Optical properties and microstructure of Au nanorods via seed solution amount variation synthesized by seed-mediated growth method

Can Plasmonic Effect Cause an Increase in the Catalytic Reduction of p-nitrophenol by Sodium Borohydride over Au Nanorods?

“…In the case of the present experimental condition, the temperature difference (ΔT) caused by the surface plasmons under the 520 nm light illumination is about 2.83 × 10 −6 K, so it is confirmed that the plasmonic heating effect cannot lead to a change in the solution temperature; this is also in accordance with other studies. 28,29 Therefore, a plausible conclusion may be obtained that the nonthermal effect of surface plasmons, i.e., Figure 6A,B shows the dependence of ln(A 0 /A t ) on time in the dark and under 520 nm light illumination at different set temperatures, respectively. It is seen that the catalytic conversions of 4-NP are highly sensitive to temperature, independent of light illumination.…”

“…Au nanorods were synthesized by the seed-mediated growth method. 29 The seed solution was first prepared by the addition of a freshly prepared, ice-cold 1.2 mL solution of 0.01 M NaBH 4 (Shandong XiYa Chemical Industry Co., Ltd.) into a mixture of 1 mL of 5 mM HAuCl 4 (Sinopharm Chemical Reagent Co., Ltd.) and 19 mL of 0.1 M hexadecyl trimethyl ammonium bromide (CTAB, Beijing Biotopped Science & Technology Co., Ltd.), which was kept at 30 °C for 2.5 h for further use. The growth solution was prepared as follows: different amounts of 4 mM AgNO 3 solution (Sinopharm Chemical Reagent Co., Ltd.) were mixed with 3.65 g of CTAB dissolved in 85 mL of deionized water under stirring for 15 min.…”

Near-infrared (NIR) surface-enhanced Raman spectroscopy (SERS) study of novel functional phenothiazines for potential use in dye sensitized solar cells (DSSC)

“…In addition to spherical gold nanoparticles, gold nanorods (Au-NRs) were also prepared for SERS experiments, because the LSPR of Au-NRs is tuneable through their length and their aspect ratio value. 46,53,54 Therefore, the nanorod dispersion did not require induced agglomeration (by KCl addition) to approach the excitation wavelength of 1064 nm. Thus, the nanorods did not precipitate, but formed a stable dispersion throughout the measurements.…”

In‐Situ covalent synthesis of gold nanorods on GO surface as ultrasensitive Raman probe

“…Normally, rough surface of a noble metal such as Ag and Au is often used as SERS substrate of Raman probe because of the huge electromagnetic mechanism (EM) which relies on the enhancement of local electromagnetic field . Among these SERS substrates of noble metals, anisotropic metallic nanoparticles such as gold nanorods (AuNRs) have been demonstrated to be better candidates than spherical gold nanoparticles owing to the tunable surface plasmon resonance and the strong chemical effect between adsorbate and the {110} facets . Furthermore, plasmon resonance bands of AuNRs can be tuned from the visible to near‐infrared (NIR) region by adjusting their aspect ratio and composition.…”