Direct mixture of Au^3＋ with glutathione （GSH）, which act as both reduction agents and stabilizers, in aqueous solution gave rise to production of gold nanoparticles （Au NPs） with uniform sizes of around 21 nm. T...Direct mixture of Au^3＋ with glutathione （GSH）, which act as both reduction agents and stabilizers, in aqueous solution gave rise to production of gold nanoparticles （Au NPs） with uniform sizes of around 21 nm. The GSH stabilizer Au NPs in solution show immediate aggregation after addition of 1 mol/L NaCI aqueous solution containing Pb^2＋ ions. The Pb^2＋-induced aggregation in Au NP solution is monitored by both colorimetric response and UV-vis spectroscopy. A rather broad linear range （from 0.1 to 30 pmol/L） and low detection limit （0.1 pmol/L） are explored for Au NP sensors used for detection of Pb^2＋ ions. Furthermore, the response of GSH-stabilized Au NPs toward Pb^2＋ ions is specific compared with other possible interferants （Hg^2＋, Mg^2＋, Zn^2＋, Ni^2＋, Cu^2＋, Co^2＋, Ca^2＋, Mn^2＋, Cd^2＋, and Ba^2＋）.展开更多
Fast evolving nanoseienees and nanotechnology in China has made it one of the front countries of nanotechnology development. Ill this review, we summarize some most recent progresses in nanoseienee research and nanote...Fast evolving nanoseienees and nanotechnology in China has made it one of the front countries of nanotechnology development. Ill this review, we summarize some most recent progresses in nanoseienee research and nanotechnology development in China. The topics we selected in this article include llano-fabrication, nanocatalysis, bioinspired nanoteehnology, green printing nanotechnology, nanoplasmonics, nanomedicine, nanomaterials and their applications, energy and environmental nanoteehnology, nano EHS （nanosafety）, etc. Most of them have great potentials in applications or application-related key issues in future.展开更多
文摘Direct mixture of Au^3＋ with glutathione （GSH）, which act as both reduction agents and stabilizers, in aqueous solution gave rise to production of gold nanoparticles （Au NPs） with uniform sizes of around 21 nm. The GSH stabilizer Au NPs in solution show immediate aggregation after addition of 1 mol/L NaCI aqueous solution containing Pb^2＋ ions. The Pb^2＋-induced aggregation in Au NP solution is monitored by both colorimetric response and UV-vis spectroscopy. A rather broad linear range （from 0.1 to 30 pmol/L） and low detection limit （0.1 pmol/L） are explored for Au NP sensors used for detection of Pb^2＋ ions. Furthermore, the response of GSH-stabilized Au NPs toward Pb^2＋ ions is specific compared with other possible interferants （Hg^2＋, Mg^2＋, Zn^2＋, Ni^2＋, Cu^2＋, Co^2＋, Ca^2＋, Mn^2＋, Cd^2＋, and Ba^2＋）.
文摘Fast evolving nanoseienees and nanotechnology in China has made it one of the front countries of nanotechnology development. Ill this review, we summarize some most recent progresses in nanoseienee research and nanotechnology development in China. The topics we selected in this article include llano-fabrication, nanocatalysis, bioinspired nanoteehnology, green printing nanotechnology, nanoplasmonics, nanomedicine, nanomaterials and their applications, energy and environmental nanoteehnology, nano EHS （nanosafety）, etc. Most of them have great potentials in applications or application-related key issues in future.
