TAILIEUCHUNG - Synthesis and characterization of GNPs/Ti-Fe binary oxide composite from ilminite of central Viet Nam using hydrothermal method

In the present study, GNPs/Ti-Fe binary oxide composites were synthesized from ilmenite of Central Viet Nam using hydrothermal method. The effect of amount of Fe on the morphology, structure and photocatalytic performance of prepared materials were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV–VIS Diffuse Reflectance spectrophotometer, Energy-dispersive X-ray spectroscopy and BET techniques. | Synthesis and characterization of GNPs/Ti-Fe binary oxide composite from ilminite of central Viet Nam using hydrothermal method Vietnam Journal of Science and Technology 56 (2A) (2018) 1-10 SYNTHESIS AND CHARACTERIZATION OF GNPs/Ti-Fe BINARY OXIDE COMPOSITE FROM ILMINITE OF CENTRAL VIET NAM USING HYDROTHERMAL METHOD Truong Ngoc Tuan1, *, Tran Van Chinh 1, Nguyen Hoang Tuan2, Nguyen Thi Hoai Phuong1 1 Institute of Chemistry and Materials, Academy of Military Science and Technology, 17 Hoang Sam, Ha Noi 2 Military Technical Academy, 236 Hoang Quoc Viet, Ha Noi * Email: ngoctuan109@ Received: 08 April 2018; Accepted for publication: 10 May 2018 ABSTRACT In the present study, GNPs/Ti-Fe binary oxide composites were synthesized from ilmenite of Central Viet Nam using hydrothermal method. The effect of amount of Fe on the morphology, structure and photocatalytic performance of prepared materials were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV–VIS Diffuse Reflectance spectrophotometer, Energy-dispersive X-ray spectroscopy and BET techniques. The results showed that Ti-Fe binary oxide nanoparticles distribute on GNP sheets, the BET surface area of as-prepared material was m²/g and the material exhibited efficient photocatalytic performance in visible light (energy band gap was eV). Keywords: graphene nanoplatelets (GNPs), GNP/Ti-Fe binary oxide composite, photocatalytic material, ilmenite. 1. INTRODUCTION The development of industries causes a high risk of environment pollution, especially heavy metal contaminant. Some heavy metals as cadmium, chromium, lead, etc are considered carcinogens which can penetrate into water resources, soil, air and biosphere, and destroy habitat and indirectly effect human health. There are several ways for heavy metal removal, including electrochemical treatments (electrocoagulation, .

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