Regeneration of aged-AgNPs via density gradient ultracentrifugal nanoseparation

Sim, Jae Hoon; Umh, Ha Nee; Shin, Hyeon Ho; Sung, Hwa Kyung; Oh, Seung Yeon; Lee, Byung Cheun; Selvaraj, Rengaraj; Kim, Younghun

doi:10.1016/j.jiec.2013.11.059

Cited by 3 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 26 Whereas, NPs dispersed in the aqueous phase could easily be aggregated and/or agglomerated by changing the environmental conditions: pH, temperature, and salts. 27 Therefore, to effectively absorb light in a wide wavelength range of the NIR region, AuNS with a rough surface and shell structure was randomly decorated on the microrod vehicle, to provide a high density of hybridized LSPR feature.…”

Section: Resultsmentioning

confidence: 99%

“…When AuNPs are close-packed in random distribution, the plasmonic band of each AuNP will overlap and hybridize, leading to multiple overlapping plasmonic modes that give rise to broadband absorption . Whereas, NPs dispersed in the aqueous phase could easily be aggregated and/or agglomerated by changing the environmental conditions: pH, temperature, and salts . Therefore, to effectively absorb light in a wide wavelength range of the NIR region, AuNS with a rough surface and shell structure was randomly decorated on the microrod vehicle, to provide a high density of hybridized LSPR feature.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Photothermal Cellulose-Patch with Gold-Spiked Silica Microrods Based on Escherichia coli

Han

Hong

et al. 2018

ACS Omega

Self Cite

View full text Add to dashboard Cite

Plasmonic-mediated photothermal heating under near-infrared (NIR) irradiation is an emerging key technology in the field of photothermal therapy and chemical reactions. However, there are few reports of photothermal film (dry-type patch), and thus, in this work, we developed the plasmonic-induced photothermal cellulose-patch operating in the NIR region. Hollow and spikelike gold nanostructures, gold-spikes, as plasmonic nanoparticles were prepared and decorated on silica microrods, which were prepared based on a unicellular organism, Escherichia coli, as a framework. In addition, freestanding cellulose-patch was prepared by mixing filter-paper pulp and armored golden E. coli (AGE) microrods. The major absorbing peak of AGE solution was revealed to be 873 nm, and the surface temperature of patch was increased to 264 °C within a very short time (1 min). When NIR laser was irradiated on the patch dipped in the water, the formation of water vapor and air bubbles was observed. The heating efficiency of indirect heat transfer via conduction from patch-to-water was 35.0%, while that of direct heat transfer via radiation from patch in water was 86.1%. Therefore, the cellulose-patch containing AGE microrods has possible applicability to desalination and sterilization because of its fast heating rate and high light-to-heat conversion under the irradiation of low-powered IR laser.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%