Effect of thermal post-treatment on surface plasmon resonance characteristics of gold nanoparticles formed in glass by UV laser irradiation

Srabionyan, Vasiliy V.; Heinz, Maximilian; Kaptelinin, Sviatoslav Yu; Avakyan, L. A.; Сухарина, Г. Б.; Skidanenko, Anna V.; Pryadchenko, VasiliyV.; Абдулвахидов, К. Г.; Mikheykin, AlexeyS.; Durymanov, V. A.; Meinertz, J.; Ihlemann, J.; Dubiel, M.; Бугаев, Л. А.

doi:10.1016/j.jallcom.2019.06.263

Cited by 12 publications

(5 citation statements)

References 36 publications

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“…19,26 Besides, three sharp diffraction peaks along the (111), (200), and (220) planes at 38.18, 44.4, and 64.58 correspond to gold (JCPDS 04-0784). 27,28 This result clearly reveals the efficient piezo-photocatalytic reduction of DR-MoS 2 -4 NFs to Au(I) and the formation of gold.…”

Section: E 2gmentioning

confidence: 70%

“…XRD is employed to further investigate the crystal structure of DR-MoS 2 -4 NFs after gold reduction, and the result is shown in Figure b. Three diffraction peaks are detected at 13.87, 33.14, and 58.59°, which can be assigned to 2H-MoS 2 (JCPDS 73-1508). , Besides, three sharp diffraction peaks along the (111), (200), and (220) planes at 38.18, 44.4, and 64.58 correspond to gold (JCPDS 04-0784). , This result clearly reveals the efficient piezo-photocatalytic reduction of DR-MoS 2 -4 NFs to Au(I) and the formation of gold.…”

Section: Resultsmentioning

confidence: 99%

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Piezo-Photocatalytic Reduction of Au(I) by Defect-Rich MoS₂ Nanoflowers for Efficient Gold Recovery from a Thiosulfate Solution

Chen

Liang

et al. 2020

ACS Sustainable Chem. Eng.

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To achieve a more efficient gold recovery from a thiosulfate solution, piezo-photocatalytic reduction of Au(I) with defect-rich MoS 2 nanoflowers (DR-MoS 2 NFs) as a catalyst was proposed in this work. Superior piezoelectric response of DR-MoS 2 is detected by a piezoresponse force microscopy (PFM) measurement, revealing the excellent spontaneous polarization of DR-MoS 2 under an external force. Ultrafast Au(I) reduction is realized by DR-MoS 2 NFs with the aid of ultrasonic treatment under indoor light, which is attributed to the decline of the Schottky barrier in the Au/MoS 2 interface and the quick separation of photogenerated carriers induced by the piezoelectric potential. Furthermore, the edge sites and S defects of MoS 2 are directly proven to be the active sites for Au(I) reduction through the transmission electron microscopy (TEM) measurement, while the edge sites play a dominant role. This work may promote the development of piezo-photocatalysis and facilitate the substitution of environmentally friendly thiosulfate leaching to cyanidation.

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Section: E 2gmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Piezo-Photocatalytic Reduction of Au(I) by Defect-Rich MoS₂ Nanoflowers for Efficient Gold Recovery from a Thiosulfate Solution

Chen

Liang

et al. 2020

ACS Sustainable Chem. Eng.

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“…In other words, an instant increase in the intensity is attributed to the formation of stable colloidal aggregates, which in turn enhances the SPR and produces higher absorption intensity. The greater the number of “stable colloidal particles”, the greater is the SPR and the higher is the intensity. , Therefore, by increasing the spacer length, stable colloidal complex formation between SDS stabilized and gemini surfactants of longer spacer increases, and hence intensity passes through a wide maximum in the form of a sine curve. This is further supplemented by the overall decrease in the size of the NP–NP complex in the same order (Figure c).…”

Section: Results and Discussionmentioning

confidence: 99%

Applications of Molecular Structural Aspects of Gemini Surfactants in Reducing Nanoparticle–Nanoparticle Interactions

Kaur¹,

Singh

Khullar³

et al. 2019

Langmuir

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Oppositely charged nanoparticle (NP)−nanoparticle (NP) interactions were studied by titrating sodium dodecyl sulfate (SDS) stabilized NPs with cetyltrimethylammonium bromide (CTAB) stabilized NPs at constant temperature with the help of UV−visible and dynamic light scattering measurements. CTAB stabilized NPs were systematically replaced with a series of cationic gemini surfactants to demonstrate the effect of head group and hydrocarbon tail modifications on the electrostatic interactions with SDS stabilized NPs. Introduction of the dimeric gemini head group (alkylammonium or imidazolium), spacer length, and double tail hydrocarbon length all significantly reduced the NP−NP interactions and delayed their salting-out process. They lead to the formation of stable colloidal aqueous solubilized NP−NP complexes. The results concluded that NP−NP interactions can be overcome if appropriately stabilized NPs are used to maintain their colloidal stability so as to achieve maximum applicability.

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“…Recent experiments have demonstrated the formation of gold NPs in glass with a red-shifted LSPR band in different glass systems [12][13][14]. Laser irradiation of glass also marking a significant leap forward in the domain of the formation of NPs with tunable LSPR band [15][16][17]. These studies collectively underline the significant potential of gold NPs in glass matrices for enhancing and manipulating LSPR for various technological applications.…”

Section: Introductionmentioning

confidence: 88%

Ultra-broadband Plasmon Resonance in Gold Nanoparticles Precipitated in ZnO-Al2O3-SiO2 Glass

Shakhgildyan,

Avakyan,

Atroshchenko

et al. 2024

Preprint

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Optical materials with a tunable localized surface plasmon resonance (LSPR) are of a great interest for applications in photonics and optoelectronics. In the present study we explored the potential of generating the LSPR band with an ultra-broad range of over 1000 nm in gold nanoparticles (NPs) precipitated through the thermal treatment in ZnO-Al2O3-SiO2 glass. Using the optical absorption spectroscopy, we demonstrated that the LSPR band's position and shape can be finely controlled by varying the thermal treatment route. Comprehensive methods including Raman spectroscopy, X-ray diffraction and high-resolution transmission electron microscopy were used to study the glass structure, while computational approaches were used for the theoretical description of the absorption spectra. Obtained results allowed us to suggest a scenario responsible for such abnormal LSPR band broadening which includes possible interparticle plasmonic coupling effect taking place during the liquid-liquid phase separation of the heat-treated glass. The formation of gold NPs with an ultra-broad LSPR band in glasses holds promise for sensitizing rare earth ion luminescence for new photonics devices.

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Effect of thermal post-treatment on surface plasmon resonance characteristics of gold nanoparticles formed in glass by UV laser irradiation

Cited by 12 publications

References 36 publications

Piezo-Photocatalytic Reduction of Au(I) by Defect-Rich MoS₂ Nanoflowers for Efficient Gold Recovery from a Thiosulfate Solution

Piezo-Photocatalytic Reduction of Au(I) by Defect-Rich MoS₂ Nanoflowers for Efficient Gold Recovery from a Thiosulfate Solution

Applications of Molecular Structural Aspects of Gemini Surfactants in Reducing Nanoparticle–Nanoparticle Interactions

Ultra-broadband Plasmon Resonance in Gold Nanoparticles Precipitated in ZnO-Al2O3-SiO2 Glass

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Effect of thermal post-treatment on surface plasmon resonance characteristics of gold nanoparticles formed in glass by UV laser irradiation

Cited by 12 publications

References 36 publications

Piezo-Photocatalytic Reduction of Au(I) by Defect-Rich MoS2 Nanoflowers for Efficient Gold Recovery from a Thiosulfate Solution

Piezo-Photocatalytic Reduction of Au(I) by Defect-Rich MoS2 Nanoflowers for Efficient Gold Recovery from a Thiosulfate Solution

Applications of Molecular Structural Aspects of Gemini Surfactants in Reducing Nanoparticle–Nanoparticle Interactions

Ultra-broadband Plasmon Resonance in Gold Nanoparticles Precipitated in ZnO-Al2O3-SiO2 Glass

Contact Info

Product

Resources

About

Piezo-Photocatalytic Reduction of Au(I) by Defect-Rich MoS₂ Nanoflowers for Efficient Gold Recovery from a Thiosulfate Solution

Piezo-Photocatalytic Reduction of Au(I) by Defect-Rich MoS₂ Nanoflowers for Efficient Gold Recovery from a Thiosulfate Solution