradiation.

Effective Photocatalytic Disinfection of Escherichia coli by One-Dimensional Ag2V4O11 Nanowires under Solar Light Irradiation

2013 ◽  
Vol 401-403 ◽  
pp. 771-774
Author(s):  
Peng Ju ◽  
Peng Wang ◽  
Dun Zhang
Keyword(s):  
Escherichia Coli ◽  
Visible Light ◽  
Active Species ◽  
Light Irradiation ◽  
Solar Light ◽  
One Dimensional ◽  
E Coli ◽  
Solar Light Irradiation ◽  
Absorption Performance ◽  
Almost All

In this paper, one-dimensional Ag2V4O11nanowires were prepared by a facile method and developed as a novel visible-light-sensitive photocatalyst for the disinfection of Escherichia coli (E. coli) under solar light irradiation. The as-prepared Ag2V4O11had uniform wire-like structure with large specific surface area and good visible-light absorption performance. Experimental results indicated that almost all (99.9%) of the initial bacteria were killed after 30 min reaction in the presence of 1 mg/mL Ag2V4O11under solar light irradiation. The photocatalytic mechanism was studied by active species trapping experiments, revealing that the hydroxyl radicals (·OH) played key roles in the inactivation of bacteria. This study provides a potential effective Ag2V4O11nanowire photocatalyst for water purification and other applications.

Preparation and Characterization of the Visible Light Responsive TiO2 Thin Film Photocatalysts Prepared by Magnetron Sputtering Method and Their Photocatalytic Activities for the Water Splitting Reactions

2005 ◽  
Vol 486-487 ◽  
pp. 81-84 ◽  
Author(s):  
Masaya Matsuoka ◽  
Masaaki Kitano ◽  
Masato Takeuchi ◽  
Masakazu Anpo ◽  
John M. Thomas
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Magnetron Sputtering ◽  
Visible Light ◽  
Water Splitting ◽  
Glass Container ◽  
Proton Exchange ◽  
Light Irradiation ◽  
Tio2 Thin Films ◽  
Photocatalytic Activities

Visible light responsive TiO2 (Vis-TiO2) thin films were successfully developed by the radio-frequency magnetron sputtering method, and their photocatalytic activities for the water splitting reactions were investigated. Pt-loaded Vis-TiO2 thin films acted as photocatalysts to decompose water involving sacrificial reagent such as methanol or silver nitrate under visible light irradiation (λ³ 420 nm). Furthermore, the separate evolution of H2 and O2 was successfully achieved under solar light irradiation by applying these photocatalysts in a H-type glass container, which consists of two water phases separated by a TiO2 thin film and proton-exchange membrane.

The Preparation of Visible Light-Responsive TiO2 Thin Films by Applying a RF-Magnetron Sputtering Deposition Method and Their Photocatalytic Reactivity for the Decomposition of Water with a Separate Evolution of H2 and O2

2006 ◽  
Vol 317-318 ◽  
pp. 823-826 ◽  
Author(s):  
Masaaki Kitano ◽  
Hisashi Kikuchi ◽  
Takahiro Hosoda ◽  
Masato Takeuchi ◽  
Masaya Matsuoka ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Magnetron Sputtering ◽  
Visible Light ◽  
Tio2 Thin Film ◽  
Rf Magnetron Sputtering ◽  
Light Irradiation ◽  
Deposition Method ◽  
Sputtering Deposition ◽  
Magnetron Sputtering Deposition Method

TiO2 (Vis-TiO2) thin films absorbing UV and visible light in regions of 250-600nm have been successfully developed by applying a radio-frequency (RF) magnetron sputtering deposition method. SIMS depth profiles of Vis-TiO2 revealed that the O/Ti ratio gradually decreases from the top surface (O/Ti ratio : 2.00 ± 0.01) to the inside (1.93 ± 0.01). This unique declined O/Ti composition (anisotropic structure) may be the origin of the significant perturbation in the electronic structure of Vis-TiO2, enabling the absorption of visible light and their high photocatalytic performance under visible light irradiation. In fact, it was found that the separate evolution of H2 and O2 from water could be successfully achieved under visible light or solar light irradiation by applying these thin film photocatalysts in an H-type glass container separating the two aqueous solutions by a TiO2 thin film and proton-exchange membrane, having H2 evolution from Pt side and O2 evolution from TiO2 thin film side, respectively.

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