1
|
Zhu L, Feng C, Peng B, Hui X, Bai X, Yu Z. Performance Research of Natural Mica Modified with Zirconium-Based Metal-Organic Frameworks for an Epoxy Resin Anti-Corrosion Coating. Molecules 2023; 28:7106. [PMID: 37894585 PMCID: PMC10609246 DOI: 10.3390/molecules28207106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 10/29/2023] Open
Abstract
A new composite material made from mica and a metal-organic framework (MOF) has been developed to improve the anticorrosive capabilities of epoxy resin coatings. The layered mica was loaded with denser and more uniform UIO-66 nanoparticles after modifying the composite with polyethyleneimine (PEI). The composites were used as fillers to prepare epoxy coatings that exhibited long-lasting active (labyrinth effect produced by mica) and passive (pH-sensitive release of corrosion inhibitors) corrosion protection. Settling experiments showed that polyethyleneimine improved the composites' compatibility in epoxy resin. After being immersed in a 3.5 wt.% NaCl solution for 60 days, the adhesion of PMC-UIO@MBT/EP increases to 9.01 MPa, while the water absorption rate only reaches 2.57%. It indicates that the coating has good barrier properties and stability. After being soaked in a 3.5 wt.% NaCl solution for 60 days at pH = 7, PMC-UIO@MBT/EP exhibits high low-frequency impedance (8.30 × 108 Ω), as demonstrated by the electronic impedance spectrum (EIS). In addition, the coating also exhibited the highest low-frequency impedance after 30 days in 3.5 wt.% NaCl solution at pH = 11.
Collapse
Affiliation(s)
- Lijuan Zhu
- Tubular Goods Research Institute, China National Petroleum Corporation, Xi’an 710077, China
- State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Xi’an 710077, China
- Key Laboratory of Petroleum Tubular Goods and Equipment Quality Safety for State Market Regulation, Xi’an 710077, China
| | - Chun Feng
- Tubular Goods Research Institute, China National Petroleum Corporation, Xi’an 710077, China
- State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Xi’an 710077, China
- Key Laboratory of Petroleum Tubular Goods and Equipment Quality Safety for State Market Regulation, Xi’an 710077, China
| | - Bokai Peng
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Xuezhi Hui
- Key Laboratory of Petroleum Tubular Goods and Equipment Quality Safety for State Market Regulation, Xi’an 710077, China
- Petrochina Changqing Oilfield Company, China National Petroleum Corporation, Xi’an 710021, China
| | - Xiaofeng Bai
- Tubular Goods Research Institute, China National Petroleum Corporation, Xi’an 710077, China
- State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Xi’an 710077, China
- Key Laboratory of Petroleum Tubular Goods and Equipment Quality Safety for State Market Regulation, Xi’an 710077, China
| | - Zongxue Yu
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
| |
Collapse
|
2
|
Li C, Shi Z, Cai J, Wang P, Wang F, Ju M, Liu J, Yu Q. Synthesis of Phenylboronic Acid-Functionalized Magnetic Nanoparticles for Sensitive Soil Enzyme Assays. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27206883. [PMID: 36296473 PMCID: PMC9611590 DOI: 10.3390/molecules27206883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/28/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022]
Abstract
Soil enzymes, such as invertase, urease, acidic phosphatase and catalase, play critical roles in soil biochemical reactions and are involved in soil fertility. However, it remains a great challenge to efficiently concentrate soil enzymes and sensitively assess enzyme activity. In this study, we synthesized phenylboronic acid-functionalized magnetic nanoparticles to rapidly capture soil enzymes for sensitive soil enzyme assays. The iron oxide magnetic nanoparticles (MNPs) were firstly prepared by the co-precipitation method and then functionalized by (3-aminopropyl)triethoxysilane, polyethyleneimine and phenylboric acid in turn, obtaining the final nanoparticles (MNPPBA). Protein-capturing assays showed that the functionalized MNPs had a much higher protein-capturing capacity than the naked MNPs (56% versus 6%). Moreover, MNPPBA almost thoroughly captured the tested enzymes, i.e., urease, invertase, and alkaline phosphatase, from enzyme solutions. Based on MNPPBA, a soil enzyme assay method was developed by integration of enzyme capture, magnetic separation and trace enzyme analysis. The method was successfully applied in determining trace enzyme activity in rhizosphere soil. This study provides a strategy to sensitively determine soil enzyme activity for mechanistic investigation of soil fertility and plant–microbiome interaction.
Collapse
Affiliation(s)
- Can Li
- National & Local Joint Engineering Research Center on Biomass Resource Utilization, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Zhishang Shi
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Jinxing Cai
- National & Local Joint Engineering Research Center on Biomass Resource Utilization, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Ping Wang
- National & Local Joint Engineering Research Center on Biomass Resource Utilization, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Fang Wang
- Institute of Agricultural Resources and Environment, Ningxia Academy of Agro-Forestry Science, Yinchuan 750002, China
| | - Meiting Ju
- National & Local Joint Engineering Research Center on Biomass Resource Utilization, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Jinpeng Liu
- National & Local Joint Engineering Research Center on Biomass Resource Utilization, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
- Correspondence: ; Tel.: +86-13752433799
| | - Qilin Yu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin 300071, China
| |
Collapse
|