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Summers PK, Angeloski A, Wuhrer R, Cortie MB, McDonagh AM. The fate of organic species upon sintering of thiol-stabilised gold nanoparticles under different atmospheric conditions. Phys Chem Chem Phys 2023; 25:7170-7175. [PMID: 36810448 DOI: 10.1039/d2cp05822g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Understanding and controlling the sintering behavior of gold nanoparticles is important for applications such as printed electronics, catalysis and sensing that utilise these materials. Here we examine the processes by which thiol-protected gold nanoparticles thermally sinter under a variety of atmospheres. We find that upon sintering, the surface-bound thiyl ligands exclusively form the corresponding disulfide species when released from the gold surface. Experiments conducted using air, hydrogen, nitrogen, or argon atmospheres revealed no significant differences between the temperatures of the sintering event nor on the composition of released organic species. When conducted under high vacuum, the sintering event occurred at lower temperatures compared to ambient pressures in cases where the resulting disulfide had relatively high volatility (dibutyl disulfide). Hexadecylthiol-stabilized particles exhibited no significant differences in the temperatures of the sintering event under ambient pressures compared to high vacuum conditions. We attribute this to the relatively low volatility of the resultant dihexadecyl disulfide product.
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Affiliation(s)
- Paige K Summers
- School of Mathematical and Physical Sciences, University of Technology Sydney, Broadway, Ultimo, NSW, 2007, Australia.
| | - Alexander Angeloski
- School of Mathematical and Physical Sciences, University of Technology Sydney, Broadway, Ultimo, NSW, 2007, Australia. .,Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Kirrawee DC, NSW, 2232, Australia
| | - Richard Wuhrer
- Advanced Materials Characterisation Facility (AMCF), Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - Michael B Cortie
- School of Mechanical, Materials, Mechatronics and Biomedical Engineering, University of Wollongong, Northfields Ave, Wollongong, NSW, 2522, Australia
| | - Andrew M McDonagh
- School of Mathematical and Physical Sciences, University of Technology Sydney, Broadway, Ultimo, NSW, 2007, Australia.
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Ibrahim I, Seo DH, Park MJ, Angeloski A, McDonagh A, Bendavid A, Shon HK, Tijing L. Highly stable gold nanolayer membrane for efficient solar water evaporation under a harsh environment. Chemosphere 2022; 299:134394. [PMID: 35331744 DOI: 10.1016/j.chemosphere.2022.134394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 03/16/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
Interfacial solar water evaporation has attracted tremendous attention for sunlight harvesting for water purification. However, salt formation and stability of the photothermal materials (PTMs) remain a challenge that need addressing before bringing this technology to real-world applications. In this work, a nanoscale thin film of gold (Au) on a polytetrafluoroethylene (PTFE) membrane has been prepared using a magnetic sputtering technique. The fabricated membrane displays a robust mechanical strength and chemical stability arising from the adhesiveness of the thin film Au nanolayer on the PTFE membrane as well as the chemical inertness of the noble metal PTM. The Au nanolayer/PTFE membrane with cellulose sponge substrate resulted in an evaporation rate of 0.88 kg m-2 h-1 under 1 sun intensity. Remarkable salt ion rejection of 99.9% has been obtained, meeting the required standard for drinking water. Moreover, the membrane exhibited excellent stability and reusability in natural seawater and high salinity brine (150 g/L) and even in severe conditions (acidic, basic, and oxidized). No noticeable salt formation was observed on the evaporator surface after the tests. These findings reveal promising prospects for using a magnetron sputtering technique to fabricate a stable photothermal membrane for seawater and high salinity brine desalination.
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Affiliation(s)
- Idris Ibrahim
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia
| | - Dong Han Seo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia; Energy Materials & Devices, Korea Institute of Energy Technology (KENTECH), Naju, Republic of Korea.
| | - Myoung Jun Park
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia
| | - Alexander Angeloski
- School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, 2007, Australia
| | - Andrew McDonagh
- School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, 2007, Australia
| | - Avi Bendavid
- CSIRO Manufacturing, 36 Bradfield Road, Lindfield, NSW, 2070, Australia; School of Materials Science and Engineering, University of New South Wales, Kensington, NSW, 2052, Australia
| | - Ho Kyong Shon
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia; ARC Research Hub for Nutrients in a Circular Economy, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia
| | - Leonard Tijing
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia; ARC Research Hub for Nutrients in a Circular Economy, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia.
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Scott JA, Angeloski A, Aharonovich I, Lobo CJ, McDonagh A, Toth M. In situ study of the precursor conversion reactions during solventless synthesis of Co 9S 8, Ni 3S 2, Co and Ni nanowires. Nanoscale 2018; 10:15669-15676. [PMID: 30091764 DOI: 10.1039/c8nr02093k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Synthesis of Co9S8, Ni3S2, Co and Ni nanowires by solventless thermolysis of a mixture of metal(ii) acetate and cysteine in vacuum is reported. The simple precursor system enables the nanowire phase to be tuned from pure metal (Co or Ni) to metal sulfide (Co9S8, Ni3S2) by varying the relative concentration of the metal(ii) acetate. The growth environment facilitates new insights through in situ characterization using field-emission scanning electron microscopy (FESEM) and thermogravimetric analysis with gas chromatography-mass spectrometry (TGA-GC-MS). Direct observation by FESEM shows the temperature at which nanowire growth occurs and suggests adatoms are incorporated into the base of the growing nanowire. TGA-GC-MS reveals the rates of precursor decomposition and identity of the volatilized ligand fragments during heat-up and at the nanowire growth temperature. Our results constitute a new approach for the selective fabrication of high quality Co9S8 and Ni3S2 nanowires and more importantly provides new understanding of precursor decomposition reactions that support symmetry-breaking growth in nanocrystals by heat-up synthesis.
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Affiliation(s)
- John A Scott
- School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo 2007, Australia.
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Angeloski A, Gentle AR, Scott JA, Cortie MB, Hook JM, Westerhausen MT, Bhadbhade M, Baker AT, McDonagh AM. From Lead(II) Dithiocarbamate Precursors to a Fast Response PbS Positive Temperature Coefficient Thermistor. Inorg Chem 2018; 57:2132-2140. [DOI: 10.1021/acs.inorgchem.7b03009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander Angeloski
- School of Mathematical
and Physical Sciences, University of Technology Sydney, Ultimo 2007, Australia
| | - Angus R. Gentle
- School of Mathematical
and Physical Sciences, University of Technology Sydney, Ultimo 2007, Australia
| | - John A. Scott
- School of Mathematical
and Physical Sciences, University of Technology Sydney, Ultimo 2007, Australia
| | - Michael B. Cortie
- School of Mathematical
and Physical Sciences, University of Technology Sydney, Ultimo 2007, Australia
| | | | - Mika T. Westerhausen
- School of Mathematical
and Physical Sciences, University of Technology Sydney, Ultimo 2007, Australia
| | | | - Anthony T. Baker
- College of Science, Health and Engineering, La Trobe University, Melbourne 3086, Australia
| | - Andrew M. McDonagh
- School of Mathematical
and Physical Sciences, University of Technology Sydney, Ultimo 2007, Australia
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Abstract
Intramolecular C–H⋯S interactions create restricted rotation of groups within di(isopropyl)dithiocarbate complexes.
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Affiliation(s)
- Alexander Angeloski
- School of Mathematical and Physical Sciences
- University of Technology Sydney
- Ultimo, Australia
| | - James M. Hook
- NMR Facility
- Mark Wainwright Analytical Centre
- The University of New South Wales
- Sydney, Australia
| | - Mohan Bhadbhade
- School of Chemistry
- The University of New South Wales
- Sydney, Australia
| | - Anthony T. Baker
- College of Science, Health and Engineering
- La Trobe University
- Melbourne, Australia
| | - Andrew M. McDonagh
- School of Mathematical and Physical Sciences
- University of Technology Sydney
- Ultimo, Australia
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Ung AT, Williams SG, Angeloski A, Ashmore J, Kuzhiumparambil U, Bhadbhade M, Bishop R. Formation of 3-azabicyclo[3.3.1]non-3-enes: imino amides vs. imino alkenes. Monatsh Chem 2014. [DOI: 10.1007/s00706-014-1185-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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