Editor’s choice: Synthesis of Hexahydroxy Strontium Stannate/Tin Dioxide Nanocomposites and their Photocatalytic Properties for Gentian Violet

Author(s):Chunhu YuZeyang XueYajing MaoJianfeng Huang, Feihu TaoZhengyu CaiChuangang Fan and Lizhai Pei*

Background: Gentian violet dye released from industries into the environment has caused serious water pollution and is a significant environmental pollutant to human beings owing to the toxicity. It is urgent to decrease environmental pollution by removing gentian violet in the wastewater.

Objective: The aim is to synthesize hexahydroxy strontium stannate/tin dioxide nanocomposites by a simple hydrothermal method without surfactants and research the photocatalytic performance for gentian violet degradation.

Methods: Hexahydroxy strontium stannate/tin dioxide nanocomposites have been obtained via the hydrothermal method. The structure, size, morphology and photocatalytic performance were characterized by X-ray diffraction, electron microscopy, solid ultraviolet-visible diffuse reflectance spectroscopy and X-ray photoelectron spectroscopy.

Results: The nanocomposites possess oven-shaped morphology with the size of less than 100 nm and are composed of hexagonal SrSn(OH)and tetragonal SnO2 phases. The band gap of the nanocomposites is 3.52 eV. 10 mg hexahydroxy strontium stannate/tin dioxide nanocomposites have the ability to completely degrade 10 mL gentian violet solution with the concentration of 10 mgL-1 under 6 h ultraviolet-visible light irradiation. Hydroxyl radical, hole and superoxide radical are the main species for the gentian violet photocatalytic degradation using the nanocomposites.

Conclusion: The hexahydroxy strontium stannate/tin dioxide nanocomposites show good photocatalytic performance for the GV degradation. The photocatalytic performance for gentian violet degradation using the hexahydroxy strontium stannate/tin dioxide nanocomposites depends on the irradiation time and content of the nanocomposites.

Read more: https://bit.ly/3hFj7Bi

Kudos Article – Modified bacterial cellulose applications: A review

Munair Badshah, Hanif Ullah, Fazli Wahid, Taous Khan

What is it about?

Bacterial cellulose (BC) is free from pectin, lignin, hemicellulose and other active constituents associated with plant derived cellulose. Features such as high biocompatibility and easy modification into the desired shape make BC an ideal candidate for applications in the biomedical fields, i.e., tissue engineering, wound healing and bone regeneration. Additionally, it found applications in proteins and drugs in various forms and routes. However, BC is devoid of therapeutic features and has no resistance to gases and solvents molecules. Therefore BC modifications become mandatory to meet the research market demand. In the current article, we have collected data relevant to as-synthesized and modified BC, properties and their applications in various fields from Web of Science, Science direct, Google and PubMed. As-synthesized BC possesses properties such as high crystallinity, well organized fibrous network, higher degree of polymerization, and ability of being in swollen form. The larger surface area enriched with free accessible hydroxyl groups makes BC an attractive polymer for surface functionalization to expand and enhance its features and potential applications. The majority of reported surface alteration approaches are including amination, methylation and acetylation. In this review, we have summarized and highlighted various approaches for BC surface modification. We have also reported enhancement in the properties of modified BC and expansion in its potential applications in different fields. These applications are ranging from basic uses in biomedical sciences to advanced drug delivery approaches for treating and targeting diseases, and paper-making to high quality electronic devices and biosensors for environmental applications.

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Photo by Adrien Converse on Unsplash

Why is it important?

The current review has importance to give a comprehensive but brief overview of the past and future approaches for BC modification and applications in various fields.

Perspectives

MB

It has been a matter of pleasure to work with renowned authors and publish the past and ongoing research in the field in a comprehensive manner. This will definitely help the fellow researchers to further expand their knowledge about the polymer and its potential applications.

Munair Badshah
Islam College of Pharmacy, Pasrur Road, Sialkot, Pakistan

Read the Original

This page is a summary of: Properties and Applications of Modified Bacterial Cellulose-Based Materials, Current Nanoscience, June 2021, Bentham Science Publishers, DOI: 10.2174/1573413716999201106145528.
You can read the full text: https://bit.ly/3VYR6nG

Editor’s Choice – “An Overview on Polylactic Acid, its Cellulosic Composites and Applications”

Journal: Current Organic Synthesis

Author(s):  Naheed Saba, Mohammad Jawaid and Othman Al-Othman

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Abstract:

Poly lactic acids (PLA) received greater attention among other biodegradable plastics as they exhibit higher strength, stiffness, molecular weight and biocompatibility. PLA are polymers in which the stereo chemical structures are modified by polymerizing according to different versatile and flexible applications. The increased demands for PLA resins create a promising and attractive positive impact on the global agricultural economy by being nontoxic for both human body and the environment. However, the inherent brittleness of PLA essentially hampers its wide applications frame. PLA surface modification through blending, polymerization, filler and fiber reinforcement for fabricating high end composite products perfectly overcomes its shortcomings for various purposes. Present review article is designed to be a comprehensive source of recent literature on PLA structure, synthesis, modification and its different applications. This review article also aims to cover the reported research work of PLA biocomposites and nanocomposites, including manufacturing techniques and there diverge industrial applications.

Read more herehttp://benthamscience.com/journals/current-organic-synthesis/volume/14/issue/2/page/156/

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