TY - JOUR
T1 - Convenient detection of H2S based on the photothermal effect of Au@Ag nanocubes using a handheld thermometer as readout
AU - Tao, Yingzhou
AU - Lin, Yisheng
AU - Luo, Fang
AU - Fu, Caili
AU - Lin, Cuiying
AU - He, Yu
AU - Cai, Zongwei
AU - Qiu, Bin
AU - Lin, Zhenyu
N1 - This project was financially supported by National Science Foundation of China ( 91843301 , 21904020 , 21775026 ), the Sciences Foundation of Fujian Province ( 2018J05018 , 2018J01685 , 2018J01682 ), “Thirteenth Five-Year Plan” Marine Economy Innovation and Development Demonstration Project (Grant No. FZHJ19 ), China Postdoctoral Science Foundation Funded Project ( 2020M671933 ). This project was financially supported by the Open Project Program of Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University (BTBU), Beijing 100048, China (Grant no.: SPFW2019YB04 ).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/3/8
Y1 - 2021/3/8
N2 - Hydrogen sulfide (H2S), as a hazardous gas, is often found around dump areas. Long term exposure can cause harm to health, it is highly necessary to develop some simple and sensitive methods for on-site H2S detection. Herein, a convenient photothermal assay has been designed for the quantitation of H2S using a handheld thermometer as readout. Au@Ag nanocubes (Au@Ag NCs), a core-shell nanocomposite with strong light absorption at ∼450 nm, was chosen as a novel photothermal agent in this study. Under the laser irradiation at 450 nm, the Au@Ag NCs show a strong photothermal effect, and a significant temperature enhancement can be measured by the thermometer easily. The presence of H2S can lead to the deposition of sulfur onto Au@Ag NCs, altering the localized surface plasmon resonance absorption, size, surface composition, and morphology of Au@Ag NCs and hence leading to the reduction of photothermal effect. The change of the temperature has a linear relationship with the H2S concentration in the range of 0.5–80.0 μM with a detection limit of 0.35 μM. By combining with simple sample purification procedures, the developed method has been applied to detect H2S in garbage odor gas with satisfactory results.
AB - Hydrogen sulfide (H2S), as a hazardous gas, is often found around dump areas. Long term exposure can cause harm to health, it is highly necessary to develop some simple and sensitive methods for on-site H2S detection. Herein, a convenient photothermal assay has been designed for the quantitation of H2S using a handheld thermometer as readout. Au@Ag nanocubes (Au@Ag NCs), a core-shell nanocomposite with strong light absorption at ∼450 nm, was chosen as a novel photothermal agent in this study. Under the laser irradiation at 450 nm, the Au@Ag NCs show a strong photothermal effect, and a significant temperature enhancement can be measured by the thermometer easily. The presence of H2S can lead to the deposition of sulfur onto Au@Ag NCs, altering the localized surface plasmon resonance absorption, size, surface composition, and morphology of Au@Ag NCs and hence leading to the reduction of photothermal effect. The change of the temperature has a linear relationship with the H2S concentration in the range of 0.5–80.0 μM with a detection limit of 0.35 μM. By combining with simple sample purification procedures, the developed method has been applied to detect H2S in garbage odor gas with satisfactory results.
KW - Au@Ag nanocubes
KW - Hydrogen sulfide
KW - Photothermal effect
KW - Temperature
KW - Thermometer
UR - http://www.scopus.com/inward/record.url?scp=85099398765&partnerID=8YFLogxK
U2 - 10.1016/j.aca.2021.338211
DO - 10.1016/j.aca.2021.338211
M3 - Journal article
C2 - 33551050
AN - SCOPUS:85099398765
SN - 0003-2670
VL - 1149
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
M1 - 338211
ER -
