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oai:figshare.com:article/34050174 2026-10-01T18:07:08Z category_1 category_146 category_7 category_8 category_21 category_24 category_272 category_873 category_734 portal_63 item_type_6 month_year_10_2026

Quaternization-Induced Metalloporphyrin-Based Covalent Organic Polymer/MWCNT Hybrid for Bifunctional Water Splitting Aijian Wang (9592575) Pengfei Chen (462170) Jiacheng Hou (23749235) Cheng Yuan (160315) Long Zhao (408020) Weihua Zhu (388099) Wei Zhao (14321) Biophysics Space Science Medicine Microbiology Biotechnology Evolutionary Biology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Biological Sciences not elsewhere classified quantitative faradaic efficiency poor electrical conductivity oxygen evolution reaction overall water splitting hydrogen evolution reaction coordinated metal center based cop hybrids attracted considerable attention abundant functional sites walled carbon nanotubes porous polymer framework two materials reveals mwcnts requires overpotentials induced polymerization strategy induced metalloporphyrin effective strategy conductive polymer carbon architectures work demonstrates tunable structures single architecture practical application often limited mwcnts ). mwcnt hybrid important influence high porosity excellent durability electrode electrolyzer direct comparison conductive metalloporphyrin cell voltage 56 v 241 mv 117 mv Covalent organic polymers (COPs) have attracted considerable attention as electrocatalysts because of their tunable structures, high porosity, and abundant functional sites, yet their practical application is often limited by poor electrical conductivity. Herein, conductive metalloporphyrin-based COP hybrids were synthesized through a quaternization-induced polymerization strategy in the presence of multi-walled carbon nanotubes (MWCNTs). The resultant FeTPyPCOP@MWCNTs and NiTPyPCOP@MWCNTs integrate metalloporphyrin coordination sites, a porous polymer framework, and a conductive carbon network within a single architecture. A direct comparison between the two materials reveals that FeTPyPCOP@MWCNTs exhibit superior electrocatalytic activity toward water splitting, highlighting the important influence of the coordinated metal center. FeTPyPCOP@MWCNTs requires overpotentials of only 117 mV for the hydrogen evolution reaction (HER) and 241 mV for the oxygen evolution reaction (OER) at 10 mA cm^–2. In a two-electrode electrolyzer, it delivers 10 mA cm^–2 at a cell voltage of 1.56 V, together with excellent durability and near-quantitative Faradaic efficiency. This work demonstrates that combining metalloporphyrin coordination environments with conductive polymer/carbon architectures is an effective strategy for developing efficient bifunctional electrocatalysts for overall water splitting. 2026-10-01T00:00:00Z Text Journal contribution 10.1021/acs.inorgchem.6c03643.s001 https://figshare.com/articles/journal_contribution/Quaternization-Induced_Metalloporphyrin-Based_Covalent_Organic_Polymer_MWCNT_Hybrid_for_Bifunctional_Water_Splitting/34050174 CC BY-NC 4.0