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Institution

Henan Normal University

EducationXinxiang, China
About: Henan Normal University is a education organization based out in Xinxiang, China. It is known for research contribution in the topics: Catalysis & Ionic liquid. The organization has 10863 authors who have published 11077 publications receiving 166773 citations.


Papers
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Journal ArticleDOI
TL;DR: Comparisons of the parsimony and Bayesian analyses and results of variable length bootstrap analysis indicates that the mitochondrial 16S rRNA gene should contain important character variation to recover well-supported phylogeny of cyprinid taxa whose divergences occurred within the recent 8 MY, but could not provide resolution power for deep phylogenies spanning 10-19 MYA.

67 citations

Journal ArticleDOI
30 May 2011-Talanta
TL;DR: The surface molecularly imprinted polymer presented here may find useful application as a solid phase absorbent to separate trace imidazole in environmental water samples and form the basis for the research program on the preparation and application of alkyl-imidazolium imprinted polymers.

67 citations

Journal ArticleDOI
TL;DR: In this paper, three dopant-free hole-transporting materials (HTMs) for perovskite solar cells were developed and used to successfully fabricate in mesoscopic TiO2/CH3NH3PbI3/HTM devices.
Abstract: This study reports three newly developed dopant-free hole-transporting materials (HTMs) for perovskite solar cells. The design is based on a quinacridone (QA) dye as the core with three different extended end-capping moieties, namely, acenaphthylene (ACE), triphenylamine (TPA) and diphenylamine (DPA), attached to the QA core. These HTMs were synthesized and used to successfully fabricate in mesoscopic TiO2/CH3NH3PbI3/HTM perovskite devices. Under AM 1.5G illumination at 100 mW cm−2, the devices achieved a maximum efficiency of 18.2% for ACE-QA-ACE, 16.6% for TPA-QA-TPA and 15.5% for DPA-QA-DPA without any additives, whereas reference devices with doped spiro-OMeTAD as the HTM achieved a PCE of 15.2%. Notably, the unencapsulated devices based on the novel dopant-free HTMs exhibited impressive stability in comparison with the devices based on doped spiro-OMeTAD under a relative humidity of 75% for 30 days. These linear symmetrical HTMs pave the way to a new class of organic hole-transporting materials for cost-efficient and large-area applications of printed perovskite solar cells.

67 citations

Journal ArticleDOI
TL;DR: These polymers have been structurally characterized by single-crystal X-ray diffraction, IR, PXRD, thermogravimetric (TGA), and elemental analysis, and the magnetic properties of polymers 2, 3, and 5 have been investigated through the measurement of their magnetic susceptibilities over the temperature range of 1.8-300 K.
Abstract: A series of novel one-dimensional (1-D) lanthanide coordination polymers (CPs), with the general formula {[Ln(bptcH)(H2O)2]·H2O}n (Ln = NdIII (1), EuIII (2), GdIII (3), TbIII (4), DyIII (5), HoIII (6), or ErIII (7)) have been synthesized by the solvothermal reactions of the corresponding lanthanide(III) picrates and 2,2′-bipyridine-3,3′,6,6′-tetracarboxylic acid (bptcH4). These polymers have been structurally characterized by single-crystal X-ray diffraction, IR, PXRD, thermogravimetric (TGA), and elemental analysis. Coordination polymers 1–7 are isostructural; they possess the same 3D supramolecular architectures and crystallize in triclinic space group P1. The frameworks constructed from dinuclear lanthanide building blocks exhibit one-dimensional double-stranded looplike chain architectures, in which the bptcH3– ions adopted hexadentate coordination modes. The EuIII (2) and TbIII (4) polymers exhibit characteristic photoluminescence in the visible region. The magnetic properties of polymers 2, 3, and ...

67 citations

Journal ArticleDOI
Abstract: Tin selenide (SnSe), a simple binary compound with low-cost, earth-abundant and eco-friendly elements, has aroused extensive interest in the thermoelectric community on account of its promising power generation. Herein, we report a much more advantageous SnS crystal with promising thermoelectric performance, as an alternative to SnSe. We found that the maximum ZT > 1.0 at 873 K and high device ZT (ZTdev) > 0.57 from 300 to 873 K can be achieved in hole-doped SnS crystals, projecting a conversion efficiency of ∼10.4%. We attribute the excellent performance of SnS to its remarkable electron and phonon band structures. SnS possesses multiple valence bands, which can be activated by hole doping through pushing the Fermi level deep into the valence band structure, and activating several Fermi pockets to produce enhanced Seebeck coefficients and high power factors ∼30 μW cm−1 K−2 at 300 K. Meanwhile, the anharmonic and anisotropic bonding of SnS leads to a low thermal conductivity, which ranges from 0.65 to 0.85 W m−1 K−1 at 873 K. Our results indicate that SnS is a promising thermoelectric material for energy conversion applications in low and moderate temperature ranges.

67 citations


Authors

Showing all 10953 results

NameH-indexPapersCitations
Hua Zhang1631503116769
Jie Wu112153756708
Peng Wang108167254529
Lei Liu98204151163
Lixia Zhang9335147817
Zhongwei Chen9251133700
Wei Chen9093835799
Zhiguo Ding8881735162
Xiaolong Wang8196631455
Junhua Li7748021626
Jiujun Zhang7627639624
Lei Liao7527618815
Peng Xu75115125005
Wei Wang75116723558
Tony D. James7343521605
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202349
2022173
20211,281
20201,042
2019987
2018818