PMID- 31596592
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20200629
LR  - 20200629
IS  - 1520-5827 (Electronic)
IS  - 0743-7463 (Linking)
VI  - 35
IP  - 44
DP  - 2019 Nov 5
TI  - Kinetic Rate Constants of Gold Nanoparticle Deposition on Silicon.
PG  - 14258-14265
LID - 10.1021/acs.langmuir.9b02074 [doi]
AB  - We fabricated gold nanoparticles on nanoporous silicon microparticles using 
      electroless deposition in a hydrofluoric acid solution containing gold chloride. 
      The reaction was followed by UV spectrometer analysis of the absorbance of the 
      solution (proportional to the nanoparticle concentration) for two temperatures 
      (20 and 50  degrees C). The results indicate that the process is autocatalytic, described 
      by a pseudo-first-order reaction, the apparent rate constant k(obs) of which was 
      determined by utilizing UV spectrometer data. We found that the reaction rate 
      constant at 20  degrees C is 7 x 10(-3) s(-1) and that at 50  degrees C is 2.9 x 10(-2) s(-1). 
      Scanning electron microscope (SEM) analysis of samples and diffusion-limited 
      aggregation (DLA) simulations were used to validate the results. This study aims 
      to resolve the kinetics of the electroless deposition of gold on silicon at the 
      nanoscale, in the present state of art missing a quantitative characterization, 
      for certain conditions of growth and given values of temperature and 
      concentration of the reagents. Results may have applications to the synthesis of 
      gold nanoparticles and their use as nanosensors, drug delivery systems, or metal 
      nanometamaterials with advanced optical properties.
FAU - Onesto, Valentina
AU  - Onesto V
AUID- ORCID: 0000-0002-2308-4126
AD  - Department of Experimental and Clinical Medicine , University Magna Graecia , 
      Catanzaro 88100 , Italy.
FAU - Gentile, Francesco
AU  - Gentile F
AD  - Department of Electrical Engineering and Information Technology , University 
      Federico II , Naples 80125 , Italy.
FAU - Russo, Mario
AU  - Russo M
AD  - Department of Experimental and Clinical Medicine , University Magna Graecia , 
      Catanzaro 88100 , Italy.
FAU - Villani, Marco
AU  - Villani M
AUID- ORCID: 0000-0002-9229-3490
AD  - IMEM-CNR , Parco Area delle Scienze , 37/A Parma 43123 , Italy.
FAU - Candeloro, Patrizio
AU  - Candeloro P
AD  - Department of Experimental and Clinical Medicine , University Magna Graecia , 
      Catanzaro 88100 , Italy.
FAU - Perozziello, Gerardo
AU  - Perozziello G
AD  - Department of Experimental and Clinical Medicine , University Magna Graecia , 
      Catanzaro 88100 , Italy.
FAU - Malara, Natalia
AU  - Malara N
AD  - Department of Experimental and Clinical Medicine , University Magna Graecia , 
      Catanzaro 88100 , Italy.
FAU - Fabrizio, Enzo Di
AU  - Fabrizio ED
AD  - Physical Science & Engineering Division , King Abdullah University of Science and 
      Technology , Thuwal 23955-6900 , Saudi Arabia.
FAU - Coluccio, M Laura
AU  - Coluccio ML
AUID- ORCID: 0000-0002-9987-2348
AD  - Department of Experimental and Clinical Medicine , University Magna Graecia , 
      Catanzaro 88100 , Italy.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20191023
PL  - United States
TA  - Langmuir
JT  - Langmuir : the ACS journal of surfaces and colloids
JID - 9882736
SB  - IM
EDAT- 2019/10/10 06:00
MHDA- 2019/10/10 06:01
CRDT- 2019/10/10 06:00
PHST- 2019/10/10 06:00 [pubmed]
PHST- 2019/10/10 06:01 [medline]
PHST- 2019/10/10 06:00 [entrez]
AID - 10.1021/acs.langmuir.9b02074 [doi]
PST - ppublish
SO  - Langmuir. 2019 Nov 5;35(44):14258-14265. doi: 10.1021/acs.langmuir.9b02074. Epub 
      2019 Oct 23.