PMID- 37295693
OWN - NLM
STAT- MEDLINE
DCOM- 20230717
LR  - 20230718
IS  - 1879-0003 (Electronic)
IS  - 0141-8130 (Linking)
VI  - 244
DP  - 2023 Jul 31
TI  - Cellulose nanocrystals doped silver nanoparticles immobilized agar gum for 
      efficient photocatalytic degradation of malachite green.
PG  - 125221
LID - S0141-8130(23)02115-3 [pii]
LID - 10.1016/j.ijbiomac.2023.125221 [doi]
AB  - The present study involves the synthesis of green functional material based on 
      the silver nanoparticle (Ag NPs) doped cellulose nanocrystals (CNC) immobilized 
      agar gum (AA) biopolymer using chemical coprecipitation method. The stabilization 
      of Ag NPs in cellulose matrix and functionalization of the synthesized material 
      through agar gum was analyzed using various spectroscopic techniques such as 
      Fourier Transform Infrared (FTIR), Scanning electron microscope (SEM), Energy 
      X-Ray diffraction (EDX), Photoelectron X-ray (XPS), Transmission electron 
      microscope (TEM), Selected area energy diffraction (SAED) and ultraviolet visible 
      (UV-Vis) spectroscopy. The XRD results suggested that the synthesized AA-CNC@Ag 
      BNC material is composed of 47 % crystalline and 53 % amorphous nature having 
      distorted hexagonal structure due to capping of Ag NPs by amorphous biopolymer 
      matrix. The Debye-Scherer crystallite sized was calculated as 18 nm which is 
      found in close agreement with TEM analysis (19 nm). The SAED yellow fringes 
      simulates the miller indices values with XRD patterns and supported the surface 
      functionalization of Ag NPs by biopolymer blend of AA-CNC. The XPS data supported 
      the presence of Ag(0) as indexed by Ag3d orbital corresponding to Ag3d(3/2) at 
      372.6 eV and Ag3d(5/2) at 366.6 eV. The surface morphological results revealed a 
      flaky surface of the resultant material having well distributed Ag NPs in the 
      matrix. The EDX and atomic concentration results given by XPS supported the 
      presence if C, O and Ag in the bionanocomposite material. The UV-Vis results 
      suggested that the material is both UV and visible light active having multiple 
      SPR effects with anisotropy. The material was explored as a photocatalyst for 
      remediation of wastewater contaminated by malachite green (MG) using advance 
      oxidation process (AOP). Photocatalytic experiments were performed in order to 
      optimize various reaction parameters such as irradiation time, pH, catalyst dose 
      and MG concentration. The obtained results showed that almost 98.85 % of MG was 
      degraded by using 20 mg of catalyst at pH 9 for 60 min of irradiation. The 
      trapping experiments revealed that (*)O(2)(-) radicals played primary role in MG 
      degradation. This study will provide new possible strategies for the remediation 
      of wastewater contaminated by MG.
CI  - Copyright (c) 2023 Elsevier B.V. All rights reserved.
FAU - Bassi, Akshara
AU  - Bassi A
AD  - Environmental Research Lab, Department of Chemistry, Chandigarh University, 
      Mohali, Punjab 140413, India.
FAU - Kanungo, Kushal
AU  - Kanungo K
AD  - Environmental Research Lab, Department of Chemistry, Chandigarh University, 
      Mohali, Punjab 140413, India.
FAU - Koo, Bon Heun
AU  - Koo BH
AD  - School of Materials Science and Engineering, Changwon National University, 
      Changwon 51140, Gyeongnam, South Korea. Electronic address: bhkoo@changwon.ac.kr.
FAU - Hasan, Imran
AU  - Hasan I
AD  - Department of Chemistry, College of Science, King Saud University, Riyadh 11451, 
      Saudi Arabia. Electronic address: iabdulateef@ksu.edu.sa.
LA  - eng
PT  - Journal Article
DEP - 20230608
PL  - Netherlands
TA  - Int J Biol Macromol
JT  - International journal of biological macromolecules
JID - 7909578
RN  - 12058M7ORO (malachite green)
RN  - 3M4G523W1G (Silver)
RN  - 9002-18-0 (Agar)
RN  - 9004-34-6 (Cellulose)
RN  - 0 (Wastewater)
SB  - IM
MH  - *Metal Nanoparticles/chemistry
MH  - Silver/chemistry
MH  - Agar
MH  - Cellulose/chemistry
MH  - Wastewater
OTO - NOTNLM
OT  - Ag-doped CNC
OT  - Biopolymer
OT  - Malachite green
OT  - Photocatalytic degradation
OT  - Surface plasmon resonance
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/06/10 15:13
MHDA- 2023/07/17 06:42
CRDT- 2023/06/09 19:27
PHST- 2023/03/28 00:00 [received]
PHST- 2023/05/25 00:00 [revised]
PHST- 2023/06/02 00:00 [accepted]
PHST- 2023/07/17 06:42 [medline]
PHST- 2023/06/10 15:13 [pubmed]
PHST- 2023/06/09 19:27 [entrez]
AID - S0141-8130(23)02115-3 [pii]
AID - 10.1016/j.ijbiomac.2023.125221 [doi]
PST - ppublish
SO  - Int J Biol Macromol. 2023 Jul 31;244:125221. doi: 10.1016/j.ijbiomac.2023.125221. 
      Epub 2023 Jun 8.