Laboratory of Gas sensors and monitors

14/11/2021 - 03:07 PM 199 views
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CÁC THÀNH TỰU CHÍNH

Department Head
PhD. Ho Truong Giang
 MISSION:
  • Synthesizing of gas-sensing materials and investigating their physical/chemical characteristics
  • Fabricating and investigating gas sensors, focused on their high sensitivity and selectivity to toxic/explosive gases
  • Researching on electrical techniques for designing/fabricating electrical boards of analytical equipment and instruments
  • Utilizing and developing gas analysis techniques for virtual applications
MAIN RESEARCH DIRECTION:
  • Synthesizing and investigating gas-sensing nano-structured materials such as metal oxides; conducting polymers; composites or organic/inorganic hybrids...
  • Fabricating and investigating gas sensing devices for detecting toxic and explosive gases, based on electrical conducting gas sensor, catalyst gas sensor, thermal conducting gas sensor, electrochemical gas sensor, optical gas sensor (infrared gas sensor)...
  • Designing and manufacturing electrical boards utilizing in alarm, analysis and control instruments and systems
  • Developing and utilizing gas-analytical technologies for early alarming, analyzing and monitoring the explosive and noxious gases in air atmosphere
  • Gas analysis in emission/exhausted gases for controlling and optimizing fuel combustion processes
  gianght@ims.vast.ac.vn   +84 977 324 657

ACHIEVMENTS

(a)
(b)
Fig. 1. Nanostructured materials Bi2S3 for photo-catalyst and room-temperature gas sensing (a);
gas analysis equipment for application in the cement industry (b).

  • Researching on the synthesis of nanomaterials for gas sensing and photo-catalyst. For example, recently, nanostructured materials (Bi2S3) with various morphologies were synthesized and investigated for high-efficiency optical-catalyst and room-temperature gas sensing.

  • Fabrication of some types of sensing devices such as resistive gas sensors, electrochemical gas sensors, and non-dispersive infrared sensors for detecting common gases (O2, CO, CO2, NO, NO2, HC, H2,…)

  • We have designed and fabricated types of equipment for monitor, analysis and process related to the gas parameter for applications in industry and agriculture. 

SELECTED PUBLICATIONS

  1. Ho Truong Giang, Ha Thai Duy, Pham Quang Ngan, Giang Hong Thai, Do Thi Anh Thu, Do Thi Thu, Nguyen Ngoc Toan, Hydrocarbon gas sensing of nano-crystalline perovskite oxides LnFeO3 (Ln = La, Nd and Sm), Sensors and Actuators B, 158 (2011) 246-251.

  2. Ho Truong Giang, Ha Thai Duy, Pham Quang Ngan, Giang Hong Thai, Do Thi Anh Thu, Do Thi Thu, Nguyen Ngoc Toan, High sensitivity and selectivity of mixed potential sensor based on Pt/YSZ/SmFeO3 to NO2 gas, Sensors and Actuators B, 183 (2013) 550-555.

  3. Dzung Tuan Nguyen, My Thanh Nguyen, Giang Truong Ho, Toan Ngoc Nguyen, S. Reisberg, B. Piro, M.C. Pham, Design of interpenetrated network MWCNT/poly(1,5-DAN) on interdigital electrode: Toward NO2 gas sensing, Talanta, 115 (2013) 713-717.

  4. Nguyen Duc Tho, Do Van Huong, Ho Truong Giang, Pham Quang Ngan, Giang Hong Thai, Do Thi Anh Thu, Do Thi Thu, Nguyen Thi Minh Tuoi, Nguyen Ngoc Toan, Pham Duc Thang, Hoang Nam Nhat, High temperature calcination for analyzing influence of 3d transition metals on gas sensing performance of mixed potential sensor Pt/YSZ/LaMO3 (M = Mn, Fe, Co, Ni), Electrochimica Acta, 190 (2016) 215-220.

  5. Nguyen Duc Tho, Do Van Huong, Pham Quang Ngan, Giang Hong Thai, Do Thi Anh Thu, Do Thi Thu, Nguyen Thi Minh Tuoi, Nguyen Ngoc Toan, Ho Truong Giang, Effect of sintering temperature of mixed potential sensor Pt/YSZ/LaFeO3 on gas sensing performance, Sensors and Actuators B, 224 (2016) 747-754.

  6. Do Thi Thu, Hoang Thi Hien, Do Thi Anh Thu, Pham Quang Ngan, Giang Hong Thai, Chu Van Tuan, Tran Trung, Ho Truong Giang, Schottky contacts of (Au, Pt)/nanotube-titanates for fast response to NO2 gas at room temperature, Sensors and Actuators B, 244 (2017) 941-948.

  7. Do Thi Anh Thu, Ho Truong Giang, Do Van Huong, Pham Quang Ngan, Giang Hong Thai, Do Thi Thua, Tran Dai Lam, Correlation between photoluminescence spectra with gas sensing and photocatalytic activities in hierarchical ZnO nanostructures, RSC Advances, 7 (2017) 9826-9832.

  8. Do Thi Anh Thu, Ho Truong Giang, Bui Thu Hoai, Pham Quang Ngan, Giang Hong Thai, Do Thi Thu, Nguyen Duc Van, Tran Dai Lam, Surface-plasmon-enhanced ultraviolet emission of Au-decorated ZnO structures for gas sensing and photocatalytic devices, Beilstein Journal of Nanotechnology, 9 (2018) 771-779.

  9. Do Thi Anh Thu, Vu Thai Ha, Ho Truong Giang, Pham Quang Ngan, Giang Hong Thai, Le Anh Thi, Man Minh Tan, Tran Dai Lam, Bi2S3 Nanowires: First-Principles Phonon Dynamics and Their Photocatalytic Environmental Remediation, The Journal of Physical Chemistry C, 125 (2021) 4086-4091.

  10. Hoang Thi Hien, Do Thi Anh Thu, Pham Quang Ngan, Giang Hong Thai, Do Thanh Trung, Tran Trung, Man Minh Tan, Ho Truong Giang, High NH3  sensing performance of NiO/PPy hybrid nanostructures, Sensors and Actuators B, 340 (2021) 129986.

FACILITIES

1. Gas analyzer
a) Flue gas and combustion analyzer (E9000, USA)
- Gas types (O2, CO, CO2, HC, NO, NO2, H2S, SO2)
- Electrochemical gas sensor and optical gas sensor (NDIR)
- Flue exhaust-gases (up to 1200oC)
- Calculating combustion efficiency
- Analyzing and predicting fuel combustion status
- Hand-held gas analysis
b) Laboratory gas analyzer
- Gas types (O2, CO, CO2, HC, H2, VOC, NO, NO2, H2S, SO2,…)
- Electrochemical gas sensor and optical gas sensor (NDIR)
 
2. Gas mixing and generating system
- Gas types (O2, CO, CO2, HC, H2, VOCs, NO, NO2, H2S, SO2, NH3,…)
- Gas concentration range from ppb, ppm to %vol.

3.  Lock-in Amplifier RS830

4.  Programmable current source (Keithley 6620)

5.  Electrical multimeter (Keithley 2700)

6. Electrochemical equipments 

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Scientific research, technology development, application and transfer of science and technology products and services; international cooperation and training in the field of materials science and technology and other related fields.
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