Resource Type

Journal Article 5

Year

2020 1

2018 1

2017 1

2007 1

Keywords

microsphere 2

CO2 1

Ca(OH)2 1

CaCO3 1

Cr(VI) reduction 1

DNA 1

La3+ doping 1

PBZ 1

SrTiO3 1

adsorption 1

biomedicine 1

carbon 1

chitosan microsphere 1

copper (II) 1

distiller waste 1

hollow microsphere 1

inside−out Ostwald effect 1

microfluidic technology 1

porous materials 1

porous microsphere 1

open ︾

Search scope:

排序： Display mode:

Preparation and application of magnetic microsphere carriers

ZHANG Bo, XING Jianmin, LIU Huizhou

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 96-101 doi: 10.1007/s11705-007-0019-3

Abstract: Magnetic microsphere carriers have received considerable attention, primarily because of their wide applications

Keywords： microsphere     biomedicine     DNA     purification     preparation    

HTML PDF Collect

Formation of CaCO hollow microspheres in carbonated distiller waste from Solvay soda ash plants

Frontiers of Chemical Science and Engineering   Pages 1659-1671 doi: 10.1007/s11705-022-2173-z

Abstract: For decades, distiller waste and CO2 were not the first choice for production of high valued products. Here, CaCO3 hollow microspheres, a high-value product was synthesized from such a reaction system. The synthetic methods, the formation mechanism and operational cost were discussed. When 2.5 L·min–1·L–1 CO2 was flowed into distiller waste (pH = 11.4), spheres with 4–13 μm diameters and about 2 μm shell thickness were obtained. It is found that there is a transformation of CaCO3 particles from solid-cubic nuclei to hollow spheres. Firstly, the Ca(OH)2 in the distiller waste stimulated the nucleation of calcite with a non-template effect and further maintained the calcite form and prevented the formation of vaterite. Therefore, in absence of auxiliaries, the formation of hollow structures mainly depended on the growth and aging of CaCO3. Studies on the crystal morphology and its changes during the growth process point to the inside–out Ostwald effect in the formation of hollow spheres. Change in chemical properties of the bulk solution caused changes in interfacial tension and interfacial energy, which promoted the morphological transformation of CaCO3 particles from cubic calcite to spherical clusters. Finally, the flow process for absorption of CO2 by distiller waste was designed and found profitable.

Keywords： distiller waste     CO2     hollow microsphere     CaCO3     Ca(OH)2     inside−out    

HTML PDF Collect

Microfluidic synthesis of renewable biosorbent with highly comprehensive adsorption performance for copper (II)

Yong Zhu, Zhishan Bai, Bingjie Wang, Linlin Zhai, Wenqiang Luo

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 238-251 doi: 10.1007/s11705-017-1627-1

Abstract: A microsphere biosorbent with uniform size (CV= 1.52%), controllable morphology and component, and highThis chitosan microsphere (CS-MS) was prepared with a two-step solidification process, which was acquired

Keywords： chitosan microsphere     microfluidic technology     adsorption     copper (II)    

HTML PDF Collect

Facile preparation of polybenzoxazine-based carbon microspheres with nitrogen functionalities: Effects of mixed solvents on pore structure and supercapacitive performance

Uthen Thubsuang, Suphawadee Chotirut, Apisit Thongnok, Archw Promraksa, Mudtorlep Nisoa, Nicharat Manmuanpom, Sujitra Wongkasemjit, Thanyalak Chaisuwan

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1072-1086 doi: 10.1007/s11705-019-1899-8

Abstract: In this study, polybenzoxazine (PBZ)-based carbon microspheres were prepared via a facile method using a mixture of formaldehyde (F) and dimethylformamide (DMF) as the solvent. The PBZ microspheres were successfully obtained at the F/DMF weight ratios of 0.4 and 0.6. These microspheres exhibited high nitrogen contents after carbonization. The microstructures of all the samples showed an amorphous phase and a partial graphitic phase. The porous carbon with the F/DMF ratio of 0.4 showed significantly higher specific capacitance (275.1 F g ) than the reference carbon (198.9 F g ) at 0.05 A g . This can be attributed to the synergistic electrical double-layer capacitor and pseudo-capacitor behaviors of the porous carbon with the F/DMF ratio of 0.4. The presence of nitrogen/oxygen functionalities induced pseudo-capacitance in the microspheres, and hence increased their total specific capacitance. After activation with CO , the specific surface area of the carbon microspheres with the F/DMF ratio of 0.4 increased from 349 to 859 m g and the specific capacitance increased to 424.7 F g . This value is approximately two times higher than that of the reference carbon. The results indicated that the F/DMF ratio of 0.4 was suitable for preparing carbon microspheres with good supercapacitive performance. The nitrogen/oxygen functionalities and high specific surface area of the microspheres were responsible for their high capacitance.

Keywords： PBZ     carbon     porous materials     microsphere     supercapacitor    

HTML PDF Collect

Fabrication of three-dimensional porous La-doped SrTiO3 microspheres with enhanced visible light catalytic activity for Cr(VI) reduction

Dong Yang, Xiaoyan Zou, Yuanyuan Sun, Zhenwei Tong, Zhongyi Jiang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 440-449 doi: 10.1007/s11705-018-1700-4

Abstract: microspheres were prepared by a modified sol–gel method, in which the agarose gel/SrCO3 microsphere

Keywords： SrTiO3     La3+ doping     porous microsphere     visible-light photocatalysis     Cr(VI) reduction    

HTML PDF Collect

Title Author Date Type Operation

Preparation and application of magnetic microsphere carriers

ZHANG Bo, XING Jianmin, LIU Huizhou

Journal Article

Formation of CaCO hollow microspheres in carbonated distiller waste from Solvay soda ash plants

Journal Article

Microfluidic synthesis of renewable biosorbent with highly comprehensive adsorption performance for copper (II)

Yong Zhu, Zhishan Bai, Bingjie Wang, Linlin Zhai, Wenqiang Luo

Journal Article

Facile preparation of polybenzoxazine-based carbon microspheres with nitrogen functionalities: Effects of mixed solvents on pore structure and supercapacitive performance

Uthen Thubsuang, Suphawadee Chotirut, Apisit Thongnok, Archw Promraksa, Mudtorlep Nisoa, Nicharat Manmuanpom, Sujitra Wongkasemjit, Thanyalak Chaisuwan

Journal Article

Fabrication of three-dimensional porous La-doped SrTiO3 microspheres with enhanced visible light catalytic activity for Cr(VI) reduction

Dong Yang, Xiaoyan Zou, Yuanyuan Sun, Zhenwei Tong, Zhongyi Jiang

Journal Article