TiO2–SiO2 mixed oxides: Organic ligand templated controlled deposition of titania and their photocatalytic activities for hydrogen production

Peng, Rui; Banerjee, Subhash; Sereda, Grigoriy; Koodali, Ranjit T.

doi:10.1016/j.ijhydene.2012.07.047

Cited by 23 publications

(11 citation statements)

References 66 publications

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“…[2,3] Among these potential photocatalystsf or solar hydrogen production, TiO 2 receives the mostr esearch interest owing to its suitable bandedge alignment,e xcellent stabilityu nder av ariety of chemical conditions, wide accessibility,and low cost. [4][5][6][7] Although TiO 2 is considered as ap rominent candidate for photocatalytic hydrogen generation, severalw rinkles still need to be ironed out. Owing to its large band-gap energy (BE), anatase TiO 2 (BE = 3.2 eV) can absorb only the highly energetic UV light that accounts for less than 5% of the solar spectrum.…”

Section: Introductionmentioning

confidence: 99%

Titania Composites with 2 D Transition Metal Carbides as Photocatalysts for Hydrogen Production under Visible‐Light Irradiation

et al. 2016

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MXenes, a family of two-dimensional transition-metal carbides, were successfully demonstrated as co-catalysts with rutile TiO2 for visible-light-induced solar hydrogen production from water splitting. The physicochemical properties of Ti3 C2 Tx MXene coupled with TiO2 were investigated by a variety of characterization techniques. The effect of the Ti3 C2 Tx loading on the photocatalytic performance of the TiO2 /Ti3 C2 Tx composites was elucidated. With an optimized Ti3 C2 Tx content of 5 wt %, the TiO2 /Ti3 C2 Tx composite shows a 400 % enhancement in the photocatalytic hydrogen evolution reaction compared with that of pure rutile TiO2 . We also expanded our exploration to other MXenes (Nb2 CTx and Ti2 CTx ) as co-catalysts coupled with TiO2 , and these materials also exhibited enhanced hydrogen production. These results manifest the generality of MXenes as effective co-catalysts for solar hydrogen production.

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Section: Introductionmentioning

confidence: 99%

Titania Composites with 2 D Transition Metal Carbides as Photocatalysts for Hydrogen Production under Visible‐Light Irradiation

et al. 2016

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“…Many studies have been developed using various types of powdered photocatalysts for photoelectrochemical water splitting [1][2][3][4]. This process has a major drawback, which is the production of H 2 and O 2 as a mixture.…”

Section: Introductionmentioning

confidence: 99%

Facile one-step process for synthesis of vertically aligned cobalt oxide doped TiO2 nanotube arrays for solar energy conversion

Ali

Ismail

Mekewi

et al. 2015

J Solid State Electrochem

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Vertically aligned cobalt oxide doped TiO 2 nanotube arrays (Co.-oxide TNTAs) were synthesized via one potanodic oxidation of pure titanium substrate in the presence of ammonium fluoride and cobalt salt. After subsequent annealing in air the produced arrays were in the tubular structure and doped with Co.-oxide. The designed TNTAs and Co.-oxide TNTAs were tested as photoanode electrodes in a photoelectrochemical cell. Energy dispersive X-ray (EDX) spectroscopy confirms the incorporation of Co. in the doped TNTAs. The Tauc plots estimated from UV-Vis diffuse reflectance spectra displayed that the insertion of the optimum amount of Co.-oxide leads to a decrease in the band gap of TiO 2 from 3.2 to 2.9 eV. The influences of various cobalt salt concentrations in the electrolyte solution (5, 10, 15, 20 and 25 mM) on the morphology were studied. The evaluation of the photocurrent and photoconversion efficiency was performed for all the fabricated electrodes. Morphological studies illustrated that the addition of cobalt salt with small concentration has no an obvious effect on the ordered tubular structure of TNTAs, whereas, at higher concentrations the tubular structure was partially collapsed. Co.-oxide enhanced the photoconversion efficiency of TNTA electrode by 30 % at optimum concentration under 110 mW/cm 2 solar simulator illumination.

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“…Interestingly, amorphous Pd‐SiO 2 NPs (SI 3) as catalyst ended up the reaction with moderate yield (63 %, entry 4, Table ). The lower yield of product using Pd‐SiO 2 could possibly due to lower surface area (352 m 2 /g) and lack of ordered and uniform pores in amorphous SiO 2 …”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of 1,3,5‐Triarylbenzenes and 4‐Aryl‐NH‐1,2,3‐Triazoles Using Mesoporous Pd‐MCM‐41 as Reusable Catalyst

Saha

Peng

et al. 2018

Eur J Org Chem

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We report mesoporous nano‐Pd‐MCM‐41 catalyzed rapid and efficient synthesis of 1,3,5‐triarylbenzenes via de‐nitrative cyclotrimerization of β‐nitrostyrenes. All the reactions were very fast and high yielding. The Pd‐MCM‐41 was also very effective in catalyzing de‐nitrative [3+2] cycloaddition of β‐nitrostyrenes with TMSN3 to synthesize 4‐aryl‐NH‐1,2,3‐triazoles. The catalyst was reused at least up to eight times with minimum loss of catalytic activity.

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TiO2–SiO2 mixed oxides: Organic ligand templated controlled deposition of titania and their photocatalytic activities for hydrogen production

Cited by 23 publications

References 66 publications

Titania Composites with 2 D Transition Metal Carbides as Photocatalysts for Hydrogen Production under Visible‐Light Irradiation

Titania Composites with 2 D Transition Metal Carbides as Photocatalysts for Hydrogen Production under Visible‐Light Irradiation

Facile one-step process for synthesis of vertically aligned cobalt oxide doped TiO2 nanotube arrays for solar energy conversion

Facile Synthesis of 1,3,5‐Triarylbenzenes and 4‐Aryl‐NH‐1,2,3‐Triazoles Using Mesoporous Pd‐MCM‐41 as Reusable Catalyst

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