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10 results on '"Zhang, Wenqin"'

1. Air purification behavior of magnesium oxychloride cement combined with Ag/AgBr particle under visible light

Author

Gao, Yining, Liu, Peng, Wang, Fazhou, Yang, Lu, Zhang, Wenqin, Yang, Jin, and Liu, Yunpeng

Subjects
Bromine compounds -- Research -- Properties, Textiles -- Usage, Magnesium compounds -- Research -- Properties, Nanoparticles, Pollutants, Silver, Catalysis, Adsorption, Business, Construction and materials industries
Abstract

A dynamic adsorption-migration-photocatalysis-desorption occur on MOC surface for HCHO degradation. The phase 5 in MOC materials adsorb pollutant gas. HCHO molecules migrated to active sites in the catalyst along nano-needle [...]

Published
2019
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2. Superhydrophobic behavior of magnesium oxychloride cement surface with a dual-level fractal structure

Author

Gao, Yining, Wang, Fazhou, Liu, Peng, Zhang, Wenqin, and Yang, Lu

Subjects
Magnesium oxide -- Research -- Mechanical properties, Drag (Fluid dynamics) -- Research, Water, Backup software, Business, Construction and materials industries
Abstract

ABSTRACT The poor water-resistance mechanism of magnesium oxychloride cement (MOC) is well understood in the past decades due to cations and anions in the hydration products. It is difficult to [...]

Published
2019
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3. Improving the fluid transport properties of heat-cured concrete by internal curing

Author

Nie, Shuai, Zhang, Wenqin, Hu, Shuguang, Liu, Zhichao, and Wang, Fazhou

Subjects
Concretes -- Thermal properties, Concrete curing -- Analysis, Business, Construction and materials industries
Abstract

ABSTRACT Heat curing accelerates cement hydration, leading to a coarse pore structure. This undermines the transport properties of concrete, which is essential in evaluating concrete durability. In this study, effect [...]

Published
2018
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4. Ti[O.sub.2]/porous cementitious composites: influences of porosities and Ti[O.sub.2] loading levels on photocatalytic degradation of gaseous benzene

Author

Yang, Lu, Shu, Fazhou Wang. Chang, Liu, Peng, Zhang, Wenqin, and Hu, Shuguang

Subjects
Porosity -- Analysis, Benzene -- Analysis, Cements (Building materials) -- Properties -- Analysis, Business, Construction and materials industries
Abstract

ABSTRACT To improve the photocatalytic performance and utilization of Ti[O.sub.2] particles in cementitious materials, this work investigated and differentiated the influences of cement substrate pore structure and Ti[O.sub.2] particles loading [...]

Published
2017
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5. Enhanced photocatalytic efficiency and long-term performance of Ti[O.sub.2] in cementitious materials by activated zeolite fly ash bead carrier

Author

Yang, Lu, Wang, Fazhou, Du, Dan, Liu, Peng, Zhang, Wenqin, and Hu, Shuguang

Subjects
Zeolites -- Chemical properties -- Analysis, Fly ash -- Chemical properties -- Analysis, Cement -- Chemical properties -- Analysis, Business, Construction and materials industries
Abstract

ABSTRACT This study investigated the strategy of using zeolite fly ash bead (ZFAB) as a carrier of Ti[O.sub.2] photocatalyst to improve the photocatalytic efficiency and long-term performance of photocatalytic cementitious [...]

Published
2016
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6. Photocatalytic activity of Portland cement loaded with 3D hierarchical [Bi.sub.2]W[O.sub.6] microspheres under visible light

Author

Liu, Peng, Gao, Yining, Wang, Fazhou, Zhang, Wenqin, Yang, Lu, Yang, Jin, and Liu, Yunpeng

Subjects
Portland cement -- Chemical properties -- Thermal properties -- Analysis, Hydration (Chemistry) -- Analysis, Microspheres -- Usage -- Analysis, Business, Construction and materials industries
Abstract

ABSTRACT In this work, photocatalytic cement was prepared by loading [Bi.sub.2]W[O.sub.6] microspheres with Portland cement. 3D hierarchical [Bi.sub.2]W[O.sub.6] microspheres were synthesized by self-assembly of 2D nanosheets and nanoplates firstly. Interestingly, [...]

Published
2016
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7. Photolysis of ((3-(trimethylsilyl)propoxy)phenyl)phenyliodonium salts in the presence of 1-naphthol and 1-methoxynaphthalene

Author

Gu, Haiyan, Zhang, Wenqin, Feng, Kesheng, and Neckers, Douglas C.

Subjects
Organic compounds -- Research, Photochemical research -- Analysis, Polymerization -- Analysis, Oxidation-reduction reaction -- Analysis, Biological sciences, Chemistry
Abstract

Research shows that direct photolysis of the iodonium salts, in the presence of 1-methoxynaphthalene, produce three phenylated methoxynaphthalene isomers. Data indicate that the products are radical coupling products derived from the phenyl radical and 1-methoxynaphthalene cation radical.

Published
2000

8. Photochemical properties of 4-benzoylbenzylammonium borates

Author

Zhang, Wenqin, Feng, Kesheng, Wu, Xiaosong, Martin, Dustin, and Neckers, Douglas C.

Subjects
Borates -- Research, Photochemistry -- Analysis, Amines -- Research, Radicals (Chemistry) -- Research, Biological sciences, Chemistry
Abstract

Radical trapping experiments were performed on several new 4-benzoylbenzylammonium borates to investigate their photochemical properties. Results showed that alpha-aminoalkyl radical and other radicals can be successfully formed from 4-benzoylbenzylammonium tetraphenylborates, suggesting that the alpha-aminoalkyl radical in not the only initiating species. However, the radical was found to be the most active initiating specie.

Published
1999

9. The simple cubic structure of ruthenium clusters

Author

Zhang, Wenqin, Zhao, Haitao, and Wang, Lichang

Subjects
Chemistry, Physical and theoretical -- Research, Density functionals -- Research, Ruthenium -- Structure, Ruthenium -- Research, Chemicals, plastics and rubber industries
Abstract

Density-functional theory with a plane wave basis set was used to study ruthenium clusters of up to 64 atoms. The study revealed that atoms in similar bonding environments have similar binding energies.

Published
2004

10. The simple cubic structure of ruthenium clusters

Author

Zhang, Wenqin, Zhao, Haitao, and Wang, Lichang

Subjects
Chemical bonds -- Structure, Chemical bonds -- Research, Ruthenium -- Structure, Ruthenium -- Research, Density functionals -- Research, Chemicals, plastics and rubber industries
Abstract

Density-functional theory with a plane wave basis set was used to study ruthenium clusters of up to 64 atoms. The study revealed that atoms in similar bonding environments have similar binding energies.

Published
2004

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