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Ali S, Bukhari DA, Rehman A. Call for biotechnological approach to degrade plastic in the era of COVID-19 pandemic. Saudi J Biol Sci 2023; 30:103583. [PMID: 36748033 PMCID: PMC9893805 DOI: 10.1016/j.sjbs.2023.103583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/09/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
Plastic pollution is a global issue and has become a major concern since Coronavirus disease (COVID)-19. In developing nations, landfilling and illegal waste disposal are typical ways to dispose of COVID-19-infected material. These technologies worsen plastic pollution and other human and animal health problems. Plastic degrades in light and heat, generating hazardous primary and secondary micro-plastic. Certain bacteria can degrade artificial polymers using genes, enzymes, and metabolic pathways. Microorganisms including bacteria degrade petrochemical plastics slowly. High molecular weight, strong chemical bonds, and excessive hydrophobicity reduce plastic biodegradation. There is not enough study on genes, enzymes, and bacteria-plastic interactions. Synthetic biology, metabolic engineering, and bioinformatics methods have been created to biodegrade synthetic polymers. This review will focus on how microorganisms' degrading capacity can be increased using recent biotechnological techniques.
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Key Words
- BHET, bis(2-hydroxyethyl
- Bacteria
- COVID-19
- COVID-19, Coronavirus disease-19
- FTIR, Fourier-transform infrared
- HDPE, High-density polyethene
- LDPE, Low-density polyethene
- MHET, Mono(2-hydroxyethyl
- MP, Microplastics
- Microorganisms
- NP, Nanoplastics
- PE, Polyethene
- PES, Polyethylene succinate
- PET, Polyethylene terephthalate
- PP, Polypropylene
- PPE, Personal protective equipment
- PS, Polystyrene
- PVC, Polyvinyl chloride
- Plastic degradation
- Plastic pollution
- TCA, Tricarboxylic acid
- TPA, Terephthalic acid
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Affiliation(s)
- Shakir Ali
- Department of Zoology, Government College University, Lahore, Pakistan
| | - Dilara A. Bukhari
- Department of Zoology, Government College University, Lahore, Pakistan
| | - Abdul Rehman
- Institute of Microbiology and Molecular Genetics, University of the Punjab, New Campus, Lahore 54590, Pakistan,Correspondence author at: Institute of Microbiology & Molecular Genetics, University of the Punjab, New Campus, Lahore 54590, Pakistan
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Feng J, Wang Y, Qin X, Lv Y, Huang Y, Yang Q, Li G, Kong M. Revealing Molecular Mechanisms of Colorless Transparent Polyimide Films under Photo-Oxidation. Polym Degrad Stab 2023. [DOI: 10.1016/j.polymdegradstab.2023.110294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Wei XY, He ZB, Yuan SQ, Wu H, Zhi XX, Zhang Y, Chen SJ, Liu JG. Enhancement of Ultraviolet Light Resistance of Colorless and Transparent Semi-Alicyclic Polyimide Nanocomposite Films via the Incorporation of Hindered Amine Light Stabilizers for Potential Applications in Flexible Optoelectronics. Polymers (Basel) 2022; 14:polym14061091. [PMID: 35335422 PMCID: PMC8949897 DOI: 10.3390/polym14061091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/07/2022] [Accepted: 03/07/2022] [Indexed: 11/16/2022] Open
Abstract
Optically transparent polymer films with excellent thermal and ultraviolet (UV) resistance have been highly desired in advanced optoelectronic fields, such as flexible substrates for photovoltaic devices. Colorless and transparent polyimide (CPI) films simultaneously possess the good thermal stability and optical transparency. However, conventional CPI films usually suffered from the UV exposure and have to face the deterioration of optical properties during the long-term service in UV environments. In the current work, the commercially available hindered amine light stabilizers (HALS) were tried to be incorporated into the semi-alicyclic CPI matrix with the aim of enhancing the UV exposure stability. For this target, a CPI-0 film was first prepared from hydrogenated pyromellitic dianhydride (HPMDA) and 2,2'-dimethylbenzidine (DMBZ) via a one-step polycondensation procedure. Then, the commercially available HALS were incorporated into the CPI-0 (HPMDA-DMBZ) film matrix to afford four series of CPI/HALS composite films. Experimental results indicated that the Tinuvin® 791 HALS showed the best miscibility with the CPI-0 film matrix and the derived CPI-D series of composite films exhibited the best optical transmittances. The CPI-D nanocomposite films showed apparently enhanced UV exposure stability via incorporation of the 791 additives. For the pristine CPI-0 film, after the UV exposure for 6 h, the optical properties, including the transmittance at the wavelength of 350 nm (T350), lightness (L*), yellow indices (b*), and haze obviously deteriorated with the T350 values from 55.7% to 17.5%, the L* values from 95.12 to 91.38, the b* values from 3.38 to 21.95, and the haze values from 1.46% to 9.33%. However, for the CPI-D-10 film (791: CPI-0 = 1.0 wt%, weight percent), the optical parameters were highly maintained with the T350 values from 61.4% to 53.8%, the L* values from 95.46 to 95.36, the b* values from 1.84 to 1.51, and the haze values from 0.69% to 3.34% under the same UV aging conditions.
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Affiliation(s)
- Xin-Ying Wei
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (X.-Y.W.); (H.W.); (X.-X.Z.); (Y.Z.)
| | - Zhi-Bin He
- RAYITEK Hi-Tech Film Co., Ltd., Shenzhen 518105, China; (Z.-B.H.); (S.-Q.Y.)
| | - Shun-Qi Yuan
- RAYITEK Hi-Tech Film Co., Ltd., Shenzhen 518105, China; (Z.-B.H.); (S.-Q.Y.)
| | - Hao Wu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (X.-Y.W.); (H.W.); (X.-X.Z.); (Y.Z.)
| | - Xin-Xin Zhi
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (X.-Y.W.); (H.W.); (X.-X.Z.); (Y.Z.)
| | - Yan Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (X.-Y.W.); (H.W.); (X.-X.Z.); (Y.Z.)
| | - Shu-Jing Chen
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (X.-Y.W.); (H.W.); (X.-X.Z.); (Y.Z.)
- Correspondence: (S.-J.C.); (J.-G.L.); Tel.: +86-10-8232-2972 (J.-G.L.)
| | - Jin-Gang Liu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (X.-Y.W.); (H.W.); (X.-X.Z.); (Y.Z.)
- Correspondence: (S.-J.C.); (J.-G.L.); Tel.: +86-10-8232-2972 (J.-G.L.)
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Feng J, Wang Y, Qin X, Lv Y, Huang Y, Yang Q, Li G, Kong M. Property Evolution and Molecular mechanisms of Aluminized Colorless Transparent Polyimide under Space Ultraviolet Irradiation. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.109915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Wu L, Wang HL, An YC, Jia YJ, Tan YY, Wei XY, Zhi XX, Zhang Y, Liu JG. Preparation and properties of light-colored and transparent semi-alicyclic polyimide films with enhanced flame retardancy from alicyclic dianhydrides and aromatic diamine containing phenolphthalein unit. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02676-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bismuth-Graphene Nanohybrids: Synthesis, Reaction Mechanisms, and Photocatalytic Applications—A Review. ENERGIES 2021. [DOI: 10.3390/en14082281] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Photocatalysis is a classical solution to energy conversion and environmental pollution control problems. In photocatalysis, the development and exploration of new visible light catalysts and their synthesis and modification strategies are crucial. It is also essential to understand the mechanism of these reactions in the various reaction media. Recently, bismuth and graphene’s unique geometrical and electronic properties have attracted considerable attention in photocatalysis. This review summarizes bismuth-graphene nanohybrids’ synthetic processes with various design considerations, fundamental mechanisms of action, heterogeneous photocatalysis, benefits, and challenges. Some key applications in energy conversion and environmental pollution control are discussed, such as CO2 reduction, water splitting, pollutant degradation, disinfection, and organic transformations. The detailed perspective of bismuth-graphene nanohybrids’ applications in various research fields presented herein should be of equal interest to academic and industrial scientists.
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