A Clean and General Strategy To Decorate a Titanium Metal–Organic Framework with Noble-Metal Nanoparticles for Versatile Photocatalytic Applications

Shen, Lijuan; Luo, Ming‐Bu; Huang, Linjuan; Feng, Pingyun; Wu, Ling

doi:10.1021/ic502609a

Cited by 154 publications

(67 citation statements)

References 35 publications

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“…[94] Noble metal NPs formation is directed by an in situ redox reaction between the reductive MIL-125(Ti) with Ti 3+ and oxidative metal salt precursors (Scheme 7). [94] Noble metal NPs formation is directed by an in situ redox reaction between the reductive MIL-125(Ti) with Ti 3+ and oxidative metal salt precursors (Scheme 7).…”

Section: Angewandte Chemiementioning

confidence: 99%

“…[94] TEM images revealed that the small Au,P d, and Pt NPs are homogeneously distributed on the MIL-125(Ti) with the average diameters of Au,P d, and Pt being 6, 3, and 3nm, respectively.MIL-125(Ti) showed aconversion of 18. [94] TEM images revealed that the small Au,P d, and Pt NPs are homogeneously distributed on the MIL-125(Ti) with the average diameters of Au,P d, and Pt being 6, 3, and 3nm, respectively.MIL-125(Ti) showed aconversion of 18.…”

Section: Angewandte Chemiementioning

confidence: 99%

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Metal–Organic Framework (MOF) Compounds: Photocatalysts for Redox Reactions and Solar Fuel Production

2016

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Metal-organic frameworks (MOFs) are crystalline porous materials formed from bi- or multipodal organic linkers and transition-metal nodes. Some MOFs have high structural stability, combined with large flexibility in design and post-synthetic modification. MOFs can be photoresponsive through light absorption by the organic linker or the metal oxide nodes. Photoexcitation of the light absorbing units in MOFs often generates a ligand-to-metal charge-separation state that can result in photocatalytic activity. In this Review we discuss the advantages and uniqueness that MOFs offer in photocatalysis. We present the best practices to determine photocatalytic activity in MOFs and for the deposition of co-catalysts. In particular we give examples showing the photocatalytic activity of MOFs in H2 evolution, CO2 reduction, photooxygenation, and photoreduction.

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Section: Angewandte Chemiementioning

confidence: 99%

Section: Angewandte Chemiementioning

confidence: 99%

Metal–Organic Framework (MOF) Compounds: Photocatalysts for Redox Reactions and Solar Fuel Production

2016

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“…On exposure to UV radiation, the GO and Ag + are reduced to rGO and Ag 0 NPs in nitrogen atmosphere, simultaneously. This may be mainly due to the UV illumination of MIL‐125(Ti) initiating the formation of Ti 3+ by optically induced electron trapping at Ti 4+ sites . The Ag + and GO adsorbed onto MIL‐125(Ti) are reduced due to the strong reducing ability of Ti 3+ (−1.37 V versus SHE).…”

Section: Resultsmentioning

confidence: 99%

“…Shen et al . also decorated MIL‐125(Ti) with highly dispersed Au, Pd and Pt nanoparticles (NPs) via the photodeposition strategy . The presence of noble metal NPs as co‐catalysts plays an important role in enhancing the efficiency of H 2 production.…”

Section: Introductionmentioning

confidence: 99%

One‐pot self‐assembly and photoreduction synthesis of silver nanoparticle‐decorated reduced graphene oxide/MIL‐125(Ti) photocatalyst with improved visible light photocatalytic activity

Yuan

Wang

et al. 2016

Applied Organom Chemis

156

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e In recent years, tremendous research efforts have been made towards developing metal-organic framework (MOF)-based composites for photocatalytic applications. In this work, bipyramid-like MIL-125(Ti) frustum enwrapped with reduced graphene oxide (rGO) and dispersed silver nanoparticles (Ag NPs) was fabricated using an efficient one-pot self-assembly and photoreduction strategy. The as-obtained materials were characterized using field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, nitrogen adsorption-desorption isotherms, and X-ray photoelectron, ultraviolet-visible diffuse reflectance and photoluminescence spectroscopies. It is found that the as-prepared Ag/rGO/MIL-125(Ti) ternary hybrids have large surface area, microporous structure, enhanced visible light absorption and prolonged lifetime of charge carriers. Compared with pure MIL-125(Ti) and its binary counterparts, the ternary composite exhibits more efficient photocatalytic performance for Rhodamine B (RhB) degradation from water under visible light irradiation. The photodegradation rate of RhB on Ag/rGO/MIL-125(Ti) is 0.0644 min À1, which is 1.62 times higher than that of the pure MIL-125(Ti). The improved photocatalytic performance is ascribed to the indirect dye photosensitization, the Ag NP localized surface plasmon resonance, the Ti 3+ -Ti 4+ intervalence electron transfer and the synergistic effect among MIL-125(Ti), Ag NPs and rGO. Ag NPs serve as an efficient 'electron reservoir' and rGO as an electron transporter and collector. Therefore, this work provides a new pathway into the design of MOF-based composites for application in environmental and energy fields.

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“…Over past years, composites of metal organic frameworks (MOFs) and inorganic nanomaterials have attracted much more attention for photocatalysis not only because of the significant charge separation by inducing charge carrier transfer at the interface of the composites, but also due to the porous structure and high specific surface areas of MOFs, which lead to high loading capability and avoiding the agglomeration of inorganic nanomaterials . To date, such inorganic nanomaterials mainly focus on SnO 2 , PbO, ZnO, g‐C 3 N 4 and TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of WO_2.72/UiO‐66 nanocomposites and effects of WO_2.72 ratio on photocatalytic performance: judgement of the optimal content and mechanism study

Zhang

Yang

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Recently, hybrid nanocomposites based on metal–organic frameworks (MOFs) and inorganic nanomaterials have been actively investigated as a potential technology for solving the environmental pollution problems. However, to our knowledge, there have been no composites of WO2.72 and MOFs reported until now. In this study, highly dispersed WO2.72 nanorods were first grown in situ upon UiO‐66 through a hydrothermal process. RESULTS The optimal content of the WO2.72 (30 wt%) could be intuitively judged by field emission scanning electron microscopy. The degradation efficiency of methyl orange (MO) in photocatalysis with 30 wt% WO2.72 loading exhibited better photocatalytic activity than bare UiO‐66, WO2.72 and other WO2.72 loadings. The enhancement of photocatalytic activity over hybrid WO2.72/UiO‐66 can be ascribed to the difference of conduction band between WO2.72 and UiO‐66, which could cause the photoelectron inject to the WO2.72 from UiO‐66, and the lone pair electrons of –OH and –COOH groups of the UiO‐66, which not only repel excited electrons but also attract photogenerated holes. CONCLUSIONS The enhanced separation of photoexcited carriers between WO2.72 and UiO‐66 led to the enhancement of photocatalytic activity. The photocatalytic reaction mechanism for MO treatment was also studied. © 2018 Society of Chemical Industry

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A Clean and General Strategy To Decorate a Titanium Metal–Organic Framework with Noble-Metal Nanoparticles for Versatile Photocatalytic Applications

Cited by 154 publications

References 35 publications

Metal–Organic Framework (MOF) Compounds: Photocatalysts for Redox Reactions and Solar Fuel Production

Metal–Organic Framework (MOF) Compounds: Photocatalysts for Redox Reactions and Solar Fuel Production

One‐pot self‐assembly and photoreduction synthesis of silver nanoparticle‐decorated reduced graphene oxide/MIL‐125(Ti) photocatalyst with improved visible light photocatalytic activity

Fabrication of WO_2.72/UiO‐66 nanocomposites and effects of WO_2.72 ratio on photocatalytic performance: judgement of the optimal content and mechanism study

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A Clean and General Strategy To Decorate a Titanium Metal–Organic Framework with Noble-Metal Nanoparticles for Versatile Photocatalytic Applications

Cited by 154 publications

References 35 publications

Metal–Organic Framework (MOF) Compounds: Photocatalysts for Redox Reactions and Solar Fuel Production

Metal–Organic Framework (MOF) Compounds: Photocatalysts for Redox Reactions and Solar Fuel Production

One‐pot self‐assembly and photoreduction synthesis of silver nanoparticle‐decorated reduced graphene oxide/MIL‐125(Ti) photocatalyst with improved visible light photocatalytic activity

Fabrication of WO2.72/UiO‐66 nanocomposites and effects of WO2.72 ratio on photocatalytic performance: judgement of the optimal content and mechanism study

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Fabrication of WO_2.72/UiO‐66 nanocomposites and effects of WO_2.72 ratio on photocatalytic performance: judgement of the optimal content and mechanism study