Smart multifunctional direct Z-scheme In2S3@PCN-224 heterojunction for simultaneous detection and photodegradation towards antibiotic pollutants

Multifunctional heterojunctions, based on function-and structure-oriented material design and accurate syn-thesis, have emerged as an important platform in materials chemistry with great application prospects for solving practically complex science and engineering problems. Herein, a versatile Z-scheme In2S3@PCN-224 platform, based on Zr-metal-organic framework (PCN-224) and In2S3 nanosheets, was constructed by solvothermal and hydrothermal methods. Benefited from the high efficiency in the photoinduced electron-hole separation of Z-scheme heterojunctions, high specific surface area of PCN-224 core, and good visible-light absorption of hy-drophilic In2S3 shell, In2S3@PCN-224 exhibited excellent performance in visible-light photocatalytic degradation towards tetracycline hydrochloride (TC). Furthermore, In2S3@PCN-224 could be also used in fluorescence detection for TC with good analytical performance in terms of a large Stokes shift, fast response, and a low detection limit (55 nM). This work provides the inspiration for designing multifunctional heterojunctions, which will extend the boundary of integration of diagnosis and treatment in environmental management and control.

Automated summary

Multifunctional heterojunctions, based on function-and structure-oriented material design and accurate synthesis, have emerged as an important platform in materials chemistry with great application prospects for solving practically complex science and engineering problems.