Electrical Sensor Based on Hollow ZnO Spheres for Hydrazine Detection

ZnO Nanocrystal-Based Chloroform Detection: Density Functional Theory (DFT) Study

“…The geometric optimization of a pristine Zn 12 O 12 nanocage was performed. Zn 12 O 12 is composed of eight (ZnO) 3 and six (ZnO) 2 rings, forming a cluster in which all of the Zn and O vertices are equivalent [48], as shown in Figure 1. The examined structural properties of the Zn 12 O 12 nanocage agreed well with previous studies [37,45,49].…”

“…The rapid development of various important industries, such as automobiles, pharmaceuticals, textiles, food, and agriculture, has substantially contributed to environmental pollution [1]. The release of various toxic and harmful gases and chemicals from such industries has significantly disturbed the ecosystem, and poses a great threat not only to humans, but to all living beings [2,3]. Among the various toxic gases, chloroform, which is also known as tri-chloromethane or methyl-tri-chloride, is considered to be one of the most toxic gases, and evaporates quickly when exposed to air [4].…”

Growth of n-Ga doped ZnO nanowires interconnected with disks over p-Si substrate and their heterojunction diode application

“…Because of their significant use in electronics, sensors (gas, chemical and bio), optical devices, photocatalysis, energy devices (solar cells, supercapacitors, batteries, hydrogen energy, etc. ), bio related applications (antibacterial, cancer detection, cancer therapy), and so on, ZnO is widely studied [14][15][16][17][18]. Owing to numerous applications, various ZnO nanostructures such as nanorods, nanowires, nanofibers, nanodisks, nanoflowers, nanosheets, nanowhiskers, and so forth are synthesized by a number of techniques and reported in the literature [19][20][21][22][23].…”

Direct Growth of Flower-Shaped ZnO Nanostructures on FTO Substrate for Dye-Sensitized Solar Cells

“…It is realized that some extent of research on the improvement in performance of ZnO-based DSSC are needed to outperform the aggregates formation of Zn 2+ /dye complexes [19].ZnO is highly scrutinized n-type semiconducting oxide owing to its an unique wide band gap of 3.37 eV and considerable large exciton binding energy of~60 meV at ambient condition [20,21]. The unique properties of ZnO materials have attracted attention in the area of electrochemical and photoelectrochemical devices because they have special ability to grow a variety of different nanostructures [22][23][24][25][26][27][28][29]. Apart from thermal growth of ZnO, ZnO synthesis at low temperature solution processes has recently been popularized due to ease of processibility, high aspect growth ratio, low-cost, and high yield [30].…”

“…In past few years, researches are experimented to elevate the conversion efficiency of ZnO-based DSSCs by adopting different structural and morphological aspects like 1D, 2D, and 3D branched networks and mixed morphologies for preparing ZnO photoanodes [31][32][33]. Several works on the utilization of 1D and 2D ZnO-based photoanodes have already been reported, but the conversion efficiencies of DSSCs are not competent to TiO 2 based DSSCs [29][30][31][32][33].Herein, we report the low-temperature hydrothermal synthesis, characterization, and dye-sensitized solar cell (DSSC) application of ZnO nanoflowers. The ZnO nanoflowers were grown directly on the fluorine-doped tin oxide (FTO) substrate via simple hydrothermal process and directly used as working electrode for the dye absorption in DSSCs.…”