Polyethylene terephthalate (PET) recycling: A review

Case Studies in Chemical and Environmental Engineering, Journal Year: 2024, Volume and Issue: 9, P. 100673 - 100673

Published: Feb. 23, 2024

It is difficult to reuse wastes from polymers due the mismatch between amount of contaminants and secondary quality feed. This type operation much more expensive cost-effective than production polymer raw materials latest materials. However, recyclable beneficial if used extensively in various concrete products wood-polymer boards. done only cleaning sorting are not particularly important for products. Polyethylene terephthalate (PET) a widely industries its excellent physical chemical properties. Besides, increasing use PET has led global crisis waste management, as improper disposal caused significant environmental damage. major source accumulated landfills, address this issue, recycling methods have evolved. In regard, present review examines techniques involved PET. Conventional influence diverse depolymerization reaction variables were discussed, upsides downsides each technique considered. The summarizes advances technologies plastic waste, focusing on bio-recycling PET, aiming sustainable, economical solutions circular economy.

Language: Английский

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Nano titanium oxide (nano-TiO2): A review of synthesis methods, properties, and applications

Case Studies in Chemical and Environmental Engineering, Journal Year: 2024, Volume and Issue: 9, P. 100626 - 100626

Published: Jan. 24, 2024

Nanoparticles have revolutioned materials secience and manufacturing industry thanks to their ultrafine scale. Nano-scale titanium oxide (nano-TiO2) are key elements of a wide variety sectors advanced materials, devices, systems in view versatility extraordinary characetristics, mainly optical, electrical catalytic properties. Thnaks aforementioned features, they found position different industries such as colors pigments, photocatalysts, photovoltaic solar cells, adsorbents, cosmetics, electric electronic devices. Nano-SiO2 application gives rise range properties performance, which severely depends on particle size, size distribution, agglomeration the bulk host or systems. When used surface coating additive even functionalized, nano- TiO2 takes more roles, state-of-the-art depending synthesis method. Therefore, review synthesis, properties, surface- bulk-functionalization/modification (respectively with function groups doping) methods achieving high-performance seems essential. In this review, background information developments from pure Titanium Oxide chemically modified -based photocatalysts were discussed detail, Photocatalytic activity oxide-based nitrogen group pollutant decomposition. It also Vehicle for Chemotherapeutics Other Applications Medicine an overview factors affecting been reviewed.

Language: Английский

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Adsorption of heavy metal ions use chitosan/graphene nanocomposites: A review study

Results in Chemistry, Journal Year: 2024, Volume and Issue: 7, P. 101332 - 101332

Published: Jan. 1, 2024

The emission of heavy metals in the environment has caused many problems world due to industrialization society and expansion urbanization. Environmental pollution, including greenhouse gases water-soluble toxic pollutants, is a major concern around world. One most important issues protecting health humans, animals plants cleanliness water. Water substance vital for all living things on planet. can be treated several ways, such as desalination, purification, osmosis, disinfection, deposition contaminants. Among these methods, adsorption method advantages over other methods. surface phenomenon during which contaminants are adsorbed adsorbent with physical forces depends factors temperature, pH, concentration contaminants, time phase contact particle size temperature nature pollutants adsorption. Chitosan received widespread attention an because its low cost great potentials. abundant hydroxyl amino groups that bind metal ions. However, it defects sensitivity thermal stability, mechanical strength, limit application chitosan wastewater treatment. functional modified improve performance via crosslinking graft modification. porosity specific area powder form not ideal, therefore, modification been attempted generate nanoparticles hydrogel. also integrated materials (e.g. graphene, zeolite) resulting composite improved performance. This review mainly focuses reports about derivatives remove different metals. preparation strategy, mechanism, affecting adsorbents each type discussed detail. Recent organic (dyes phenol) removal by briefly discussed.

Language: Английский

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Supercapacitors: An Efficient Way for Energy Storage Application

Materials, Journal Year: 2024, Volume and Issue: 17(3), P. 702 - 702

Published: Feb. 1, 2024

To date, batteries are the most widely used energy storage devices, fulfilling requirements of different industrial and consumer applications. However, efficient use renewable sources emergence wearable electronics has created need for new such as high-speed delivery, faster charge–discharge speeds, longer lifetimes, reusability. This leads to supercapacitors, which can be a good complement batteries. one their drawbacks is lower capability, triggered worldwide research efforts increase density. With introduction novel nanostructured materials, hierarchical pore structures, hybrid devices combining these unconventional electrolytes, significant developments have been reported in literature. paper reviews short history evolution supercapacitors fundamental aspects positioning them among other energy-storage systems. The main electrochemical measurement methods characterize features discussed with focus on specific characteristics limitations. High importance given integral components supercapacitor cell, particularly electrode materials types electrolytes that determine performance device (e.g., power output, cycling stability). Current directions development including carbonaceous forms, transition metal-based compounds, conducting polymers, discussed. synergy between material current collector key factor, well fine-tuning electrolyte.

Language: Английский

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Carbon-doped titanium dioxide (TiO2) as Li-ion battery electrode: Synthesis, characterization, and performance

Results in Chemistry, Journal Year: 2024, Volume and Issue: 7, P. 101422 - 101422

Published: Jan. 1, 2024

Development of lithium-ion batteries (Li-ion batteries) with high safety and solidity features has become a main challenge researchers when practical implementations for large-scale energy storage systems are prioritized. In this work, we introduce useful efficient strategy to manufacture long-standing high-rate carbon-doped TiO2 (C-TiO2) as an anode material. Titanium (TiO2) C-TiO2 were successfully prepared through hydrothermal method in order improve the electrical performance Li-battery. The structure thermal properties investigated by XRD, Raman TGA; whereas evaluated Glvanostatic discharge–charge measurements. density function theory (DFT) results revealed that doped carbon atoms causes considerable stress inside crystal lattice TiO2, avoid or minimize underwent relaxation then optimized. electrodes Li-battery was analyzed 100 cycles at different calcination temperatures 400 450 °C. also showed charge capacities 500 mAhg−1 mAg−1.

Language: Английский

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CdIn2Se4@chitosan heterojunction nanocomposite with ultrahigh photocatalytic activity under sunlight driven photodegradation of organic pollutants

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 267, P. 131465 - 131465

Published: April 9, 2024

Language: Английский

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Nano bioceramics: Properties, applications, hydroxyapatite, nanohydroxyapatite and drug delivery

Case Studies in Chemical and Environmental Engineering, Journal Year: 2024, Volume and Issue: 10, P. 100869 - 100869

Published: July 29, 2024

Bone is the second organ of human body that has most transplants. The concept bone repair evolved over past five decades and known as third generation biomaterials. During integration nanotechnology with bioceramics, an emerging research field called nanobioceramics been born within Due to chemical similarity mineral content bone, are included in definition a new biomaterials whose main purpose create microenvironment improve cellular responses leading osteogenesis. Hydroxyapatite member calcium phosphate family. This substance, which bioactive biocompatible compound, considered component tissue. structural this compound it widely used tissue dental orthopedic applications. Many basic properties hydroxyapatite can be improved by changing scale its particles nanoparticles. Therefore, recent years, various methods for synthesis nanohydroxyapatite have reported. Using different characterization methods, quality synthesized nanostructures checked. In addition bone-related fields, also carrier transfer materials, including drugs, vitamins, proteins. article, modern times, advances biomedical focusing on use bioceramics treatment diseases, function vital organs, engineering brought hopes regenerative medicine. Various being investigated synthesize bioceramic materials using natural synthetic materials. There several challenges enable cost-effective material minimize rejection biological systems. One major incorporating foreign into systems their acceptance reduce humans other organisms studying immune responses. When developing ceramic mechanical one important parameters humans. evaluation criteria mechanical, existing approaches play crucial role validating bioceramics. State-of-the-art techniques

Language: Английский

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Graphene oxide-based biosensors for detection of lung cancer: A review

Results in Chemistry, Journal Year: 2023, Volume and Issue: 7, P. 101300 - 101300

Published: Dec. 31, 2023

Lung cancer is one of the most common diseases worldwide today and has highest mortality rate among cancers. Therefore, early diagnosis this disease special importance. Due to fact that methods for detecting lung are costly time-consuming, providing cheaper faster received attention. With significant development nanotechnology in recent years various nanomaterials, activities have been carried out field. Recent studies show graphene oxide due their unique properties, a high potential design biosensors detect cancer.

Language: Английский

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0,1,2,3D nanostructures, types of bulk nanostructured materials, and drug nanocrystals: An overview

Cancer Treatment and Research Communications, Journal Year: 2024, Volume and Issue: 40, P. 100834 - 100834

Published: Jan. 1, 2024

Functional materials are required to meet the needs of society, such as environmental protection, energy storage and conversion, integrated product production, biological medical processing. bulk nanostructured a research concept that combines nanotechnology with other fields supramolecular chemistry, science, life science develop logically functional from nanodevices. In this review article, nanostructures synthetized by different methods based on types nature nanomaterials. broad sense "top-down" "bottom-up" two foremost synthesize top-down method have been reduced nanomaterials, in case bottom-up method, nanomaterials synthesized elementary level. The which being used chemical vapor deposition thermal decomposition, hydrothermal synthesis, solvothermal pulsed laser ablation, templating combustion microwave gas phase conventional Sol-Gel method. We also briefly discuss various physical for producing then applications many areas storage, supercapacitors, sensors, wastewater treatment, drug delivery nanocrystals. Finally, future challenges nanoarchitecture concepts further development discussed.

Language: Английский

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Rechargeable batteries for energy storage: A review

e-Prime - Advances in Electrical Engineering Electronics and Energy, Journal Year: 2024, Volume and Issue: 8, P. 100510 - 100510

Published: March 13, 2024

Sustainability and lack of resources both outline need for energy storage tactics, materials, devices. In fact, is nowadays the most important, at same time challenging feature in under development developing countries. Renewable energies are focused as minimizing consumption, whereas maximizing energies. Geopolitical features together with wars middle-east Europe borderline criticize such important topic more more. Rechargeable batteries have widely been served developed continuously electronic devices a means storing electrical energy. Therefore, increasing capacity life has become target researchers working this field. Enlargement application performance windows possible by era nanotechnology, that new generations rechargeable enjoy from much higher efficiency respect to first-generation ones. article, after examining electrochemical preparations, their types discussed. Alkaline lead-acid also discussed on basis nanotechnology.

Language: Английский

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