Solvothermal synthesis of ZnO-decorated α-Fe2O3 nanorods with highly enhanced gas-sensing performance toward n-butanol

2014 ◽  
Vol 2 (33) ◽  
pp. 13283-13292 ◽  
Author(s):  
Yusuf V. Kaneti ◽  
Quadir M. D. Zakaria ◽  
Zhengjie Zhang ◽  
Chuyang Chen ◽  
Jeffrey Yue ◽  
...  
Keyword(s):  
Solvothermal Synthesis ◽  
Gas Sensing ◽  
Solvothermal Method ◽  
Fast Response ◽  
Working Temperature ◽  
Enhanced Sensitivity ◽  
Response Recovery ◽  
Facile Solvothermal Method ◽  
Sensing Performance

A facile solvothermal method has been developed for the synthesis of α-Fe2O3/ZnO nanocomposites that show enhanced sensitivity, selectivity and fast response–recovery toward n-butanol at a working temperature of 225 °C.

Y-doped In2O3 hollow nanocubes for improved triethylamine-sensing performance

2021 ◽  
Vol 45 (15) ◽  
pp. 6773-6779
Author(s):  
Qi Zhao ◽  
Guoce Zhuang ◽  
Yongbing Zhao ◽  
Liangliang Yang ◽  
Jinshan Zhao
Keyword(s):  
Gas Sensing ◽  
Fast Response ◽  
High Response ◽  
Sensing Properties ◽  
Response Recovery ◽  
Gas Sensing Properties ◽  
Sensing Performance

Y-In2O3 hollow nanocubes show enhanced triethylamine gas sensing properties, with a high response and an ultra-fast response-recovery speed.

Solvothermal synthesis and visible light-driven photocatalytic degradation for tetracycline of Fe-doped SrTiO3

RSC Advances ◽  
2014 ◽  
Vol 4 (88) ◽  
pp. 47615-47624 ◽  
Author(s):  
Ping Li ◽  
Chunbo Liu ◽  
Guoling Wu ◽  
Yang Heng ◽  
Shuang Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Solvothermal Synthesis ◽  
Solvothermal Method ◽  
Light Irradiation ◽  
Photocatalytic Activities ◽  
Visible Light Driven ◽  
Facile Solvothermal Method

In this paper, Fe-doped SrTiO3 (FSTO) photocatalysts were successfully prepared via a facile solvothermal method, and their photocatalytic activities for degrading tetracycline (TC) under visible light irradiation were examined.

Liquid-Phase Co-Exfoliated Graphene/MoS2 Nanocomposite for Methanol Gas Sensing

2015 ◽  
Vol 15 (10) ◽  
pp. 8004-8009 ◽  
Author(s):  
Shao-Lin Zhang ◽  
Hongyan Yue ◽  
Xishuang Liang ◽  
Woo-Chul Yang
Keyword(s):  
Thin Film ◽  
Gas Sensing ◽  
Synergetic Effect ◽  
Film Sensor ◽  
Thin Film Sensor ◽  
Sensor Material ◽  
Enhanced Sensitivity ◽  
Distinct Structure ◽  
Nanocomposite Sensor ◽  
Sensing Performance

We developed an efficient method to co-exfoliate graphite and MoS2 to fabricate graphene/MoS2 nanocomposite. The size, morphology, and crystal structure of the graphene/MoS2 nanocomposite were carefully examined. The as-prepared graphene/MoS2 nanocomposite was fabricated into thin film sensor by a facile drop casting method and tested with methanol gas in various concentrations. The sensitivity, response time, and repeatability of the graphene/MoS2 nanocomposite sensor towards methanol gas were systematically investigated. A pure MoS2− based thin film sensor was also prepared and compared with the nanocomposite sensor to better understand the synergetic effect in the sensing performance. Our research demonstrated that compositing MoS2 with graphene could overcome the shortcoming of MoS2 as a sensor material and bring in a promising gas-sensing performance with a quicker response/recovery time and an enhanced sensitivity. Moreover, this composited material with a distinct structure and an excellent electronic property is expected to have potential application in various fields, such as optoelectronic.

Pd-Loaded In2O3 Hollow Spheres with Enhanced Formaldehyde Sensing at Low Temperature

NANO ◽  
2020 ◽  
pp. 2150006
Author(s):  
Xiaohua Liu ◽  
Hong Wang ◽  
Ruisong Yang ◽  
Di Liu ◽  
Jiawei Wan ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Hollow Spheres ◽  
Hollow Structure ◽  
Average Diameter ◽  
Fast Response ◽  
Test Methods ◽  
Step Method ◽  
Sensing Properties ◽  
Calcination Temperatures ◽  
Working Temperature

The porous Pd-loaded In2O3 hollow spheres were successfully prepared by simple one-step method with the template of carbon spheres. The effect of calcination temperatures on morphology, composition and gas sensing performance of the as-obtained products was discussed by a series of test methods. The sample calcined at 550∘C showed uniform porous hollow spheres with an average diameter of 100[Formula: see text]nm. Gas-sensing results exhibited that the Pd-In2O3 hollow spheres-based sensor possessed excellent sensing properties to formaldehyde, which include high response value (33), low working temperature (180∘C) and fast response and recovery time (12[Formula: see text]s and 22[Formula: see text]s). The enhanced HCHO-sensing properties of Pd-In2O3 composites were attributed to the special porous and hollow structure, abundant oxygen vacancies and the catalysis of palladium. Pd-loaded In2O3 hollow spheres had been proved to be an ideal material for detecting HCHO at a low working temperature.

scholarly journals Gas Sensors Based on Chemi-Resistive Hybrid Functional Nanomaterials

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Yingying Jian ◽  
Wenwen Hu ◽  
Zhenhuan Zhao ◽  
Pengfei Cheng ◽  
Hossam Haick ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Carrier Transport ◽  
Gas Sensing ◽  
Low Cost ◽  
Functional Materials ◽  
Fast Response ◽  
Hybrid Functional ◽  
Great Stability ◽  
Molecular Binding ◽  
Response Recovery

AbstractChemi-resistive sensors based on hybrid functional materials are promising candidates for gas sensing with high responsivity, good selectivity, fast response/recovery, great stability/repeatability, room-working temperature, low cost, and easy-to-fabricate, for versatile applications. This progress report reviews the advantages and advances of these sensing structures compared with the single constituent, according to five main sensing forms: manipulating/constructing heterojunctions, catalytic reaction, charge transfer, charge carrier transport, molecular binding/sieving, and their combinations. Promises and challenges of the advances of each form are presented and discussed. Critical thinking and ideas regarding the orientation of the development of hybrid material-based gas sensor in the future are discussed.

Solvothermal Synthesis of TiO2 Hollow Microsphere and Its Photocatalytic Properties

2011 ◽  
Vol 356-360 ◽  
pp. 345-348
Author(s):  
Jin Guo Wang ◽  
Jian Zhu ◽  
Xi Li ◽  
He Xing Li
Keyword(s):  
Photocatalytic Activity ◽  
Solvothermal Synthesis ◽  
Solvothermal Method ◽  
Uv Light ◽  
Hollow Structure ◽  
Hollow Microsphere ◽  
Hollow Microspheres ◽  
Photocatalytic Properties ◽  
Multiple Reflections ◽  
Facile Solvothermal Method

TiO2hollow microspheres were synthesized by a facile solvothermal method. The prepared samples were characterized by the XRD, SEM, TEM, BET and UV-vis. The results showed that the TiO2hollow microspheres offered an enhanced photocatalytic activity due to the multiple reflections of the UV light within the inner hollow structure.

Hierarchical Flower-Like Microspheres: An Application of Hydrogen Sulfide Gas Sensor for Tunnel Construction

2021 ◽  
Vol 16 (1) ◽  
pp. 1-5
Author(s):  
Chuansheng Wu ◽  
Yuyue Li ◽  
Lingling Qi ◽  
Lingjiang Zhang ◽  
Hao Xu
Keyword(s):  
Gas Sensor ◽  
Gas Sensing ◽  
Fast Response ◽  
Tunnel Construction ◽  
Hydrothermal Route ◽  
Sensing Properties ◽  
Response Recovery ◽  
Gas Sensing Properties ◽  
Gas Response ◽  
Scanning Electron

Hierarchical flower-like WO3 · H2O microspheres assembled by nanosheets were successfully prepared through a simple hydrothermal route. Field emission scanning electron microscopy results indicate that the flower-like WO3 · H2O microspheres are composed of numerous nanosheets, which are interconnected with each other in the sphere shape. In addition, the gas sensing properties of the hierarchical WO3 · H2O microspheres were investigated. It is found that the gas sensor based on the hierarchical WO3 · H2O architectures exhibits excellent gas sensing properties towards H2S gas, including high gas response and fast response/recovery speed.

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