Author
Petra E. de Jongh
Other affiliations: Rutgers University, University of Liège
Bio: Petra E. de Jongh is an academic researcher from Utrecht University. The author has contributed to research in topics: Catalysis & Nanoparticle. The author has an hindex of 41, co-authored 144 publications receiving 8053 citations. Previous affiliations of Petra E. de Jongh include Rutgers University & University of Liège.
Topics: Catalysis, Nanoparticle, Hydrogen storage, Hydrogen, Particle size
Papers published on a yearly basis
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892 citations
TL;DR: This work presents an alternative strategy based on control over collective properties, revealing the pronounced impact of the three-dimensional nanospatial distribution of metal particles on catalyst stability and paves the way towards the rational design of practically relevant catalysts and other nanomaterials with enhanced stability and functionality.
Abstract: Supported metal nanoparticles play a pivotal role in areas such as nanoelectronics, energy storage/conversion and as catalysts for the sustainable production of fuels and chemicals. However, the tendency of nanoparticles to grow into larger crystallites is an impediment for stable performance. Exemplarily, loss of active surface area by metal particle growth is a major cause of deactivation for supported catalysts. In specific cases particle growth might be mitigated by tuning the properties of individual nanoparticles, such as size, composition and interaction with the support. Here we present an alternative strategy based on control over collective properties, revealing the pronounced impact of the three-dimensional nanospatial distribution of metal particles on catalyst stability. We employ silica-supported copper nanoparticles as catalysts for methanol synthesis as a showcase. Achieving near-maximum interparticle spacings, as accessed quantitatively by electron tomography, slows down deactivation up to an order of magnitude compared with a catalyst with a non-uniform nanoparticle distribution, or a reference Cu/ZnO/Al(2)O(3) catalyst. Our approach paves the way towards the rational design of practically relevant catalysts and other nanomaterials with enhanced stability and functionality, for applications such as sensors, gas storage, batteries and solar fuel production.
580 citations
TL;DR: The predicted decrease of the hydrogen desorption temperature is an important step toward the application of Mg as a hydrogen storage material.
Abstract: Magnesium hydride is cheap and contains 7.7 wt % hydrogen, making it one of the most attractive hydrogen storage materials. However, thermodynamics dictate that hydrogen desorption from bulk magnesium hydride only takes place at or above 300 °C, which is a major impediment for practical application. A few results in the literature, related to disordered materials and very thin layers, indicate that lower desorption temperatures are possible. We systematically investigated the effect of crystal grain size on the thermodynamic stability of magnesium and magnesium hydride, using ab initio Hartree−Fock and density functional theory calculations. Also, the stepwise desorption of hydrogen was followed in detail. As expected, both magnesium and magnesium hydride become less stable with decreasing cluster size, notably for clusters smaller than 20 magnesium atoms. However, magnesium hydride destabilizes more strongly than magnesium. As a result, the hydrogen desorption energy decreases significantly when the crys...
533 citations
Max Planck Society1, University of Turin2, Technical University of Denmark3, Curtin University4, Utrecht University5, Dalian Institute of Chemical Physics6, Korea Institute of Science and Technology7, University of Paris8, University of Oxford9, Rutherford Appleton Laboratory10, Université catholique de Louvain11, University of Crete12, University of Nottingham13, Griffith University14, Aarhus University15, Tohoku University16, Hiroshima University17, Kyushu University18, University of the Western Cape19, Stockholm University20, University of Bologna21, University of Southern Denmark22, National Institute of Standards and Technology23
TL;DR: In this article, the authors present a review of the development of hydrogen storage materials, methods and techniques, including electrochemical and thermal storage systems, and an outlook for future prospects and research on hydrogen-based energy storage.
439 citations
TL;DR: In this paper, the photoelectrochemical properties of polycrystalline Cu2O electrodes are discussed with regard to the application of the oxide as a photocatalytic material for water splitting.
350 citations
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Journal Article•
28,685 citations
TL;DR: This Review introduces several typical energy storage systems, including thermal, mechanical, electromagnetic, hydrogen, and electrochemical energy storage, and the current status of high-performance hydrogen storage materials for on-board applications and electrochemicals for lithium-ion batteries and supercapacitors.
Abstract: [Liu, Chang; Li, Feng; Ma, Lai-Peng; Cheng, Hui-Ming] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.;Cheng, HM (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China;cheng@imr.ac.cn
4,105 citations
TL;DR: A review of metal hydrides on properties including hydrogen-storage capacity, kinetics, cyclic behavior, toxicity, pressure and thermal response is presented in this article, where a group of Mg-based hydride stand as promising candidate for competitive hydrogen storage with reversible hydrogen capacity up to 7.6 W% for on-board applications.
2,890 citations