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 Solid state gas sensors

Objective of this research:

Chemical species such as H2S, H2, NOx SOx are among the toxic gases and environmental pollutants released by petroleum, petrochemical industry and combustion processes. For instance hydrogen sulfide, a natural by-product of oil and gas drilling, has caused a number of disasters in the national oil exploration industry. Moreover, during the energy-intensive industrial production of petrochemicals, the ability to detect and measure concentrations of individual gaseous hydrocarbons, hydrogen, hydrogen sulfide and NOx is of vital importance. Field applications of sensor demands new and novel materials, which can overcome the existing challenges to achieve improved selective, sensitive and stable chemical sensors. The fabrication of nanostructured resistor based chemical sensors will allow the detection of hydrogen sulfide and sulphur dioxides, hydrogen, hydrocarbons and nitrogen oxides relevant to petroleum and petrochemical industry. Other CENT developed sensor applications might include volatile organics (VOCS) detection.

We intend to focus on the following major research areas.

  • To fabricate nanostructured materials and their composite for sensing applications.
  • To build up cutting-edge research facilities required to perform gas sensing experiments.
  • To subject prepared sensors to field testing for real conditions evaluation.
  • To contribute to the body of scientific literature in journals of international repute.
  • To educate and train students in the field of nanomaterials chemical sensors.


Group Members:

  • Dr. Ahsan
  • Dr. Zain Yamani
  • Dr. Qasem Drmosh
  • Dr. Nabeel Maalej
  • Mr. Ibrahim  (graduate student)

Research facilities:

      • Synthesis facilities, Gas sensing chamber, Agilent and Kithley Multimeters, Sputtering System, automated gas sensing System etc…


      • Toyama University Japan, Sultan Qaboos University Oman

Latest publications:

  1. SS Bhat, Ahsanulhaq  Qurashi, FA Khanday "ZnO nanostructures based biosensors for cancer and infectious disease applications: perspectives, prospects and promises" TrAC Trends in Analytical Chemistry 86, (2017) 1-13 .
  2. Ullah, H.,  Khan, I.,  Yamani, Z.H.,   Qurashi A., "Sonochemical-driven ultrafast facile synthesis of SnO2 nanoparticles: Growth mechanism structural electrical and hydrogen gas sensing properties" Ultrasonics Sonochemistry 34, (2017) 484-490.
  3. Rather, J.A.,   Al Harthi, A.J.,  Khudaish, A.A.,   Qurashi, A.,   Munam, A.,  P Kannan P.,  "An electrochemical sensor based on fullerene nanorods for the detection of paraben, an endocrine disruptor"  Analytical Methods 8 (2016) 5690-5700.
  4. Rather, J.A.,  Khudaish, E.A.,  Munam, A.,  Qurashi, A.,   Kannan P.,  "Electrochemically reduced fullerene–graphene oxide interface for swift detection of Parkinsons disease biomarkers" Sensors and Actuators B: Chemical 237, (2016), 672-684.  
  5. Faiz, M.,  Qurashi A., Tabet, N.,  "Rapid microwave assisted synthesis of Zn 1− x In x O heterostructured nanotetrapods and their hydrogen sensing properties" Vacuum 130, (2016) 159-164.
  6. Muhammad Mansha,  Ahsanulhaq Qurashi, Nisar Ullah, Fatai Olawale Bakare, Ibrahim Khan, Zain H. Yamani, "Synthesis of In2O3/graphene heterostructure and their hydrogen gas sensing properties" Ceramics International, 42 (2016), 11490–11495.