scholarly journals Effect of surface ligands on gold nanocatalysts for CO2 reduction

2020 ◽  
Vol 11 (45) ◽  
pp. 12298-12306
Author(s):  
Hongyu Shang ◽  
Spencer K. Wallentine ◽  
Daniel M. Hofmann ◽  
Quansong Zhu ◽  
Catherine J. Murphy ◽  
...  
Keyword(s):  
Metal Ions ◽  
Au Nanoparticles ◽  
Co2 Reduction ◽  
Permeable Membrane ◽  
Surface Ligands ◽  
Minimal Loss ◽  
Effect Of Surface

Dodecanethiol on Au nanoparticles significantly enhances selectivity and stability with minimal loss in activity by acting as a CO2-permeable membrane, which blocks the deposition of metal ions that are otherwise responsible for rapid deactivation.

Effect of surface chemistry on bio-conjugation and bio-recognition abilities of 2D germanene materials

Nanoscale ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 1893-1903
Author(s):  
Wei Li Ang ◽  
Jiri Sturala ◽  
Nikolas Antonatos ◽  
Zdeněk Sofer ◽  
Alessandra Bonanni
Keyword(s):  
Surface Chemistry ◽  
Strong Influence ◽  
Intrinsic Fluorescence ◽  
Surface Ligands ◽  
Chemically Modified ◽  
Recognition Efficiency ◽  
Effect Of Surface

The surface ligands on chemically modified germanenes have strong influence on the intrinsic fluorescence, on the bio-conjugation ability and the bio-recognition efficiency of the material towards the detection of a specific analyte.

Two-Photon Sensing of Dopamine by Using Au Nanoparticles

2015 ◽  
Vol 738-739 ◽  
pp. 31-37
Author(s):  
Cui Feng Jiang ◽  
Neng Yue Gao ◽  
Qi Sheng Wu ◽  
Yu Sun ◽  
Qing Hua Xu
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Detection Limit ◽  
Metal Ions ◽  
Gold Nanoparticle ◽  
Au Nanoparticles ◽  
Cross Linking ◽  
Au Nps ◽  
Two Photon ◽  
Catechol Group

In this paper, we demonstrated a gold nanoparticle based two-photon photoluminescence (TPPL) assay for the detection of dopamine with the detection limit of 0.3 μM. Protonated dopamine molecules can bind bidentately to surface of gold atoms through the catechol group. The adsorption of dopamine displaces the stabilizing agent of citrate groups, and neutralizes the charge of solution, resulting in non-cross linking aggregation of Au NPs. Aggregation of Au NPs could induce significantly enhanced TPPL. Thus, a simple TPPL assay was designed. We have shown that when Au NPs solution was mixed with dopamine, TPPL intensity increased by about 47 times. The mechanism of sensing assay has been discussed. In addition, the TPPL assay was highly selective to dopamine and it can distinguish from uric acid, ascorbic acid and metal ions.

scholarly journals Morphology control and optical properties of CdSe nanorods by surface ligands-=SUP=-*-=/SUP=-

2019 ◽  
Vol 45 (16) ◽  
pp. 23
Author(s):  
Zhiyuan Lin ◽  
Jinhua Li ◽  
Ke Feng ◽  
Yue Wang ◽  
Xueying Chu ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Optical Materials ◽  
Crystal Surface ◽  
Crystal Face ◽  
Absorption And Emission ◽  
Surface Ligands ◽  
Optical Stability ◽  
Cdse Nanorod ◽  
Cdse Nanorods ◽  
Effect Of Surface

In this paper, CdSe nanorods were prepared via solvothermal synthesis, the effect of surface ligands on the morphology of nanorods was investigated under the premise by tuning the percentage of surface ligands in the precursors. Experimental results show that the absorption and emission spectrum of CdSe nanorod with different aspect ratio varying from 4:1 to 2:1 have a red-shift, and the aspect ratio gradually decreases as the percentage of tetradecylphosphoric acid (TDPA) in the precursor increases. In addition, the CdSe optical stability improves as the percentage of TDPA increases. It is also shown that the crystal surface, which is not covered by TDPA, has an increased surface energy, which results in rapid growth of the crystal face and the formation of a rod-like structure. As a result, the effects of anisotropic absorption and emission, along the long axis properties can find many applications in the fields of optics, optical materials.

Electrochemical CO2 reduction to methane with remarkably high Faradaic efficiency in the presence of a proton permeable membrane

2020 ◽  
Vol 13 (10) ◽  
pp. 3567-3578 ◽  
Author(s):  
Hanqing Pan ◽  
Christopher J. Barile
Keyword(s):  
Co2 Reduction ◽  
Permeable Membrane ◽  
Faradaic Efficiency ◽  
Electrochemical Co2 Reduction

Cu electrodes modified with a Nafion layer catalyze the reduction of CO2 to CH4 with up to 88% Faradaic efficiency.

Effect of Surface Reforming via O3 Treatment on the Electrochemical CO2 Reduction Activity of a Ag Cathode

2020 ◽  
Vol 3 (7) ◽  
pp. 6552-6560
Author(s):  
Masaatsu Ishida ◽  
Soichi Kikkawa ◽  
Kazutaka Hori ◽  
Kentaro Teramura ◽  
Hiroyuki Asakura ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Reduction Activity ◽  
Electrochemical Co2 Reduction ◽  
Effect Of Surface

The surface chemistry of iron oxide nanocrystals: surface reduction of γ-Fe2O3 to Fe3O4 by redox-active catechol surface ligands

2018 ◽  
Vol 6 (2) ◽  
pp. 326-333 ◽  
Author(s):  
P. Daniel ◽  
S. I. Shylin ◽  
H. Lu ◽  
M. N. Tahir ◽  
M. Panthöfer ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Iron Oxide ◽  
Surface Chemistry ◽  
Surface Functionalization ◽  
Surface Ligands ◽  
Surface Reduction ◽  
Redox Active ◽  
Structural And Magnetic Properties ◽  
Effect Of Surface

The effect of surface functionalization on the structural and magnetic properties of catechol-functionalized iron oxide magnetic (γ-Fe2O3) nanocrystals was investigated.

Sign in / Sign up

Export Citation Format

Share Document