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| Corn stalk-derived carbon/BiOBr composite: Synthesis and photocatalytic degradation performance for rhodamine B |
| Author Name | Affiliation | E-mail | | ZHANG Jin | School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China | jzmary@163.com | | WANG Yuting | School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China | | | YU Bin | School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China | | | ZHONG Yuxin | School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China | | | ZHANG Yufeng | School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China | |
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| Abstract: A flower-like BiOBr photocatalyst (CS/BiOBr) was prepared by using the carbon material derived from corn straw (CS) as the carrier. The prepared composites were characterized by X-ray diffraction (XRD), Fourier transform infrared (FIIR) spectra, scanning electron microscope (SEM), X-ray photoelectron spectra (XPS), and UV-Vis diffuse reflectance spectra (UV-Vis DRS). The SEM analyses indicate that the introduction of CS promotes the formation of a unique flower-like structure in BiOBr, which not only optimizes the efficiency of light capture but also increases the specific surface area of BiOBr. The bandgap of the composite was narrower compared with the pure BiOBr. The CS/BiOBr composites exhibited higher photocatalytic activity than pure CS and BiOBr under visible light irradiation, and a higher first-order reaction rate constant (k) of 0.043 7 min-1 than BiOBr (0.014 6 min-1), and exhibited excellent stability and reusability during the cyclic run. The enhanced photocatalytic activity is attributed to the efficient separation of photoinduced electrons and holes. Superoxide radicals and holes were the major active species. |
| Keywords: corn straws agricultural waste BiOBr photocatalysis rhodamine B |
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| ZHANG Jin,WANG Yuting,YU Bin,ZHONG Yuxin,ZHANG Yufeng.Corn stalk-derived carbon/BiOBr composite: Synthesis and photocatalytic degradation performance for rhodamine B[J].Chinese Journal of Inorganic Chemistry,2025,41(7):1397-1408. |
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