In this study, dual functional conductive hydrogels containing polypyrrole (PPy) nanotubes (NTs) functionalized with beta-cyclodextrin (bCD) and titania (TiO₂) were produced and applied for both detection and removal of toxic substances. PPy, a representative conducting polymer was prepared in a form of nanotube (NT) and used for providing electrical conductivity. TiO₂ nanoparticles were incorporated into the inside of the PPy NTs during the formation of PPy NTs, acting as a photocatalyst. Subsequently, beta-cyclodextrin (bCD) molecules were introduced as sensing media on the surface of PPy NTs via a simple surface treatment. The resulting TiO₂@PPy-bCD hybrid NTs were embedded into agarose matrix to obtain a conductive hydrogel, simultaneously improving compatibility with substrates. The electrical properties of the hydrogel were investigated, showing electrical conductivity of approximately 10⁻³ S/cm and ohmic I-V relation on Au electrode. The sensing capability for a model analyte compound (methyl paraben, MPRB) down to 10 nM and photocatalytic degradation of methylene blue (MB) were demonstrated effectively. This study can provide important information for upcoming research activities for environmentally benign and toxic free versatile chemical sensors in diverse relevant fields.

在这项研究中，生产了含有被β-环糊精（bCD）和二氧化钛（TiO ₂）官能化的聚吡咯（PPy）纳米管（NTs）的双功能导电水凝胶，并将其用于检测和去除有毒物质。PPy，一种代表性的导电聚合物，以纳米管（NT）的形式制备，用于提供导电性。在形成PPy NTs的过程中，将TiO ₂纳米颗粒掺入PPy NTs的内部，作为光催化剂。随后，通过简单的表面处理，将β-环糊精（bCD）分子作为感测介质引入PPy NTs的表面。生成的TiO ₂将PPy-bCD杂合NT嵌入琼脂糖基质中以获得导电水凝胶，同时提高与底物的相容性。研究了水凝胶的电性能，显示出大约10 ^-3  S / cm的电导率和在Au电极上的欧姆IV关系。有效地证明了对低至10 nM的模型分析物化合物（对羟基苯甲酸甲酯，MPRB）的感测能力以及对亚甲基蓝（MB）的光催化降解。这项研究可以为即将开展的有关各种相关领域中对环境无害且无毒的多功能化学传感器的研究活动提供重要信息。