Photocatalytic properties of redox-treated Pt/TiO2 photocatalysts for H2 production from an aqueous methanol solution

Huang, Bing-Shun; Chang, Fu‐Min; Wey, Ming‐Yen

doi:10.1016/j.ijhydene.2010.05.103

Cited by 80 publications

(27 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A suitable precursor (chloroplatinic acid hydrate, 99.95 %, Uni-onward Corporation) was dissolved in distilled water to form the Pt precursor solution. N-doped TiO 2 powder was added to the precursor solution and regulated to 0.2 wt% to improve photocatalytic H 2 production (Huang et al 2010). The mixture was added to an aqueous methanol solution (50 % v/v) and illuminated with a UV lamp (Ultra-Vitalux, 300 W, Osram) for 7 h to remove Cl -and residual solvent.…”

Section: Methodsmentioning

confidence: 99%

Characterization and photoactivity of Pt/N-doped TiO2 synthesized through a sol–gel process at room temperature

Huang

Tseng

et al. 2015

J Nanopart Res

Self Cite

View full text Add to dashboard Cite

The rates of photocatalytic production of H 2 by Pt/N-doped TiO 2 are significantly affected by the hydrolysis temperature applied during the sol-gel process. Production rates increase as the hydrolysis temperature decreases from 40 to 20°C. The effects of the hydrolysis temperature on the properties and water-splitting behavior of photocatalysts were investigated. Characterization results showed that hydrolysis temperatures higher than 40°C induce the formation of the rutile phase and particle agglomeration, reduce the N-dopant content, and decrease the range of visible-light absorption. In this study, a low hydrolysis temperature of about 20°C is optimal for the sol-gel preparation of N-doped TiO 2 ; this temperature favors the formation of high-purity anatase, small particle size, extensive visible-light absorption, and excellent rates of photocatalytic production of H 2 (about 2100 lmol h -1 g -1 ).

show abstract

Section: Methodsmentioning

confidence: 99%

Characterization and photoactivity of Pt/N-doped TiO2 synthesized through a sol–gel process at room temperature

Huang

Tseng

et al. 2015

J Nanopart Res

Self Cite

View full text Add to dashboard Cite

show abstract

“…The BET specific surfaces of the sol-gel to the increase of the ratio of rutile/anatase phase in Degussa P25 [37]. Only a slight red shift and band broadening suggested an interaction between TiO 2 and oxidized Pt in case of sample SnOx-I Pt calc (spectrum e in Figure 2).…”

Section: Preliminary Characterization Of the Photocatalystsmentioning

confidence: 97%

“…To the best of our knowledge no systematic study of the effect of cocatalyst formation in these systems exists; only influence of redox-treatment on Pt/TiO 2 system has been described [37]. Reviewing the literature on Pt/TiO 2 systems with Pt cocatalyst loaded by different way, certain indication can be found that the ionic state of the Pt is favorable for the photocatalytic reaction [38][39][40].…”

mentioning

confidence: 99%

PtOx-SnOx-TiO2 catalyst system for methanol photocatalytic reforming: Influence of cocatalysts on the hydrogen production

et al. 2018

View full text Add to dashboard Cite

Abstract:Effects of modification of PtO x -TiO 2 photocatalysts by tin were elucidated by exploring relationships between the structural properties of variously prepared tin-loaded catalysts and their catalytic activity in methanol photocatalytic reforming. Tin free and amorphous tinoxide decorated TiO 2 samples were prepared by sol-gel method from titanium-isopropoxide.In other approach, Sn was loaded onto the sol-gel prepared TiO 2 by impregnation followed by calcination. Pt was introduced by impregnation followed by either reduction in H 2 at 400 o C or calcination at 300 o C. TEM, XRD and Raman spectroscopic measurements proved that TiO 2 existed in the form of aggregates of polycrystalline anatase with primary particle size of 15-20 nm in each of the samples. Photocatalytic hydrogen production was influenced by the combined effect of many parameters. Both the presence of Sn and the way of Pt co-catalyst formation played important role in the activity of these photocatalysts. The Sn introduction by both sol-gel method and impregnation clearly enhanced the photocatalytic activity.

show abstract

“…Following drying, the powders were calcined at 350°C in static air for 2 h. This reduced surface Au 3+ to Au 0 . The PdO/TiO 2 and PtO/TiO 2 powders obtained by calcination in static air at 350°C were subsequently heated to 500°C for 2 h in a H 2 /N 2 flow (5 vol.% H 2 , 100 mL min À1 ) to reduce adsorbed cationic species to their metallic form [25,26]. XRF data were taken on a Siemens SRS3000 spectrometer.…”

Section: Preparation Of M/tio 2 Photo-catalysts (M = Pd Pt or Au)mentioning

confidence: 99%

The roles of metal co-catalysts and reaction media in photocatalytic hydrogen production: Performance evaluation of M/TiO2 photocatalysts (M = Pd, Pt, Au) in different alcohol–water mixtures

Al-Azri

Chen

Chan

et al. 2015

Journal of Catalysis

327

215

View full text Add to dashboard Cite

Photocatalytic properties of redox-treated Pt/TiO2 photocatalysts for H2 production from an aqueous methanol solution

Cited by 80 publications

References 34 publications

Characterization and photoactivity of Pt/N-doped TiO2 synthesized through a sol–gel process at room temperature

Characterization and photoactivity of Pt/N-doped TiO2 synthesized through a sol–gel process at room temperature

PtOx-SnOx-TiO2 catalyst system for methanol photocatalytic reforming: Influence of cocatalysts on the hydrogen production

The roles of metal co-catalysts and reaction media in photocatalytic hydrogen production: Performance evaluation of M/TiO2 photocatalysts (M = Pd, Pt, Au) in different alcohol–water mixtures

Contact Info

Product

Resources

About