CuInS2/Red Phosphorus Nanosheet Interleaved Heterostructures with Improved Interfacial Charge Transfer for Photoelectrochemical Aptasensing
文献类型： 外文期刊
作者： Li, Yunpeng 1 ; Adili, Guliqire 1 ; Liang, Gang 2 ; Ma, Yuhua 1 ; Liu, Jianbo 3 ;
作者机构： 1.Xinjiang Normal Univ, Coll Chem & Chem Engn, Urumqi 830054, Peoples R China
2.BAAFS Beijing Acad Agr & Forestry Sci, Inst Qual Stand & Testing Technol, Beijing 100097, Peoples R China
3.Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Key Lab Bionanotechnol & Mol Engn Hunan Prov, Changsha 410082, Peoples R China
4.Xinjiang Normal Univ, Xinjiang Key Lab Energy Storage & Photoelectrocata, Urumqi 830054, Peoples R China
期刊名称：ANALYTICAL CHEMISTRY （ 影响因子：6.7； 五年影响因子：6.5 ）
ISSN： 0003-2700
年卷期： 2024 年 96 卷 29 期
页码：
收录情况： SCI
摘要：
Accelerating the migration of interfacial carriers in heterojunctions is crucial for achieving highly sensitive photoelectrochemical (PEC) sensing. In this study, we developed three-dimensional (3D)/two-dimensional (2D) CuInS2/red phosphorus nanosheet (CuInS2/RP NS) n-n heterojunction functional materials with enhanced interfacial charge transfer capabilities for PEC sensing. The 3D CuInS2 serves as a conductive layer, providing excellent electronic conductivity and superior electron absorption and transport properties. In contrast, the ultrathin RP NS acts as a transport layer that enhances carrier mobility. The 3D/2D heterojunction ensures a large interface contact surface, shortening the carrier transport distance. A well-aligned band position generates a substantial built-in electric field, providing a significant driving force for efficient carrier separation and migration, thereby improving response sensitivity. A PEC aptamer sensor was constructed based on the synthesized heterostructure for ciprofloxacin detection. The detection limit of the CuInS2/RP NS aptamer sensor for ciprofloxacin is 2.03 x 10(-15) mg
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