• YI FAN ZHENG

      Articles written in Bulletin of Materials Science

    • Synthesis and enhanced photocatalytic activity of g-C$_3$N$_4$ hybridized CdS nanoparticles

      QING YING LIU YI LING QI YI FAN ZHENG XU CHUN SONG

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      The highly effective g-C$_3$N$_4$ hybridized CdS photocatalysts were synthesized via a successive calcination andhydrothermal process. The as-prepared photocatalysts were characterized by X-ray powder diffraction, transmission electronmicroscopy and UV–Vis diffuse reflectance spectroscopy. The photocatalytic performance of the C$_3$N$_4$/CdS nanocomposites was evaluated by the photodegradation of RhB under visible light irradiation. The results showed that photocatalytic ability of the C$_3$N$_4$/CdS nanocomposites was higher than that of pure C$_3$N$_4$ and CdS. The enhanced photocatalytic activity could be attributed to the high separation efficiency of the photo-excited electron-hole pairs. A possible mechanism of the photocatalytic degradation of RhB on C$_3$N$_4$/CdS nanocomposites was also proposed.

    • Fe$_2$O$_3$/MWCNTs nanocomposite decorated glassy carbon electrode for the determination of nitrite

      XIU RU LIN YI FAN ZHENG XU CHUN SONG

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      A novel ferric oxide/multi-walled carbon nanotubes (Fe$_2$O$_3$/MWCNTs)-modified glassy carbon electrode (GCE)was prepared by drop casting Fe$_2$O$_3$/MWCNTs onto the surface of GCE. Scanning electron microscopy (SEM) image shows that the Fe2O3/MWCNTs has a nanostructure. Cyclic voltammetry (CV) results show that the Fe$_2$O$_3$/MWCNTsmodifiedGCE presents excellent electrochemical activity in the presence of 1 mM nitrite in a 0.1 M phosphate-buffered saline (PBS) to compare the Fe$_2$O$_3$ and MWCNTs-modified GCE. Differential pulse voltammetry (DPV) results also showthat the Fe$_2$O$_3$/MWCNTs has excellent electrocatalytic performance to nitrite in a pH 7.0 PBS. The amperometric response result shows that the Fe$_2$O$_3$/MWCNTs-modified GCE can be used to detect nitrite concentration in a wide linear range of 10–1000 $\mu$M with a detection limit of 0.1 $\mu$M.

    • Electrochemical sensor based on Na$^+$-doped g-C$_3$N$_4$ for detection of phenol

      HAO YONG YIN YI FAN ZHENG LING WANG

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      In this work, a novel and enhanced electrochemical sensor based on Na$^+$-doped g-C$_3$N$_4$ was constructed for the detection of phenol. First, the g-C$_3$N$_4$ was formed through polymerizing melamine under 520$^{\circ}$C. And then the Na$^+$-doped g-C$_3$N$_4$ was fabricated by a simple wet chemical method. The electrochemical sensor was constructed by modifying the carbon paper with the resulting Na$^+$-doped g-C$_3$N$_4$. The morphology, chemical compositions and structure of Na$^+$-dopedg-C$_3$N$_4$ were characterized by scanning electron microscopy, transmission electronic microscopy, energy-dispersive X-ray detector and X-ray diffraction. The Na$^+$-doped g-C$_3$N$_4$ electrode was used for the cyclic voltammetry and amperometric response detection of phenol in a 0.1 M phosphate buffer (pH 9.0). Under the optimal conditions, the prepared sensordisplayed good performance for the electrochemical detection of phenol with a wide linear range of 1–110 $\mu$M, as well as low detection limit of 0.23 $\mu$M.

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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