PMID- 34465425
OWN - NLM
STAT- MEDLINE
DCOM- 20210902
LR  - 20210902
IS  - 1001-0742 (Print)
IS  - 1001-0742 (Linking)
VI  - 108
DP  - 2021 Oct
TI  - Competitive role of nitrogen functionalities of N doped GO and sensitizing effect 
      of Bi(2)O(3) QDs on TiO(2) for water remediation.
PG  - 107-119
LID - S1001-0742(21)00054-1 [pii]
LID - 10.1016/j.jes.2021.02.009 [doi]
AB  - The promising solar irradiated photocatalyst by pairing of bismuth oxide quantum 
      dots (BQDs) doped TiO(2) with nitrogen doped graphene oxide (NGO) nanocomposite 
      (NGO/BQDs-TiO(2)) was fabricated. It was used for degradation of organic 
      pollutants like 2,4-dichlorophenol (2,4-DCP) and stable dyes, i.e. Rhodamine B 
      and Congo Red. X-ray diffraction (XRD) profile of NGO showed reduction in 
      oxygenic functional groups and restoring of graphitic crystal structure. The 
      characteristic diffraction peaks of TiO(2) and its composites showed crystalline 
      anatase TiO(2). Morphological images represent spherical shaped TiO(2) evenly 
      covered with BQDs spread on NGO sheet. The surface linkages of NO-O-Ti, C-O-Ti, 
      Bi-O-Ti and vibrational modes are observed by Fourier transform infrared 
      spectroscopy (FTIR) and Raman studies. BQDs and NGO modified TiO(2) results into 
      red shifting in visible region as studied in diffused reflectance spectroscopy 
      (DRS). NGO and BQDs in TiO(2) are linked with defect centers which reduced the 
      recombination of free charge carriers by quenching of photoluminescence (PL) 
      intensities. X-ray photoelectron spectroscopy (XPS) shows that no peak related to 
      C-O in NGO/BQDs-TiO(2) is observed. This indicated that doping of nitrogen into 
      GO has reduced some oxygen functional groups. Nitrogen functionalities in NGO and 
      photosensitizing effect of BQDs in ternary composite have improved photocatalytic 
      activity against organic pollutants. Intermediate byproducts during photo 
      degradation process of 2,4-DCP were studied through high performance liquid 
      chromatography (HPLC). Study of radical scavengers indicated that O(2)(.-) has 
      significant role for degradation of 2,4-DCP. Our investigations propose that 
      fabricated nanohybrid architecture has potential for degradation of environmental 
      pollutions.
CI  - Copyright (c) 2021. Published by Elsevier B.V.
FAU - Noor, Saima
AU  - Noor S
AD  - International Islamic University, Islamabad 44000, Pakistan; Department of 
      Chemistry and Materials Science, Aalto University, Espoo 16100, Fl-00076, 
      Finland.
FAU - Sajjad, Shamaila
AU  - Sajjad S
AD  - International Islamic University, Islamabad 44000, Pakistan. Electronic address: 
      shalisajjad@yahoo.com.
FAU - Leghari, Sajjad Ahmed Khan
AU  - Leghari SAK
AD  - Pakistan Institute of Engineering and Applied Sciences, Islamabad 44000, 
      Pakistan.
FAU - Flox, Cristina
AU  - Flox C
AD  - Department of Chemistry and Materials Science, Aalto University, Espoo 16100, 
      Fl-00076, Finland.
FAU - Ahmad, Saeed
AU  - Ahmad S
AD  - Department of Applied Physics, Aalto University, Espoo 15100, Fl-00076, Finland.
LA  - eng
PT  - Journal Article
DEP - 20210302
PL  - Netherlands
TA  - J Environ Sci (China)
JT  - Journal of environmental sciences (China)
JID - 100967627
RN  - 059QF0KO0R (Water)
RN  - 15FIX9V2JP (titanium dioxide)
RN  - D1JT611TNE (Titanium)
RN  - N762921K75 (Nitrogen)
SB  - IM
MH  - Catalysis
MH  - Light
MH  - *Nitrogen
MH  - Titanium
MH  - *Water
OTO - NOTNLM
OT  - 2,4-Dichlorophenol
OT  - Bi(2)O(3) quantum dots
OT  - Nitrogen defects
OT  - Nitrogen doped graphene oxide
OT  - Water treatment
EDAT- 2021/09/02 06:00
MHDA- 2021/09/03 06:00
CRDT- 2021/09/01 05:50
PHST- 2020/09/29 00:00 [received]
PHST- 2021/02/07 00:00 [revised]
PHST- 2021/02/08 00:00 [accepted]
PHST- 2021/09/01 05:50 [entrez]
PHST- 2021/09/02 06:00 [pubmed]
PHST- 2021/09/03 06:00 [medline]
AID - S1001-0742(21)00054-1 [pii]
AID - 10.1016/j.jes.2021.02.009 [doi]
PST - ppublish
SO  - J Environ Sci (China). 2021 Oct;108:107-119. doi: 10.1016/j.jes.2021.02.009. Epub 
      2021 Mar 2.