Atomic layer deposited Pt nanoparticles on functionalized MoS2 as highly sensitive H2 sensor

Sungje Lee; Yunsung Kang; Jaehyeong Lee; Jingyung Kim; Jeong Woo Shin; Sangjun Sim; Dohyun Go; Eunhwan Jo; Seunghyeon Kye; Jongbaeg Kim; Jihwan An

doi:10.1016/j.apsusc.2021.151256

Atomic layer deposited Pt nanoparticles on functionalized MoS₂ as highly sensitive H₂ sensor

Sungje Lee, Yunsung Kang, Jaehyeong Lee, Jingyung Kim, Jeong Woo Shin, Sangjun Sim, Dohyun Go, Eunhwan Jo, Seunghyeon Kye, Jongbaeg Kim, Jihwan An

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

Hydrogen gas (H₂) has garnered significant attention as an alternative clean energy source, and its sensitive detection is essential to prevent explosions due to leakage in storage systems. Molybdenum disulfide (MoS₂), which exhibits a large surface area-to-volume ratio from atomically thin two-dimensional (2D) structure, has attracted attention as a suitable H₂ sensing material. However, pristine MoS₂ exhibits low sensitivity to nonpolar H₂. This paper demonstrates a decoration method for platinum (Pt) catalysts on 2D MoS₂ using atomic layer deposition (ALD) and its application to fabricate highly sensitive H₂ sensors. Additionally, to induce homogeneous distribution of Pt nanoparticles on chemically inert MoS₂ surfaces, oxygen plasma pretreatment is employed as the MoS₂ surface functionalization method. Consequently, highly sensitive detection of H₂ with the sensitivity over 400 and the lower detection limit set to 2.5 ppm, is achieved using ALD Pt-decorated MoS₂, and a sensing mechanism is proposed.

Original language	English
Article number	151256
Journal	Applied Surface Science
Volume	571
DOIs	https://doi.org/10.1016/j.apsusc.2021.151256
State	Published - 1 Jan 2022

Keywords

Atomic layer deposition
Hydrogen sensor
Molybdenum disulfide
Plasma treatment
Platinum catalyst

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10.1016/j.apsusc.2021.151256

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title = "Atomic layer deposited Pt nanoparticles on functionalized MoS2 as highly sensitive H2 sensor",

abstract = "Hydrogen gas (H2) has garnered significant attention as an alternative clean energy source, and its sensitive detection is essential to prevent explosions due to leakage in storage systems. Molybdenum disulfide (MoS2), which exhibits a large surface area-to-volume ratio from atomically thin two-dimensional (2D) structure, has attracted attention as a suitable H2 sensing material. However, pristine MoS2 exhibits low sensitivity to nonpolar H2. This paper demonstrates a decoration method for platinum (Pt) catalysts on 2D MoS2 using atomic layer deposition (ALD) and its application to fabricate highly sensitive H2 sensors. Additionally, to induce homogeneous distribution of Pt nanoparticles on chemically inert MoS2 surfaces, oxygen plasma pretreatment is employed as the MoS2 surface functionalization method. Consequently, highly sensitive detection of H2 with the sensitivity over 400 and the lower detection limit set to 2.5 ppm, is achieved using ALD Pt-decorated MoS2, and a sensing mechanism is proposed.",

keywords = "Atomic layer deposition, Hydrogen sensor, Molybdenum disulfide, Plasma treatment, Platinum catalyst",

author = "Sungje Lee and Yunsung Kang and Jaehyeong Lee and Jingyung Kim and Shin, {Jeong Woo} and Sangjun Sim and Dohyun Go and Eunhwan Jo and Seunghyeon Kye and Jongbaeg Kim and Jihwan An",

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year = "2022",

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doi = "10.1016/j.apsusc.2021.151256",

language = "English",

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T1 - Atomic layer deposited Pt nanoparticles on functionalized MoS2 as highly sensitive H2 sensor

AU - Lee, Sungje

AU - Kang, Yunsung

AU - Lee, Jaehyeong

AU - Kim, Jingyung

AU - Shin, Jeong Woo

AU - Sim, Sangjun

AU - Go, Dohyun

AU - Jo, Eunhwan

AU - Kye, Seunghyeon

AU - Kim, Jongbaeg

AU - An, Jihwan

PY - 2022/1/1

Y1 - 2022/1/1

N2 - Hydrogen gas (H2) has garnered significant attention as an alternative clean energy source, and its sensitive detection is essential to prevent explosions due to leakage in storage systems. Molybdenum disulfide (MoS2), which exhibits a large surface area-to-volume ratio from atomically thin two-dimensional (2D) structure, has attracted attention as a suitable H2 sensing material. However, pristine MoS2 exhibits low sensitivity to nonpolar H2. This paper demonstrates a decoration method for platinum (Pt) catalysts on 2D MoS2 using atomic layer deposition (ALD) and its application to fabricate highly sensitive H2 sensors. Additionally, to induce homogeneous distribution of Pt nanoparticles on chemically inert MoS2 surfaces, oxygen plasma pretreatment is employed as the MoS2 surface functionalization method. Consequently, highly sensitive detection of H2 with the sensitivity over 400 and the lower detection limit set to 2.5 ppm, is achieved using ALD Pt-decorated MoS2, and a sensing mechanism is proposed.

AB - Hydrogen gas (H2) has garnered significant attention as an alternative clean energy source, and its sensitive detection is essential to prevent explosions due to leakage in storage systems. Molybdenum disulfide (MoS2), which exhibits a large surface area-to-volume ratio from atomically thin two-dimensional (2D) structure, has attracted attention as a suitable H2 sensing material. However, pristine MoS2 exhibits low sensitivity to nonpolar H2. This paper demonstrates a decoration method for platinum (Pt) catalysts on 2D MoS2 using atomic layer deposition (ALD) and its application to fabricate highly sensitive H2 sensors. Additionally, to induce homogeneous distribution of Pt nanoparticles on chemically inert MoS2 surfaces, oxygen plasma pretreatment is employed as the MoS2 surface functionalization method. Consequently, highly sensitive detection of H2 with the sensitivity over 400 and the lower detection limit set to 2.5 ppm, is achieved using ALD Pt-decorated MoS2, and a sensing mechanism is proposed.

KW - Atomic layer deposition

KW - Hydrogen sensor

KW - Molybdenum disulfide

KW - Plasma treatment

KW - Platinum catalyst

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U2 - 10.1016/j.apsusc.2021.151256

DO - 10.1016/j.apsusc.2021.151256

M3 - Article

AN - SCOPUS:85115325939

SN - 0169-4332

VL - 571

JO - Applied Surface Science

JF - Applied Surface Science

M1 - 151256

ER -

Atomic layer deposited Pt nanoparticles on functionalized MoS₂ as highly sensitive H₂ sensor

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Keywords

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