Author
Ke Bai
Bio: Ke Bai is an academic researcher from Sichuan University. The author has contributed to research in topics: Membrane & Nanoparticle. The author has an hindex of 3, co-authored 7 publications receiving 22 citations.
Papers
More filters
TL;DR: In this article, a bimetallic catalytic membrane microreactor (CMMR) with bimetal nanoparticles in membrane pores has been fabricated via flowing synthesis, and the bimetali nanoparticle is successfully immobilized in membrane pore along its thickness direction.
Abstract: A bimetallic catalytic membrane microreactor (CMMR) with bimetallic nanoparticles in membrane pores has been fabricated via flowing synthesis. The bimetallic nanoparticle is successfully immobilized in membrane pores along its thickness direction. Enhanced synergistic catalysis can be expected in this CMMR. As a concept-of-proof, Cu-Ag core-shell nanoparticles have been fabricated and immobilized in membrane pores for p-nitrophenol (p-NP) hydrogenation. Transmission electron microscopy (TEM) for the characterization of the bimetallic core-shell nanostructure and X-ray photoelectron spectroscopy (XPS) for the characterization of the electron transfer behavior between Cu-Ag bimetal have been performed. The Ag shell on the core of Cu can improve the utilization of Ag atoms, and electron transfer between bimetallic components can promote the formation of high electron density active sites as well as active hydrogen with strong reducing properties on the Ag surface. The dispersed membrane pore can prevent nanoparticle aggregation, and the contact between the reaction fluid and catalyst is enhanced. The enhanced mass transfer can be achieved by the plug-flow mode during the process of hydrogenation catalysis. The p-NP conversion rate being over 95% can be obtained under the condition of a membrane flux of 1.59 mL·cm-2·min-1. This Cu-Ag/PES CMMR has good stability and has a potential application in industry.
30 citations
TL;DR: In this paper, an Ag@PAN catalytic nanofiber composite membrane has been fabricated by combining electrospinning PAN seeding with 2-MI and flowing synthesis, where Zn 2+ in ZIF-8 exchanged by Ag+ followed with reduction reaction.
22 citations
TL;DR: In this article, an electrocatalytic composite membrane with deep-permeation nano structure (DPNS) has been fabricated by flowing synthesis and the nano electrocatalyst MnO2 is in situ successfully assembled in membrane pores and uniformly immobilized along the direction of membrane thickness.
21 citations
TL;DR: With the PTFE membrane as the substrate, a novel Ag-based catalytic membrane reactor (CMR) was fabricated by deep-permeation synthesis fabrication (DPSF) as mentioned in this paper.
Abstract: With the PTFE membrane as the substrate, a novel Ag-based catalytic membrane reactor (CMR) was fabricated by deep-permeation synthesis fabrication (DPSF). In DPSF, ZIF-8 was first assembled inside ...
20 citations
TL;DR: A catalytic membrane microreactor (CMMR) was fabricated by immobilizing ZIF-8-derived nano-Ag in membrane pores via ion exchange to enable in situ assembly of Zif-8 in polyethersulfone membran...
Abstract: A catalytic membrane microreactor (CMMR) was fabricated by immobilizing ZIF-8-derived nano-Ag in membrane pores via ion exchange. ZIF-8 was first in situ assembled in polyethersulfone (PES) membran...
15 citations
Cited by
More filters
TL;DR: In this article , a green one-step electrospinning, eco-friendly curved-ribbon nanofiber membrane with multi-hierarchical structure was proposed for efficient, breathable and sustainable air filtration.
47 citations
TL;DR: In this article, a bimetallic catalytic membrane microreactor (CMMR) with bimetal nanoparticles in membrane pores has been fabricated via flowing synthesis, and the bimetali nanoparticle is successfully immobilized in membrane pore along its thickness direction.
Abstract: A bimetallic catalytic membrane microreactor (CMMR) with bimetallic nanoparticles in membrane pores has been fabricated via flowing synthesis. The bimetallic nanoparticle is successfully immobilized in membrane pores along its thickness direction. Enhanced synergistic catalysis can be expected in this CMMR. As a concept-of-proof, Cu-Ag core-shell nanoparticles have been fabricated and immobilized in membrane pores for p-nitrophenol (p-NP) hydrogenation. Transmission electron microscopy (TEM) for the characterization of the bimetallic core-shell nanostructure and X-ray photoelectron spectroscopy (XPS) for the characterization of the electron transfer behavior between Cu-Ag bimetal have been performed. The Ag shell on the core of Cu can improve the utilization of Ag atoms, and electron transfer between bimetallic components can promote the formation of high electron density active sites as well as active hydrogen with strong reducing properties on the Ag surface. The dispersed membrane pore can prevent nanoparticle aggregation, and the contact between the reaction fluid and catalyst is enhanced. The enhanced mass transfer can be achieved by the plug-flow mode during the process of hydrogenation catalysis. The p-NP conversion rate being over 95% can be obtained under the condition of a membrane flux of 1.59 mL·cm-2·min-1. This Cu-Ag/PES CMMR has good stability and has a potential application in industry.
30 citations
TL;DR: In this article , a low-temperature plasma-induced strong metal-support interaction (SMSI) was achieved on a MgO-supported MAg (M = Cu, Fe, or Ni) system by focusing an electric field at a localized interface.
28 citations
TL;DR: In this paper , an [email protected] catalytic nanofiber composite membrane has been fabricated by combining electrospinning PAN seeding with 2-MI and flowing synthesis, where ZIF-8 can be immobilized on the surface of the nanofibers with Zn(NO3)2 solution flowing through the 2MI/PAN membrane and Ag nanoparticles can be exchanged by Ag+ followed with reduction reaction.
22 citations
TL;DR: In this paper, an Ag@PAN catalytic nanofiber composite membrane has been fabricated by combining electrospinning PAN seeding with 2-MI and flowing synthesis, where Zn 2+ in ZIF-8 exchanged by Ag+ followed with reduction reaction.
22 citations