PMID- 32157131
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240328
IS  - 2045-2322 (Electronic)
IS  - 2045-2322 (Linking)
VI  - 10
IP  - 1
DP  - 2020 Mar 10
TI  - Developing the Ternary ZnO Doped MoS(2) Nanostructures Grafted on CNT and Reduced 
      Graphene Oxide (RGO) for Photocatalytic Degradation of Aniline.
PG  - 4414
LID - 10.1038/s41598-020-61367-7 [doi]
LID - 4414
AB  - Transition metal sulfide semiconductors have achieved significant attention in 
      the field of photocatalysis and degradation of pollutants. MoS(2) with a two 
      dimensional (2D) layered structure, a narrow bandgap and the ability of getting 
      excited while being exposed to visible light, has demonstrated great potential in 
      visible-light-driven photocatalysts. However, it possesses fast-paced 
      recombination of charges. In this study, the coupled MoS(2) nanosheets were 
      synthesized with ZnO nanorods to develop the heterojunctions photocatalyst in 
      order to obtain superior photoactivity. The charge transfer in this composite is 
      not adequate to achieve desirable activity. Therefore, heterojunction was 
      modified by reduced graphene oxide (RGO) nanosheets and carbon nanotubes (CNTs) 
      to develop the RGO/ZnO/MoS(2) and CNTs/ZnO/MoS(2) ternary nanocomposites. The 
      structure, morphology, composition, optical and photocatalytic properties of the 
      as-fabricated samples were characterized through X-ray diffraction (XRD), Fourier 
      Transform Infrared (FTIR), Field Emission Scanning Electron Microscopy (FESEM), 
      Transmission Electron Microscopy (TEM), Energy-Dispersive X-ray (EDX), elemental 
      mapping, Photoluminescence (PL), Ultraviolet-Visible spectroscopy (UV-VIS), and 
      Brunauer-Emmett-Teller (BET) techniques. The photo-catalytic performance of all 
      samples was evaluated through photodegradation of aniline in aqueous solution. 
      The combination of RGO or CNTs into the ZnO/MoS(2) greatly promoted the catalytic 
      activity. However, the resulting RGO/ZnO/MoS(2) ternary nanocomposites showed 
      appreciably increased catalytic performance, faster than that of CNTs/ZnO/MoS(2). 
      Charge carrier transfer studies, the BET surface area analysis, and the optical 
      studies confirmed this superiority. The role of operational variables namely, 
      solution pH, catalyst dosage amount, and initial concentration of aniline was 
      then investigated for obtaining maximum degradation. Complete degradation was 
      observed, in the case of pH = 4, catalyst dosage of 0.7 g/L and aniline 
      concentration of 80 ppm, and light intensity of 100 W. According to the results 
      of trapping experiments, hydroxyl radical was found to be the main active species 
      in the photocatalytic reaction. Meanwhile, a plausible mechanism was proposed for 
      describing the degradation of aniline upon ternary composite. Moreover, the 
      catalyst showed excellent reusability and stability after five consecutive cycles 
      due to the synergistic effect between its components. Total-Organic-Carbon 
      concentration (TOC) results suggested that complete mineralization of aniline 
      occurred after 210 min of irradiation. Finally, a real petrochemical wastewater 
      sample was evaluated for testing the catalytic ability of the as-fabricated 
      composites in real case studies and it was observed that the process successfully 
      quenched 100% and 93% of Chemical Oxygen Demand (COD) and TOC in the wastewater, 
      respectively.
FAU - Ghasemipour, Parisa
AU  - Ghasemipour P
AD  - Chemical Engineering Department, Abadan Faculty of Petroleum Engineering, 
      Petroleum University of Technology, Abadan, Iran.
FAU - Fattahi, Moslem
AU  - Fattahi M
AD  - Chemical Engineering Department, Abadan Faculty of Petroleum Engineering, 
      Petroleum University of Technology, Abadan, Iran. fattahi@put.ac.ir.
FAU - Rasekh, Behnam
AU  - Rasekh B
AD  - Microbiology and Biotechnology Research Group, Research Institute of Petroleum 
      Industry, National Iranian Oil Company, Tehran, Iran.
FAU - Yazdian, Fatemeh
AU  - Yazdian F
AD  - Department of Life Science Engineering, Faculty of New Science and Technologies, 
      University of Tehran, Tehran, Iran.
LA  - eng
PT  - Journal Article
DEP - 20200310
PL  - England
TA  - Sci Rep
JT  - Scientific reports
JID - 101563288
SB  - IM
PMC - PMC7064525
COIS- The authors declare no competing interests.
EDAT- 2020/03/12 06:00
MHDA- 2020/03/12 06:01
PMCR- 2020/03/10
CRDT- 2020/03/12 06:00
PHST- 2019/07/07 00:00 [received]
PHST- 2020/02/26 00:00 [accepted]
PHST- 2020/03/12 06:00 [entrez]
PHST- 2020/03/12 06:00 [pubmed]
PHST- 2020/03/12 06:01 [medline]
PHST- 2020/03/10 00:00 [pmc-release]
AID - 10.1038/s41598-020-61367-7 [pii]
AID - 61367 [pii]
AID - 10.1038/s41598-020-61367-7 [doi]
PST - epublish
SO  - Sci Rep. 2020 Mar 10;10(1):4414. doi: 10.1038/s41598-020-61367-7.