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Selected Papers from 2017 International Conference on Micro/Nanomachines

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ISBN: 9783038970811 / 9783038970828 Year: Pages: VIII, 170 DOI: 10.3390/books978-3-03897-082-8 Language: english
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Sciences --- Mechanical Engineering
Added to DOAB on : 2018-08-09 17:08:18
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The 2017 International Conference on Micro/Nanomachines (http://www.icmnm.org/) was held in Wuhan, China, 25–28 August, 2017. Micro/nanomotors (MNMs), which are defined as micro/nanodevices capable of converting energy into autonomous motion, can be used to pick up, transport, and release various cargoes within a liquid medium. They have important potential applications, for example, in drug delivery, biosensors, protein and cell separation, microsurgeries, and environment remediation. MNMs can be classified into two categories, according to their propulsion mechanism. In this respect, self-propelled MNMs are capable of moving autonomously without external intervention, but they either require toxic fuel or have a short lifespan. MNMs actuated by external fields, such as light, magnetic field, and acoustic waves, are not subject to these problems, do not require toxic fuels, nor give rise to by-products during the motion process. For both self-propelled and field-actuated MNMs, there is still a long way to go before we reach practical applications. The future development of MNMs should be focused on improving the energy conversion efficiency through structure optimization, exploring new propulsion mechanisms and endowing MNMs with environmental responses for self-navigation, detection, and specific operations. In this way, MNMs will approach their practical application in biomedicine, environment treatment, microengineering, etc.

Application of Photoactive Nanomaterials in Degradation of Pollutants

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ISBN: 9783039213818 / 9783039213825 Year: Pages: 134 DOI: 10.3390/books978-3-03921-382-5 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General)
Added to DOAB on : 2019-12-09 11:49:15
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Photoactive nanomaterials have been receiving increasing attention due to their potential application in the light-driven degradation of water and gas-phase pollutants. However, to exploit the great potential of photoactive materials and access their properties requires fine-tuning of their size/shape-dependent chemical–physical properties, and on the ability to integrate them in photoreactors or to deposit them onto large surfaces. Therefore, the synthetic approach as well as post-synthesis manipulation could strongly affect the final photocatalytic properties of the nanomaterial. The aim of the present Special Issue is to report on the most recent progress towards the application of photoactive nanomaterials and nanomaterial-based coatings in pollutant degradation, paying particular attention to cases close to real application: scalable synthetic approaches to nanocatalysts, preparation of nanocatalyst-based coatings, degradation of real pollutants and bacterial inactivation, and application in building materials.

Element-Doped Functional Carbon-based Materials

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ISBN: 9783039282241 / 9783039282258 Year: Pages: 188 DOI: 10.3390/books978-3-03928-225-8 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: General and Civil Engineering --- Technology (General)
Added to DOAB on : 2020-01-30 16:39:46
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Carbon materials are one of the most fascinating materials because of their unique properties and potential use in several applications. They can be obtained from residues or by using advanced synthesis technologies like chemical vapor deposition. The carbon family is very broad, ranging from classical activated carbons to more advanced species such as carbon nanotubes and graphene. The surface chemistry is one of the most interesting aspects of this broad family of materials, which allows the incorporation of different types of chemical functionalities or heteroatoms on the carbon surface, such as O, N, B, S, or P, which can modify the acid–base character, hydrophobicity/hydrophilicity, or the electronic properties of these materials and, thus, determine the final application. This book represents a collection of original research articles and communications focused on the synthesis, properties, and applications of heteroatom-doped functional carbon materials.

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