Tetrazole-functionalized two-dimensional covalent organic frameworks coordinated with metal ions for electrocatalytic oxygen evolution reaction

Liang, Ying; Xia, Tian; Wu, Zhuangzhuang; Yang, Yingjie; Li, Yongpeng; Sui, Zhuyin; Li, Chaokun; Fan, Ruimei; Tian, Xinlong; Chen, Qi

doi:10.1016/j.mtchem.2022.100777

Cited by 14 publications

(24 citation statements)

References 36 publications

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“…[ 9,10 ] Recently, COFs have attracted extensive research interest in the field of water electrolysis due to their directional structure and modularizable nature. [ 11–14 ] Unfortunately, their electrocatalytic efficiency is lower than expected, which might result from: the inability of ions and electrons to access the internal active sites that buried deeply inside the one dimensional (1D) channels of COFs; [ 15 ] uncontrolled structural defects caused by conventional solution polymerization. [ 16 ] From a theoretical perspective, growing single‐crystal COFs is a strategy of interest for improving the electrochemical performance of COFs‐based electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Well‐Defined Conjugated Reticular Oligomer “Blood Cells” and Conducting Polymer “Neurons” Constructing “Muscle”‐Biomimetic Electrocatalysts for Water Electrolysis

Zhang

Liu

Zhai

et al. 2022

Adv Funct Materials

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Covalent organic frameworks (COFs) provide a tunable platform for water electrolysis. However, it is difficult to perform explicitly structural characterization for COFs due to the uncontrollable polymerization via the solvothermal method, which hinders the clear-cut exploration of the COFs' structureperformance relationship in further applications. Here, the well-defined conjugated reticular oligomers ( CROs) are designed for the first time using an aqueous micellar strategy. The CROs have definite chemical structure and can be regarded as conjugated oligomers or defect-free COFs segment. Using CROs and conducting polymer, three "muscle"-biomimetic electrocatalysts are engineered for splitting water to H 2 and O 2 . The self-assembled "muscle"like structures guarantee fully exposed active sites, fast electron conduction and mass transfer (H 2 O/H 2 /O 2 ). The "muscle"-biomimetic poly(3,4-ethylenedioxythiophene) (PEDOT)/CROs-Ru exhibit superior electrochemical performance than the COFs-Ru. In particular, the mass activity and turnover frequency (TOF) value of PEDOT/CRO OH -8-Ru are ≈95 and 38 times that of the counterpart bulk Py-COF OH . The theoretical calculation and the experimental results demonstrate that the CROs endow the electrocatalyst with an electron-rich surface and enhance carrier mobility. The enhanced water electrolysis activity of CROs-Ru can be attributed to the Schottky heterojunction suppressing the electron backflow, which facilitates the adsorption of hydrogen protons and hydroxides.

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Section: Introductionmentioning

confidence: 99%

Well‐Defined Conjugated Reticular Oligomer “Blood Cells” and Conducting Polymer “Neurons” Constructing “Muscle”‐Biomimetic Electrocatalysts for Water Electrolysis

Zhang

Liu

Zhai

et al. 2022

Adv Funct Materials

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“…Similarly, the COF-TpDb-TZ-Co formed by the coordination of tetrazolefunctionalized COF-TpDb-TZ with Co(II) is an OER catalyst under alkaline conditions, with a Tafel slope of 82 mV dec À1 , which is much lower than that of COF-TpDb-TZ (477 mV dec À1 ). 531 The synergistic effect of Ni(II) and other metal ions can optimize the OER kinetics. 525 For example, the Tafel slope of the heterobimetallic NiFe-Salphen-COF is 53 mV dec À1 , which is lower than that of Ni-Salphen-COF (72 eV dec À1 ).…”

Section: Electrocatalysismentioning

confidence: 99%

“…Similarly, the COF-TpDb-TZ-Co formed by the coordination of tetrazole-functionalized COF-TpDb-TZ with Co( ii ) is an OER catalyst under alkaline conditions, with a Tafel slope of 82 mV dec −1 , which is much lower than that of COF-TpDb-TZ (477 mV dec −1 ). 531…”

Section: Application Of Metalated Cofsmentioning

confidence: 99%

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

2022

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“…Besides, it should be noted that the cobalt ions connected to COF-TpDb-TZ create many active sites for OER. 120 The detection of extremely effective and eco-friendly OER catalysts plays a crucial role in the production of wide-ranging reproducible electrochemical fuels. In this work, an iron singleatom catalyst (SAC) was loaded in Tp-Tta COF (Fe-SAC@COF) creating a unique coordination of Fe-NO in the structure.…”

Section: Electrocatalytic Applicationsmentioning

confidence: 99%

“…Besides, it should be noted that the cobalt ions connected to COF-TpDb-TZ create many active sites for OER. 120…”

Section: Cofs For Catalytic Applicationsmentioning

confidence: 99%

Design, synthesis, and application of covalent organic frameworks as catalysts

Nikkhoo¹,

Mallakpour

Hussain

2023

New J. Chem.

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Tetrazole-functionalized two-dimensional covalent organic frameworks coordinated with metal ions for electrocatalytic oxygen evolution reaction

Cited by 14 publications

References 36 publications

Well‐Defined Conjugated Reticular Oligomer “Blood Cells” and Conducting Polymer “Neurons” Constructing “Muscle”‐Biomimetic Electrocatalysts for Water Electrolysis

Well‐Defined Conjugated Reticular Oligomer “Blood Cells” and Conducting Polymer “Neurons” Constructing “Muscle”‐Biomimetic Electrocatalysts for Water Electrolysis

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

Design, synthesis, and application of covalent organic frameworks as catalysts

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