Fabrication of transition-metal (Zn, Mn, Cu)-based MOFs as efficient sensor materials for detection of H2 gas by clad modified fiber optic gas sensor technique

Nagoor Meeran M.; Saravanan S.P.; Shkir M.Karthik Kannan S.

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Fabrication of transition-metal (Zn, Mn, Cu)-based MOFs as efficient sensor materials for detection of H2 gas by clad modified fiber optic gas sensor technique

机译：Fabrication of transition-metal (Zn, Mn, Cu)-based MOFs as efficient sensor materials for detection of H2 gas by clad modified fiber optic gas sensor technique

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? 2021 Elsevier Inc.Recent research demonstrates that promising gas sensing materials are called metal-organic frameworks (MOFs) and their products due to their tunable form, high surface area, highly porous structure, and physisorption towards gases with relatively low temperature. In this report, recent developments in transition-metal (Zn, Mn, Cu)-based MOFs and their derivatives were synthesized as sensing materials. The sensors samples were analyzed by XRD, SEM, TEM, BET and XPS to know their textural, structural and electronic state. XRD results suggest that Zn-MOF showed hexagonal crystalline structure, while Mn-MOF and Cu-MOF showed monoclinic crystalline structure. The SEM images of Zn-MOF, Mn-MOF, and Cu-MOF samples and the relative morphologies are nanotubes, nanosheets, and nanoparticles, respectively. Further, the TEM image of Zn-MOF clearly shows that nanotubes with length around 200–300 nm and diameter of 10–20 nm. Fiber optic clad modified sensors were fabricated and tested gas sensing properties towards H2 gas with various concentrations (0–1000 ppm). Among the three sensing materials, Zn doped MOFs sensor showed outstanding selectivity with high sensitivity (115 counts/kpa) towards H2 gas. Moreover, it has shown high response (20 s) and recovery time (27 s), and long-term stability. The designed sensors may be required to apply to the production of an outstanding sensor for H2 for commercial uses.

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《Optical fiber technology》 |2021年第9期|102614.1-102614.7|共7页
作者
Nagoor Meeran M.; Saravanan S.P.; Shkir M.Karthik Kannan S.;
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Department of Chemistry Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology (Deemed University);

Department of Chemistry Karuppannan Mariappan College Chettiyarpalayam;

Advanced Functional Materials and Optoelectronics Laboratory (AFMOL) Department of Physics Faculty of Science King Khalid UniversityDepartment of Electronics CMS College of Science and Commerce Tamil Nadu;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
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Chemical sensor; Fiber optic sensor; High surface area; Hydrogen gas; Metal-organic framework;

Fabrication of transition-metal (Zn, Mn, Cu)-based MOFs as efficient sensor materials for detection of H2 gas by clad modified fiber optic gas sensor technique

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