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Relevant bibliographies by topics / Hydrogen Nanocrystals

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Dissertations / Theses
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Academic literature on the topic 'Hydrogen Nanocrystals'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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Journal articles on the topic "Hydrogen Nanocrystals"

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Liu, Lin, Xiaogang Yang, Houyong Yu, Chao Ma та Juming Yao. "Biomimicking the structure of silk fibers via cellulose nanocrystal as β-sheet crystallite". RSC Adv. 4, № 27 (2014): 14304–13. http://dx.doi.org/10.1039/c4ra01284d.

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Biomimic silk fibers with refined crystalline structure were produced via incorporating cellulose nanocrystals into silk fibroin matrix to mimic the β-sheet crystallites in natural silk. The fibers exhibit excellent thermal and mechanical properties, attributed to the strong hydrogen bonding interactions between cellulose nanocrystals and silk fibroin as well as cellulose nanocrystal-induced ordered structure.

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ABDULSATTAR, MUDAR AHMED, and HASAN MUDAR ALMAROOF. "ADSORPTION OF H2 AND O2 GASES ON ZnO WURTZOID NANOCRYSTALS: A DFT STUDY." Surface Review and Letters 24, Supp01 (2017): 1850008. http://dx.doi.org/10.1142/s0218625x18500087.

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In the present work, we apply wurtzoids nanocrystals with density functional theory to explain the sensitivity of ZnO nanostructures towards hydrogen and oxygen molecules. Present results of ZnO nanocrystals’ sensing to H2 and O2 molecules show a reduction in the energy gap and hence electrical resistivity of ZnO nanocrystals upon attachments of these molecules in agreement with experiment. The results also show that higher temperatures increase the sensitivity of ZnO wurtzoids towards H2 and O2 molecules with the maximum sensitivity approximately at 390[Formula: see text]C and 417[Formula: se

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JAVAN, MASOUD BEZI. "ELECTRONIC AND OPTICAL PROPERTIES OF NITROGEN DOPED SiC NANOCRYSTALS: FIRST PRINCIPLES STUDY." International Journal of Modern Physics B 27, no. 13 (2013): 1350053. http://dx.doi.org/10.1142/s0217979213500537.

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A typical nitrogen doped spherical SiC nanocrystal with a diameter of 1.2 nm ( Si 43 C 44 H 76) using linear combination atomic orbital (LCAO) in combination with pseudopotential density functional calculation have been studied. Our selected SiC nanocrystal has been modeled taking all the cubic bulk SiC atoms contained within a sphere of a given radius and terminating the surface dangling bonds with hydrogen atoms. We have examined nine possible situations in which nitrogen has a high probability for replacement in the lattice or placed between atoms in the nanocrystal. We have found that the

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Dhavse, Rasika, Kumar Prashant, Chetan Dabhi, Anand Darji, and R. M. Patrikar. "Modified ITAT Model for Data Retention in Nanocrystals Based Flash Memory Gate Stack." Journal of Nano Research 45 (January 2017): 1–11. http://dx.doi.org/10.4028/www.scientific.net/jnanor.45.1.

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This work applies combination of Direct Tunneling model and BSIM4 based ITAT model to explain the leakage of electrons from charged nanocrystals to p-type silicon substrate in data retention condition, for an ultra-thin tunnel oxide, low voltage programmable silicon nanocrystal based flash gate stack. Basic expressions of these models are modified to incorporate the nanocrystals related charge leakage in idle mode. The concept is supported by simulating these models and comparing them with the experimental data. Transition of electrons is considered as a result of Direct Tunneling and their tr

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Berger, Thomas, Oliver Diwald, Erich Knözinger, Francesco Napoli, Mario Chiesa, and Elio Giamello. "Hydrogen activation at TiO2 anatase nanocrystals." Chemical Physics 339, no. 1-3 (2007): 138–45. http://dx.doi.org/10.1016/j.chemphys.2007.06.021.

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Liu, Zhengqing, Zongyou Yin, Casandra Cox, et al. "Room temperature stable COx-free H2 production from methanol with magnesium oxide nanophotocatalysts." Science Advances 2, no. 9 (2016): e1501425. http://dx.doi.org/10.1126/sciadv.1501425.

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Methanol, which contains 12.6 weight percent hydrogen, is a good hydrogen storage medium because it is a liquid at room temperature. However, by releasing the hydrogen, undesirable CO and/or CO2 byproducts are formed during catalytic fuel reforming. We show that alkaline earth metal oxides, in our case MgO nanocrystals, exhibit stable photocatalytic activity for CO/CO2-free H2 production from liquid methanol at room temperature. The performance of MgO nanocrystals toward methanol dehydrogenation increases with time and approaches ~320 μmol g−1 hour−1 after a 2-day photocatalytic reaction. The

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Wan, Su Kim, and Seok Rhee Dong. "Synthesis of Titanium Dioxide in Hydrogen Peroxide Solution and its Photocatalytic Character." Advanced Materials Research 827 (October 2013): 34–37. http://dx.doi.org/10.4028/www.scientific.net/amr.827.34.

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TiO2nanocrystals were synthesized from Titanium Tetraisopropoxide in H2O2solution, and utilized as photocatalysts for degradation of humic acid in aqueous solution. The highly pure TiO2nanocrystals were obtained by excluding the use of inorganic acids that might consequently cause contamination of active catalytic surface sites of the nanocrystals by Cl-, NO3-and SO42-. Particle size and crystallinity of the nanocrystals were increased with progressing the refluxing time 1 ~ 9 h at 120°C in an oil bath. By varying H2O2/Ti = 5.5 ~ 55, the crystalline phase of anatase/rutile ratio of the nanocry

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Yoo, Jisun, In Hye Kwak, Ik Seon Kwon, et al. "Nickel sulfide nanocrystals for electrochemical and photoelectrochemical hydrogen generation." Journal of Materials Chemistry C 8, no. 9 (2020): 3240–47. http://dx.doi.org/10.1039/c9tc05703j.

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Wang, Weiyu, Jun Xu, Yanxi Zhao, et al. "Facet dependent pairwise addition of hydrogen over Pd nanocrystal catalysts revealed via NMR using para-hydrogen-induced polarization." Physical Chemistry Chemical Physics 19, no. 14 (2017): 9349–53. http://dx.doi.org/10.1039/c7cp00352h.

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Kanemitsu, Yoshihiko, and Shinji Okamoto. "Optical properties of hydrogen terminated silicon nanocrystals." Solid-State Electronics 42, no. 7-8 (1998): 1315–18. http://dx.doi.org/10.1016/s0038-1101(98)00023-9.

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Dissertations / Theses on the topic "Hydrogen Nanocrystals"

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Wilkinson, Andrew Richard. "The optical properties of silicon nanocrystals and the role of hydrogen passivation /." View thesis entry in Australian Digital Program, 2006. http://thesis.anu.edu.au/public/adt-ANU20060202.111537/index.html.

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Bastola, Ebin. "The Catalytic Activity of Gold/Cadmium Sulfide (Au/CdS) Nanocrystals." Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1403277153.

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Wilkinson, Andrew Richard, and arw109@rsphysse anu edu au. "The Optical Properties of Silicon Nanocrystals and the Role of Hydrogen Passivation." The Australian National University. Research School of Physical Sciences and Engineering, 2006. http://thesis.anu.edu.au./public/adt-ANU20060202.111537.

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This thesis examines the optical properties of nanoscale silicon and the sensitization of Er with Si. In this context, it predominantly investigates the role of defects in limiting the luminescence of Si nanocrystals, and the removal of these defects by hydrogen passivation. The kinetics of the defect passivation process, for both molecular and atomic hydrogen, are studied in detail. Moreover, the optical absorption of Si nanocrystals and the effect of annealing environment (during nanocrystal synthesis) on the luminescence are investigated. The effect of annealing temperature and hydrogen p

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Li, Guangqin. "Studies on Hydrogen-Storage Properties of Palladium Based Nanomaterials." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/193566.

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Huang, Zhenguo. "Effects of compositions and mechanical milling modes on hydrogen storage properties." Access electronically, 2007. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20080619.121505/index.html.

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Lian, Zichao. "Photo-Induced Carrier Transfer in Heterostructured Semiconductor Nanocrystals for Solar Energy Conversion." Kyoto University, 2018. http://hdl.handle.net/2433/235053.

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Batalha, Nuno Miguel Rocha. "Optimization of the balance between activity and selectivity on a hydroisomerization catalyst." Thesis, Poitiers, 2012. http://www.theses.fr/2012POIT2268/document.

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Un des principaux défis lors de l'élaboration des catalyseurs adéquats pour le procédé de déparaffinage catalytique (hydroisomérisation) est de maximiser le rendement en isomères et l'activité du catalyseur, tout en maintenant une faible sélectivité en produits de craquage. En effet, des catalyseurs avec sélectivité de forme à base de zéolithes à taille de pore intermédiaire, par exemple Pt/ZSM-22, sont sélectives en isomères, tandis que les zéolithes à large pore sont plus actifs, mais moins sélectif. L'objectif principal de cette thèse était, alors, d’étudier et de développer un catalyseur à

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Wang, Xiaojie [Verfasser]. "Functional Nanocomposite Hydrogels Based on Cellulose Nanocrystals / Xiaojie Wang." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://d-nb.info/1226425658/34.

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Gicquel, Erwan. "Development of stimuli-responsive cellulose nanocrystals hydrogels for smart applications." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI105/document.

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L’originalité de ce projet consiste au développement et à l’étude de nouvelles structures hybrides à base de nanocelluloses et de polymères stimulables. En particulier, c’est le design d’hydrogels aux propriétés thermosensibles qui est visé. Les nanocelluloses - nanoparticules issues de la cellulose - sont de deux types : les nanocristaux de cellulose (CNCs) et les nanofibrilles de cellulose (CNFs) et possèdent des propriétés bien particulières. Cette étude s’est concentrée sur l’élaboration d’hydrogels de CNCs. Plusieurs polymères thermosensibles ont été utilisés pour leur biocompatibilité et

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Lin, Ning. "Cellulose nanocrystals : surface modification and advanced materials." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENI034/document.

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Ce travail porte sur les propriétés des nanocristaux de cellulose, leur modification de surface et le développement de matériaux avancés. Diverses approches sont utilisées sur ces substrats nanométriques visant à modifier leurs propriétés de surface et étendre leur utilisation dans des applications très sophistiquées, telles que la postsulfation et la désulfatation, le greffage et l'adsorption de polymères, l’oxydation sélective, le greffage moléculaire et l'inclusion "hôte-invité". Sur la base de modifications de surface, l'analyse des propriétés (pour différents taux de groupements sulfates)

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Book chapters on the topic "Hydrogen Nanocrystals"

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Townsend, Troy K., Erwin M. Sabio, Nigel D. Browning, and Frank E. Osterloh. "The Hydrogen Evolution Reaction: Water Reduction Photocatalysis—Improved Niobate Nanoscroll Photocatalysts for Partial Water Splitting." In Inorganic Metal Oxide Nanocrystal Photocatalysts for Solar Fuel Generation from Water. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05242-7_2.

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Athar, Shoeb, Rani Bushra, and Tanvir Arfin. "Cellulose Nanocrystals and PEO/PET Hydrogel Material in Biotechnology and Biomedicine: Current Status and Future Prospects." In Nanocellulose and Nanohydrogel Matrices. Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527803835.ch7.

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Nazir, Roshan, Abhay Prasad, Ashish Parihar, Mohammed S. Alqahtani, and Rabbani Syed. "Colloidal Nanocrystal-Based Electrocatalysts for Combating Environmental Problems and Energy Crisis." In Colloids - Types, Preparation and Applications. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95338.

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The serious threat that human beings face in near future will be shortage of fossil fuel reserves and abrupt changes in global climate. To prepare for these serious concerns, raised due to climate change and shortage of fuels, conversion of excessive atmospheric CO2 into valuable chemicals and fuels and production of hydrogen from water splitting is seen most promising solutions to combat the rising CO2 levels and energy crises. Amoung the various techniques that have been employed electrocatalytic conversion of CO2 into fuels and hydrogen production from water has gained tremendous interest. Hydrogen is a zero carbon-emitting fuel, can be an alternative to traditional fossil fuels. Therefore, researchers working in these areas are constantly trying to find new electrocatalysts that can be applied on a real scale to deal with environmental issues. Recently, colloidal nanocrystals (C-NCs)-based electrocatalysts have gained tremendous attention due to their superior catalytic selectivity/activity and durability compared to existing bulk electrodes. In this chapter, the authors discuss the colloidal synthesis of NCs and the effect of their physiochemical properties such as shape, size and chemical composition on the electrocatalytic performance and durability towards electrocatalytic H2 evolution reaction (EH2ER) and electrocatalytic CO2 reduction reactions (ECO2RR). The last portion of this chapter presents a brief perspective of the challenges ahead.

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Conference papers on the topic "Hydrogen Nanocrystals"

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Zhang, Jiatao. "Cation coordination reactions on nanocrystals: surface/interface, doping control and advanced photocatalysis applications (Conference Presentation)." In Solar Hydrogen and Nanotechnology XI, edited by Chung-Li Dong. SPIE, 2016. http://dx.doi.org/10.1117/12.2237717.

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Lu, Ganhua, Liying Zhu, Stephen Hebert, Edward Jen, Leonidas Ocola, and Junhong Chen. "Engineering Gas Sensors With Aerosol Nanocrystals." In 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2007. http://dx.doi.org/10.1115/mnc2007-21301.

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Rutile tin oxide (SnO2) is a wide band gap (3.6 eV at 300K [1]) n-type semiconductor material. It is widely used as sensing elements in gas sensors [2]. The sensing mechanism is generally attributed to the significant change in the electrical resistance of the material associated with the adsorption/desorption of oxygen on the semiconductor surface [3]. The formation of oxygen adsorbates (O2− or O−) results in an electron-depletion surface layer due to the electron transfer from the oxide surface to oxygen [4]. Recent studies [5, 6] have shown that use of tin oxide nanocrystals significantly i

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Chen, Z. F., Y. Zhang, J. Q. Xu, P. C. Xu, and X. X. Li. "Cubic platinum-tungsten alloy nanocrystals in-situ grown on molybdenum disulfide nanosheets for high specific and ultra sensitive detection of hydrogen peroxide." In TRANSDUCERS 2015 - 2015 18th International Solid-State Sensors, Actuators and Microsystems Conference. IEEE, 2015. http://dx.doi.org/10.1109/transducers.2015.7181197.

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Neogi, Arup, Santaneel Ghosh, Brett Garner, Jianyou Li, Tong Cai, and Zhibing Hu. "CdTe quantum dot in tunable hydrogel nanocrystals." In 2007 Quantum Electronics and Laser Science Conference. IEEE, 2007. http://dx.doi.org/10.1109/qels.2007.4431779.

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Vlasova, A. M. "Deformation features of magnesium [11̅01]- and [0001]-nanocrystal with hydrogen and vacancies." In PROCEEDINGS OF THE ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES. Author(s), 2018. http://dx.doi.org/10.1063/1.5083564.

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Yin, Ooi Shok, Ishak Ahmad, and Mohd Cairul Iqbal Mohd Amin. "Synthesis of chemical cross-linked gelatin hydrogel reinforced with cellulose nanocrystals (CNC)." In THE 2014 UKM FST POSTGRADUATE COLLOQUIUM: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2014 Postgraduate Colloquium. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4895226.

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Duy-Thach Phan and Gwiy-Sang Chung. "Effects of palladium nanocrystal morphologies on hydrogen sensors based on palladium-graphene hydrid." In 2015 IEEE Sensors. IEEE, 2015. http://dx.doi.org/10.1109/icsens.2015.7370203.

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Lim, Lim Sze, Ishak Ahmad, Mohd Azwani Shah Mat Lazim, and Mohd Cairul Iqbal Mohd Amin. "Chemical crosslinking of acrylic acid to form biocompatible pH sensitive hydrogel reinforced with cellulose nanocrystals (CNC)." In THE 2014 UKM FST POSTGRADUATE COLLOQUIUM: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2014 Postgraduate Colloquium. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4895224.

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