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Zhang Y, Zhang D, He Y, Wang Z, Song P, Wang R. Construction of hexagonal spindle-shaped Fe-MOFs induced by cationic copolymer and its application for effective wastewater treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:80279-80292. [PMID: 37296248 DOI: 10.1007/s11356-023-28121-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023]
Abstract
The environment and human health are in danger due to the long-term enrichment and buildup of organic pesticides, dyes, and harmful microbes in wastewater. The development of functional materials that are efficient for treating wastewater remains a significant problem. Eco-friendly hexagonal spindle-shaped Fe-MOFs (Hs-FeMOFs) were created in this study under the influence of cationic copolymer (PMSt). The mechanism of crystal growth and development of its unique morphology were described after looking into impact factors for the ideal circumstances and being characterized by XRD, TEM, XPS, and other techniques. It revealed that Hs-FeMOFs possess an enormous supply of adsorption active sites, a strong electropositivity, and the nanometer tip. Then, typical organic pollutants, such as herbicides and mixed dyes, as well as biological pollutants bacteria, were chosen to assess its efficacy in wastewater treatment. It was discovered that the pendimethalin could be quickly removed in wastewater and the removal rate reached 100% within 10 min. In separation of mixed dyes, the retention rate of malachite green (MG) reached 92.3% in 5 min and with a minimum inhibitory concentration of 0.8 mg/mL and demonstrated strong activity due to the presence of cationic copolymers. In actual water matrix, Hs-FeMOF could also play excellent adsorption and antibacterial activity. In summary, a novel, environmentally friendly MOF material with good activity was successfully created by cationic copolymer induction. It offers a fresh approach to develop functional materials in wastewater treatment.
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Affiliation(s)
- Yaping Zhang
- Key Lab. Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Duoxin Zhang
- Key Lab. Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Yufeng He
- Key Lab. Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Zeyuan Wang
- School of Pharmacy, Temple University, Philadelphia, PA, 19140, USA
| | - Pengfei Song
- Key Lab. Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Rongmin Wang
- Key Lab. Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
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Zhang Y, Cao P, Zhu X, Li B, He Y, Song P, Wang R. Facile construction of BiOBr ultra-thin nano-roundels for dramatically enhancing photocatalytic activity. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 299:113636. [PMID: 34467862 DOI: 10.1016/j.jenvman.2021.113636] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/01/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
BiOBr is a kind of promising photocatalyst because of excellent photoelectric separation efficiency and chemical stability. In order to improving practical application performance, a novel BiOBr ultra-thin nano-roundel (BiOBr-nR) was constructed in water-in-oil (WIO) emulsion microspheres, and prepared by hydrothermal reaction. Its specific surface area was increased by changing microtopography and downsizing. After being characterized by FT-IR, X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), scanning electron microscope (SEM), Brunauer-Emmett-Teller (BET), UV-Vis diffuse reflectance spectra (UV-Vis DRS) and photoluminescence (PL), it indicated the BiOBr-nR, being doped by C and N, is 4-5 times smaller and thinner than that of conventional BiOBr. It was also found that BiOBr-nR has narrower band gap energy (2.78 eV), excellent photocatalytic activity, significant reusability, and stability. The obtained BiOBr-nR photocatalysts were applied to remove organics. It presented excellent photocatalytic activity, the degradation rate of organics got to 99.2%. The mechanism of photodegradation was investigated, which indicated superoxide radicals and holes play a major role in the degradation of organics. Therefore, BiOBr-nR is a kind of environmentally friendly photocatalyst with stable photocatalytic activity, the removal rate still more than 97% after recycling for 10 times. In summary, we found a novel insight for designing and preparation of efficient and recyclable BiOBr photocatalytic materials, which exhibits high photoresponse for purifying the wastewater.
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Affiliation(s)
- Yaping Zhang
- Key Lab. Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Peiyu Cao
- Key Lab. Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Xinhua Zhu
- Key Lab. Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Bozhen Li
- Key Lab. Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Yufeng He
- Key Lab. Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Pengfei Song
- Key Lab. Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Rongmin Wang
- Key Lab. Eco-functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
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