Highly dispersed phase of SnO2 on TiO2 nanoparticles synthesized by polyol-mediated route: Photocatalytic activity for hydrogen generation

Sasikala, R.; Shirole, A.R.; Sudarsan, V.; Sakuntala, T.; Sudakar, C.; Naik, R.; Bharadwaj, S.R.

doi:10.1016/j.ijhydene.2009.02.085

Cited by 150 publications

(69 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It indicated that SnCl2 or Sn 2+ was reduced to Sn 4+ as cassiterite and, then the chlorine ions were eliminated during calcination. The WAXD was in good agreement with the XRD results from Sasikala et al report [20]. It informed that the impregnation method produced SnCl2-doped TiO2 photocatalyst successfully.…”

Section: 1supporting

confidence: 85%

Studies on SnCl2-doped TiO2 photocatalyst for Pyrocatechol Photodegradation

Lecante¹,

Shotika

Phiyanalinmat

2014

View full text Add to dashboard Cite

Abstract. SnCl2-doped TiO2 photocatalyst for pyrocatechol photodegradation aimed to examine the effect of Sn/Ti ratio and H2O2+UVC irradiation. The preparation was carried out by the impregnation and the characterization consisted of WAXD, SEM, and laser particle size. Using 1 mM pyrocatechol in the CSTR with various TiO2 photocatalysts, the remaining pyrocatechol was determined by UV-vis spectrophotometry to calculate % photodegradation. From WAXD results, it was found that SnO2 incorporation to the TiO2 bulk phase but the morphologies did not change. And the particle size changed due to the attraction force of the surface charging. Without H2O2 addition, it showed 15.7% photodegradation by TiSn10UVC compared to 11.37% of TiDark. Thus, UVC was the important factor for photodegradation. With H2O2+UVC irradiation, the maximum photodegradation reached 34.6% by TiSn10HOUVC, but those of HOUVC and TiHOUVC showed 25.0% and 26.5%, respectively. The Sn-doping affected the formation of more hydroxyl free radical from H2O2+UVC irradiation and charge separation. But higher Sn/Ti ration, it gave segregate SnO2 which increased recombination center with the adverse effect on the lower photodegradation. The conclusion revealed that SnCl2-doping with the ratio of Sn/Ti =10 onto TiO2 photocatalyst showed the highest photoactivity with H2O2+UVC irradiation. Moreover, the chemical kinetics is also discussed.

show abstract

Section: 1supporting

confidence: 85%

Studies on SnCl2-doped TiO2 photocatalyst for Pyrocatechol Photodegradation

Lecante¹,

Shotika

Phiyanalinmat

2014

View full text Add to dashboard Cite

show abstract

“…For hydrogen production, that is, e À react with H + , the sacrificial reagents are electron donors. Organic compounds such as methanol, ethanol, lactic acid, formaldehyde, CN À , and EDTA [33,92,94,[110][111][112][113] are widely used as electron donors, as are some biomass-derived carbohydrates. [64,114] Adding these compounds has been proved to be an effective way of enhancing the hydrogen production rate.…”

Section: Adding Sacrificial Reagents To the Reaction Solutionmentioning

confidence: 99%

Hydrogen Production over Titania‐Based Photocatalysts

et al. 2010

View full text Add to dashboard Cite

Because of their relatively high efficiency, high photostability, abundance, low cost, and nontoxic qualities, titania-based photocatalysts are still the most extensively studied materials for the photocatalytic production of hydrogen from water. The effects of the chemical and physical properties of titania, including crystal phase, crystallinity, particle size, and surface area, on its photoactivity towards hydrogen generation have been identified by various investigations. The high overpotential for hydrogen generation, rapid recombination of photogenerated electrons and holes, rapid reverse reaction of molecular hydrogen and oxygen, and inability to absorb visible light are considered the most important factors that restrict the photoactivity of titania, and strategies to overcome these barriers have been developed. These issues and strategies are carefully reviewed and summarized in this Minireview. We aim to provide a critical, up-to-date overview of the development of titania-based photocatalysts for hydrogen production, as well as a comprehensive background source and guide for future research.

show abstract

“…In the open literature, variety of techniques of oxides preparation in powder or thin film have been presented. Among these techniques one can cite the hydrothermal technique [16], the chemical vapor deposition (CVD) [17], the co-precipitation [18], the metal organic chemical vapor deposition (MOCVD) [19], the spray pyrolysis [20,21], the sol-gel methods [22][23][24][25][26][27][28][29][30][31] and the conventional polyol method [32,33]. Among these methods, an example of this is the polyol & R. Bargougui bargougui_radhwane@yahoo.fr method developed by Fievet et al [34,35] for preparation of metal particles.…”

Section: Introductionmentioning

confidence: 99%

Controlled synthesis and electrical conduction properties of anatase TiO2 nanoparticles via the polyol method

et al. 2016

View full text Add to dashboard Cite

This paper reports the preparation and characterization of titanium dioxide nanoparticles (TiO 2 -NPs) with pure anatase phases using polyol synthesis process. The preparation state and the particle size are controlled by varying the synthesis parameters such as the precursor concentration, hydrolysis rate and the synthesis time. Nanoparticles were characterized by X-ray diffractometry, TEM, FT-IR spectroscopy and the measure of the complex impedance spectroscopy. Their physicochemical properties were investigated to optimize the synthesis conditions. FT-IR spectra exhibit broad peaks where anatase phases of TiO 2 demonstrate very sharp peaks. The structural characterization by XRD confirms that there is a formation of anatase TiO 2 -NPs phases at 550°C and the crystalline size is in the range of 19-25 nm. The crystallite size of the TiO 2 core decreases with the concentration of titanium tetrachloride TiCl 4 precursor. Electrical properties and relaxation phenomenon of the material were studied at several temperatures.

show abstract

Highly dispersed phase of SnO2 on TiO2 nanoparticles synthesized by polyol-mediated route: Photocatalytic activity for hydrogen generation

Cited by 150 publications

References 39 publications

Studies on SnCl2-doped TiO2 photocatalyst for Pyrocatechol Photodegradation

Studies on SnCl2-doped TiO2 photocatalyst for Pyrocatechol Photodegradation

Hydrogen Production over Titania‐Based Photocatalysts

Controlled synthesis and electrical conduction properties of anatase TiO2 nanoparticles via the polyol method

Contact Info

Product

Resources

About