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Yuhui Hou

Bio: Yuhui Hou is an academic researcher from University of Bern. The author has contributed to research in topics: Catalysis & Electrolysis. The author has an hindex of 10, co-authored 20 publications receiving 401 citations. Previous affiliations of Yuhui Hou include Xiamen University & Hokkaido University.

Papers
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Journal ArticleDOI
TL;DR: In this paper, a facile synthetic method that yields Ag@CoxP core-shell-type heterogeneous nanostructures with excellent oxygen evolution reaction (OER) activity was presented.
Abstract: We present a facile synthetic method that yields Ag@CoxP core–shell-type heterogeneous nanostructures with excellent oxygen evolution reaction (OER) activity. This nanocatalyst can deliver a current density of 10 mA/cm2 at a small overpotential of 310 mV and exhibits high catalytic stability. Additionally, the catalytic activity of Ag@CoxP is 8 times higher than that of the Co2P nanoparticles, owing primarily to the strong electronic interaction between the Ag core and the CoxP shell.

135 citations

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TL;DR: In this article, the authors synthesized rod-and plate-shaped La2O2CO3 samples with different morphologies (rod and plate-shapes) at the nanometer scale and observed that one of the rod-shaped samples exhibited the best catalytic properties among the investigated samples in the oxidative coupling of methane (OCM) at low temperatures (420-500 °C); in addition, its specific activity was 20 times greater than that of any of the other rodshaped samples.
Abstract: Methane is the main component of natural gas and shale gas. It is chemically stable, and its activation often requires high temperatures, which lead to its extensive transformation into undesirable products such as CO and CO2. Thus, the development of efficient catalysts for the selective transformation of methane represents a substantial challenge. In this work, we synthesized La2O2CO3 samples with different morphologies (rod- and plate-shapes) at the nanometer scale. We observed that one of the rod-shaped samples exhibited the best catalytic properties among the investigated samples in the oxidative coupling of methane (OCM) at low temperatures (420–500 °C); in addition, its specific activity was 20 times greater than that of any of the other rod-shaped samples. This difference corresponded to the O2-TPD results and was attributed to the crystallographic facets exposed. Among the exposed facets, the (110), (120), and (210) facets had relatively loose atomic configurations that increased the conversion...

122 citations

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TL;DR: Among the electrolyzers under development for CO2 electroreduction at practical reaction rates, gas-fed approaches that use gas diffusion electrodes (GDEs) as cathodes are the most promising.
Abstract: Among the electrolyzers under development for CO2 electroreduction at practical reaction rates, gas-fed approaches that use gas diffusion electrodes (GDEs) as cathodes are the most promising. Howev...

46 citations

Journal ArticleDOI
TL;DR: It is demonstrated that the transparent TiO2/Ce xerogel coating can diminish surface deterioration induced by UV light and preserve the natural appearance of the highly abundant biomaterial wood.
Abstract: Titanium dioxide is widely used in sunscreens because of its strong ultraviolet (UV) light absorbing capabilities and its resistance to discoloration under UV exposure. However, when deposited as a thin film, the high refractive index of titanium dioxide typically results in whiteness and opacity, which limits the use of titanium dioxide for material surfaces, for which long-term natural appearance is of high relevance. Since the whitish appearance is due to the strong light scattering and reflection on the interface of oxide particles and air, one can increase the transparency of TiO2 coatings by forming a continuous TiO2 layer. The purpose of the present article is 2-fold. First, we show that, in the presence of cerium ammonium nitrate, titanium dioxide can be turned from a white powder into a TiO2/Ce xerogel via a facile bottom-up fabrication process. Second, we demonstrate that the transparent TiO2/Ce xerogel can diminish surface deterioration induced by UV light and preserve the natural appearance of...

41 citations

Journal ArticleDOI
Wen-Sheng Xia1, Yuhui Hou1, Gang Chang1, Weizheng Weng1, Guo-Bin Han1, Huilin Wan1 
TL;DR: In this article, the authors proposed a method to improve the performance of the Changjiang Scholars and Innovative Research Team in University of Changjiang in China by using artificial neural networks.

35 citations


Cited by
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TL;DR: In this article, some of the most promising alternatives are compared with the conventional steam cracking (SC) of hydrocarbons, and the major bottlenecks of each of the competing processes are highlighted.

445 citations

Journal ArticleDOI
TL;DR: The experimental results demonstrate that the NiCo@NiCoO2 /C PMRAs as electrocatalysts exhibit high catalytic activity, low overpotential, and high stability for OER in alkaline media.
Abstract: The study of cost-efficient and high-performance electrocatalysts for oxygen evolution reaction (OER) has attracted much attention. Here, porous microrod arrays constructed by carbon-confined NiCo@NiCoO2 core@shell nanoparticles (NiCo@NiCoO2 /C PMRAs) are fabricated by the reductive carbonization of bimetallic (Ni, Co) metal-organic framework microrod arrays (denoted as NiCo-MOF MRAs) and subsequent controlled oxidative calcination. They successfully combine the desired merits including large specific surface areas, high conductivity, and multiple electrocatalytic active sites for OER. In addition, the oxygen vacancies in NiCo@NiCoO2 /C PMRAs significantly improve the conductivity of NiCoO2 and accelerate the kinetics of OER. The above advantages obviously enhance the electrocatalytic performance of NiCo@NiCoO2 /C PMRAs. The experimental results demonstrate that the NiCo@NiCoO2 /C PMRAs as electrocatalysts exhibit high catalytic activity, low overpotential, and high stability for OER in alkaline media. The strategy reported will open up a new route for the fabrication of porous bimetallic composite electrocatalysts derived from MOFs with controllable morphology for electrochemical energy conversion devices.

355 citations

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TL;DR: In this paper, the authors summarize new progress in the development of metal nanoparticle (NP) catalysts, which are categorized into monometallic and heterometallic catalysts with excellent activity and high recyclability for different AB dehydrogenation pathways.
Abstract: Ammonia borane (AB), having a high hydrogen density of 19.6 wt %, has attracted much attention as a promising chemical hydrogen storage material. In the past few years, a number of highly active metal nanoparticle (NP) catalysts, which are easy to handle and separate, have been developed for AB dehydrogenation. In this Perspective, we summarize new progress in the development of metal NP catalysts, which are categorized into monometallic and heterometallic catalysts, with excellent activity and high recyclability for different AB dehydrogenation pathways, including solvolysis (hydrolysis and methanolysis) in protic solvents and dehydrocoupling in nonprotic solvents, and we survey the corresponding methods for the regeneration of AB. Moreover, the merits and drawbacks of solvolysis and dehydrocoupling are discussed.

344 citations

Journal ArticleDOI
Xinyu Li1, Di Li1, Hao Tian1, Liang Zeng1, Zhi-Jian Zhao1, Jinlong Gong1 
TL;DR: In this paper, a Ni/La2O3 catalyst using La2O2CO3 nanorod as a support precursor was proposed for dry reforming of methane (DRM).
Abstract: This paper describes the design of a Ni/La2O3 catalyst using La2O2CO3 nanorod as a support precursor (denoted as Ni/La2O3-LOC) via a wet impregnation method for dry reforming of methane (DRM). The results showed that La2O3 derived from the La2O2CO3 precursor maintained its initial morphology upon thermal treatment and could highly disperse Ni particles on it. Additionally, the nanorod-shaped support could provide more medium-strength basic sites to facilitate CO2 adsorption and activation on its surface. Consequently, the Ni/La2O3-LOC catalyst reached 70% of CH4 conversion and 75% of CO2 conversion at 700 °C after 50 h DRM reaction with a H2/CO ratio of 0.87. The enhanced metal-support interaction restricted the sintering of nickel particles under harsh reaction conditions. Coke evolution on the catalysts was also investigated to understand coke formation mechanism and the role of La2O2CO3 in coke elimination. It has been found that nickel dispersion can affect distribution of coke and La2O2CO3 on the surface of catalyst, both of which have a close relation with catalytic performance.

338 citations

Journal ArticleDOI
TL;DR: Carbon-based materials are widely employed as metal-free catalysts or supports in catalysis, energy, and ecological applications because of their interesting properties as mentioned in this paper, and their high surfa...
Abstract: Carbon-based materials are widely employed as metal-free catalysts or supports in catalysis, energy, and ecological applications because of their interesting properties. Generally, their high surfa...

335 citations