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  • Open Access


    Tunable Luminescence Properties and Elucidating the Electronic Structures of Single-Phase Spherical BaWO4: Dy3+, Tm3+, Eu3+ Phosphors for Warm-White-Lighting

    Zun Bi1,2,3, Ke Jia1,2,3, Yunfei Liu1,2,3,*, Yinong Lyu1,2,3,*

    Journal of Renewable Materials, Vol.10, No.2, pp. 431-451, 2022, DOI:10.32604/jrm.2022.016735

    Abstract A series of uniform single-phase spherical BaWO4: Dy3+, Tm3+, Eu3+ phosphors were prepared via a microwave hydrothermal method by using trisodium citrate dehydrate as surfactant. The phase structure, morphology and photoluminescence properties were measured by powder X-ray diffraction, scanning electron microscope and fluorescence spectrometer, respectively. The results show that uniform spherical microcrystals with diameters in the range of 2–4 μm are obtained. And the phase and morphology of samples are not significantly changed by doping rare earth (RE3+) ions. Under the excitation wavelength of 356 and 365 nm, the samples BaWO4: 0.03Dy3+, yTm3+ can emit cold white light. In order to… More >

  • Open Access


    Experimental Investigation on Hydrophobic Behavior of Carbon Spheres Coated Surface Made from Microplastics

    Peng Liu, Bin Bai, Cui Wang, Yunan Chen, Zhiwei Ge, Wenwen Wei, Hui Jin*

    Journal of Renewable Materials, Vol.9, No.12, pp. 2159-2174, 2021, DOI:10.32604/jrm.2021.016166

    Abstract In this paper, a simple method to plate a hydrophobic coating on the inner surface of a small-scaled tube was proposed, where the coating consisted of carbon microspheres. Three common plastics polystyrene, polycarbonate and polyethylene were used as the feedstocks to be processed in supercritical water in a quartz tubular reactor. After reaction, the contact angle of droplet on the inner surface of the quartz tube was turned out to be over 100°, significantly larger than that of the blank tube 54°. When processing polystyrene in the 750C supercritical water for 10 min, the largest contact angle was obtained, up… More > Graphic Abstract

    Experimental Investigation on Hydrophobic Behavior of Carbon Spheres Coated Surface Made from Microplastics

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