Unsupported gold nanocones as sonocatalytic agents with enhanced catalytic properties

Su, Xiaoqian; Jonnalagadda, Umesh Sai; Bharatula, Lakshmi Deepika; Kwan, James J.

doi:10.1016/j.ultsonch.2021.105753

Cited by 8 publications

(9 citation statements)

References 45 publications

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“…A characterizing feature of solid cavitation agents is a rough surface on which gas bubbles can be stabilized. [14,16,20] We have previously demonstrated nanostructured TiO 2 particles as dualmodal photocatalytic nanostructures and cavitation agents (dubbed TONs) and herein, we extend the application of the structures further through surface deposition of AuPd nanoparticles to form AuPd/TONs. In addition to providing active sites for alcohol oxidation, [17] AuPd may also function as a cocatalyst to facilitate the efficient separation of photogenic charge carriers (due to sonoluminescence) to improve the efficiency of photocatalysis.…”

Section: Resultsmentioning

confidence: 89%

“…A characterizing feature of solid cavitation agents is a rough surface on which gas bubbles can be stabilized [14,16,20] . We have previously demonstrated nanostructured TiO 2 particles as dual‐modal photocatalytic nanostructures and cavitation agents (dubbed TONs) and herein, we extend the application of the structures further through surface deposition of AuPd nanoparticles to form AuPd/TONs.…”

Section: Resultsmentioning

confidence: 89%

“…Specifically, the TiO 2 in AuPd/TONs is activated by the broadband UV light [29] generated by sonoluminescence and produces charge carriers which helps to drive the catalytic reaction. Without a photoactive cavitation agent, e. g. in the case of AuPd/SiO 2 , cavitation‐mediated oxidation proceeds via other related phenomena, such has surface plasmon resonance, at a significantly slower rate [20] …”

Section: Resultsmentioning

confidence: 99%

“…Without a photoactive cavitation agent, e. g. in the case of AuPd/SiO 2 , cavitation-mediated oxidation pro- ChemCatChem ceeds via other related phenomena, such has surface plasmon resonance, at a significantly slower rate. [20]…”

Section: The Role Of Sonoluminescencementioning

confidence: 99%

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Nanostructured Sonophotocatalysts for spatially controlled inertial cavitation towards energy‐efficient sonochemistry

Jonnalagadda

Fan

et al. 2022

ChemCatChem

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Catalytic nanomaterials have been demonstrated to enhance sonochemical processing through interactions with inertial cavitation events. Typically, sonochemistry generates inertial cavitation events directly from the solvent, which results in spatially uncontrolled cavitation events with limited interaction with the catalytic active site. These high intensity acoustic fields also result in thermal effects and side reactions, which may further influence chemical yields and selectivity. Herein, we report on ultrasound-responsive structured AuPd/TiO 2 open nanoshells (TONs) to surface-stabilize gas bubbles for promot-ing cavitation events in the vicinity of catalytic active site. These exogenous bubbles trapped on catalytic active sites readily cavitate to produce free radicals for chemical reactions. Our findings indicate a positive trend between cavitation and benzaldehyde production in the presence of our AuPd/TONs. In contrast, nanostructures without gas-stabilization demonstrate reduced sonochemical conversion, suggesting the catalytic potential of nanostructuring photocatalytic materials to function as both cavitation agents and photo-oxidative catalysts, or photocatalytic nanostructure (PCN).

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Section: The Role Of Sonoluminescencementioning

confidence: 99%

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Nanostructured Sonophotocatalysts for spatially controlled inertial cavitation towards energy‐efficient sonochemistry

Jonnalagadda

Fan

et al. 2022

ChemCatChem

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“…The newly-reported synthetic UCAs are the gas-stabilizing nanoparticles (i.e., nanocups, nanocones, and mesoporous silica nanoparticles) [51] , [52] , [53] , [54] . These nanoparticles have structural cavities that are capable of trapping nanobubbles against gas dissolution ( Fig.…”

Section: Advanced Basics Of Ultrasound-driven Cavitationmentioning

confidence: 99%

Barrier-breaking effects of ultrasonic cavitation for drug delivery and biomarker release

Wei

Shen

Chen

et al. 2023

Ultrasonics Sonochemistry

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The drug delivery of hydrea anticancer by a nanocone-oxide: Computational assessments

Kadhim

Sheibanian

Ashoori

et al. 2022

Computational and Theoretical Chemistry

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Unsupported gold nanocones as sonocatalytic agents with enhanced catalytic properties

Cited by 8 publications

References 45 publications

Nanostructured Sonophotocatalysts for spatially controlled inertial cavitation towards energy‐efficient sonochemistry

Nanostructured Sonophotocatalysts for spatially controlled inertial cavitation towards energy‐efficient sonochemistry

Barrier-breaking effects of ultrasonic cavitation for drug delivery and biomarker release

The drug delivery of hydrea anticancer by a nanocone-oxide: Computational assessments

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