Special Issue "Nanomaterials for Renewable and Sustainable Energy"
A special issue of Nanomaterials (ISSN 2079-4991).
Deadline for manuscript submissions: 31 December 2017
The utilization of nanomaterials in technologies for renewable energy and sustainability applications continues to represent an important area of academic and commercial research. There are numerous mechanisms by which the integration of nanomaterials can improve device performance. These include, for example, facilitation of increased harvesting and conversion efficiencies, simplified and rapid manufacturing processes for novel device architectures, and improved energy storage properties. We invite authors to contribute original research articles or comprehensive review articles covering the most recent progress and new developments in the design and utilization of nanomaterials for highly efficient, novel devices relevant to applications in renewable energy and sustainability. This special issue aims to cover a broad range of subjects, from nanomaterials synthesis to the design and characterization of energy devices and technologies with nanomaterial integration. The format of welcomed articles includes full papers, communications, and reviews. Potential topics include, but are not limited to:
- Nanomaterials development, synthesis, and fabrication for renewable energy applications;
- Novel micro/nanofabrication technologies for efficient energy devices;
- Design and preparation of novel nanotextured/nanostructured surfaces for improved energy harvesting and conversion efficiencies;
- Low-dimensional nanomaterials or nanocomposites for renewable energies;
- Green techniques for energy-related nanomaterials processing;
- Nanomaterial-based technologies for sustainability and environmental issues;
- Other studies of nanoscience and nanotechnology associated with renewable energy and sustainability.
Prof. Dr. Ming-Tsang Lee
Prof. Dr. Coleman X. Kronawitter
Prof. Dr. Seung Hwan Ko
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access monthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- energy conversion
- transport phenomena
- nanomaterials synthesis and characterizations
- nano/microfabrications for energy devices
- nanotechnology for sustainability
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Paper type: Article
Title: Plasmon Enhanced Hierarchical ZnO-Au Nanostructure for Water Splitting Photoelectrochemical Cell
Authors: Jinhyeong Kwon1, Hyunmin Cho1, Jinwook Jung1, Habeom Lee1, Sukjoon Hong2, Junyeob Yeo3, Seung Hwan Ko1*
Affiliation: 1 Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
2 Department of Mechanical Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan Gyeonggi-do 15588, Korea
3 Novel Applied Nano Optics (NANO) Lab, Department of Physics, Kyungpook National University, 80 Daehak-ro, Bukgu, Daegu 41566, Korea
Abstract: Recently, increasing demands for the clean and sustainable energy source promotes development of solar-based energy generation way. As one of the alternative solar energy source, solar water splitting is promising since it has simple physical principle and various candidate materials: metal oxides. In this study, ZnO is selected as main material due to its electrical property. ZnO is n-type semiconductor material which has large (=3.3 eV) and direct band gap. Moreover, it can be easily synthesized through hydrothermal growth. Nevertheless, there is one critical issue on ZnO. Owing to its improper band gap position, it can only absorb UV light that exists only 3% of sunlight on the ground.
Therefore, several efforts are tried to reduce the limitation and to extend absorbing wavelength region. For example, deposition of noble metals such as Pt, IrO2, Au and Ag on the surface of the water splitting material by RF sputtering, LPCVD, ALD and other vacuum technique are presented for the catalyst or trigger of plasmon effect that eventually result in increased efficiency. However, those vacuum based methods are required prolonged working time, cost and high temperature.
In order to meet facile synthesis way, photoreduction process is introduced to produce hierarchical nanostructure for enhancing plasmon effect. In brief, gold nanoparticles are synthesized by UV irradiation for only several minutes on the ZnO nanowire arrays. Consequently, ZnO/Au hierarchical structure is produced and examined through 3-electrode method. Moreover, plasmon enhanced effect is observed by various analytic tools.
Paper title: Investigation of Phonon Transport through Nanoscale Contact in Tip-based Thermal Analysis of Nanomaterials
Authors: Jay Dulhani and Bong Jae Lee*
Affiliation: Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea
*Correspondence: email@example.com; Tel.: +82-42-350-3239
Abstract: Recently, nanomaterials have been actively employed in various technologies for energy and sustainability, such as bio-sensing, gas sensing, solar thermal energy conversion, passive radiative cooling, etc. Understanding thermal transports inside such nanomaterials is crucial for optimizing their performance for a certain application. In order to probe the thermal transport inside nanomaterials or nanostructures, tip-based nanoscale thermometry has often been employed. It has been well known that phonon transport in nanometer scale is fundamentally different from that occurred in macroscale. Therefore, the Fourier’s law that relies on the diffusion approximation is not ideally suitable for describing the phonon transport occurred in nanostructures and/or through nanoscale contact. In the present study, the gray Boltzmann transport equation (BTE) is numerically solved using finite volume method. Based on the gray BTE, phonon transport through the constriction formed by a probe itself as well as the nanoscale contact between the probe tip and the specimen is investigated. The interaction of tip and specimen (i.e., simplified as a substrate) is explored qualitatively by analyzing the temperature variation inside the system. It is observed that thermal spreading inside the substrate increases with increase in degree of constriction of the probe. The magnitudes of total, substrate, tip-interface resistance are established for range of constriction ratio of the probe. The combined thermal resistance of tip and interface (as predicted by BTE) is found to be much higher than the total resistance predicted by the Fourier’s law.
Keywords: Nanoscale Constriction and Contact; Boltzmann Transport Equation; Phonon Transport in Nanomaterials
Paper title: Highly Efficient and Stable Organic Solar Cells via Interface Engineering with a Nanostructure Bilayer In-Situ Reduced Graphene Oxide/PFN Cathode Interlayer
Author: Ding Zheng, Pu Fan, Ran Ji, and Junsheng Yu*
Affiliation: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, P. R. China
Abstract: An innovative nanostructure bilayer cathode interlayer (CIL) consisting of the in-situ thermal reduced graphene oxide (IT-RGO) and poly[(9,9-bis(3’-(N,N-dimethylamion)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctyl)-fluorene] (PFN) is realized in the inverted organic solar cells (OSCs). We introduce an approach to prepare the CIL with high electronic quality by using IT-RGO as a template to modulate the morphology of PFN and optimize the energy-level alignment of OSCs, while the IT-RGO template is fabricated by spray coating method with facile in-situ thermal reduction. This bilayer IT-RGO/PFN CIL shows well charge transport efficiency and less charge recombination which leads to a significant enhancement of power conversion efficiency from 6.44 % to 8.34% for PTB7:PC71BM-based OSCs. In addition, the long-term stability is improved by IT-RGO/PFN CIL when compared to the pristine device. These results indicated that the bilayer IT-RGO/PFN CIL is a promising way to avoid the defects of water-soluble conjugated polymer electrolytes such as PFN for highly efficient and stable OSCs.
Keywords: organic solar cell, reduced graphene oxide, PFN, bilayer cathode interlayer, in-situ thermal reduction
Paper title: Nanomaterial Catalysts in Artificial Photosynthesis
Authors: Shunichi Fukuzumi,*ab Yong-Min Lee,a and Wonwoo Nam*a
Affiliation: a Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
b Faculty of Science and Engineering, Meijo University, Nagoya, Aichi 468-8502, Japan
Correspondance: E-mail: firstname.lastname@example.org, email@example.com
Abstract: Nanomaterial catalysts play very important roles in each step in artificial photosynthesis. This review focuses on the roles of nanomaterial catalysts in light-harvesting, charge-separation, water oxidation and reduction as well as CO2 reduction. Alkanethiolate-monolayer-protected metal nanoclusters (MPCs) were modified with light-harvesting and charge-separation molecules to facilitate photoinduced energy transfer and electron transfer. Incorporation of charge-separation molecules into nanosized mesoporous silica-alumina resulted in remarkable elongation of the lifetime of the charge-separated state to enhance the photocatalytic activity and stability. Thermal and photochemical water reduction for hydrogen evolution and water oxidation for oxygen evolution using molecular catalysts and nanomaterial catalysts have been discussed including the conversion from molecular catalysts to more reactive nanomaterial catalysts in the course of water reduction and oxidation. Incorporation of a cobalt(II) chlorin complex into multi-walled carbon nanotubes has made it possible to reduce CO2 selectively to CO using triethylamine as an electron donor and a Ru complex as a photocatalyst in an aqueous solution in competition with hydrogen evolution from water.