Article
Chemistry, Multidisciplinary
Lucy J. T. Metzroth, Elisa M. Miller, Andrew G. Norman, Sadegh Yazdi, Gerard Michael Carroll
Summary: Exploiting the high surface-area-to-volume ratio of nanomaterials to store energy in the form of electrochemical alloys shows promise, but nanoscale-specific properties affect the absorption and desorption of energy carrying equivalents. Adding an ultrathin platinum shell to the surface of palladium can greatly enhance hydrogen absorption rates and facilitate diffusion across the entire surface.
Review
Chemistry, Physical
Haifang Shen, Hao Li, Zhensheng Yang, Chunli Li
Summary: The hydrogen spillover effect (HSPE) plays a significant role in heterogeneous catalysis and hydrogen storage, influencing the properties and performance of porous nanomaterials as well as multiphase catalytic reactions. Recent advancements in characterization techniques have provided valuable insights into understanding the HSPE.
GREEN ENERGY & ENVIRONMENT
(2022)
Review
Chemistry, Physical
Haifang Shen, Hao Li, Zhensheng Yang, Chunli Li
Summary: The hydrogen spillover effect (HSPE) is an important interfacial phenomenon in heterogeneous catalysis and hydrogen storage, influencing the performance of porous nanomaterials. Advanced characterization techniques have improved our understanding of the HSPE, leading to insights into its impact on hydrogen storage performance and catalysis. This review discusses the potential, opportunities, and challenges in the research area of hydrogen spillover.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Energy & Fuels
Foroozan Samimi, Maryam Ghiyasiyan-Arani, Masoud Salavati-Niasari
Summary: This research focuses on the improvement of electrochemical hydrogen storage performance by outlining a novel nanocomposite (Ca2Mn3O8/CaMn3O6/MMT). The addition of Ca2Mn3O8/CaMn3O6 nanoparticles in the K10 MMT matrix significantly enhances the hydrogen storage capacity. The optimized composition of 10% nanoparticles in the Ca2Mn3O8/CaMn3O6/MMT nanocomposites exhibits a synergistic effect of spillover, redox, and physisorption mechanisms, making it a promising material for hydrogen storage systems.
Article
Chemistry, Multidisciplinary
Bassim Arkook, Ahmed Alshahrie, Numan Salah, Mohammad Aslam, Saeed Aissan, Ashwaq Al-Ojeery, Ahmed Al-Ghamdi, Akihisa Inoue, El-Sayed Shalaan
Summary: A composite film of graphene and fibrous multiwall carbon nanotubes was prepared by plasma-enhanced chemical vapor deposition, with the addition of PdMg alloy nanoparticles leading to improved hydrogen storage capacity and absorption-desorption kinetics. The fibrous structure of the MWCNTs alongside the graphene sheets provided a large active region for hydrogen reaction, while the catalytic nature of Pd and high absorption capacity of Mg nanoparticles enhanced the reaction kinetics and hydrogen content.
Review
Engineering, Environmental
Mengzhu Li, Weinan Yin, Junan Pan, Yanwei Zhu, Ning Sun, Xinyu Zhang, Yingtong Wan, Zhongzhong Luo, Lanhua Yi, Longlu Wang
Summary: Hydrogen spillover, a phenomenon of active species migration, has received considerable attention in recent years. It not only participates in catalytic reactions as reactants, but also induces support to form defects or phase transitions, thereby adjusting the energy band and improving catalytic performance. As a result, hydrogen spillover has broad potential applications in heterogeneous catalysis and hydrogen production. However, there is still a lack of clear summary on the reaction mechanism and important applications of hydrogen spillover. This review focuses on the recent progress of hydrogen spillover, including different types, structural models, and applications, aiming to provide new ideas for the design and application of hydrogen spillover.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Emmanuel Boateng, Antony R. Thiruppathi, Chi-Kai Hung, Darren Chow, Deepak Sridhar, Aicheng Chen
Summary: Graphene and its derivatives have the potential to be solid-state candidates for next-generation energy and hydrogen storage technologies. However, materials that meet all targets set by the US Department of Energy have not yet been identified. This review provides an overview of recent developments in functionalized graphene-based nanomaterials for energy and hydrogen storage systems. Various synthetic approaches, effects of functionalization strategies, and recent advances in energy applications are discussed.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Alejandra Granja-DelRio, Maite Alducin, J. Inaki Juaristi, Maria J. Lopez, Julio A. Alonso
Summary: Experimental evidence shows that doping porous carbons with metal nanoparticles, such as palladium, enhances the hydrogen storage capacity. However, simulations reveal that high activation barriers prevent hydrogen spillover from anchored Pd clusters to the carbon substrate, as hydrogen atoms prefer to absorb within the Pd cluster rather than migrate to the carbon substrate.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Mohanapriya Subramani, Deepak Arumugam, Shankar Ramasamy
Summary: In this study, the quantum chemical method was used to investigate the hydrogen storage behavior on Pt (n = 1-4) cluster decorated C48H16 sheet. The results showed that the Pt (n = 1-4) clusters were strongly bonded to the surface of C48H16 sheet, and the charge transfer from Pt (n = 1-4) to C48H16 created an empty orbital for hydrogen adsorption. Molecular hydrogen was initially adsorbed through Kubas interaction, and then dissociative hydrogen adsorption occurred. External electric fields could enhance or weaken the adsorption ability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Satoshi Misaki, Hiroko Ariga-Miwa, Takashi U. Ito, Takefumi Yoshida, Shingo Hasegawa, Yukina Nakamura, Shunta Tokutake, Moe Takabatake, Koichiro Shimomura, Wang-Jae Chun, Yuichi Manaka, Ken Motokura
Summary: This study demonstrates the efficient catalytic activity of Pd nanoparticles on the outer surface of H-ZSM-5 for the direct alkylation of benzenes with alkanes. The reaction proceeds through the activation of alkanes on the acid sites inside the zeolite pores, and the generated hydrogen atoms play a role in accelerating the reaction.
Review
Chemistry, Multidisciplinary
Hwapyong Kim, Ayeong Choe, Seung Beom Ha, Ghulam Mustafa Narejo, Sung Wook Koo, Ji Su Han, Wookjin Chung, Jae-Yup Kim, Jiwoong Yang, Su-Il In
Summary: This review mainly discusses the application of quantum dot-sensitized semiconductors in photoelectrochemical hydrogen production, focusing on the advancements in improving long-term stability through the use of cocatalysts and passivation layers. The working principle of PEC cells, important configurations, and equations for assessing PEC performance are also reviewed.
Article
Chemistry, Physical
Jeremy Audevard, Javier Navarro-Ruiz, Vincent Bernardin, Regis Philippe, Anna Corrias, Yann Tison, Alain Favre-Reguillon, Iker Del Rosal, Iann C. Gerber, Philippe Serp
Summary: Achieving high selectivity, conversion, and rate in the industrially important selective hydrogenation of a,b-unsaturated aldehydes is challenging. Previous approaches have sacrificed activity for selectivity towards unsaturated alcohol or saturated aldehyde. However, this study demonstrates that combining Ni nanoparticles (NiNP) and Ru single atoms (RuSA) on CNTs allows for improved hydrocinnamaldehyde selectivity without compromising activity. The resulting catalyst shows 94% selectivity at 99% conversion and has good stability in continuous flow conditions. Insights into the cooperative catalysis mechanism between NiNP and RuSA were obtained through density functional theory calculations.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Anant Prakash Pandey, M. A. Shaz, V. Sekkar, R. S. Tiwari
Summary: Enhanced hydrogen sorption over activated iron-doped carbon aerogel (CA) is studied. Iron-doped carbon aerogel was prepared via sol-gel polymerization and the presence of nano iron led to carbon nanotube formation. The hydrogen storage capacities of 1%, 5%, and 10% Fe-doped CAs were 1.47 wt%, 1.38 wt%, and 1.28 wt%, respectively. Activation of CAs significantly increased the storage capacity (approximately 3.80 wt%) due to the presence of carbon nanotubes and increased microporosity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Rui Shi, Haoxing Yan, Jiguang Zhang, Haiguang Gao, Yunfeng Zhu, Yana Liu, Xiaohui Hu, Yao Zhang, Liquan Li
Summary: A simple, cost-effective method of water treatment is proposed to produce highly reactive and air-stable bulk Mg-Ni-based hydrides in this study. The method can significantly decrease the dehydrogenation temperature and allow the hydrides to be stored under ambient conditions without losing activity, providing an alternative approach to design low-cost, highly active metal hydrides.
Review
Chemistry, Multidisciplinary
Yanyan Geng, Hao Li
Summary: This Review summarizes the research on hydrogen spillover in biomass refining and discusses the regulation mechanism of hydrogen spillover. By regulating different active center sites on catalyst supports, such as metal sites, acid sites, surface functional groups, and defective sites, the catalytic activity, selectivity, and stability can be improved.
