Akhtar M Shaheer, Umar Ahmad, Sood Swati, Jung InSung, Hegazy H H, Algarni H
New and Renewable Energy Material Development Center (NewREC), Chonbuk National University, Chonbuk 54896, Korea.
Department of Chemistry, Faculty of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia.
Materials (Basel). 2019 Feb 14;12(4):566. doi: 10.3390/ma12040566.
This paper reports the rapid synthesis, characterization, and photovoltaic and sensing applications of TiO₂ nanoflowers prepared by a facile low-temperature solution process. The morphological characterizations clearly reveal the high-density growth of a three-dimensional flower-shaped structure composed of small petal-like rods. The detailed properties confirmed that the synthesized nanoflowers exhibited high crystallinity with anatase phase and possessed an energy bandgap of 3.2 eV. The synthesized TiO₂ nanoflowers were utilized as photo-anode and electron-mediating materials to fabricate dye-sensitized solar cell (DSSC) and liquid nitroaniline sensor applications. The fabricated DSSC demonstrated a moderate conversion efficiency of ~3.64% with a maximum incident photon to current efficiency (IPCE) of ~41% at 540 nm. The fabricated liquid nitroaniline sensor demonstrated a good sensitivity of ~268.9 μA mM cm with a low detection limit of 1.05 mM in a short response time of 10 s.
本文报道了通过简便的低温溶液法制备的TiO₂纳米花的快速合成、表征以及光伏和传感应用。形态表征清楚地揭示了由小花瓣状棒组成的三维花状结构的高密度生长。详细性质证实，合成的纳米花具有锐钛矿相的高结晶度，且能带隙为3.2 eV。合成的TiO₂纳米花被用作光阳极和电子介导材料，用于制造染料敏化太阳能电池（DSSC）和液态硝基苯胺传感器。所制备的DSSC表现出约3.64%的中等转换效率，在540 nm处的最大入射光子到电流效率（IPCE）约为41%。所制备的液态硝基苯胺传感器表现出约268.9 μA mM cm的良好灵敏度，在10 s的短响应时间内检测限低至1.05 mM。
