Photocatalytic Degradation of Plastic Waste: A Mini Review.
Qian Ying Lee,Hong Li,Hong Li +2 more
TLDR
In this paper, a mini review of photocatalytic photodegradation of polymers is presented, with an emphasis on titanium dioxide (TiO2), which is the most frequently used photocatalyst.Abstract:
Plastic waste becomes an immediate threat to our society with ever-increasing negative impacts on our environment and health by entering our food chain. Sunlight is known to be the natural energy source that degrades plastic waste at a very slow rate. Mimicking the role of sunlight, the photocatalytic degradation process could significantly accelerate the degradation rate thanks to the photocatalyst that drastically facilitates the photochemical reactions involved in the degradation process. This mini review begins with an introduction to the chemical compositions of the common plastic waste. The mechanisms of photodegradation of polymers in general were then revisited. Afterwards, a few photocatalysts were introduced with an emphasis on titanium dioxide (TiO2), which is the most frequently used photocatalyst. The roles of TiO2 photocatalyst in the photodegradation process were then elaborated, followed by the recent advances of photocatalytic degradation of various plastic waste. Lastly, our perspectives on the future research directions of photocatalytic plastic degradation are present. Herein, the importance of catalytic photodegradation is emphasized to inspire research on developing new photocatalysts and new processes for decomposition of plastic waste, and then to increase its recycling rate particularly in the current pandemic with the ever-increasing generation of plastic waste.read more
Citations
More filters
Journal ArticleDOI
Photocatalytic Conversion of Plastic Waste: From Photodegradation to Photosynthesis
TL;DR: In this article , the recent advances in plastic conversion through photocatalysis have been comprehensively summarized and the challenges and the perspectives on establishing a new paradigm toward a sustainable and circular plastic economy are also put forward.
Journal ArticleDOI
Environmental impacts of post-consumer plastic wastes: Treatment technologies towards eco-sustainability and circular economy.
Shashi Chawla,Basil Sajan Varghese,Chithra A,Chaudhery Ghazanfar Hussain,Rüstem Keçili,Chaudhery Mustansar Hussain +5 more
TL;DR: In this paper , the authors discuss the environmental effects of post-consumer plastic wastes as well as the emerging approaches for the treatment of these environmental wastes towards eco-sustainability and circular economy.
Journal ArticleDOI
Microbial abilities to degrade global environmental plastic polymer waste are overstated
Gavin Lear,S. D. M. Maday,Victor Marques de Oliveira Gambarini,Grant L. Northcott,Robert Abbel,John Merriam Kingsbury,L.D. Weaver,Jeff Wallbank,Olga Pantos +8 more
TL;DR: In this paper , the authors systematically surveyed the international literature to confirm how many microorganisms proposed to degrade plastics (n = 664) cause substantial (i.e. 20% mass) losses of virgin polymer, rather than losses of plastic additives, filler, and/or shedding of polymer micro-fragments.
Journal ArticleDOI
Microplastics in the Ecosystem: An Overview on Detection, Removal, Toxicity Assessment, and Control Release
Bhamini Pandey,Jigyasa Pathak,Poonam Singh,Ravinder Kumar,Amit Kumar,Sandeep Kaushik,Tarun Kumar Thakur +6 more
TL;DR: In this article , the authors provide insight into conventional and advanced methods applied for microplastic removal from aquatic systems and the impact of COVID-19 on global plastic waste production.
References
More filters
Journal ArticleDOI
Understanding TiO2 photocatalysis: mechanisms and materials.
Jenny Schneider,Masaya Matsuoka,Masato Takeuchi,Jinlong Zhang,Yu Horiuchi,Masakazu Anpo,Detlef W. Bahnemann +6 more
TL;DR: This paper presents a meta-analyses of the chiral stationary phase transition of Na6(CO3)(SO4)2, Na2SO4, and Na2CO3 of the Na2O/Na2O 2 mixture at the stationary phase and shows clear patterns in the response of these two materials to each other.
Journal ArticleDOI
TiO2 photocatalysis: Design and applications
Kazuya Nakata,Akira Fujishima +1 more
TL;DR: In this article, a review of recent developments in the area of TiO 2 photocatalysis research, in terms of new materials from a structural design perspective, has been summarized.
Journal ArticleDOI
Photodegradation Performance of g-C3N4 Fabricated by Directly Heating Melamine
TL;DR: The results clearly indicate that the metal-free g-C(3)N(4) has good performance in photodegradation of organic pollutant.
Journal ArticleDOI
Photocatalytic Water Splitting: Recent Progress and Future Challenges
Kazuhiko Maeda,Kazunari Domen +1 more
TL;DR: In this article, the state of the art and future challenges in photocatalytic water splitting with a focus on the recent progress of our own research are discussed. But the focus is on the development of cocatalysts and related physical and materials chemistry.
Journal ArticleDOI
A review on g-C3N4-based photocatalysts
TL;DR: In this paper, the fundamental mechanism of heterogeneous photocatalysis, advantages, challenges and the design considerations of g-C3N4-based photocatalysts are summarized, including their crystal structural, surface phisicochemical, stability, optical, adsorption, electrochemical, photoelectrochemical and electronic properties.