본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Journal of electroanalytical chemistry v.785, 2017년, pp.26 - 32   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Ultra-sensitive phenol sensor based on overcoming surface fouling of reduced graphene oxide-zinc oxide composite electrode

Sha, Rinky (Department of Electrical Engineering, Indian Institute of Technology, Hyderabad 502285, India ); Puttapati, Sampath Kumar (School of Engineering Sciences and Technology, University of Hyderabad, Gachibowli, Hyderabad 500046, India ); Srikanth, Vadali VSS (School of Engineering Sciences and Technology, University of Hyderabad, Gachibowli, Hyderabad 500046, India ); Badhulika, Sushmee (Department of Electrical Engineering, Indian Institute of Technology, Hyderabad 502285, India );
  • 초록  

    Abstract A major drawback of non-enzymatic approach for phenol detection is surface fouling which results from the electrochemical oxidation of phenol to polymeric products, thereby restraining the electrode process to low concentrations and limited to single time use. In this work, we report a novel approach for stable, non-enzymatic phenol detection using reduced Graphene Oxide (rGO)-Zinc Oxide (ZnO) composite modified Glassy Carbon Electrode (GCE) which eliminates the surface fouling effect by allowing precise selection of the sensing peak. Here, the rGO-ZnO composite was synthesized using a wet chemical method wherein rGO and ZnO were formed in-situ from GO and Zinc Acetate, respectively. The phenol sensing was investigated by differential pulse voltammetry (DPV) which yielded two peaks at 0.35V and 0.94V. Phenol detection was performed at a lower potential (0.35V) as it eliminates the need for surface renewal of the electrode prior to each scan caused due to surface fouling thus facilitating stable and reproducible detection. The as-fabricated sensor responded linearly to phenol over two ranges, one in the range 2–15μM with a ultrahigh sensitivity of 1.79μA/μMcm 2 and the other in the range 15–40μM with a sensitivity of 0.389μA/μMcm 2 with good reproducibility, stability, selectivity and a lower detection limit of 1.94μM. The sensing ability of rGO-ZnO modified GCE was studied in terms of forward biased nano Schottky barriers at the rGO-ZnO interface. This composite based sensor provides a low cost, non-enzymatic and voltammetric detection of phenol in industrial and environmental analyses.


  • 주제어

    Environmental sensors .   Non-enzymatic .   Phenol sensor .   Reduced graphene oxide .   ZnO.  

 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