Boosting visible-light hydrogen evolution of covalent-organic frameworks by introducing Ni-based noble metal-free co-catalyst

Dong, Hong; Meng, Xiangtai; Zhang, Xin; Tang, Hongliang; Liu, Jun-Wang; Wang, Jianhui; Wei, Jin‐Zhi; Zhang, Fengming; Bai, Linlu; Sun, Xiaojun

doi:10.1016/j.cej.2019.122342

Cited by 135 publications

(40 citation statements)

References 70 publications

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“…Considering that nickel‐functionalized COFs are still in their infancy, as well as the importance of employing earth abundant metals over precious metals as catalysts, we expect that this work will highlight that nickel‐functionalized COFs have the potential of being employed in heterogeneous catalysis. The stable nickel−COF bond, its homogeneous dispersion throughout the framework, its recyclability and the absence of leaching are factors that make this kind of material promising for a variety of applications in catalysis, and we expect a bright future for Ni@COF materials.…”

Section: Discussionmentioning

confidence: 99%

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Design, Synthesis and Characterization of Nickel‐Functionalized Covalent Organic Framework NiCl@RIO‐12 for Heterogeneous Suzuki–Miyaura Catalysis

Maia

Berg

Ritleng

et al. 2020

Chemistry A European J

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As eries of nickel-decorated covalento rganic frameworks, NiCl@RIO-12, were prepared using the post-synthetic modification strategy,t hat is, by reactingN iCl 2 with pristine RIO-12 under alkaline conditions. Interestingly,t hey retained their crystallinity andt he amount of nickel incorporated could be tuned from 3.6 to 25 wt %a ccording to the reaction conditions. The incorporation of ah igher amount of nickel in NiCl@RIO-12 consistently led to al ower Brunauer-Emmett-Teller surfacea rea. Additionally,n oa gglomeration of nickel particles was found and ar elativelyh omogeneous dispersion of nickel could be ascertained by SEM and TEM-EDS. The paramagnetic material exhibited promising catalytic activity in Suzuki-Miyaura cross-couplingu nder microwave heating. Thus,N iCl@RIO-12 notably demonstrated good thermal stability and its recyclability showed no substantial loss of activity after 3cycles.

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Section: Discussionmentioning

confidence: 99%

“…Recently, Dong et al. reported outstanding photocatalytic activity for H 2 production by a visible‐light active nickel hydroxide‐modified COF (TpPa‐2) …”

Section: Introductionmentioning

confidence: 99%

Design, Synthesis and Characterization of Nickel‐Functionalized Covalent Organic Framework NiCl@RIO‐12 for Heterogeneous Suzuki–Miyaura Catalysis

Maia

Berg

Ritleng

et al. 2020

Chemistry A European J

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“…Except for Pt NPs as co‐catalysts, transition‐metal species can be introduced to COF as co‐catalysts. [ 84–87 ] For instance, the system consisting of N 2 –COF and molecular cobaloxime, chloro(pyridine)‐cobaloxime(III) (Co‐1), exhibits a high hydrogen production rate of 782 μmol g −1 h −1 ( Figure ). [ 84 ] Another system constructed by TpDTz and a cheap nickel‐thiolate cluster can achieve a hydrogen production rate of 941 μmol g −1 h −1 .…”

Section: Photocatalytic Applications Of 2d Cofmentioning

confidence: 99%

Two‐Dimensional Covalent‐Organic Frameworks for Photocatalysis: The Critical Roles of Building Block and Linkage

et al. 2020

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Covalent organic frameworks (COFs) are a class of crystalline porous materials which contain organic build blocks linked via covalent bonds to form ordered and periodic structures. In recent years, 2D COFs have been developed as promising heterogeneous photocatalysts due to their extended π‐conjugated skeletons, high surface area, tunable structure, regular pore structure, and high crystallinity. Herein, recent advances in the design and synthesis of 2D COFs for photocatalysts are surveyed, the illustration of the structural features and synthetic strategy is focused on, and the relationship between the construction and property of 2D COFs for photocatalytic water splitting, CO2 reduction, organic transformation, and degradation of organic pollutants is elucidated. This overview is expected to provide clues to rational design and synthesis of ultra‐stable, high crystalline, and high‐performance 2D COFs for photocatalytic applications.

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“…Precious metals are expensive and have very low reserves, so it is necessary to look for the same highly efficient non-precious metals as a substitute for precious metals Xing et al, 2017;Kang et al, 2019;Wang et al, 2019b;Chen et al, 2020). It has been reported that a compound of a transition metal Ni was used as a cocatalyst to greatly enhance photocatalytic activity (Chen et al, 2017(Chen et al, , 2019Ma et al, 2017;Digraskar et al, 2019;Dong et al, 2020). Therefore, it is possible to introduce NiS 2 into theNaNbO 3 /CdS system to synthesize ternary composites, further facilitating the separation of charge carries and increasing hydrogen evolution rate.…”

Section: Introductionmentioning

confidence: 99%

Efficient and Stable Photocatalytic Hydrogen Evolution Activity of Multi-Heterojunction Composite Photocatalysts: CdS and NiS2 Co-modified NaNbO3 Nanocubes

Zhu

Niu

et al. 2020

Front. Chem.

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In this study, a NaNbO 3 /CdS/NiS 2 ternary composite photocatalyst containing no precious metals was successfully prepared by a simple hydrothermal method. The prepared ternary photocatalyst has a significant improvement in photocatalytic performance of hydrogen production from water splitting under visible light irradiation. The best sample NCN40% hydrogen production rate is 4.698 mmol g −1 h −1 , which is about 24.7 times that of pure CdS sample. In addition, the stability of the composite catalyst in the long-term photocatalytic hydrogen production cycle is also improved. The reason for the enhanced hydrogen production performance may be the optimization of the microstructure of the catalyst and the reduction of photogenerated electron-hole recombination. The construction of multi-heterojunctions (NaNbO 3-CdS, CdS-NiS 2 , and NaNbO 3-NiS 2) helps to reduce the recombination of carriers. Furthermore, the in-situ-formed NiS 2 nanoparticles can serve as active sites for hydrogen evolution. All of these factors induced the improved photocatalytic activity of the as-prepared ternary photocatalyst.

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Boosting visible-light hydrogen evolution of covalent-organic frameworks by introducing Ni-based noble metal-free co-catalyst

Cited by 135 publications

References 70 publications

Design, Synthesis and Characterization of Nickel‐Functionalized Covalent Organic Framework NiCl@RIO‐12 for Heterogeneous Suzuki–Miyaura Catalysis

Design, Synthesis and Characterization of Nickel‐Functionalized Covalent Organic Framework NiCl@RIO‐12 for Heterogeneous Suzuki–Miyaura Catalysis

Two‐Dimensional Covalent‐Organic Frameworks for Photocatalysis: The Critical Roles of Building Block and Linkage

Efficient and Stable Photocatalytic Hydrogen Evolution Activity of Multi-Heterojunction Composite Photocatalysts: CdS and NiS2 Co-modified NaNbO3 Nanocubes

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