PMID- 28788326
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 6
IP  - 9
DP  - 2013 Sep 18
TI  - Preparation and Morphology Studies of Nano Zinc Oxide Obtained Using Native and 
      Modified Chitosans.
PG  - 4198-4212
LID - 10.3390/ma6094198 [doi]
AB  - Nano zinc oxide (ZnO) with moderate surface area and high pore volume were 
      prepared using a facile preparation method. Chitosan was utilized as both 
      chelating and structure directing agent. The application of chitosans in this 
      study suggested that even biowastes can be served in a productive manner 
      economically. The surface modification of chitosan was carried out in order to 
      increase the interaction between chitosan and zinc ions. The effect of sodium 
      chloroacetate and isopropyl alcohol on the surface modification process was also 
      explored. FT-IR (Fourier transform-infrared spectrometer) and TGA 
      (Thermogravimetric analyses) analyses revealed that modified chitosans are more 
      stable than those of unmodified chitosan. Among surface modified chitosans, CMC1 
      (1.5 M sodium chloroacetate and 75% isopropyl alcohol) showed enhanced surface 
      properties. Freundlich adsorption isotherms as preliminary studies confirmed that 
      modified chitosan showed enhanced interaction with zinc ions. The interaction of 
      zinc salt with chitosans produced a zinc-chitosan polymer. This finally cleaved 
      upon calcination to produce nano ZnO. The effects of different calcination 
      temperatures indicated that 450  degrees C is the optimum calcination temperature to 
      produce the nano ZnO with favored surface area (15.45 m(2)/g) and pore size (221.40 
      nm). SEM (Scanning electron microscope) and TEM (Transmission electron 
      microscope) of ZnO indicated that uniform particle and shape distributions were 
      obtained at low calcination temperature (450  degrees C).
FAU - Thirumavalavan, Munusamy
AU  - Thirumavalavan M
AD  - Graduate Institute of Environmental Engineering, National Central University, 
      Chung-Li, Taoyuan County, 320, Taiwan. mtvala@yahoo.com.
FAU - Huang, Kai-Lin
AU  - Huang KL
AD  - Graduate Institute of Environmental Engineering, National Central University, 
      Chung-Li, Taoyuan County, 320, Taiwan. kuroleo@msn.com.
FAU - Lee, Jiunn-Fwu
AU  - Lee JF
AD  - Graduate Institute of Environmental Engineering, National Central University, 
      Chung-Li, Taoyuan County, 320, Taiwan. jflee@ncuen.ncu.edu.tw.
LA  - eng
PT  - Journal Article
DEP - 20130918
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC5452647
OTO - NOTNLM
OT  - BET
OT  - SEM
OT  - chitosans
OT  - modification
OT  - nano ZnO
COIS- The authors declare no conflict of interest.
EDAT- 2013/09/18 00:00
MHDA- 2013/09/18 00:01
PMCR- 2013/09/18
CRDT- 2017/08/10 06:00
PHST- 2013/07/17 00:00 [received]
PHST- 2013/08/26 00:00 [revised]
PHST- 2013/09/16 00:00 [accepted]
PHST- 2017/08/10 06:00 [entrez]
PHST- 2013/09/18 00:00 [pubmed]
PHST- 2013/09/18 00:01 [medline]
PHST- 2013/09/18 00:00 [pmc-release]
AID - ma6094198 [pii]
AID - materials-06-04198 [pii]
AID - 10.3390/ma6094198 [doi]
PST - epublish
SO  - Materials (Basel). 2013 Sep 18;6(9):4198-4212. doi: 10.3390/ma6094198.