Decoration of Zinc Oxide Nanorods into the Surface of Activated Carbon Obtained from Agricultural Waste for Effective Removal of Methylene Blue Dye

Autor: Priyanka Shrestha, Manoj Kumar Jha, Jeevan Ghimire, Agni Raj Koirala, Rajeshwar Man Shrestha, Ram Kumar Sharma, Bishweshwar Pant, Mira Park, Hem Raj Pant
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Materials, Vol 13, Iss 24, p 5667 (2020)
Druh dokumentu: article
ISSN: 1996-1944
DOI: 10.3390/ma13245667
Popis: Zinc oxide (ZnO) nanorods incorporated activated carbon (AC) composite photocatalyst was synthesized using a hydrothermal process. The AC was prepared from lapsi (Choerospondias axillaris) seed stone, an agricultural waste product, found in Nepal by the chemical activation method. An aqueous suspension of AC with ZnO precursor was subjected to the hydrothermal treatment at 140 °C for 2 h to decorate ZnO rods into the surface of AC. As-obtained ZnO nanorods decorated activated carbon (ZnO/AC) photocatalyst was characterized by various techniques, such as scanning electron microscopy (SEM), X-ray diffraction (XRD), and photoluminescence (PL) spectroscopy. Results showed that highly crystalline hexagonal ZnO nanorods were effectively grown on the surface of porous AC. The photocatalytic property of the as-prepared ZnO/AC composite was studied by degrading methylene blue (MB) dye under UV-light irradiation. The ZnO/AC composite showed better photocatalytic property than that of the pristine ZnO nanorods. The enhanced photocatalytic performance in the case of the ZnO/AC composite is attributed to the combined effects of ZnO nanorods and AC.
Databáze: Directory of Open Access Journals
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