본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Ceramics international v.43 no.6, 2017년, pp.5292 - 5301   SCI SCIE SCOPUS
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Synthesis of heterostructured Bi2O3–CeO2–ZnO photocatalyst with enhanced sunlight photocatalytic activity

Hezam, Abdo (Centre for Materials Science and Technology, University of Mysore, Vijnana Bhavan, P.B.No.21, Manasagangothri, Mysuru 570006, India ) ; Namratha, K. (Centre for Materials Science and Technology, University of Mysore, Vijnana Bhavan, P.B.No.21, Manasagangothri, Mysuru 570006, India ) ; Drmosh, Q.A. (Center of Research Excellence in Nanotechnology and Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia ) ; Yamani, Z.H. (Center of Research Excellence in Nanotechnology and Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia ) ; Byrappa, K. (Centre for Materials Science and Technology, University of Mysore, Vijnana Bhavan, P.B.No.21, Manasagangothri, Mysuru 570006, India ) ;
  • 초록  

    Abstract The development of heterostructured semiconductor photocatalysts makes a noteworthy advancement in environmental purification technology. In this work, a novel heterostructured Bi 2 O 3 −CeO 2 −ZnO, fabricated by a combination of microwave-assisted hydrothermal and thermal decomposition methods, showed an enhanced photocatalytic activity for Rhodamine B (RhB) degradation under sunlight, as compared to pristine ZnO, Bi 2 O 3 , CeO 2 , and commercial Degussa TiO 2 -P25. The obtained products were thoroughly characterized by various techniques including X- ray powder diffraction (PXRD), field emission scanning electron microscopy (FE-SEM), elemental color mapping, energy-dispersive X-ray spectroscopy (EDAX), Raman spectrometry, Fourier transform infrared (FT-IR) spectroscopy, UV–visible diffuse reflectance spectroscopy (UV–vis DRS), and photoluminescence (PL) spectroscopy. PXRD analysis reveals that the heterostructure has the monoclinic lattice phase of α-Bi 2 O 3 , the cubic phase of CeO 2 and the hexagonal wurtzite phase of ZnO. FE-SEM images show that Bi 2 O 3 −CeO 2 −ZnO has an ordered mixture of nanorod and nanochain structures. EDAX, elemental color mapping, Raman and FT-IR analyses confirm the successful formation of the heterostructured Bi 2 O 3 −CeO 2 −ZnO. The UV–Vis DRS results demonstrate that Bi 2 O 3 −CeO 2 −ZnO exhibits wide visible-light photoabsorption in 400–780nm range. Moreover, the reduction in PL intensity of the heterostructured Bi 2 O 3 −CeO 2 −ZnO, when compared to the pristine Bi 2 O 3 , CeO 2 , and ZnO, indicates enhanced charge separation. The study on the mechanism displayed that the improved photocatalytic activity of Bi 2 O 3 −CeO 2 −ZnO could be attributed to (1) the efficient separation of photoinduced electrons and holes of the photocatalysts, caused by the vectorial transfer of electrons and holes among ZnO, CeO 2 and Bi 2 O 3 , and (2) the wide visible-light photoabsorption range. This study introduces a new class of promising sunlight-driven photocatalysts. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Photocatalysis .   B.   Nanocomposites .   D.   Bi2O3−CeO2−ZnO .   C.   Optical properties.  

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
  • 원문이 없습니다.

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