TY - JOUR
T1 - Facile Synthesis of a Broad Range of Colloidal Nanocrystals by Membrane-Mediated pH Gradient under Ambient Conditions
AU - Ranjbar Bahadori, Shahab
AU - Hart, Ryan
AU - Mulgaonkar, Aditi
AU - Wang, Yunfeng
AU - Fuentes, Samuel
AU - Hong, Yi
AU - Cao, Ye
AU - Jiang, Jiechao
AU - Sun, Xiankai
AU - Hao, Yaowu
N1 - Publisher Copyright:
© 2024 by the authors.
PY - 2024/3
Y1 - 2024/3
N2 - We report a simple synthesis process for a wide variety of ultrasmall nanocrystals. Simply immersing a dialysis bag containing an aqueous solution of a metal salt mixed with citric acid in a NaOH solution reservoir for 10 min, nanocrystals measuring only a few nanometers in size are formed inside the dialysis bag. We demonstrated the synthesis of ultrasmall nanocrystals of Co, Ni, Cu, Ag, Au, Pd, Cu2O, FeO, and CeO2, and found that the gradual change in pH caused by the diffusion of OH− ions through the dialysis membrane played an essential role in the formation of these nanocrystals. This method can be readily adapted for almost all transition metal elements, providing researchers in the fields of catalysis and nanomedicine an easy access to a wide range of ultrasmall metal and oxide nanocrystals.
AB - We report a simple synthesis process for a wide variety of ultrasmall nanocrystals. Simply immersing a dialysis bag containing an aqueous solution of a metal salt mixed with citric acid in a NaOH solution reservoir for 10 min, nanocrystals measuring only a few nanometers in size are formed inside the dialysis bag. We demonstrated the synthesis of ultrasmall nanocrystals of Co, Ni, Cu, Ag, Au, Pd, Cu2O, FeO, and CeO2, and found that the gradual change in pH caused by the diffusion of OH− ions through the dialysis membrane played an essential role in the formation of these nanocrystals. This method can be readily adapted for almost all transition metal elements, providing researchers in the fields of catalysis and nanomedicine an easy access to a wide range of ultrasmall metal and oxide nanocrystals.
KW - liquid diffusion
KW - nanocrystals
KW - nanoparticle synthesis
UR - http://www.scopus.com/inward/record.url?scp=85188748019&partnerID=8YFLogxK
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U2 - 10.3390/cryst14030240
DO - 10.3390/cryst14030240
M3 - Article
AN - SCOPUS:85188748019
SN - 2073-4352
VL - 14
JO - Crystals
JF - Crystals
IS - 3
M1 - 240
ER -