H
Hongjun Niu
Researcher at University of Liverpool
Publications - 52
Citations - 4627
Hongjun Niu is an academic researcher from University of Liverpool. The author has contributed to research in topics: Perovskite (structure) & Oxide. The author has an hindex of 21, co-authored 49 publications receiving 4047 citations. Previous affiliations of Hongjun Niu include Durham University.
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Journal ArticleDOI
Conjugated Microporous Poly(aryleneethynylene) Networks
Jia-Xing Jiang,Fabing Su,Abbie Trewin,Colin D. Wood,Neil L. Campbell,Hongjun Niu,Calum Dickinson,Alexey Y. Ganin,Matthew J. Rosseinsky,Yaroslav Z. Khimyak,Andrew I. Cooper +10 more
TL;DR: Rigid wiry nets: Conjugated microporous polymer networks are formed by Sonogashira–Hagihara coupling, and the micropore size and surface area can be controlled by varying the length of the phenyleneethynylene struts.
Journal ArticleDOI
Synthetic Control of the Pore Dimension and Surface Area in Conjugated Microporous Polymer and Copolymer Networks
Jia-Xing Jiang,Fabing Su,Abbie Trewin,Colin D. Wood,Hongjun Niu,James T. A. Jones,Yaroslav Z. Khimyak,Andrew I. Cooper +7 more
TL;DR: A series of rigid microporous poly(aryleneethynylene) (PAE) networks was synthesized by Sonogashira-Hagihara coupling chemistry and it was shown that physical properties such as micropore size, surface area, and hydrogen uptake could be controlled in a "quantized" fashion by varying the monomer strut length.
Journal ArticleDOI
Hydrogen Storage in Microporous Hypercrosslinked Organic Polymer Networks
Colin D. Wood,Bien Tan,Abbie Trewin,Hongjun Niu,Darren Bradshaw,Matthew J. Rosseinsky,Yaroslav Z. Khimyak,Neil L. Campbell,Ralph Kirk,and Ev Stöckel,Andrew I. Cooper +10 more
TL;DR: In this article, a series of hypercrosslinked polymer networks has been synthesized by self-condensation of bischloromethyl monomers such as dichloroxylene (DCX), 4,4‘-bis(chlorometHyl)-1,1'biphenyl (BCMBP), and 9,10-bis (chloromethemyl)anthracene (BCMA), and these materials are predominantly microporous and exhibit Brunauer−Emmett−Teller (BET) surface areas of up to 1904 m2
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Conjugated microporous poly(phenylene butadiynylene)s.
Jia-Xing Jiang,Fabing Su,Hongjun Niu,Colin D. Wood,Neil L. Campbell,Yaroslav Z. Khimyak,Andrew I. Cooper +6 more
TL;DR: High surface area porous poly(phenylene butadiynylene) networks were obtained (BET surface area up to 842 m(2) g(-1)) by the palladium-catalyzed homocoupling of 1,3,5-triethynylbenzene and 1,4-diethynyl benzene.
Journal ArticleDOI
Interstitial oxide ion conductivity in the layered tetrahedral network melilite structure
Xiaojun Kuang,Mark Green,Mark Green,Hongjun Niu,Paweł Zajdel,Paweł Zajdel,Calum Dickinson,John B. Claridge,Laurent Jantsky,Matthew J. Rosseinsky +9 more
TL;DR: This work shows how the two-dimensionally connected tetrahedral gallium oxide network in the melilite structure stabilizes oxygen interstitials by local relaxation around them, affording an oxide ion conductivity of 0.02-0.1 S cm(-1) over the 600-900 degrees C temperature range.