Advanced Electrocatalysts Based on Metal–Organic Frameworks

Zheng, Fuqin; Zhang, Ziwei; Zhang, Chunmei; Chen, Wei

doi:10.1021/acsomega.9b03295

Cited by 58 publications

(30 citation statements)

References 36 publications

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“…[ 68 ] Overall, the synergy between conductive polymers and MOFs has been explored in the context of potential electrocatalysis applications. [ 72 ]…”

Section: Resultsmentioning

confidence: 99%

“…[68] Overall, the synergy between conductive polymers and MOFs has been explored in the context of potential electrocatalysis applications. [72] For the Fe-BTC/PpPDA, the composites' sensitivity for the detection of H 2 O 2 was reduced to half of the sensitivity of Fe-BTC. Also, despite that the selected polymer is a structural analogue of polyaniline, a highly conductive polymer, PpPDA unfortunately offers a relatively low conductivity of 10 -7 S m -1 .…”

Section: Electrochemical Studymentioning

confidence: 97%

See 1 more Smart Citation

An Investigation into the Intrinsic Peroxidase‐Like Activity of Fe‐MOFs and Fe‐MOFs/Polymer Composites

Thakur

Karve

Sun

et al. 2021

Adv Materials Technologies

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The quest for developing materials that provide a perfect trade‐off between factors such as enzyme‐like response, stability, and low cost has been a long‐standing challenge in the field of biosensing. Metal‐organic frameworks (MOFs) and their composites have emerged as promising candidates for biosensing applications due to their exceptional properties such as tunable pore size, high specific surface area, and exposed active sites. A comparative study of the intrinsic peroxidase‐like activity of five different MOF materials: Fe‐BTC, NH2‐MIL‐101(Fe), composites of Fe‐BTC with polymers polydopamine (PDA), poly p‐phenylenediamine (PpPDA), and poly(3,4‐ethylenedioxythiophene) is reported for the detection of H2O2, an important biomarker in biomedical diagnostics. The response of these materials toward H2O2 via electrochemical and colorimetric techniques is mapped and it is found that, at neutral pH, the Fe‐BTC/PEDOT composite exhibits the highest sensitivity and activity compared to other MOF materials in this study. The results indicate that the combination of unique properties of Fe‐BTC and conducting polymer PEDOT, improves the peroxidase‐like activity of the Fe‐BTC/PEDOT composite compared to the individual components. This work presents a new opportunity for easy‐to synthesize and low‐cost MOFs/conducting polymer composites for biosensing applications and provides significant insights to achieve rational design of composites with desirable functional properties

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“…[ 68 ] Overall, the synergy between conductive polymers and MOFs has been explored in the context of potential electrocatalysis applications. [ 72 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Studymentioning

confidence: 97%

An Investigation into the Intrinsic Peroxidase‐Like Activity of Fe‐MOFs and Fe‐MOFs/Polymer Composites

Thakur

Karve

Sun

et al. 2021

Adv Materials Technologies

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“…(4) The stability Stability is an important factor in long-term operation. The changes in composition, morphology, and structure could elucidate stability trends 119,120 More importantly, similar to catalytic activity, stability can be enhanced by adjusting the metal centers or organic ligands. Besides, employing metal centers with high oxidation states may also achieve this aim.…”

Section: The Challenges and Opportunities For Conductive Mofsmentioning

confidence: 99%

Conductive Metal-Organic Frameworks for Electrocatalysis：Achievements, Challenges, and Opportunities

Gao¹,

Wang²,

Li³

et al. 2020

Acta Physico Chimica Sinica

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To fulfill the demands of green and sustainable energy, the production of novel catalysts for different energy conversion processes is critical. Owing to the intriguing advantages of the intrinsic active species, tunable crystal structure, remarkable chemical and physical properties, and good stability, metal-organic frameworks (MOFs) have been extensively investigated in various electrochemical energy conversions, such as the CO2 reduction reaction, N2 reduction reaction, oxygen evolution reaction, hydrogen evolution reaction, and oxygen reduction reaction. More importantly, it is feasible to change the chemical environments, pore sizes, and porosity of MOFs, which will theoretically facilitate the diffusion of reactants across the open porous networks, thereby improving the electrocatalytic performance. However, owing to the high energy barriers of charge transfer and limited free charge carriers, most MOFs show poor electrical conductivity, thus limiting their diverse applications. As reported previously, MOFs were used as a porous substrate to confine the growth of nanoparticles or co-doped electrocatalysts after annealing. The conductive MOFs can combine the advantages of conventional MOFs with electronic conductivity, which significantly enhance the electrocatalytic performance. In addition, conductive MOFs can achieve conductivity via electronic or ionic routes without post-annealing treatment, thereby extending their potential applications. Different synthesis strategies have recently been developed to endow MOFs with electrical conductivity, such as post-synthesis modification, guest molecule introduction, and composite formatting. The performance of conductive MOFs can even outperform those of commercial RuO2 catalysts or Pt-group catalysts. However, it is difficult to endow most MOFs with high conductivity. This review summarizes the mechanisms of constructing conductive MOFs, such as redox hopping, through-bond pathways, through-space pathways, extended conjugation, and guest-promoted transport. Synthetic methods, including hydro/solvothermal synthesis and interface-assisted synthesis, are introduced. Recent advances in the use of conductive MOFs as heterogeneous catalysts in electrocatalysis have been comprehensively elucidated. It has been reported that conductive MOFs can demonstrate considerable catalytic activity, selectivity, and stability in different electrochemical reactions, revealing the immense potential for future displacement of Pt-group catalysts. Finally, the challenges and opportunities of conductive MOFs in electrocatalysis are discussed. Based on systematic synthesis strategies, more conductive MOFs can be constructed for electrocatalytic reactions. In addition, the morphology and structure of conductive MOFs, which can change the electrochemical accessibility between substrates and MOFs, are also crucial for catalysis, and thus, they should be extensively studied in the future. It is believed that a breakthrough for high-performance conductive MOF-based electrocatalysts could be ac...

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“…Closely related review articles that summarize MOF-based electrocatalysts have appeared previously. [27][28][29] Very recently, heterotrimetallic MOFs that show electrocatalytic oxygen evolution have also been reviewed. 30,31 This review article focuses on summarizing the synthesis methodologies of heterometallic CPs and their utility for their various 'heterogeneous' electrocatalytic activities from the viewpoint of coordination chemistry.…”

Section: Introductionmentioning

confidence: 99%