Institution
Wuhan University of Technology
Education•Wuhan, China•
About: Wuhan University of Technology is a education organization based out in Wuhan, China. It is known for research contribution in the topics: Microstructure & Photocatalysis. The organization has 40384 authors who have published 36724 publications receiving 575695 citations. The organization is also known as: WUT.
Topics: Microstructure, Photocatalysis, Ceramic, Adsorption, Sintering
Papers published on a yearly basis
Papers
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TL;DR: The enhanced pseudocapacitor performances benefit from the synergistic effect of the hierarchical nanostructure: faster ion diffusion and electron transport at electrode/electrolyte interface, and mitigation of the electrode destruction caused by ion insertion/deinsertion during charge-storage process.
Abstract: Pseudocapacitors have demonstrated an ability to deliver high energy and power densities. The main limitation is their poor cyclability and for this reason the architectural design of electrode materials has attracted considerable attention. Here we report the synthesis of hierarchical nanostructured material by growing Co(OH)2 nanoflakes onto MoO2 thin film. The electrode material exhibits a high capacitance of 800 F g–1 at 20 A g–1 with only 3% capacitance loss after 5000 cycles and high rate capability with increasing current density from 2 to 40 A g–1, which are better than those of individual component. The enhanced pseudocapacitor performances benefit from the synergistic effect of the hierarchical nanostructure: (1) faster ion diffusion and electron transport at electrode/electrolyte interface, and (2) mitigation of the electrode destruction caused by ion insertion/deinsertion during charge-storage process. This facile design and rational synthesis offers an effective strategy to enhance the electr...
175 citations
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TL;DR: The facile fabrication process, controllable distribution and optoelectronic applications make the OIP NWs promising building blocks for futureoptoelectronics, especially for low dimensional devices.
Abstract: Organolead halide perovskites are becoming intriguing materials applied in optoelectronics. In the present work, organolead iodide perovskite (OIP) nanowires (NWs) have been fabricated by a one step self-assembly method. The controllable NW distributions were implemented by a series of facile techniques: monolayer and small diameter NWs were prepared by precursor concentration tuning; NW patterning was achieved via selected area treatment assisted by a mask; NW alignment was implemented by modified evaporation-induced self-assembly (EISA). The synthesized multifunctional NWs were further applied in photodetectors (PDs) and solar cells as application demos. The PD performances have reached 1.32 AW−1 for responsivity, 2.5 × 1012 Jones for detectivity and 0.3 ms for response speed, superior to OIP films and other typical inorganic NW based PD performances. An energy conversion efficiency of ∼2.5% has been obtained for NW film based solar cells. The facile fabrication process, controllable distribution and optoelectronic applications make the OIP NWs promising building blocks for future optoelectronics, especially for low dimensional devices.
175 citations
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TL;DR: In this paper, a lead-free (1-x)BaTiO3-xBi(Mg 1/2Zr1/2)O3 ((1x)BT-xBMZ) ceramics with perovskite structure were synthesized by solid-state reaction methods.
Abstract: Lead-free (1-x)BaTiO3-xBi(Mg1/2Zr1/2)O3 ((1-x)BT-xBMZ) ceramics with perovskite structure were synthesized by solid-state reaction methods. (1-x)BT-xBMZ solid solution transforms from tetragonal (x≤0.04) to pseudocubic (x≥0.08) and exhibits a dispersive dielectric behavior with respect to frequency, showing typical relaxor characteristics with BMZ increasing. The optimal energy storage density of 1.25 J cm−3 and energy efficiency of >95% are obtained at x = 0.15, with maximum dielectric breakdown strength of 185 kV cm-1 at 200 μm thickness., The energy storage density and energy efficiency of 0.85BT-0.15BMZ ceramics maintain at about 0.8 J cm−3 and 89% at 150 kV cm-1 over temperature range of 25 °C∼150 °C, exhibiting good thermal stability. The pulse discharge capability of 0.85BT-0.15BMZ ceramics were measured under different electric fields, showing a short charge-discharge time of 1.3 μs. Therefore (1-x)BT-xBMZ solid solution with high energy density and efficiency, good temperature stability and fast discharge speed, is promising candidate for high power applications.
175 citations
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TL;DR: In this article, the use of recycled brick powder as replacement of mineral filler in asphalt mixture was investigated and a comparative study was carried out on the performance of two mixtures using recycled bricks powder and limestone filler.
175 citations
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TL;DR: It is proposed that C(60) molecules doped onto TiO(2) act as "electron acceptors" responsible for the efficient separation of photogenerated charge carriers and the enhancement of photocatalytic activity.
Abstract: In this work, fullerene modified TiO(2) nanocomposites (denoted as C(60)/TiO(2)) with low C(60) loadings (0-1.5 wt.%) have been prepared by a simple hydrothermal method using tetrabutylorthotitanate (TBOT, Ti(OC(4)H(9))(4)) as the titanium precursor. The as-prepared C(60)/TiO(2) nanocomposites were characterized by X-ray diffraction, transmission electron microscopy, UV-visible spectrophotometry, nitrogen adsorption, and X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy. The formation of hydroxyl radicals (˙OH) on the surface of UV-illuminated TiO(2) is probed by photoluminescence using terephthalic acid as a probe molecule. Our results have demonstrated that C(60) molecules can be dispersed as a monolayer onto bimodal mesoporous TiO(2)via covalent bonding. The photocatalytic oxidation rate of gas-phase acetone over C(60)/TiO(2) nanocomposites is greater than that over pure TiO(2), commercial Degussa P25 (P25) and C(60)-TiO(2) counterparts prepared by simple impregnating mixing. In particular, 0.5 wt.% C(60)/TiO(2) nanocomposites show the greatest photocatalytic activity with the rate constant k exceeding that of P25 by a factor of 3.3. Based on the results of the current study, we propose that C(60) molecules doped onto TiO(2) act as "electron acceptors" responsible for the efficient separation of photogenerated charge carriers and the enhancement of photocatalytic activity. The proposed mechanism for the observed photocatalytic performance of C(60)/TiO(2) nanocomposites is further corroborated by experiments on hydroxyl radical and transient photocurrent response.
174 citations
Authors
Showing all 40691 results
Name | H-index | Papers | Citations |
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Jiaguo Yu | 178 | 730 | 113300 |
Charles M. Lieber | 165 | 521 | 132811 |
Dongyuan Zhao | 160 | 872 | 106451 |
Yu Huang | 136 | 1492 | 89209 |
Han Zhang | 130 | 970 | 58863 |
Chao Zhang | 127 | 3119 | 84711 |
Bo Wang | 119 | 2905 | 84863 |
Jianjun Liu | 112 | 1040 | 71032 |
Hong Wang | 110 | 1633 | 51811 |
Jimmy C. Yu | 108 | 350 | 36736 |
Søren Nielsen | 105 | 806 | 45995 |
Liqiang Mai | 104 | 616 | 39558 |
Bei Cheng | 104 | 260 | 33672 |
Feng Li | 104 | 995 | 60692 |
Qi Li | 102 | 1563 | 46762 |