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<p>Layered double hydroxides (LDHs) have shown broad prospects as low-cost and easily obtainable alternative photocatalyst for antibiotic removal. In this study, the CuCo LDHs were synthesized through a simple hydrothermal method. The energy gap of LDHs were successfully adjusted by changing the ratio of Cu and Co, thereby improving the light absorption performance, prolonging the lifetime of photogenerated charge carriers, and ultimately enhancing the catalytic performance of the CuCo LDHs catalysts. The obtained CuCo LDHs<sub>1:0.3</sub> exhibits a photocatalytic degradation ability of up to 100% for diclofenac (DCF) within 60&#xa0;min under UV–visible irradiation. In addition, the degradation rate for chlorotetracycline hydrochloride (CTC) were also more than 80%. The liquid chromatography-mass spectrometry (LC–MS) and bean sprouts cultivation experiments show that the DCF and CTC were mineralized into the low toxic compounds. Furthermore, the different photocatalytic mechanism for DCF and CTC were put forward. The CuCo LDHs<sub>1:0.3</sub> exhibits great potential for catalytic degradation toward organic pollutants with different structures.</p>

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Enhanced photocatalytic degradation of diclofenac and chloramphenicol hydrochloride by CuCo-LDH: excellent performances and mechanisms

  • 期刊论文

  • 发表日期：

    2026年7月18日

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  • Yunjie Yang,
  • Yajun Mu,
  • Jiajun Sun,
  • Hui Li,
  • Qiong Wang

摘要

Layered double hydroxides (LDHs) have shown broad prospects as low-cost and easily obtainable alternative photocatalyst for antibiotic removal. In this study, the CuCo LDHs were synthesized through a simple hydrothermal method. The energy gap of LDHs were successfully adjusted by changing the ratio of Cu and Co, thereby improving the light absorption performance, prolonging the lifetime of photogenerated charge carriers, and ultimately enhancing the catalytic performance of the CuCo LDHs catalysts. The obtained CuCo LDHs1:0.3 exhibits a photocatalytic degradation ability of up to 100% for diclofenac (DCF) within 60 min under UV–visible irradiation. In addition, the degradation rate for chlorotetracycline hydrochloride (CTC) were also more than 80%. The liquid chromatography-mass spectrometry (LC–MS) and bean sprouts cultivation experiments show that the DCF and CTC were mineralized into the low toxic compounds. Furthermore, the different photocatalytic mechanism for DCF and CTC were put forward. The CuCo LDHs1:0.3 exhibits great potential for catalytic degradation toward organic pollutants with different structures.