TiO₂/Bis[3-(trimethoxysilyl)propyl]amine (BTMSPA) hybrid particles with a coral morphology were prepared using a facile method and used for the removal of methyl orange (MO) dye from wastewater. The structure of the TiO₂/BTMSPA particles and the adsorption mechanism for MO were analyzed. Meanwhile, the adsorption isotherms and kinetics of MO on the particles were also studied. During the preparation of the TiO₂/BTMSPA hybrid adsorbent, some of the BTMSPA linked the TiO₂ particles to form a skeleton, while the remaining BTMSPA grew in situ on the TiO₂ surface into nanopapillae, forming a micro/nano-porous coral-like structure. The secondary amine group in BTMSPA acted as an adsorbent via a single molecular layer chemisorption mechanism. In a neutral environment, the decolorization rate of MO was 83.3% after 1 min, eventually reaching 91.2 %. The maximum adsorption capacity was determined to be 90.3 and 369.3 mg/g under neutral and acidic conditions, respectively. Furthermore, the hybrid particles also showed excellent performance for the removal of other anionic dyes and such as methyl blue and amaranth red, with a 100 % decolorization rate. The adsorbent had good universality and excellent regeneration performance after an alkaline washing step.

使用简便的方法制备了具有珊瑚形态的TiO ₂ /双[3-(三甲氧基甲硅烷基)丙基]胺 (BTMSPA) 杂化颗粒，并将其用于去除废水中的甲基橙 (MO) 染料。分析了TiO ₂ /BTMSPA颗粒的结构和对MO的吸附机理。同时，还研究了MO在颗粒上的吸附等温线和动力学。在TiO ₂ /BTMSPA杂化吸附剂的制备过程中，部分BTMSPA与TiO ₂颗粒连接形成骨架，而剩余的BTMSPA在TiO _{2上原位生长}表面进入纳米乳头，形成微/纳米多孔珊瑚状结构。BTMSPA 中的仲胺基团通过单分子层化学吸附机制充当吸附剂。在中性环境下，1 min后MO的脱色率为83.3%，最终达到91.2%。在中性和酸性条件下，最大吸附容量分别为 90.3 和 369.3 mg/g。此外，杂化颗粒还表现出优异的去除其他阴离子染料的性能，如甲基蓝和苋菜红，脱色率为100%。该吸附剂具有良好的通用性，碱洗后再生性能优异。