Abstract
Silicon carbide (SiC) nanostructures have attracted significant attention for device applications due to their unique structural, electronic and catalytic properties. Here, the efficiency of three dimensional SiC nano-cauliflowers (NCs) for hydrogen gas sensing application has been investigated. We have deposited a vertically aligned, ordered Pd decorated SiC NCs directly on a silver (Ag) coated porous anodic alumina (AAO) substrate by DC magnetron cosputtering and then it used as a gas sensor without additional processing. The sensor shows remarkably high and selective responses to hydrogen gas with low detection range 2–500 ppm at relatively high temperature range (30–500 °C). Our results demonstrate the potential application of Pd decorated SiC NCs for fabricating highly sensitive and selective hydrogen gas sensors.
| Original language | English |
|---|---|
| Journal | Sensors and Actuators B: Chemical |
| Volume | 242 |
| Pages (from-to) | 694-699 |
| ISSN | 0925-4005 |
| DOIs | |
| Publication status | Published - 1. Apr 2017 |
| Externally published | Yes |
Funding
The author receive the financial support from the Ministry of Human Resource, India (Grant Code: MHR02-23-200-429). Amit Sanger has done his M.Tech in Nanotechnology from IIT Roorkee, India. Currently, he is a research scholar in Institute Instrumentation Center, Indian Institute of Technology Roorkee, India. His research area is focused on the development of nanostructured thin films of functional materials for hydrogen storage, sensors, hydrophobic coatings and energy storage applications. Pawan Kumar Jain is scientist F and Team Leader in Center for Carbon Materials, ARCI Hyderabad. He received his Ph.D. from National Physical Laboratory, New Delhi in 1994. His research area is focused on synthesis, characterization and applications of nanostructured carbon materials, conducting polymers, structural nanocomposites (polymer & metal matrix), nanofluids, Field Emission properties of CNTs, exfoliated graphite & its products, and carbon fiber reinforced composites. Yogendra Kumar Mishra is Professor and Group Leader in Functional Nanomaterials Group, Institute for Materials Science, University of Kiel, Germany. He received his Ph.D. from Jawaharlal Nehru University, New Delhi. His research area is focused on the growth of 3D extremely porous semiconducting interconnected flexible networks from interpenetrating nanostructures and their various applications. Ramesh Chandra is Professor in Institute Instrumentation Centre, & Center for excellence in Nanotechnology of Indian Institute of Technology Roorkee, India. He received his Ph.D. in Experimental Condensed Matter Physics from Indian Institute of Technology Delhi in 1993. He has worked as a visiting scientist at Tata Institute of Fundamental Research Mumbai, India (1997-99), and University of Cambridge, UK (2003-04). He has completed several research projects sponsored by various agencies of Govt. of India such as DST, CSIR, DRDO, DAE, CPRI and several are under process. He has supervised 16 Ph.D students in diverse areas of Nanoscience and nanotechnology. His current research is focused on the development of nanostructured thin films by PVD for hydrogen storage, gas sensors, solar cell and energy storage applications.
Keywords
- Hydrogen sensor
- Porous alumina
- SiC nanocauliflowers
- Sputtering
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