biostudies-literatureWei YNational Natural Science Foundation of ChinaCity University of Hong KongHuazhong University of Science and Technology11676-11682https://www.ebi.ac.uk/biostudies/studies/S-EPMC9063528biostudies-literatureUnknown9(21)Efficient and stable non-precious metal based electrocatalysts are crucial to the hydrogen evolution reaction (HER) in renewable energy conversion. Herein, Co _<i>x</i> P nanoparticles (NPs) are uniformly embedded in N-doped TiO₂ nanotube arrays (Co _<i>x</i> P/N-TiO₂ NTAs) by low-temperature phosphorization of the precursor of metallic cobalt NPs embedded in N-doped TiO₂ NTAs (Co/N-TiO₂ NTAs) which were fabricated by phase separation of CoTiO₃ NTAs in ammonia. Owing to the abundant exposed surface active sites of Co _<i>x</i> P NPs, tight contact between the Co _<i>x</i> P NPs and TiO₂ NTAs, fast electron transfer in N-doped TiO₂, and channels for effective diffusion of ionRSC advancesN-doped TiO₂ nanotube arrays with uniformly embedded Co _<i>x</i> P nanoparticles for high-efficiency hydrogen evolution reaction.PMC90635283150078351572100515041716143400170051052015QN0712016JCTD101Gao BZheng YXia LZhang XFu JChu PKPi CSong HWei YZhang BfalseN-doped TiO₂ nanotube arrays with uniformly embedded Co _<i>x</i> P nanoparticles for high-efficiency hydrogen evolution reaction.Efficient and stable non-precious metal based electrocatalysts are crucial to the hydrogen evolution reaction (HER) in renewable energy conversion. Herein, Co _<i>x</i> P nanoparticles (NPs) are uniformly embedded in N-doped TiO₂ nanotube arrays (Co _<i>x</i> P/N-TiO₂ NTAs) by low-temperature phosphorization of the precursor of metallic cobalt NPs embedded in N-doped TiO₂ NTAs (Co/N-TiO₂ NTAs) which were fabricated by phase separation of CoTiO₃ NTAs in ammonia. Owing to the abundant exposed surface active sites of Co _<i>x</i> P NPs, tight contact between the Co _<i>x</i> P NPs and TiO₂ NTAs, fast electron transfer in N-doped TiO₂, and channels for effective diffusion of ion2019-01-01T00:00:00Z2019 Apr2025-04-04T20:21:53.681Z2025-04-04T20:21:53.681ZS-EPMC90635283551702810.1039/c9ra01184f