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Zhang L, Tian H, Zhang M, Wu L, Guo W, Fang F, Sun X, Zhong Z, Du L, Liu Z. Preparation and Properties of Bio-Based Polyurethane Controlled Release Urea Coating with Photosensitivity. ACS OMEGA 2022; 7:8558-8569. [PMID: 35309463 PMCID: PMC8928513 DOI: 10.1021/acsomega.1c06432] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/19/2022] [Indexed: 05/25/2023]
Abstract
In order to improve the photodegradation ability of fertilizer coating material and realize the sustainability of fertilizers, in this study, the commercially available photosensitive iron stearate (FeSt3) was wet-ground into submicrometer FeSt3 (SFeSt3) particles and used in preparation of a SFeSt3-modified bio-based polyurethane (PU)-coated controlled release urea (PU-SFe-CRU). The results showed that after 1 month photodegradation, the coating material had significant yellowing, the oxygen content of SFeSt3-modified PU (PU-SFe) increased by 56.89%, and its structure became more porous and looser than PU. The thermal stability of PU-SFe decreased, and more intermediate products were produced after exposure to UV light. The germination experiment showed that PU-SFe before and after photodegradation (up to 60 mg/L) had no adverse effect on the seed germination and bud growth of rice. Additionally, PU-SFe had a significantly higher Cr adsorption capacity after photodegradation due to the increase of the oxygen-containing group and specific surface. This study provides a theoretical basis for the research and development of photodegradable environment-friendly controlled release urea.
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Affiliation(s)
- Lina Zhang
- National
Engineering Research Center for Efficient Utilization of Soil and
Fertilizer Resources, College of Recourses and Environment, Shandong Agricultural University, Taian 271018, China
| | - Hongyu Tian
- National
Engineering Research Center for Efficient Utilization of Soil and
Fertilizer Resources, College of Recourses and Environment, Shandong Agricultural University, Taian 271018, China
| | - Min Zhang
- National
Engineering Research Center for Efficient Utilization of Soil and
Fertilizer Resources, College of Recourses and Environment, Shandong Agricultural University, Taian 271018, China
| | - Liang Wu
- Key
Laboratory of Crop Specific Fertilizer, Ministry of Agriculture and
Rural Affairs, Xinyangfeng Agricultural
Technology Co Ltd., Jingmen, Hubei 448001, China
| | - Wusong Guo
- Key
Laboratory of Crop Specific Fertilizer, Ministry of Agriculture and
Rural Affairs, Xinyangfeng Agricultural
Technology Co Ltd., Jingmen, Hubei 448001, China
| | - Fuli Fang
- Key
Laboratory of Crop Specific Fertilizer, Ministry of Agriculture and
Rural Affairs, Xinyangfeng Agricultural
Technology Co Ltd., Jingmen, Hubei 448001, China
| | - Xiao Sun
- National
Engineering Research Center for Efficient Utilization of Soil and
Fertilizer Resources, College of Recourses and Environment, Shandong Agricultural University, Taian 271018, China
| | - Zijing Zhong
- National
Engineering Research Center for Efficient Utilization of Soil and
Fertilizer Resources, College of Recourses and Environment, Shandong Agricultural University, Taian 271018, China
| | - Longxu Du
- National
Engineering Research Center for Efficient Utilization of Soil and
Fertilizer Resources, College of Recourses and Environment, Shandong Agricultural University, Taian 271018, China
| | - Zhiguang Liu
- National
Engineering Research Center for Efficient Utilization of Soil and
Fertilizer Resources, College of Recourses and Environment, Shandong Agricultural University, Taian 271018, China
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Rani M, Shanker U. Sunlight-induced photocatalytic degradation of organic pollutants by biosynthesized hetrometallic oxides nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:61760-61780. [PMID: 34189687 DOI: 10.1007/s11356-021-15003-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
Dyes and phenols are extensively used chemicals in petrochemicals, pharmaceuticals, textile, and paints industries. Due to high persistence, bioaccumulation, and toxicity, their removal from the environment is highly imperative by advanced techniques. Single metal oxide nanomaterials are generally associated with limitations of large bandgap (> 3eV) and charge recombination. Therefore, heterometallic oxides (HMOs) as CuFe2O4, CuMn2O4, and MnZn2O4 have been synthesized via green route by employing leaf extract of Azadirachta indica. XRD revealed the crystalline nature of HMOs nanospheres with particle size less than 100 nm. Subsequently, HMOs nanocatalysts were used as photocatalyst for removal of 3-amino phenols (3-AP) and eriochrome black T (EBT) from water under sunlight. Reaction parameters namely pollutant concentration (50-130 mgL-1), catalyst dose (20-100 mg), and pH (3-11) were optimized in order to get best results. Substantial degradation (80-95%) of pollutants (50 mgL-1) by HMOs (80 mg) was achieved at neutral pH under sunlight exposure. Highest removal by CuFe2O4 might be due to its high surface area (35.7 m2g-1), low band gap (2.4 eV), larger particle stability (Zeta potential: -22.0 mV), and lower photoluminescence intensity. Sharp declines in curves were visually confirmed by color change and indicated for first-order kinetics of degradation with initial Langmuir adsorption. Spectrophotometric analysis revealed that half-life (t1/2) of 3-AP (0.9-1.7 h) and EBT (0.6-0.8 h) were significantly reduced. Faster degradation of EBT than 3-AP was because of less electronegative N-atom at the diazo group. Scavenger analysis indicated the presence of active radicals in photo-catalytic degradation of 3-AP and EBT. All HMOs have shown high reusability (n=8) which ensures their stability, sustainability, and efficiency. Overall, green synthesized HMOs nanoparticles with prominent surface characteristics offer a viable alternative photocatalyst for industrial applications.
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Affiliation(s)
- Manviri Rani
- Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur, Rajasthan, 302017, India.
| | - Uma Shanker
- Department of Chemistry, Dr B R Ambedkar National Institute of Technology Jalandhar, Jalandhar, Punjab, 144011, India.
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Godard J, Aimeur M, Villandier N, Zermane F, Bregier F, Sol V, Baudu M. Photodegradation of tebuconazole mediated by a novel hybrid phenalenone based photosensitizer. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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