1D nanostructures of TiO₂ have been extensively researched in chemical sensing. The need for deployment of 3D nanostructures such as flower-like and urchin-like morphology for chemical sensing is very essential. This morphology provides distinctive attributes because of the properties afforded by the micrometre and nanometre building blocks within the crystal of the nanomaterial. 3D nanostructure nanorutile titania was fabricated using a facile hydrothermal method. The gas sensing performance showed that the hierarchical morphology, high surface area, high porosity and humidity played a vital role in the sensing of ethanol vapour at room temperature. The radially aligned nanorutile (RANR) TiO₂ sensor showed high sensitivity with responses of 86.75% and 38.27% towards ethanol and methanol vapours, respectively. The sensor displayed good sensitivity, reproducibility, rapid response, and recovery times towards alcohol vapours.

_{TiO 2}的一维纳米结构已在化学传感领域得到广泛研究。部署 3D 纳米结构（如花状和海胆状形态）用于化学传感的需求非常重要。由于纳米材料晶体内的微米和纳米结构单元所提供的特性，这种形态提供了独特的属性。使用简便的水热法制备了 3D 纳米结构纳米金红石二氧化钛。气敏性能表明，多级形貌、高比表面积、高孔隙率和湿度对室温下乙醇蒸汽的传感起着至关重要的作用。径向排列的纳米金红石 (RANR) TiO ₂传感器显示出高灵敏度，对乙醇和甲醇蒸气的响应分别为 86.75% 和 38.27%。该传感器对酒精蒸汽显示出良好的灵敏度、重现性、快速响应和恢复时间。