Transparent graphene quantum dot/amorphous TiO2 nanocomposite sol as homogeneous-like photocatalyst

Thaweechai, Thammanoon; Sirisaksoontorn, Weekit; Poo‐arporn, Yingyot; Chanlek, Narong; Seraphin, Suṗapan; Thachepan, Surachai; Poo-arporn, Rungtiva P.; Suramitr, Songwut

doi:10.1007/s11051-021-05338-7

Cited by 5 publications

(2 citation statements)

References 45 publications

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“…The synthesis condition of TiO 2 nanosol was modified from the previous report. 49 In brief, 750 μL of titanium tetraisopropoxide (≥97%, Sigma-Aldrich) was gradually added into 15 mL of ethanol with constant stirring at ambient temperature. The pH of a solution was adjusted to 3 using 0.87 M HCl (ACS reagent grade, Merck).…”

Section: Methodsmentioning

confidence: 99%

Bifunctional MoS₂/TiO₂ Nanoparticles for Hydrodeoxygenation of Oleic Acid and Photodegradation of Carbonaceous Deposits

Krobkrong

Wangvisavawit

Chanlek

et al. 2022

ACS Appl. Nano Mater.

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In this work, MoS 2 /TiO 2 nanoparticles were investigated as a bifunctional catalyst for the conversion of oleic acid to diesel-range hydrocarbons and the removal of carbonaceous deposits on the catalyst surface. The entire series of catalysts with different mass loadings of MoS 2 (5−20 wt %) was synthesized via a solvothermal method. MoS 2 /TiO 2 nanoparticles had a high degree of MoS 2 dispersion on anatase TiO 2 support. The Brunauer− Emmett−Teller analysis reveals a marked increase in the specific surface area of 20 wt % MoS 2 /TiO 2 (171 m 2 g −1 ) compared to bare TiO 2 (121 m 2 g −1 ). For the catalytic conversion of oleic acid, it was found that the fraction of diesel-range hydrocarbons (C17−C18) in liquid products enhanced with increasing MoS 2 mass loading. Moreover, the MoS 2 /TiO 2 catalyst also presented high selectivity toward C18 hydrocarbons. This suggests that hydrodeoxygenation (HDO) was a dominant pathway for the catalytic conversion of oleic acid over MoS 2 /TiO 2 nanoparticles. For the photocatalytic degradation, to clean up the MoS 2 /TiO 2 catalyst after being used for the oleic acid conversion, hence, the photocatalytic removal of carbonaceous deposits on the surface was studied. The results demonstrate that carbonaceous deposits on spent MoS 2 /TiO 2 were removed under UV-light irradiation due to the photodegradation property of the TiO 2 support. Therefore, the active surface of the MoS 2 /TiO 2 catalyst was simply recovered by a facile approach at room temperature.

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Section: Methodsmentioning

confidence: 99%

Bifunctional MoS₂/TiO₂ Nanoparticles for Hydrodeoxygenation of Oleic Acid and Photodegradation of Carbonaceous Deposits

Krobkrong

Wangvisavawit

Chanlek

et al. 2022

ACS Appl. Nano Mater.

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“…9 In heterogeneous photocatalysis, it has been reported that TiO 2 nanocomposite sols can be used as a support to achieve homogeneous-like photocatalysts. 10 Unfortunately, they are not well dispersed in organic solvents, leading to their limited application in organic synthesis. In this study, a new bridge between homogeneous and heterogeneous photocatalyses is built from the view of the good dispersibility of organic polymers in organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Homogeneous-like photocatalysis: covalent immobilization of an iridium(III) complex onto polystyrene brushes grafted on SiO₂ nanoparticles as a mass/charge transfer-enhanced platform

Chen,

Zhou,

2024

Dalton Trans.

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Magnetite deposit on graphene nanoplatelets Surface: An assessment of grafting parameters

Ayub

Guan

Soleimani

et al. 2023

Ain Shams Engineering Journal

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Transparent graphene quantum dot/amorphous TiO2 nanocomposite sol as homogeneous-like photocatalyst

Cited by 5 publications

References 45 publications

Bifunctional MoS₂/TiO₂ Nanoparticles for Hydrodeoxygenation of Oleic Acid and Photodegradation of Carbonaceous Deposits

Bifunctional MoS₂/TiO₂ Nanoparticles for Hydrodeoxygenation of Oleic Acid and Photodegradation of Carbonaceous Deposits

Homogeneous-like photocatalysis: covalent immobilization of an iridium(III) complex onto polystyrene brushes grafted on SiO₂ nanoparticles as a mass/charge transfer-enhanced platform

Magnetite deposit on graphene nanoplatelets Surface: An assessment of grafting parameters

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Transparent graphene quantum dot/amorphous TiO2 nanocomposite sol as homogeneous-like photocatalyst

Cited by 5 publications

References 45 publications

Bifunctional MoS2/TiO2 Nanoparticles for Hydrodeoxygenation of Oleic Acid and Photodegradation of Carbonaceous Deposits

Bifunctional MoS2/TiO2 Nanoparticles for Hydrodeoxygenation of Oleic Acid and Photodegradation of Carbonaceous Deposits

Homogeneous-like photocatalysis: covalent immobilization of an iridium(III) complex onto polystyrene brushes grafted on SiO2 nanoparticles as a mass/charge transfer-enhanced platform

Magnetite deposit on graphene nanoplatelets Surface: An assessment of grafting parameters

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Bifunctional MoS₂/TiO₂ Nanoparticles for Hydrodeoxygenation of Oleic Acid and Photodegradation of Carbonaceous Deposits

Bifunctional MoS₂/TiO₂ Nanoparticles for Hydrodeoxygenation of Oleic Acid and Photodegradation of Carbonaceous Deposits

Homogeneous-like photocatalysis: covalent immobilization of an iridium(III) complex onto polystyrene brushes grafted on SiO₂ nanoparticles as a mass/charge transfer-enhanced platform