Oxidation catalysis not only plays a crucial role in the current chemical industry for the production of key intermediates such as alcohols, epoxides, aldehydes, ketones and organic acids, but also ...will contribute to the establishment of novel green and sustainable chemical processes. This review is devoted to dealing with selective oxidation reactions, which are important from the viewpoint of green and sustainable chemistry and still remain challenging. Actually, some well-known highly challenging chemical reactions involve selective oxidation reactions, such as the selective oxidation of methane by oxygen. On the other hand some important oxidation reactions, such as the aerobic oxidation of alcohols in the liquid phase and the preferential oxidation of carbon monoxide in hydrogen, have attracted much attention in recent years because of their high significance in green or energy chemistry. This article summarizes recent advances in the development of new catalytic materials or novel catalytic systems for these challenging oxidation reactions. A deep scientific understanding of the mechanisms, active species and active structures for these systems are also discussed. Furthermore, connections among these distinct catalytic oxidation systems are highlighted, to gain insight for the breakthrough in rational design of efficient catalytic systems for challenging oxidation reactions.
Selective oxidations of CH
4
, alcohols and CO over heterogeneous catalysts are reviewed from the viewpoint of green and sustainable chemistry.
Food nanotechnology is an emerging and rapidly evolving field that encompasses an extremely broad range of disciplines and has found various applications in different food sectors. The objective of ...this perspective is to update the current knowledge on the nanotechnology-based approaches to prepare delivery vehicles for bioactive compounds. Research progress on the development of nanoparticles made from food biopolymers (i.e., protein and polysaccharide) is particularly highlighted. In addition, two types of most recently developed nanoscale delivery systems, i.e., protein–polysaccharide complex and lipid–biopolymer hybrid nanoparticles, are introduced, and their relevant applications are discussed. Finally, suggestions for future research directions on developing safe, effective, and edible nanoscale delivery vehicles for food applications are provided.
Inspired by the highly versatile natural motors, artificial micro‐/nanomotors that can convert surrounding energies into mechanical motion and accomplish multiple tasks are devised. In the past few ...years, micro‐/nanomotors have demonstrated significant potential in biomedicine. However, the practical biomedical applications of these small‐scale devices are still at an infant stage. For successful bench‐to‐bed translation, biocompatibility of micro‐/nanomotor systems is the central issue to be considered. Herein, the recent progress in micro‐/nanomotors in biocompatibility is reviewed, with a special focus on their biomedical applications. Through close collaboration between researches in the nanoengineering, material chemistry, and biomedical fields, it is expected that a promising real‐world application platform based on micro‐/nanomotors will emerge in the near future.
The biocompatibility of artificial micro‐/nanomotors is essential for real‐world biomedical applications. Recent progress about biocompatible micro‐/nanomotor systems that are based on biocompatible framework materials, chemical fuels (e.g., water, glucose, urea, and acid), external fields (e.g., magnetic field, light, and ultrasound) and biohybrid, is discussed here.
Marine environment monitoring has attracted more and more attention due to the growing concern about climate change. During the past couple of decades, advanced information and communication ...technologies have been applied to the development of various marine environment monitoring systems. Among others, the Internet of Things (IoT) has been playing an important role in this area. This paper presents a review of the application of the Internet of Things in the field of marine environment monitoring. New technologies including advanced Big Data analytics and their applications in this area are briefly reviewed. It also discusses key research challenges and opportunities in this area, including the potential application of IoT and Big Data in marine environment protection.
Designing for a green chemistry future Zimmerman, Julie B; Anastas, Paul T; Erythropel, Hanno C ...
Science (American Association for the Advancement of Science),
01/2020, Letnik:
367, Številka:
6476
Journal Article
Recenzirano
The material basis of a sustainable society will depend on chemical products and processes that are designed following principles that make them conducive to life. Important inherent properties of ...molecules need to be considered from the earliest stage-the design stage-to address whether compounds and processes are depleting versus renewable, toxic versus benign, and persistent versus readily degradable. Products, feedstocks, and manufacturing processes will need to integrate the principles of green chemistry and green engineering under an expanded definition of performance that includes sustainability considerations. This transformation will require the best of the traditions of science and innovation coupled with new emerging systems thinking and systems design that begins at the molecular level and results in a positive impact on the global scale.
Nanotechnology is the most innovative field of 21st century. Extensive research is going on for commercializing nanoproducts throughout the world. Due to their unique properties, nanoparticles have ...gained considerable importance compared to bulk counterparts. Among other metal nanoparticles, zinc oxide nanoparticles are very much important due to their utilization in gas sensors, biosensors, cosmetics, drug-delivery systems, and so forth. Zinc oxide nanoparticles (ZnO NPs) also have remarkable optical, physical, and antimicrobial properties and therefore have great potential to enhance agriculture. As far as method of formation is concerned, ZnO NPs can be synthesized by several chemical methods such as precipitation method, vapor transport method, and hydrothermal process. The biogenic synthesis of ZnO NPs by using different plant extracts is also common nowadays. This green synthesis is quite safe and ecofriendly compared to chemical synthesis. This paper elaborates the synthesis, properties, and applications of zinc oxide nanoparticles.
•Uncovering the evolution of the new energy vehicle industry.•Predicting the technology trends of the new energy vehicle industry.•Using integrated methods of Latent Dirichlet Allocation and Vector ...Autoregression model.
In the sustainable development context, the automotive industry is shifting towards new energy vehicles (NEVs) to reduce carbon emissions. China leads in NEVs production and technology but faces challenges in innovation capacity due to increasing market competition and technological demands. Consequently, to explore the situation of technology innovation of China’s NEVs, this paper delves into the technology changes in this field with the invention granted patents from 2000 to 2021, employing the basic patent-metrics method and Latent Dirichlet Allocation (LDA) topic model for evolution analysis and vector autoregression (VAR) model for trend predictions. The research findings indicate that: (1) the patents pertaining to NEVs have experienced an average annual growth rate of 23%, with notable regional disparities in the spatial distribution of said patents. (2) Among the 8 key technology topics identified, battery equipment technology, brake control system technology, and supplying system technology emerge as the top three technology topics. (3) As NEVs progressively become more intelligent, there is an anticipated surge in interest regarding vehicle braking control technology over the ensuing five years.
Highlights • Green nanotechnology has drawn on the field on green chemistry. • Biosynthesis of nanoparticles is a kind of bottom up approach with reduction/oxidation. • Efficient control of MNPs size ...and shape, critical to optimize MNP-based devices. • It aims to reduce hazardous waste generation and safer applications.
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