MIL-125-NH2@TiO2 Core–Shell Particles Produced by a Post-Solvothermal Route for High-Performance Photocatalytic H2 Production

Zhang, Bingxing; Zhang, Jianling; Tan, Xiuniang; Shao, Dan; Shi, Jinbiao; Zheng, Lirong; Zhang, Jing; Yang, Guanying; Han, Buxing

doi:10.1021/acsami.8b01462

Cited by 166 publications

(84 citation statements)

References 39 publications

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“…In order to investigate the charge carrier separation rate of Ti‐MOF and M 2+ ions coordinated MOFs, the solid‐state photoluminescence (PL) study was performed and results are illustrated in Figure c. It can be seen that the pristine Ti‐MOF displays the strong emission peak at 430 nm as similar to the previous report . M 2+ ions coordinated MOFs exhibits less PL emission intensity than the pristine Ti‐MOF, demonstrating the rapid charge carrier separation through the coordinated M 2+ ions.…”

Section: Resultssupporting

confidence: 69%

Amine Functionalized Metal–Organic Framework Coordinated with Transition Metal Ions: d–d Transition Enhanced Optical Absorption and Role of Transition Metal Sites on Solar Light Driven H₂ Production

Karthik

Neppolian

Vinu

et al. 2019

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Design and development of efficient photocatalysts for H2 production from water and sunlight have gained significant attention as the solar assisted approach is considered to be a promising approach for the generation of clean fuel. However, the poor charge carrier separation and light harvesting ability of existing photocatalysts limits the efficiency of photoconversion of water. In this work, the synthesis of transition metal ions (M2+ = Co2+, Cu2+, and Ni2+) coordinated with Ti‐metal organic frameworks (Ti‐MOFs) through a simple post‐synthetic coordination method for efficient solar light‐driven H2 production is reported. Notably, coordination of M2+ ions with Ti‐MOF significantly improves the optical absorption by d–d transitions and the multimetal sites facilitate the fast charge carrier separation, thereby enhancing the solar light‐driven H2 production activity. Very interestingly, the rate of solar light‐driven H2 production is varied with respect to different metal ions coordination due to the position of d–d bands absorption in the solar spectrum, and the complexing tendency of M2+ ions with sacrificial electron donors. A maximum solar H2 production rate of 1583.55 µmol h−1 g−1 is achieved with a Cu2+ coordinated Ti‐MOF, which is ≈13 fold higher than that of the pristine Ti‐MOF.

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Section: Resultssupporting

confidence: 69%

Amine Functionalized Metal–Organic Framework Coordinated with Transition Metal Ions: d–d Transition Enhanced Optical Absorption and Role of Transition Metal Sites on Solar Light Driven H₂ Production

Karthik

Neppolian

Vinu

et al. 2019

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“…It is also possible that the electrons from RhB* can get directly injected into Pt and produce H 2 , as shown in Figure 17b [219]. Similarly, there have been other TiO 2 /MOFs-based photocatalytic systems reported [220][221][222][223][224][225]. The first black-TiO2 was produced by Chen et al with band gap energy of around 1.0 eV via high-pressure hydrogenation process in the crystalline TiO2 [235].…”

Section: Metal-organic Framework-tio 2 Compositesmentioning

confidence: 91%

Insights into the TiO2-Based Photocatalytic Systems and Their Mechanisms

2019

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Photocatalysis is a multifunctional phenomenon that can be employed for energy applications such as H2 production, CO2 reduction into fuels, and environmental applications such as pollutant degradations, antibacterial disinfection, etc. In this direction, it is not an exaggerated fact that TiO2 is blooming in the field of photocatalysis, which is largely explored for various photocatalytic applications. The deeper understanding of TiO2 photocatalysis has led to the design of new photocatalytic materials with multiple functionalities. Accordingly, this paper exclusively reviews the recent developments in the modification of TiO2 photocatalyst towards the understanding of its photocatalytic mechanisms. These modifications generally involve the physical and chemical changes in TiO2 such as anisotropic structuring and integration with other metal oxides, plasmonic materials, carbon-based materials, etc. Such modifications essentially lead to the changes in the energy structure of TiO2 that largely boosts up the photocatalytic process via enhancing the band structure alignments, visible light absorption, carrier separation, and transportation in the system. For instance, the ability to align the band structure in TiO2 makes it suitable for multiple photocatalytic processes such as degradation of various pollutants, H2 production, CO2 conversion, etc. For these reasons, TiO2 can be realized as a prototypical photocatalyst, which paves ways to develop new photocatalytic materials in the field. In this context, this review paper sheds light into the emerging trends in TiO2 in terms of its modifications towards multifunctional photocatalytic applications.

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“…MIL-125-NH 2 @TiO 2 , fabricated by another group using a post-solvothermal route, also showed enhanced photocatalytic hydrogen production performance. [109] Combined with other semiconductors, titanium-based MOFs can also work as a co-catalyst for hydrogen evolution production. For example, a series of heterostructural ZnIn 2 S 4 @NH 2 -MIL-125(Ti) nanocomposites had been fabricated by Liu and co-workers.…”

Section: (18 Of 28)mentioning

confidence: 99%

“…MIL‐125‐NH 2 @TiO 2 , fabricated by another group using a post‐solvothermal route, also showed enhanced photocatalytic hydrogen production performance. [ 109 ]…”

Section: Photocatalytic Applicationsmentioning

confidence: 99%

Titanium‐Based MOF Materials: From Crystal Engineering to Photocatalysis

et al. 2020

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Titanium (Ti)‐based metal–organic frameworks (MOFs) have attracted intensive attention due to the low toxicity, high earth's crust abundance, and unique photocatalytic properties of Ti elements. Great efforts have been devoted to the synthesis of novel architectures and their potential applications involving photocatalysis. However, Ti‐MOFs are still very scarce owing to their challenges in controlling the Ti chemistry in the reaction system. Until now, some significant results have been achieved, which may shed new insight into the future investigation of Ti‐MOFs. Herein, some representative researches in Ti‐MOFs are summarized and reviewed from the following four aspects: first, various synthetic strategies for preparing Ti‐MOFs are introduced; second, diverse structures containing multi‐connected ligands are presented in detail; third, the potential photocatalytic applications of Ti‐based MOFs involving H2 production, CO2 reduction, H2O2 production, N2 fixation, remediation of organic and inorganic pollutants, as well as organic transformation reaction and photocatalytic sensors are discussed; finally, perspectives on current challenges and emerging opportunities in this research field are discussed. Through summarizing this specific type of MOF, this review is expected to stimulate researchers’ interest for in‐depth investigation of novel structures synthesis, as well as new applications and concepts in these intriguing fields.

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MIL-125-NH₂@TiO₂ Core–Shell Particles Produced by a Post-Solvothermal Route for High-Performance Photocatalytic H₂ Production

Cited by 166 publications

References 39 publications

Amine Functionalized Metal–Organic Framework Coordinated with Transition Metal Ions: d–d Transition Enhanced Optical Absorption and Role of Transition Metal Sites on Solar Light Driven H₂ Production

Amine Functionalized Metal–Organic Framework Coordinated with Transition Metal Ions: d–d Transition Enhanced Optical Absorption and Role of Transition Metal Sites on Solar Light Driven H₂ Production

Insights into the TiO2-Based Photocatalytic Systems and Their Mechanisms

Titanium‐Based MOF Materials: From Crystal Engineering to Photocatalysis

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MIL-125-NH2@TiO2 Core–Shell Particles Produced by a Post-Solvothermal Route for High-Performance Photocatalytic H2 Production

Cited by 166 publications

References 39 publications

Amine Functionalized Metal–Organic Framework Coordinated with Transition Metal Ions: d–d Transition Enhanced Optical Absorption and Role of Transition Metal Sites on Solar Light Driven H2 Production

Amine Functionalized Metal–Organic Framework Coordinated with Transition Metal Ions: d–d Transition Enhanced Optical Absorption and Role of Transition Metal Sites on Solar Light Driven H2 Production

Insights into the TiO2-Based Photocatalytic Systems and Their Mechanisms

Titanium‐Based MOF Materials: From Crystal Engineering to Photocatalysis

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Product

Resources

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MIL-125-NH₂@TiO₂ Core–Shell Particles Produced by a Post-Solvothermal Route for High-Performance Photocatalytic H₂ Production

Amine Functionalized Metal–Organic Framework Coordinated with Transition Metal Ions: d–d Transition Enhanced Optical Absorption and Role of Transition Metal Sites on Solar Light Driven H₂ Production

Amine Functionalized Metal–Organic Framework Coordinated with Transition Metal Ions: d–d Transition Enhanced Optical Absorption and Role of Transition Metal Sites on Solar Light Driven H₂ Production