PMID- 33533461
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20210205
LR  - 20210205
IS  - 1580-3155 (Electronic)
IS  - 1318-0207 (Linking)
VI  - 67
IP  - 4
DP  - 2020 Dec
TI  - GO/PAMAM as a High Capacity Adsorbent for Removal of Alizarin Red S: Selective 
      Separation of Dyes.
PG  - 1124-1138
AB  - Adsorption of Alizarin Red S (ARS) on graphene oxide/poly(amidoamine) (GO/PAMAM) 
      was studied at different ARS initial concentrations, temperatures, pHs, shaking 
      rates and contact times. Adsorption sites of GO/PAMAM were phenolic -OHgroup of 
      GO and amine groups (-NH2, -NH3+ and -NHR2+) of PAMAM dendrimer moieties of 
      GO/PAMAM. At pH = 2 and 318 K, maximum adsorption capacity of the adsorbent was 
      1275.2 mg g-1 which is one of the highest capacity in the literature. Thus, 
      GO/PAMAM in this work acted as a superadsorbent for ARS. At the incipient of 
      adsorption, molecules were adsorbed on sites that was reaction-controlled step, 
      (Ea = 114.5 kJ mol-1). Adsorption of on the remaining sites was 
      diffusion-controlled. In alkaline media, two other types of ARS molecules were 
      identified during that were adsorbed on and sites. Further increasing the pH of 
      the solution, decreased the number these two sites and yielded a reduced 
      adsorption capacity . Methylene blue (MB), thionine (Th), pyronin Y (PY), 
      acridine orange (AO), methyl blue (MEB) and janus green (JG) dyes were 
      selectively separated from their mixtures with ARS molecules using GO/PAMAM at pH 
      of 2. The used adsorbent was recycled efficiently by using ethylenediamine very 
      fast.
FAU - Rafi, Mohammad
AU  - Rafi M
FAU - Samiey, Babak
AU  - Samiey B
FAU - Cheng, Chil-Hung
AU  - Cheng CH
LA  - eng
PT  - Journal Article
PL  - Slovenia
TA  - Acta Chim Slov
JT  - Acta chimica Slovenica
JID - 101247110
SB  - IM
EDAT- 2021/02/04 06:00
MHDA- 2021/02/04 06:01
CRDT- 2021/02/03 08:38
PHST- 2021/02/03 08:38 [entrez]
PHST- 2021/02/04 06:00 [pubmed]
PHST- 2021/02/04 06:01 [medline]
AID - Rafi-2020-4 [pii]
PST - ppublish
SO  - Acta Chim Slov. 2020 Dec;67(4):1124-1138.