본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Journal of colloid and interface science v.512, 2018년, pp.172 - 189   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Catalytic decomposition of 2-chlorophenol using an ultrasonic-assisted Fe3O4–TiO2@MWCNT system: Influence factors, pathway and mechanism study

Dobaradaran, Sina (The Persian Gulf Marine Biotechnology Research Center, Bushehr University of Medical Sciences, Bushehr, Iran ) ; Nodehi, Ramin Nabizadeh (Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran ) ; Yaghmaeian, Kamyar (Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran ) ; Jaafari, Jalil (School of Health, Guilan University of Medical Sciences, Rasht, Iran ) ; Niari, Maryam Hazrati (Department of Environmental Health Engineering, School of Public Health, Jundishapur University of Medical Sciences, Ahvaz, Iran ) ; Bharti, Arvind Kumar (Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa ) ; Agarwal, Shilpi (Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa ) ; Gupta, Vinod Kumar (Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa ) ; Azari, Ali (Department of Environmental Health Engineering, School of Public Health, Kashan University of Medical Sciences, Kashan, Iran ) ; Shariatifar, Nabi (Department of Environmental Health E ) ;
  • 초록  

    Abstract As a reusable sonocatalyst, magnetically separable Fe 3 O 4 –TiO 2 @MWCNT (FMT) was synthesized by an ultrasound-assisted wet impregnation method and was evaluated in the removal of 2-chlorophenol (2CP). Physical and chemical properties of the catalyst composite materials were investigated by all catalysts were systematically characterized using Transmission Electron Microscopy (TEM), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), X-ray Photoelectron Spectroscopy (XPS), Energy Dispersive X-ray Analysis (EDX), Dynamic light scattering (DLS), and N 2 -physisorption. The efficiency and kinetics of 2CP removal by FMT-assisted sonocatalysis (FMT-US) was systematically investigated under various operational parameters i.e. pH, FMT and 2CP concentration, temperature and ultrasonic power. The results indicated that 0.4gL −1 FMT dosage, pH 5, temperature of 35°C as well as 50 w ultrasound power are the most favorable conditions for the degradation of the 2CP. Furthermore, both of the superoxide and hydroxyl radicals were produced in the reaction, however, superoxide radicals were assumed to be the dominating reactive species for the 2CP degradation, according to the scavenging tests and electron paramagnetic resonance tests. Moreover, the FMT catalyst exhibited a high reusability and stability in the US/FMT system during the five repetitive experiments. The intermediate products were identified by GC–MS, thereby a possible degradation pathway is proposed. The chemical oxygen demand (COD) and corresponding total organic carbon (TOC) removal efficiencies were 64.9% and 56.7%, respectively. Finally, toxicity tests showed that the toxicity of the solution increased during the first 5min and then decreased significantly with the progress of the oxidation. The mechanisms of ultrasound irritation enhanced FMT activation were also proposed. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Fe3O4–TiO2@MWCNT nanocomposite .   Heterogeneous catalysis .   2-clorophenol .   Ultrasonic irradiation.  

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
  • 원문이 없습니다.
유료다운로드

유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.

NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

이 논문과 함께 출판된 논문 + 더보기