High response and selectivity toward hydrogen gas detection by In2O3 doped Pd@ZnO core-shell nanoparticles

Nguyen, Thuy Ngoc; Dao, Dung Van; Lee, In Hwan; Yu, Yeon–Tae; Oh, Sang Yeob

doi:10.1016/j.jallcom.2020.157280

Cited by 30 publications

(6 citation statements)

References 56 publications

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“…Finally, we have compared the gas-sensing performances of different types of gas sensors described above with research papers published by other research groups from Korea [ 184 , 185 , 186 , 187 , 188 , 189 , 190 , 191 , 192 , 193 , 194 , 195 , 196 , 197 , 198 , 199 , 200 , 201 , 202 , 203 , 204 , 205 , 206 , 207 , 208 , 209 , 210 , 211 , 212 , 213 , 214 , 215 , 216 , 217 , 218 , 219 , 220 , 221 , 222 ] in Table 3 .…”

Section: Other Resistive-based Gas Sensors (Glass/silicon/mof-based Gas Sensors)mentioning

confidence: 99%

State-of-the-Art Research on Chemiresistive Gas Sensors in Korea: Emphasis on the Achievements of the Research Labs of Professors Hyoun Woo Kim and Sang Sub Kim

Navale

Mirzaei

Majhi

et al. 2021

Sensors

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This review presents the results of cutting-edge research on chemiresistive gas sensors in Korea with a focus on the research activities of the laboratories of Professors Sang Sub Kim and Hyoun Woo Kim. The advances in the synthesis techniques and various strategies to enhance the gas-sensing performances of metal-oxide-, sulfide-, and polymer-based nanomaterials are described. In particular, the gas-sensing characteristics of different types of sensors reported in recent years, including core–shell, self-heated, irradiated, flexible, Si-based, glass, and metal–organic framework sensors, have been reviewed. The most crucial achievements include the optimization of shell thickness in core–shell gas sensors, decrease in applied voltage in self-heated gas sensors to less than 5 V, optimization of irradiation dose to achieve the highest response to gases, and the design of selective and highly flexible gas sensors-based WS2 nanosheets. The underlying sensing mechanisms are discussed in detail. In summary, this review provides an overview of the chemiresistive gas-sensing research activities led by the corresponding authors of this manuscript.

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Section: Other Resistive-based Gas Sensors (Glass/silicon/mof-based Gas Sensors)mentioning

confidence: 99%

State-of-the-Art Research on Chemiresistive Gas Sensors in Korea: Emphasis on the Achievements of the Research Labs of Professors Hyoun Woo Kim and Sang Sub Kim

Navale

Mirzaei

Majhi

et al. 2021

Sensors

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“…9 Unfortunately, ZnO-based H 2 sensors still suffer from high operating temperatures (200-400 °C) and low responses. 10 To achieve MOS-based sensors with a low operating temperature, several strategies including novel-morphology design, 11,12 defect engineering, 13,14 elemental doping, 15,16 and heterogeneous incorporation have been shown to work. 17,18 In particular, oxygen vacancy as an intrinsic defect could effectively tune the electronic and physicochemical properties of MOSs, which not only can regulate the adsorption behaviors, but also regulate the band structures, and consequently improve their gas sensing performances.…”

Section: Introductionmentioning

confidence: 99%

High-response H₂ sensing performances of ZnO nanosheets modulated by oxygen vacancies

Zhou

Yan

Lü

et al. 2023

Inorg. Chem. Front.

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“…Semiconductor-type hydrogen sensors mainly combine different semiconductor gas-sensitive materials to produce a heterotype heterojunction or a homotype heterojunction, so the choice of gas-sensitive materials has become an important aspect. The commonly used gas-sensitive materials include CuO, ZnO, − WO 3 , − SnO 2 , − etc. A combination of these gas-sensitive materials can form different types of semiconductor-type hydrogen sensors.…”

Section: Introductionmentioning

confidence: 99%

Heterojunction-Type Hydrogen Sensor Based on Silicon Nanoconvexity Induced by Femtosecond Laser

Wu,

Liu,

Yang

et al. 2023

ACS Appl. Nano Mater.

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Simple CuO-based hydrogen sensors at room temperature usually need to be used with precious metals. In this work, a p-CuO/n-Si hydrogen sensor with a nanoconvexity structure is conceived as an effective room-temperature hydrogen sensor without the precious metal decoration. The convexity-like nanostructure was induced on the n-Si substrate surface using the femtosecond (fs) laser direct writing technique. After hydrofluoric acid (HF) treatment, a layer of a p-CuO nanofilm was sputtered to fabricate a pn-junction hydrogen sensor (CuO/fs-Si). The sensor can work at room temperature when hydrogen concentration ranges from 100 to 30,000 ppm. At a hydrogen concentration of 10,000 ppm, the response time constant is 216 s. As a comparison, it is found that a pn-junction-type CuO/Si sensor without fs laser processing (CuO/Si) cannot detect hydrogen with a concentration of less than 10,000 ppm. The nanostructured Si surface improves the sensitivity of the sensor and reduces the detection limit. Operating at room temperature reduces the energy consumption of the sensor and improves applicability. A simple p-CuO/n-Si bilayer structure provides an alternative idea to develop miniaturized, low-power, compatible, and integrated hydrogen sensors.

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High response and selectivity toward hydrogen gas detection by In2O3 doped Pd@ZnO core-shell nanoparticles

Cited by 30 publications

References 56 publications

State-of-the-Art Research on Chemiresistive Gas Sensors in Korea: Emphasis on the Achievements of the Research Labs of Professors Hyoun Woo Kim and Sang Sub Kim

State-of-the-Art Research on Chemiresistive Gas Sensors in Korea: Emphasis on the Achievements of the Research Labs of Professors Hyoun Woo Kim and Sang Sub Kim

High-response H₂ sensing performances of ZnO nanosheets modulated by oxygen vacancies

Heterojunction-Type Hydrogen Sensor Based on Silicon Nanoconvexity Induced by Femtosecond Laser

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High response and selectivity toward hydrogen gas detection by In2O3 doped Pd@ZnO core-shell nanoparticles

Cited by 30 publications

References 56 publications

State-of-the-Art Research on Chemiresistive Gas Sensors in Korea: Emphasis on the Achievements of the Research Labs of Professors Hyoun Woo Kim and Sang Sub Kim

State-of-the-Art Research on Chemiresistive Gas Sensors in Korea: Emphasis on the Achievements of the Research Labs of Professors Hyoun Woo Kim and Sang Sub Kim

High-response H2 sensing performances of ZnO nanosheets modulated by oxygen vacancies

Heterojunction-Type Hydrogen Sensor Based on Silicon Nanoconvexity Induced by Femtosecond Laser

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High-response H₂ sensing performances of ZnO nanosheets modulated by oxygen vacancies