A critical review of metal-doped TiO2 and its structure–physical properties–photocatalytic activity relationship in hydrogen production

Ibrahim, Nur Syuhada Che; Leaw, Wai Loon; Mohamad, Dzulkifli; Alias, Salina; Nur, Hadi

doi:10.1016/j.ijhydene.2020.07.233

Cited by 67 publications

(23 citation statements)

References 71 publications

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“… 15 − 24 Among them, noble metal NPs deposited on TiO 2 -based photocatalysts have gained widespread attention with good photostability, activity, nontoxicity, and low cost for practical applications. 25 Typically, metal NP-deposited TiO 2 photocatalysts are utilized as suspended powders in the reaction. Thus, it could face difficulties in separating and recovering the photocatalyst NPs without any loss from reaction solutions.…”

Section: Introductionmentioning

confidence: 99%

“…Several reports show that photocatalysts with noble metal-based NPs in a suspended powder form can produce H 2 from formic acid dehydrogenation. − Among them, noble metal NPs deposited on TiO 2 -based photocatalysts have gained widespread attention with good photostability, activity, nontoxicity, and low cost for practical applications . Typically, metal NP-deposited TiO 2 photocatalysts are utilized as suspended powders in the reaction.…”

Section: Introductionmentioning

confidence: 99%

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Laser Ablation Nanoarchitectonics of Au–Cu Alloys Deposited on TiO₂ Photocatalyst Films for Switchable Hydrogen Evolution from Formic Acid Dehydrogenation

et al. 2022

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The regulation of H 2 evolution from formic acid dehydrogenation using recyclable photocatalyst films is an essential approach for on-demand H 2 production. We have successfully generated Au–Cu nanoalloys using a laser ablation method and deposited them on TiO 2 photocatalyst films (Au x Cu 100– x /TiO 2 ). The Au–Cu/TiO 2 films were employed as photocatalysts for H 2 production from formic acid dehydrogenation under light-emitting diode (LED) irradiation (365 nm). The highest H 2 evolution rate for Au 20 Cu 80 /TiO 2 is archived to 62,500 μmol h –1 g –1 per photocatalyst weight. The remarkable performance of Au 20 Cu 80 /TiO 2 may account for the formation of Au-rich surfaces and the effect of Au alloying that enables Cu to sustain the metallic form on its surface. The metallic Au–Cu surface on TiO 2 is vital to supply the photoexcited electrons of TiO 2 to its surface for H 2 evolution. The rate-determining step (RDS) is identified as the reaction of a surface-active species with protons. The results establish a practical preparation of metal alloy deposited on photocatalyst films using laser ablation to develop efficient photocatalysts.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laser Ablation Nanoarchitectonics of Au–Cu Alloys Deposited on TiO₂ Photocatalyst Films for Switchable Hydrogen Evolution from Formic Acid Dehydrogenation

et al. 2022

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Section: Introductionmentioning

confidence: 99%

“…Another promising alternative to generate hydrogen is water electrolysis, which uses semiconductor materials with suitable bandgap as photocatalysts for activation under solar energy. [9] Photocatalytic is preferred to produce hydrogen as it applies the readily available solar energy to commence reaction. [10] Light energy from the sunlight is converted into chemical energy in the presence of a suitable photocatalyst during photocatalysis to generate hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Surface Physicochemistry Modification and Structural Nanoarchitectures of g‐C₃N₄ for Wastewater Remediation and Solar Fuel Generation

Hasnan

Mohamed

Hir

2021

Adv Materials Technologies

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“…Doping metal ions onto the surface of TiO 2 narrows the bandgap, which not only allows energy absorption to be extended to visible light but also improves charge separation and photocatalytic activity [ 11 , 12 , 13 ]. The visible light sensitization effects have been studied on TiO 2 doped with various metals such as rhodium, palladium, platinum, gold, silver, ruthenium, cobalt, copper, and nickel [ 14 , 15 , 16 , 17 ]. Various photocatalytic activities were shown according to metal doping.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Activity of TiO2-Doped Fe, Ag, and Ni with N under Visible Light Irradiation

Park

2021

Gels

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Doping with noble metal ions or doping with nitrogen has been attempted to prepare TiO2 that reacts even in visible light. In this study, TiO2 was doped with nitrogen and various metal ions instead of noble metals. The TiO2 photocatalysts doped with metal ions (Fe, Ag, Ni) and nitrogen were prepared by a sol-gel method. Their physicochemical properties were characterized and their photocatalytic activities were investigated under visible light irradiation. In TiO2 doped with metal ions and nitrogen, the light absorption region was extended to visible light. The photoluminescence intensity was much greater in N/Ni/TiO2 than in N/Ag/TiO2 and N/Fe/TiO2. The photolysis activities of N/Ni/TiO2 were the highest in formaldehyde decomposition and methylene blue decomposition. The sterilization efficiency of N/Ni/TiO2 was the highest in the evaluation test for the inhibition of the proliferation of Pseudomonas aeruginosa. The bandgap of N/Ni/TiO2 was 2.4 eV, which was significantly lower than that of anatase TiO2 (3.2 eV). The N/Ni/TiO2 had a much higher optical intensity than other metal ion-doped TiO2, so it was highly active under visible light irradiation.

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A critical review of metal-doped TiO2 and its structure–physical properties–photocatalytic activity relationship in hydrogen production

Cited by 67 publications

References 71 publications

Laser Ablation Nanoarchitectonics of Au–Cu Alloys Deposited on TiO₂ Photocatalyst Films for Switchable Hydrogen Evolution from Formic Acid Dehydrogenation

Laser Ablation Nanoarchitectonics of Au–Cu Alloys Deposited on TiO₂ Photocatalyst Films for Switchable Hydrogen Evolution from Formic Acid Dehydrogenation

Surface Physicochemistry Modification and Structural Nanoarchitectures of g‐C₃N₄ for Wastewater Remediation and Solar Fuel Generation

Photocatalytic Activity of TiO2-Doped Fe, Ag, and Ni with N under Visible Light Irradiation

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A critical review of metal-doped TiO2 and its structure–physical properties–photocatalytic activity relationship in hydrogen production

Cited by 67 publications

References 71 publications

Laser Ablation Nanoarchitectonics of Au–Cu Alloys Deposited on TiO2 Photocatalyst Films for Switchable Hydrogen Evolution from Formic Acid Dehydrogenation

Laser Ablation Nanoarchitectonics of Au–Cu Alloys Deposited on TiO2 Photocatalyst Films for Switchable Hydrogen Evolution from Formic Acid Dehydrogenation

Surface Physicochemistry Modification and Structural Nanoarchitectures of g‐C3N4 for Wastewater Remediation and Solar Fuel Generation

Photocatalytic Activity of TiO2-Doped Fe, Ag, and Ni with N under Visible Light Irradiation

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Laser Ablation Nanoarchitectonics of Au–Cu Alloys Deposited on TiO₂ Photocatalyst Films for Switchable Hydrogen Evolution from Formic Acid Dehydrogenation

Laser Ablation Nanoarchitectonics of Au–Cu Alloys Deposited on TiO₂ Photocatalyst Films for Switchable Hydrogen Evolution from Formic Acid Dehydrogenation

Surface Physicochemistry Modification and Structural Nanoarchitectures of g‐C₃N₄ for Wastewater Remediation and Solar Fuel Generation