S型0.5Co-BiOCl/Co3O4：异质结与自旋极化协同调控电荷分离增强光降解性能

doi:10.1016/j.actphy.2026.100401

Abstract

Abstract: Spin polarization control can suppress the recombination of photogenerated carriers at the intrinsic electron spin level, significantly enhancing charge separation efficiency. This study proposes a synergistic strategy combining spin polarization with an S-scheme heterojunction. Specifically, Co doping is introduced into BiOCl (BOC) nanosheets via a coupled hydrothermal-calcination method to induce spin polarization. Meanwhile, the material is coupled with cubic Co₃O₄ to construct a 0.5Co-BOC/Co₃O₄ Sscheme heterojunction. Characterization results from density functional theory (DFT) calculations, vibrating sample magnetometer (VSM), and Kelvin probe force microscopy (KPFM) collectively confirm that Co doping induces asymmetric occupation of spin-polarized electronic states near the Fermi level of BOC. This narrows the bandgap and promotes charge transfer. The work function difference drives interfacial electrons to transfer directionally from Co₃O₄ to 0.5Co-BOC, forming a built-in electric field. This built-in electric field drives the spatial directional separation of photogenerated carriers. Meanwhile, spin polarization regulates the spin states of carriers and suppresses spinmatched recombination. Their synergy achieves dual regulation of “spatial separation + spin-forbidden effect”, significantly enhancing carrier separation efficiency and interfacial transport kinetics. Under optimal conditions, the degradation rate of ciprofloxacin (CIP) reaches 95.4% within 80 min. This is 1.50 times that of pristine BOC and 4.79 times that of pristine Co₃O₄. Liquid chromatography-mass spectrometry (LC-MS) and toxicity estimation software tool (T.E.S.T.) assessments indicate that CIP is degraded stepwise via multiple pathways, with significantly reduced toxicity of the intermediate products. This study elucidates the mechanism of synergistic enhancement of carrier separation by spin polarization and the built-in electric field, providing new insights for designing efficient photocatalytic systems.

Key words: Spin polarization, Co-doping, S-scheme heterojunction, Photodegradation, Built-in electric field

Ying Li, Zhiling Huang, Tianhui Yu, Yue Meng, Zheming Ni, Shengjie Xia. S-scheme 0.5Co-BiOCl/Co₃O₄: synergistic regulation of charge separation by heterojunction and spin polarization for enhanced photodegradation performance[J]. Acta Phys. -Chim. Sin. 2026, (), 100401. doi: 10.1016/j.actphy.2026.100401

References

[1] S. Chen, J. Fu, J. Qiu, G. Chang, S. Hao, Acta Phys.-Chim. Sin. 42(2026) 100135, https://doi.org/10.1016/j.actphy.2025.100135.
[2] R. Kumar, A. Sudhaik, A.A. Pawaz Khan, V.-H. Nguyen, A. Singh, P. Singh, S. Thakur, P. Raizada, Acta Phys.-Chim. Sin. 41(2025) 100150, https://doi.org/10.1016/j.actphy.2025.100150.
[3] G. Tang, J. Zhang, C. Bie, X. Zheng, C. Jiang, J. Yu, Adv. Mater. 37(2025) e14576, https://doi.org/10.1002/adma.202514576.
[4] A. Meng, X. Wu, Z. Lu, M. Gu, W. Zhong, Y. Su, J. Yu, Angew. Chem. Int. Ed. 65(2026) e25871, https://doi.org/10.1002/anie.202525871.
[5] M. Sayed, K. Qi, X. Wu, L. Zhang, H. García, J. Yu, Chem. Soc. Rev. 54(2025) 4874, https://doi.org/10.1039/D4CS01091D.
[6] W. Zeng, Y. Dong, X. Ye, Z. Zhang, T. Zhang, X. Guan, L. Guo, Chin. Chem. Lett. 35(2024) 109252, https://doi.org/10.1016/j.cclet.2023.109252.
[7] M. Sayed, L. Zhang, H. García, H. Yu, J. Yu, Acc. Chem. Res. 59(2026) 1138, https://doi.org/10.1021/acs.accounts.5c00899.
[8] K. Xu, W. Zhu, M. Sayed, S. Han, Chin. J. Catal. 83(2026) 24, https://doi.org/10.1016/S1872- 2067(26)64988-1.
[9] X. Wu, M. Sayed, G. Wang, W. Yu, B. Zhu, Adv. Mater. 38(2026) e11322, https://doi.org/10.1002/adma.202511322.
[10] S. Li, X. Li, Y. Liu, P. Zhang, J. Zhang, B. Zhang, Chin. J. Catal. 72(2025) 130, https://doi.org/10.1016/S1872-2067(25)64652-3.
[11] M. Ai, L. Pan, C. Shi, Z.-F. Huang, X. Zhang, W. Mi, J.-J. Zou, Nat. Commun. 14(2023) 4562, https://doi.org/10.1038/s41467-023-40367-x.
[12] L. Pan, M. Ai, C. Huang, L. Yin, X. Liu, R. Zhang, S. Wang, Z. Jiang, X. Zhang, J.-J. Zou, et al. Nat. Commun. 11(2020) 418, https://doi.org/10.1038/s41467-020-14333-w.
[13] B. Liu, J. Zhang, H. Li, B. Cheng, C. Bie, Acta Phys.-Chim. Sin. 41(2025) 100121, https://doi.org/10.1016/j.actphy.2025.100121.
[14] K. Sun, Y. Huang, Q. Wang, W. Zhao, X. Zheng, J. Jiang, H.-L. Jiang, J. Am. Chem. Soc. 146(2024) 3241, https://doi.org/10.1021/jacs.3c11446.
[15] B.E.R. Snyder, P. Vanelderen, M.L. Bols, S.D. Hallaert, L.H. Böttger, L. Ungur, K. Pierloot, R.A. Schoonheydt, B.F. Sels, E.I. Solomon, Nature 536(2016) 317, https://doi.org/10.1038/nature19059.
[16] Y. Li, Z. Wang, Y. Wang, A. Kovács, C. Foo, R.E. Dunin-Borkowski, Y. Lu, R.A. Taylor, C. Wu, S.C.E. Tsang, Energy Environ. Sci. 15(2022) 265, https://doi.org/10.1039/D1EE02222A.
[17] T. Sun, K. Wang, Y.-X. Du, J.-G. Chen, X.-P. Li, Z.-H. He, X. Hao, W. Wang, H. Wang, Z.-T. Liu, Appl. Catal. B Environ. Energy 381(2026) 125849, https://doi.org/10.1016/j.apcatb.2025.125849.
[18] Q. Xie, H. Huang, C. Zhang, H. Shi, J. Clean. Prod. 466(2024) 142886, https://doi.org/10.1016/j.jclepro.2024.142886.
[19] X. Wang, B. Hu, Y. Li, Z. Yang, G. Zhang, Chin. J. Catal. 66(2024) 257, https://doi.org/10.1016/S1872-2067(24)60120-8.
[20] T.H. Kim, K. Cho, S.H. Lee, J.H. Kang, H.B. Park, J. Park, Y.-H. Kim, Chem. Eng. J. 492(2024) 152095, https://doi.org/10.1016/j.cej.2024.152095.
[21] Y. Huang, Y. Zhou, Z. Yu, S. Li, Z. Yao, Y. Liu, X. Tan, Y. Wang, Y. Hou, Appl. Catal. B Environ. Energy 384(2026) 126227, https://doi.org/10.1016/j.apcatb.2025.126227.
[22] Y. Wang, Y. Xie, S. Yu, K. Yang, Y. Shao, L. Zou, B. Zhao, Z. Wang, Y. Ling, Y. Chen, Appl. Catal. B Environ. 327(2023) 122420, https://doi.org/10.1016/j.apcatb.2023.122420.
[23] K. Xu, J. Yu, W. Xia, J. Zhang, S. Han, Acta Phys.-Chim. Sin. 42(2026) 100211, https://doi.org/10.1016/j.actphy.2025.100211.
[24] S. Zhou, D. Wen, W. Zhong, J. Zhang, Y. Su, A. Meng, J. Mater. Sci. Technol. 199(2024) 53, https://doi.org/10.1016/j.jmst.2024.02.048.
[25] J. Wu, Q. Xie, C. Zhang, H. Shi, Acta Phys.-Chim. Sin. 41(2025) 100050, https://doi.org/10.1016/j.actphy.2025.100050.
[26] G. Li, C. Yang, Q. Yang, Q. Zheng, M. Li, J. Qu, G. Zhang, Chin. Chem. Lett. 37(2026) 111207, https://doi.org/10.1016/j.cclet.2025.111207.
[27] S. Wu, X. Yu, J. Zhang, Y. Zhang, Y. Zhu, M. Zhu, Chem. Eng. J. 411(2021) 128555, https://doi.org/10.1016/j.cej.2021.128555.
[28] Z. Long, Q. Li, C. Zhang, H. Shi, Acta Phys.-Chim. Sin. 41(2025) 100122, https://doi.org/10.1016/j.actphy.2025.100122.
[29] Z.-L. Liu, Y.-F. Mu, X.-R. Li, Y.-X. Feng, M. Zhang, T.-B. Lu, Appl. Catal. B Environ. Energy 366(2025) 125012, https://doi.org/10.1016/j.apcatb.2024.125012.
[30] L. Shi, Y. Wu, Z. Chang, P. Jiang, Y. Hua, Q. Shi, S. Hou, H. Wang, Appl. Catal. B Environ. Energy 378(2025) 125618, https://doi.org/10.1016/j.apcatb.2025.125618.
[31] T. Shan, S. Ke, X. Yang, X. Yang, B. Weng, L. Shen, M.-Q. Yang, Appl. Catal. B Environ. Energy 361(2025) 124602, https://doi.org/10.1016/j.apcatb.2024.124602.
[32] R.-J. You, K. Wang, H. Ma, X.-P. Li, Z. Cao, Z.-H. He, H. Wang, W. Wang, X. Lai, Z.-T. Liu, Chem. Eng. J. 510(2025) 161754, https://doi.org/10.1016/j.cej.2025.161754.
[33] M. Lin, H. Liu, H. Wang, J. Wu, H. Jiang, H. Wei, M. Ou, Z. Guan, Z. Dong, J. Qi, Chem. Eng. J. 484(2024) 149472, https://doi.org/10.1016/j.cej.2024.149472.
[34] W. Pauli, Naturwissenschaften 12(1924) 741, https://doi.org/10.1007/BF01504828.
[35] T. Zhou, Z. Luo, M. Shi, Y. Zhang, Q. Lu, M. Chen, H. Sun, T. He, J. Zhang, Y. Zhang, et al. Appl. Catal. B Environ. Energy 370(2025) 125190, https://doi.org/10.1016/j.apcatb.2025.125190.
[36] C. Cheng, H. Yi, B. Ge, P. Jiang, F. Xu, W. Shi, C. Huang, Appl. Catal. B Environ. Energy 366(2025) 125016, https://doi.org/10.1016/j.apcatb.2024.125016.
[37] Y. Su, Z. Shang, K. Yin, Q. Zhang, L. Sun, Acta Phys.-Chim. Sin. (2026) 100236, https://doi.org/10.1016/j.actphy.2026.100236.
[38] Y. Wang, R. Wen, Y. Liu, Y. Huang, X. Tan, Z. Yu, Z. Yao, Y. Hou, Appl. Catal. B Environ. Energy 382(2026) 125916, https://doi.org/10.1016/j.apcatb.2025.125916.
[39] S. Zhang, Y. Wang, Z. Wang, L. Wang, C. An, D. Xu, Acta Phys.-Chim. Sin. 41(2025) 100136, https://doi.org/10.1016/j.actphy.2025.100136.
[40] Y. Sun, W. Han, F. Zhang, H. Li, Z. Zhang, X. Zhang, B. Shen, S.-Q. Guo, T. Ma, Appl. Catal. B Environ. Energy 345(2024) 123689, https://doi.org/10.1016/j.apcatb.2023.123689.
[41] T. Peng, Y. Wang, K. Wang, K. Zhang, Y. Wang, Y. Xu, Q. Guan, G. Wang, W. Zhang, B. Wu, et al. Green Energy Environ. 10(2025) 1948, https://doi.org/10.1016/j.gee.2025.04.006.
[42] Y. Shi, Y. Shang, Y. Yang, C. Li, Y. Wang, L. Ni, B. Fu, Z.-S. Wu, L. Feng, Adv. Funct. Mater. 36(2026) e20096, https://doi.org/10.1002/adfm.202520096.
[43] W. Li, Y. Zhang, W. Ran, Y. Wang, F. Tian, F. Zhang, M. Xu, D. Zhang, N. Li, T. Yan, Appl. Catal. B Environ. Energy 351(2024) 123978, https://doi.org/10.1016/j.apcatb.2024.123978.
[44] J. Chen, Y. Meng, B. Xie, Z. Ni, S. Xia, Chin. J. Catal. 78(2025) 265, https://doi.org/10.1016/S1872- 2067(25)64808-X.
[45] G. Xia, Y. Meng, Q. Fu, Z. Huang, B. Xie, Z. Ni, S. Xia, Chem. Eng. J. 498(2024) 155849, https://doi.org/10.1016/j.cej.2024.155849.
[46] Z. Liao, L. Jiang, Y. Yang, L. Wang, W. Yang, H. Hou, Chin. J. Catal. 83(2026) 143, https://doi.org/10.1016/S1872-2067(25)64893-5.
[47] Z. Huang, Y. Meng, S. Xia, Appl. Surf. Sci. 725(2026) 165855, https://doi.org/10.1016/j.apsusc.2026.165855.
[48] H. Xiong, Y. Meng, B. Xie, Z. Ni, S. Xia, J. Environ. Chem. Eng. 14(2026) 120738, https://doi.org/10.1016/j.jece.2025.120738.
[49] T. Liu, Z. Zhou, X. Hu, X. An, P.-S. Yap, K. Papadikis, G. Dawson, Chin. J. Struct. Chem. (2026) 101014, https://doi.org/10.1016/j.cjsc.2026.101014.
[50] X. Xie, Y. Liu, X. Deng, M. Luo, Y. Liu, R. Wang, Chem. Eng. J. 521(2025) 166810, https://doi.org/10.1016/j.cej.2025.166810.
[51] Y. Dong, S. Pang, F. Zhang, D. Xu, Q. Wang, K. Wang, L. Zhang, L. Liang, Z. Ren, P. Wang, Chem. Eng. J. 478(2023) 147540, https://doi.org/10.1016/j.cej.2023.147540.
[52] L. Miao, S. Wang, H. Song, D. Li, Y. Luo, Z. Lin, Y. Dong, W. Lv, Appl. Catal. B Environ. Energy 388(2026) 126533, https://doi.org/10.1016/j.apcatb.2026.126533.
[53] H. Du, H. Li, Z. Yang, S. Xia, J. Chen, Y. Meng, L. Bian, G. Yang, G. Zhang, J. Catal. 448(2025) 116197, https://doi.org/10.1016/j.jcat.2025.116197.
[54] X. Zhou, S. Zhang, W. Liu, J. Liu, T.X. Liu, Adv. Compos. Hybrid Mater. 8(2025) 102, https://doi.org/10.1007/s42114-024-01134-8.
[55] J. Wu, H. Huang, C. Zhang, H. Shi, Y. Chen, Chem. Eng. J. 508(2025) 161137, https://doi.org/10.1016/j.cej.2025.161137.
[56] S. He, Y. Chen, J. Fang, Y. Liu, Z. Lin, Chem. Soc. Rev. 54(2025) 2154, https://doi.org/10.1039/D4CS00317A.
[57] P. Chen, Z. Zhu, Z. Liu, F. Liang, X. Zhu, Z. Bin, F. Huang, N. Wang, Y. Zhu, Chem. Eng. J. 506(2025) 159689, https://doi.org/10.1016/j.cej.2025.159689.
[58] S. Wang, X. Tao, J. Ren, Z. Li, D. Wang, H. Huang, Y. Liu, Y. Li, B. Deng, Z. Niu, Rare Met. 44(2025) 10294, https://doi.org/10.1007/s12598-025-03609-z.
[59] Y. Chen, P. Wang, F. Yu, B. Li, Chem. Eng. J. 527(2026) 171607, https://doi.org/10.1016/j.cej.2025.171607.
[60] Y. Liu, J. Jiang, T. Li, J. Li, T. Sun, H. Liu, C. Zhao, G. Yan, M. Li, M. Huo, et al., Appl. Catal. B Environ. Energy 365(2025) 124964, https://doi.org/10.1016/j.apcatb.2024.124964.

S-scheme 0.5Co-BiOCl/Co₃O₄: synergistic regulation of charge separation by heterojunction and spin polarization for enhanced photodegradation performance

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S-scheme 0.5Co-BiOCl/Co3O4: synergistic regulation of charge separation by heterojunction and spin polarization for enhanced photodegradation performance

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S-scheme 0.5Co-BiOCl/Co₃O₄: synergistic regulation of charge separation by heterojunction and spin polarization for enhanced photodegradation performance