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July, 2023, Vol.32 No 4
For the purpose of sensing hydrogen gas, we synthesized a simple and reliable technique for doping Pd onto WO3 nanospheres. Porous WO3 nanostructure combined with the spillover effect of Pd allows for the detection of hydrogen at concentrations as low as 5 ppm at 100ºC while maintaining high selectivity over other gases. These impressive results can be traced back to uniform and robust Pd doping on the surface of WO3 nanospheres, making the material a desirable option for real-world applications.
Articles
< PreviousApplied Science and Convergence Technology 2023; 32(4): 82~103Next >
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Gas Sensor-Based Techniques for Detecting Ethylene (C2H4)
Tran Thi Dung , Ui Jin Lee , Yunkwang Oh , and Moonil Kim
aCritical Diseases Diagnostics Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
bKRIBB School, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
cDepartment of Biochemistry, Chungnam National University, Daejeon 34134, Republic of Korea ASCT 2023; 32(4): 82-88 Keywords : Gas sensor, Ethylene, Gaseous hormone, Biosensor -
Solid to Quasi-Liquid Phase Transition of Submonolayer Pentacene
Eunji Sim , Mihyun Yang , Ha Eun Cho , Somang Koo , Seong Chu Lim , and Kyuwook Ihm
aBeamline Research Division, Pohang Accelerator Laboratory, Pohang 37673, Republic of Korea
bDepartment of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
cDepartment of Smart Fabrication Technology, Sungkyunkwan University, Suwon 16419, Republic of Korea
dDepartment of Physics, University of Ulsan, Ulsan 44610, Republic of Korea ASCT 2023; 32(4): 89-92 Keywords : Surface melting, Phase transition, Organic crystal, Pentacene -
Optical Properties and Phase Transition in VO2 and Ti:ZnO/VO2 Thin Films
Chirag Saharan , Pawan S Rana , and Manish Kumar
aDepartment of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonepat 131039, India
bPohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea ASCT 2023; 32(4): 93-96 Keywords : Thermochromic, Smart window, Vanadium dioxide, X-ray diffraction -
Ruthenium Tris(bipyridine) Encapsulation in Zeolitic Imidazolate Framework-71 and its Photocatalytic Properties
Cao Thanh Tung Pham and Hyun Sung Kim
aInstitute of Chemical Technology, Vietnam Academy of Science and Technology, HoChi Minh City 70072, Vietnam
bDepartment of Chemistry, Pukyong National University, Busan 48513, Republic of Korea ASCT 2023; 32(4): 97-99 Keywords : Host-guest composites, Photocatalyst, Ruthenium tris(bipyridine), Zeolitic imidazolate frameworks, ZIF-71 -
In-situ Synthesis of Pd/WO3 Nanocomposites for Low-Temperature Hydrogen Gas Sensing
Mohammad Jamir Ahemad , Seok-Ki Hyung , Hee Yun Yang , Minji Im , Eunyoung Lee , Ji Hee Choi , Tae-Wook Kim , Seoung-Ki Lee , Byung Joon Moon , and Sukang Bae
aInstitute of Advanced Composite Materials, Korea Institute of Science and Technology, Wanju 55324, Republic of Korea
bDepartment of Flexible and Printable Electronics, LANL‐JBNU Engineering Institute, Jeonbuk National University, Jeonju 54896, Republic of Korea
cDepartment of JBNU-KIST Industry-Academia Convergence Research, Jeonbuk National University, Jeonju 54896, Republic of Korea
dSchool of Materials Science and Engineering, Pusan National University, Busan 46241, Republic of Korea ASCT 2023; 32(4): 100-103 Keywords : Pd, WO3, In-situ synthesis, Low operating temperature, Hydrogen gas sensor
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