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- W2038682457 abstract "This paper deals with the impact of dipole moment (1.66–3.96 D) and refractive index (1.333–1.422) of the dispersion solvent on the plasmon absorption, surface charge, zeta potential, and adsorption properties of Au nanorods (AuNRs). AuNRs (length ≈ 53 nm and width ≈ 20 nm) undergo agglomeration (size 50–180 nm) with increase in the dipole moment of solvent (iPrOH < MeOH < DMF < DMSO). Whereas, no such coagulation occurs in H2O and CCl4 suspension as confirmed by DLS and TEM size distribution. The electrostatic interaction of AuNRs with its surface adsorbed solvent dipoles leads to alteration of the their ionic state, absolute electronic charge and zeta potential (+49.79 mV in H2O, +8.99 mV in DMF and −4.65 mV in MeOH dispersion) to a greater extent. This interaction distinctly modifies the adsorption behavior of polar molecules like p-nitrophenol and salicylic acid on AuNRs surface, as evidenced by the measured changes in their electro-kinetic parameters. As a result, we observe a substantial difference in catalytic and co-catalytic activities of AuNRs dispersed in various solvents as mentioned above because the catalytic properties of AuNRs are strongly dependent on the type of solvent in which they are dispersed." @default.
- W2038682457 created "2016-06-24" @default.
- W2038682457 creator A5031543734 @default.
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- W2038682457 date "2015-02-01" @default.
- W2038682457 modified "2023-10-01" @default.
- W2038682457 title "Physicochemical and catalytic properties of Au nanorods micro-assembled in solvents of varying dipole moment and refractive index" @default.
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- W2038682457 doi "https://doi.org/10.1016/j.materresbull.2014.11.012" @default.
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