WorldCat Identities

Yu, Guiqin

Overview
Works: 7 works in 8 publications in 2 languages and 10 library holdings
Roles: Contributor, Author
Publication Timeline
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Most widely held works by Guiqin Yu
Targeted Deletion of PTEN in Kisspeptin Cells Results in Brain Region- and Sex-Specific Effects on Kisspeptin Expression and Gonadotropin Release by Ariel L Negrón( )

1 edition published in 2020 in English and held by 2 WorldCat member libraries worldwide

Zui xin shi yong cai wu kuai ji wen da( Book )

2 editions published in 1993 in Chinese and held by 2 WorldCat member libraries worldwide

Pd-doped Ni nanoparticle-modified N-doped carbon nanocatalyst with high Pd atom utilization for the transfer hydrogenation of nitroarenes1( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Abstract : Highly dispersed PdNi NP modified N-doped mesoporous carbon nanocatalyst was facilely prepared for the transfer hydrogenation of nitroarenes. Abstract : Palladium (Pd)-based catalysts with maximum utilization of the Pd atoms are attractive for hydrogenation reactions and conserving Pd resources. Herein, the highly dispersed Ni nanoparticle (NP)-modified mesoporous N-doped carbon (Ni/mCN) was successfully prepared by pyrolyzing a mixture of polyacrylonitrile, melamine and Ni(NO3)2 ·6H2 O. Then, the resulting Ni/mCN material with highly dispersed metallic Ni NPs was treated with Pd(AcO)2, and Pd 2+ was spontaneously reduced to metallic Pd by the Ni NPs, affording the PdNi NP-based catalyst (PdNi/mCN). The spontaneous reduction process deposits most of the Pd atoms on the surface of the Ni NPs, thus allowing for the maximum utilization of the noble metal Pd. The prepared mesoporous N-doped carbon support can not only provide more surface area to adsorb reaction substrates, but also enhances the accessibility of the active sites of PdNi NPs. The prepared PdNi/mCN nanocatalyst shows a very high catalytic activity for the transfer hydrogenation of nitroarenes using formic acid as the reductant under ambient conditions in aqueous solution, as compared to other Pd-based catalysts, probably because of the highly dispersed PdNi NPs and the maximum utilization of the Pd atoms, as well as the superior structure of mCN. Moreover, the PdNi/mCN nanocatalyst exhibits excellent recyclability and reusability, and the catalytic activity does not obviously decrease after ten reaction cycles. Therefore, we believe that this study should open a new frontier in the preparation of porous N-doped carbon-supported catalysts with maximum utilization of the noble metals for green and sustainable catalysis
Pt coated Co nanoparticles supported on N-doped mesoporous carbon as highly efficient, magnetically recyclable and reusable catalyst for hydrogen generation from ammonia borane( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Abstract: Ammonia borane (NH3 BH3, AB) is considered as an excellent chemical material for the hydrogen storage attribute to its high hydrogen storage capacity. However, developing highly efficient catalysts for continuous hydrogen generation from AB is still a challenge for the future fuel cell applications. Initially, a facile one-pot carbonization method was used for fabrication cobalt nanoparticles (Co NPs) doped fluffy N-doped mesoporous carbon (Co/mCN). Further, the Pt@Co/mCN nanocatalyst was prepared through a facile spontaneous displacement reaction by using the Co/mCN material and H2 PtCl6 as the starting materials. Here, the metallic Pt only covered on the surface of the Co NPs in the view of Pt saving. The Pt@Co/mCN nanocatalyst was used in the catalytic hydrogen generation from AB and showed excellent catalytic activity and reusability. The superior catalytic activity of the Pt@Co/mCN nanocatalyst is probably due to the isolated Pt atoms on the surface of the Co NPs and the highly dispersed Pt@Co NPs on the surface of the fluffy mCN support. Graphical abstract: The Pt@Co/mCN nanocatalyst was prepared through a facile method and used in the catalytic hydrogen generation from AB and showed excellent catalytic activity and reusability. Highlights: Co NPs decorated N-doped mesoporous carbon was prepared by a simple one-pot pyrolysis method. Metallic Pt was covered on the surface of the Co NPs through a replacement reaction. Pt@Co/mCN showed excellent activity in the catalytic hydrogen release from ammonia borane
Nong ye qi ye jing ying guan li xue by Guiqin Yu( )

1 edition published in 1993 in Chinese and held by 1 WorldCat member library worldwide

Gong yong dian wang luo ji she bei( Book )

1 edition published in 2005 in Chinese and held by 1 WorldCat member library worldwide

Ben shu zhu yao nei rong bao gua : gong yong dian wang luo de ji ben zhi shi, gong yong dian wang luo de ji ben ji suan, gong yong dian wang luo de dian ya diao zheng, dian hu ji jiao tou de ji ben zhi shi, di ya kai guan dian qi, rong duan qi, gao ya kai guan dian qi, dian qi she bei xuan ze, yong dian she bei, gong pei dian suo de jie xian fang shi ji cheng tao pei dian zhuang zhi, bing fu lu le xiang guan she bei de ji shu can shu ji te xing
 
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Audience level: 0.92 (from 0.82 for Nong ye qi ... to 0.97 for Zui xin sh ...)

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