One-pot synthesis of size-tunable hollow gold nanoshells via APTES-in-water suspension

• Published in: Colloids and surfaces. A, Physicochemical and engineering aspects Vol. 502; pp. 6 - 12
• Main Authors: Guan, Yanan, Xue, Zheng, Liang, Jinglun, Huang, Zhenzhen, Yang, Wensheng
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 05.08.2016
• Subjects: 3-Aminopropyltriethoxylsilane (APTES); Direct reduction; Droplets; Flexibility; Gold; Gold nanoshells; Lasers; Nanostructure; Photothermal conversion; Plasmons; Strategy; Suspension; Gold nanoshells; Suspension; APTES; 3-Aminopropyltriethoxylsilane (APTES); Photothermal conversion
• ISSN: 0927-7757; 1873-4359
• DOI: 10.1016/j.colsurfa.2016.04.053

[Display omitted] •Hollow gold nanoshells are prepared by using APTES-in-water suspension as templates.•Diameters and surface plasmon resonance of the nanoshells could be readily tuned by adjusting the HAuCl4/APTES ratio in the reaction system.•The hollow nanoshells exhibit excellent photothermal performance and stability. A one-pot synthetic strategy was developed for fabrication of hollow gold nanoshells by direct reduction of HAuCl4 in 3-aminopropyltriethoxysilane (APTES)-in-water suspension. Diameters of the APTES droplets which may act as templates for the hollow gold nanoshells could be readily tuned by changing the concentration of HAuCl4 used in the reactions. This flexibility facilitated the tailoring of the sizes of the gold naoshells in the range of 37–96nm and their corresponding surface plasmon resonance (SPR) in the visible and near infrared region of 657–957nm. The as-prepared hollow gold nanoshells showed high photothermal conversion efficiency (up to 45%) and excellent stability under laser irradiation.