4.7 Article

Photocatalytic degradation of ethylene in cold storage using the nanocomposite photocatalyst MIL101(Fe)-TiO2-rGO

期刊

CHEMICAL ENGINEERING JOURNAL
卷 424, 期 -, 页码 -

出版社

ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.130407

关键词

MIL101(Fe); TiO2; Reduced graphene oxide; Ethylene degradation; Co-60-gamma rays

资金

  1. National Natural Science Foundation of China [31171449]
  2. Science and Technology Projects of Guangdong, China [2017B020237002]

向作者/读者索取更多资源

MTR, a novel nano-composite photocatalyst synthesized for ethylene degradation, showed small band gaps, good conductivity, improved charge transfer, and stable photocatalytic activity. It has the potential to maintain the quality of harvested fruits and vegetables effectively.
To maintain the quality of harvested fruits and vegetables in a closed refrigerated environment, a novel nano-composite photocatalyst MIL101(Fe)-TiO2-rGO (MTR) for ethylene degradation was synthesized. The characterization of MTR was analyzed by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS) and High-resolution transmission electron microscope (HRTEM). Moreover, with the good conductivity of rGO, MTR had the smallest band gaps according to ultraviolet-visible solid diffuse reflection (UV-Vis DRS) analysis; this small band gap size improved the utilization of light. According to the results of the photoluminescence spectra and electrochemical impedance spectra, the charge transfer resistance and transient photocurrent of MTR were improved. The redox process of Ti4+/Ti3+ from TiO2 and Fe3+/Fe2+ from MIL101(Fe) efficiently prevented the recombination of e(-)-h(+) pairs. In this cycle, oxidative active substances (O-center dot(2)-) were provided, which played a key role in the ethylene degradation of MTR. Additionally, MTR has excellent gas adsorption capacity, and the photocatalytic degradation rate of C2H4 by MTR was 2.07 x 10(-4) min(-1), which is better than that of other photocatalysts. Furthermore, the photocatalytic activity of MTR was still stable after 4 times of recycling, indicating the potential to maintain the quality of horticultural products after harvesting.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据