2022
DOI: 10.1002/admi.202102107
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Microporous‐Ceria‐Wrapped Gold Nanoparticles for Conductometric and SERS Dual Monitoring of Hazardous Gases at Room Temperature

Abstract: metal NPs have relatively high surface energy, and thus easily agglomerate and oxidize. [10] This can lead to unexpected performance losses in practical applications. In addition, bare metal NPs are limited in complex functions, such as modulated carrier transport, enhanced molecular capture, and strong charge separation. In comparison, functional material-wrapped metal NPs have promising reductions in aggregation and can offer more complex functions. [11][12][13][14][15] Among these wrapped metal NPs, micropo… Show more

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Cited by 6 publications
(3 citation statements)
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“…Moreover, the target molecules were only limited to aldehydes. Recently, Bao, et al , used the oxides-wrapped Au nanoparticles’ film and achieved the SERS-based detection of mercaptan-VOCs but with a limit of parts per million (ppm) level. As for the reports on the SERS-based detection of B-VOCs, it is very limited, and both fast and sensitive SERS-based detection is still expected.…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, the target molecules were only limited to aldehydes. Recently, Bao, et al , used the oxides-wrapped Au nanoparticles’ film and achieved the SERS-based detection of mercaptan-VOCs but with a limit of parts per million (ppm) level. As for the reports on the SERS-based detection of B-VOCs, it is very limited, and both fast and sensitive SERS-based detection is still expected.…”
Section: Introductionmentioning
confidence: 99%
“…Rare-earth semiconductors can also be utilized to form shells on plasmonic cores, the most common of which is CeO 2 . Bao et al 188 proposed a method that is easily adaptable to several combinations of metal@mesoporous oxide architectures, by simple variation of the pre-formed metal core or shell precursors. The same protocol also allows a facile modification of the shell thickness from 4 to 30 nm, by varying the Ce 3+ added to the colloidal gold sol.…”
Section: Overview Of Challengesmentioning
confidence: 99%
“…The SnO 2 shell here should be thin enough (about several nanometers) for ensuring enough SERS activity because of the short-range nature of SERS. , The Au@SnO 2 NPs were prepared through a reported method with minor modifications . The gas sensor was fabricated by coating the preprepared Au@SnO 2 NPs as a sensitive film on a blank sensor substrate, , and the test system was constructed by integrating a self-made gas sensing module and a self-made inverted Raman microscope. , More details about NP preparation, sensor fabrication, and test system construction are presented in the Supporting Information.…”
mentioning
confidence: 99%