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Institution

Beijing University of Technology

EducationBeijing, Beijing, China
About: Beijing University of Technology is a education organization based out in Beijing, Beijing, China. It is known for research contribution in the topics: Microstructure & Laser. The organization has 31929 authors who have published 31987 publications receiving 352112 citations. The organization is also known as: Běijīng Gōngyè Dàxué & Beijing Polytechnic University.


Papers
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Journal ArticleDOI
TL;DR: In this paper, three kinds of spinel ferrite nanocrystals, MFe2O4 (M = Co, Ni, and Mn), are synthesized using colloid mill and hydrothermal method.
Abstract: Three kinds of spinel ferrite nanocrystals, MFe2O4 (M = Co, Ni, and Mn), are synthesized using colloid mill and hydrothermal method. During the synthesis process, a rapid mixing and reduction of cations with sodium borohydride (NaBH4) take place in a colloid mill then through a hydrothermal reaction, a slow oxidation and structural transformation of the spinel ferrite nanocrystals occur. The phase purity and crystal lattice parameters are estimated by X-ray diffraction studies. Scanning electron microscopy and transmission electron microscopy images show the morphology and particle size of the as-synthesized ferrite nanocrystals. Raman spectrum reveals active phonon modes at room temperature, and a shifting of the modes implies cation redistribution in the tetrahedral and octahedral sites. Magnetic measurements show that all the obtained samples exhibit higher saturation magnetization (Ms). Meanwhile, experiments demonstrate that the hydrothermal reaction time has significant effects on microstructure, mo...

91 citations

Journal ArticleDOI
TL;DR: In this article, a novel process combined simultaneous partial nitrification-anammox (SPNA) with modified denitrifying phosphorus removal (DPR) in two sequencing batch reactors (terms as SPNA-SBR and mDPR-sBR) was proposed for treating ammonia (NH4+-N) and domestic wastewaters.

91 citations

Journal ArticleDOI
TL;DR: In this article, the potential of using the waste cooking oil (WCO) based bio-oil as a modifier for petroleum based neat asphalt binder and Styrene-Butadiene-Styrene (SBS) modified binder by means of chemical and rheological approaches was investigated.

91 citations

Journal ArticleDOI
TL;DR: The CVs analysis revealed that the ANTs have both diffusive lithium storage in the bulk and pseudocapacitive lithium storage at the surface (also called interfacial lithium storage), and the pseudOCapac positive lithium storage dominates the total capacity when the scan rates are above 1 mV s(-1).
Abstract: Anatase TiO2 nanosheets (ATNs) are successfully prepared by a biomimetic layer-by-layer titania mineralization approach, and the electrochemical performance of the ATNs as negative electrode for lithium-ion batteries is investigated by the galvanostatic chronopotentiometry and cyclic voltammetry. A high initial discharge capacity (311 mA h g–1) and initial Coulombic efficiency (81.7%) were obtained for ATNs, and capacities of 252, 202, 186, 158, 136, and 119 mA h g–1 were obtained at 0.2, 1, 5, 10, 20, and 30 C, respectively. Particularly, the ATNs can still maintains a capacity of 108 mA h g–1 after 4000 cycles at 30 C (only a capacity loss of 10%), which indicated a superior rate capabilities and cyclability. The CVs analysis revealed that the ANTs have both diffusive lithium storage in the bulk and pseudocapacitive lithium storage at the surface (also called interfacial lithium storage), and the pseudocapacitive lithium storage dominates the total capacity when the scan rates are above 1 mV s–1. The fa...

91 citations

Journal ArticleDOI
TL;DR: In this article, P25 TiO2 is employed as a model photocatalyst and alcohol as a sacrificial agent, and both Nessler's reagent and cation exchange chromatography are employed as ammonia detection methods.
Abstract: Photocatalytic ammonia synthesis is another important reaction to mimic natural nitrogen fixation, which has attracted more and more attention. In recent reports, sacrificial agents are often used to promote charge separation, and high-activity photocatalysts are discovered by using Nessler’s reagent method as a detection technique of ammonia production. However, there is an open question on the rationality and accuracy of the ammonia production amount in the presence of the sacrificial agent and Nessler’s reagent detection method. In this report, P25 TiO2 is employed as a model photocatalyst and alcohol as sacrificial agent, and both Nessler’s reagent and cation exchange chromatography are employed as ammonia detection methods. The different ammonia production amount was found by the different detection method. HPLC and 1H NMR results indicate that carbonyl compounds (formaldehyde, acetaldehyde, and acetone) are produced in the reaction. When the carbonyl compound was added to the ammonia standard soluti...

91 citations


Authors

Showing all 32228 results

NameH-indexPapersCitations
Zhong Lin Wang2452529259003
Pulickel M. Ajayan1761223136241
James M. Tour14385991364
Dacheng Tao133136268263
Lei Zhang130231286950
Hong-Cai Zhou11448966320
Xiaodong Li104130049024
Lin Li104202761709
Ming Li103166962672
Wenjun Zhang9697638530
Lianzhou Wang9559631438
Miroslav Krstic9595542886
Zhiguo Yuan9363328645
Xiang Gao92135942047
Xiao-yan Li8552831861
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023124
2022611
20213,573
20203,341
20193,075
20182,523