SYNTHESIS AND CATALYTIC ACTIVITY OF COMPOSITE CuO/ZnO/C BASED ON ZIF-7 DODING Cu(II)

Hoang Van Duc * , Nguyen Ho Ngoc Thu , Nguyen Thi Anh Thu , Nguyen Le My Linh , Nguyen Dinh Luyen , Ha Thuy Trang and Pham Yen Khang

* Corresponding author: (hoangvanduc@dhsphue.edu.vn)

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Received: Apr 27, 2022
Revised: Aug 8, 2022
Accepted: Aug 29, 2022
Published: Apr 20, 2022
Title: SYNTHESIS AND CATALYTIC ACTIVITY OF COMPOSITE CuO/ZnO/C BASED ON ZIF-7 DODING Cu(II)
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How to Cite
Đức, H. V., Thư, N. H. N., Thư, N. T. A., Linh, N. L. M., Luyện, N. Đ., Trang, H. T., & Khang, P. Y. (2022). SYNTHESIS AND CATALYTIC ACTIVITY OF COMPOSITE CuO/ZnO/C BASED ON ZIF-7 DODING Cu(II). Journal of Science and Education, 63(03). Retrieved from https://tckhgd.dhsphue.edu.vn/index.php/jse/article/view/339
Issue
Vol. 63 No. 03 (2022): Journal of Science: Natural Science Issue
Section
Journal of Science and Education: Natural Science - Technology

Abstract

In this paper, CuO/ZnO/C composite was synthesized by the pyrolysis method based on ZIF-7 material doping Cu(II). The effect of annealing temperature on the phase composition of the composite was also investigated. The structure and property of the synthesized materials were characterized by the X-ray diffraction (XRD) and X-ray energy dispersion spectroscopy (EDX) methods. The results showed that the calcination temperature affects the phase composition of the composites. 500 °C is the optimal temperature for the synthesis of CuO/ZnO/C composite. Part of CuO in the composite will convert to Cu2O and Cu at higher calcination temperatures. The adsorption and photocatalytic capabilities of the CuO/ZnO/C composite were also evaluated. Experimental results show that composite materials improved rhodamine B adsorption activity compared to ZIF-7 (more than two times). Besides, CuO/ZnO/C materials also exhibited photocatalytic activity of rhodamine B degradation under visible light.
Keywords: CuO/ZnO/C, ZIF-7, adsorption, photocatalytic activity, rhodamine B

Tóm tắt

Trong bài báo này, composite CuO/ZnO/C được tổng hợp bằng phương pháp nhiệt phân trên cơ sở vật liệu ZIF-7 doping Cu(II). Ảnh hưởng của nhiệt độ nung đến thành phần pha của composite cũng đã được khảo sát. Vật liệu tổng hợp được đặc trưng cấu trúc và tính chất bằng các phương pháp: nhiễu xạ tia X (XRD) và phổ tán sắc năng lượng tia X (EDX). Kết quả cho thấy nhiệt độ nung ảnh hưởng đến thành phần pha của vật liệu tổng hợp. Composite CuO/ZnO/C hình thành tối ưu ở 500 °C. Ở nhiệt độ nung cao hơn, một phần CuO sẽ chuyển thành Cu2O và Cu. Khả năng hấp phụ và quang xúc tác của composite CuO/ZnO/C tổng hợp cũng được đánh giá. Kết quả thực nghiệm cho thấy vật liệu composite cải thiện hoạt tính hấp phụ rhodamine B so với ZIF-7 (tăng hơn 2 lần). Bên cạnh đó, vật liệu CuO/ZnO/C cũng thể hiện được hoạt tính quang xúc tác phân huỷ rhodamine B dưới tác dụng của ánh sáng nhìn thấy.
Từ khóa: CuO/ZnO/C, ZIF-7, hấp phụ, , quang xúc tác, rhodamine B

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