Very efficient visible light energy harvesting and conversion by spectral sensitization of high surface area polycrystalline titanium dioxide films

1988 ◽  
Vol 110 (4) ◽  
pp. 1216-1220 ◽  
Author(s):  
Nick. Vlachopoulos ◽  
Paul. Liska ◽  
Jan. Augustynski ◽  
Michael. Graetzel
Keyword(s):  
Titanium Dioxide ◽  
Energy Harvesting ◽  
Visible Light ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Light Energy ◽  
Spectral Sensitization ◽  
Titanium Dioxide Films

Unveiling General Rules Governing Dimensional Evolution of Branched TiO2 and Impacts on Photo-electrochemical Behaviours

2021 ◽  
Author(s):  
Teera Butburee ◽  
Yang Bai ◽  
Lianzhou Wang
Keyword(s):  
Titanium Dioxide ◽  
Energy Conversion ◽  
Charge Transport ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
General Rules ◽  
Branched Nanostructures

Branched nanostructures represent a unique group of nanoarchitectures exhibiting advantageous high surface area and excellent charge transport for energy conversion application compared to their bulk counterparts. Especially, branched titanium dioxide...

High Surface Area SnO2 -Ta2 O5 Composite for Visible Light-driven Photocatalytic Degradation of an Organic Dye

2018 ◽  
Vol 94 (4) ◽  
pp. 633-640 ◽  
Author(s):  
Bharath Velaga ◽  
Pradeep P. Shanbogh ◽  
Diptikanta Swain ◽  
Chandrabhas Narayana ◽  
Nalini G. Sundaram
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Organic Dye ◽  
Visible Light Driven

scholarly journals The synthesis of a BiOClxBr1−x nanostructure photocatalyst with high surface area for the enhanced visible-light photocatalytic reduction of Cr(vi)

RSC Advances ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 4763-4771 ◽  
Author(s):  
Muhammad Bilal Hussain ◽  
Malik Saddam Khan ◽  
Herman Maloko Loussala ◽  
Muhammad Sohail Bashir
Keyword(s):  
Visible Light ◽  
Surface Area ◽  
Room Temperature ◽  
High Surface ◽  
High Surface Area ◽  
Photocatalytic Reduction ◽  
Synthetic Process ◽  
Visible Light Photocatalytic

Cr(vi) reduction is performed by BiOCl0.8Br0.2 composite produced via a facile in situ synthetic process at room temperature while making use of PVP (Mw = 10 000).

scholarly journals Synthesis of a high-surface area V2O5/TiO2–SiO2 catalyst and its application in the visible light photocatalytic degradation of methylene blue

RSC Advances ◽  
2019 ◽  
Vol 9 (42) ◽  
pp. 24368-24376 ◽  
Author(s):  
Ajay Kumar Adepu ◽  
Srinath Goskula ◽  
Suman Chirra ◽  
Suresh Siliveri ◽  
Sripal Reddy Gujjula ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Bet Surface Area ◽  
Titanium Silicate ◽  
Ft Ir ◽  
Synthesized Materials ◽  
Visible Light Photocatalytic

In the present study, we synthesized several high-surface area V2O5/TiO2–SiO2 catalysts (vanado titanium silicate, VTS). The synthesized materials are characterized by PXRD, FE-SEM/EDAX, TEM, BET-surface area, FT-IR, UV-Vis, XPS, fluorescence and photocatalytic studies.

Modulating interleaved ZnO assembly with CuO nanoleaves for multifunctional performance: perdurable CO2 gas sensor and visible light catalyst

2017 ◽  
Vol 4 (11) ◽  
pp. 1848-1861 ◽  
Author(s):  
Shravanti Joshi ◽  
Ram Kumar C. B. ◽  
Lathe A. Jones ◽  
Edwin L. H. Mayes ◽  
Samuel J. Ippolito ◽  
...  
Keyword(s):  
Visible Light ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Gas Detection ◽  
Visible Light Photocatalysis ◽  
Co2 Gas ◽  
Co2 Gas Sensor ◽  
Catalytic Role

Efficient CO2 gas detection and visible light photocatalysis performance shown by interleaved CuO/ZnO heterostructures ascribed primarily to the high surface area, p/n nano-interfaces and catalytic role of Ag.

Composite Titanium Dioxide Photocatalysts and the "Adsorb & Shuttle" Approach: A Review

2010 ◽  
Vol 162 ◽  
pp. 135-162 ◽  
Author(s):  
Yaron Paz
Keyword(s):  
Titanium Dioxide ◽  
Surface Area ◽  
Degradation Rate ◽  
High Surface ◽  
High Surface Area ◽  
Strength Of Interaction ◽  
Composite Photocatalysts ◽  
End Products ◽  
Operation Parameters ◽  
Specific Species

Composite photocatalysts, made of titanium dioxide and high surface area adsorbents become more and more common. To large extent, this is due to the phenomenon of "Adsorb & Shuttle", i.e. the adsorption of molecules on the inert, adsorptive, domains, followed by diffusion to the photocatalytic domains. This manuscript reviews the published literature on composite photocatalysts, and analyzes the various aspects affecting their performance. One of these aspects is the enhancement of the degradation rate of pollutants, which is governed by a variety of factors including surface area, adsorpticity, strength of interaction, the loading of photocatalyst in the composite, and operation parameters (such as temperature, humidity and pH). Other aspects include a reduction in the emission of intermediate products and a different distribution of end-products. Care was taken to describe the possibility of using the inert adsorptive domains to enhance the degradation of specific species, as well as to discuss the effect of composite photocatalysts on deactivation phenomena, and the interrelation between "Adsorb & Shuttle" phenomena and out- diffusion of oxidizing species from the TiO2 domains, known as the "remote degradation" phenomenon.

scholarly journals A Novel N-Doped Nanoporous Bio-Graphene Synthesized from Pistacia lentiscus Gum and Its Nanocomposite with WO3 Nanoparticles: Visible-Light-Driven Photocatalytic Activity

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6569
Author(s):  
Maryam Afsharpour ◽  
Mehdi Elyasi ◽  
Hamedreza Javadian
Keyword(s):  
Visible Light ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Nanoporous Structure ◽  
Pistacia Lentiscus ◽  
Nitrogen Doped ◽  
Visible Light Driven ◽  
Ft Ir ◽  
Natural Carbon

This paper reports the synthesis of a new nitrogen-doped porous bio-graphene (NPBG) with a specific biomorphic structure, using Pistacia lentiscus as a natural carbon source containing nitrogen that also acts as a bio-template. The obtained NPBG demonstrated the unique feature of doped nitrogen with a 3D nanoporous structure. Next, a WO3/N-doped porous bio-graphene nanocomposite (WO3/NPBG-NC) was synthesized, and the products were characterized using XPS, SEM, TEM, FT-IR, EDX, XRD, and Raman analyses. The presence of nitrogen doped in the structure of the bio-graphene (BG) was confirmed to be pyridinic-N and pyrrolic-N with N1 peaks at 398.3 eV and 400.5 eV, respectively. The photocatalytic degradation of the anionic azo dyes and drugs was investigated, and the results indicated that the obtained NPBG with a high surface area (151.98 m2/g), unique electronic properties, and modified surface improved the adsorption and photocatalytic properties in combination with WO3 nanoparticles (WO3-NPs) as an effective visible-light-driven photocatalyst. The synthesized WO3/NPBG-NC with a surface area of 226.92 m2/g displayed lower bandgap and higher electron transfer compared with blank WO3-NPs, leading to an increase in the photocatalytic performance through the enhancement of the separation of charge and a reduction in the recombination rate. At the optimum conditions of 0.015 g of the nanocomposite, a contact time of 15 min, and 100 mg/L of dyes, the removal percentages were 100%, 99.8%, and 98% for methyl red (MR), Congo red (CR), and methyl orange (MO), respectively. In the case of the drugs, 99% and 87% of tetracycline and acetaminophen, respectively, at a concentration of 10 mg/L, were removed after 20 min.

High surface area, high catalytic activity titanium dioxide aerogels prepared by solvothermal crystallization

2020 ◽  
Vol 47 ◽  
pp. 223-230 ◽  
Author(s):  
Xian Yue ◽  
Junhui Xiang ◽  
Junyong Chen ◽  
Huaxin Li ◽  
Yunsheng Qiu ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Catalytic Activity ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
High Catalytic Activity
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