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Fabrication of bimetallic Cu–Zn adsorbents with high dispersion by using confined space for gas adsorptive

Frontiers of Chemical Science and Engineering   Pages 1623-1631 doi: 10.1007/s11705-022-2202-y

Abstract: number of active components and their dispersion degree are two key factors affecting the performance of adsorbentsThe bimetallic materials were employed for the adsorptive separation of propene and propane.

Keywords： bimetallic adsorbents     confined space     mesoporous silica     propene/propane separation    

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Low-cost adsorbents for urban stormwater pollution control

Yang Deng

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1262-9

Abstract: Abstract • Various low-cost adsorbents are studied for capturing urban stormwater pollutants. • Adsorbentsare selected based on both pollutant adsorption and unexpected leaching. • Application modes of adsorbentsTo improve the treatment efficacy of stormwater infrastructure, low-cost adsorbents have increasinglyIn contrast, standalone filters or innovative composite adsorbents (e.g., adsorbent-coated mulch chips) can enable a long-lasting adsorption due to periodic replacement with fresh adsorbents.

Keywords： Urban stormwater     Runoff pollutants     Low-cost adsorbents     Adsorption     Chemical leaching    

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Preparation and characterization of EVAL hollow fiber membrane adsorbents filled with cation exchange

Fengli ZHANG, Yuzhong ZHANG, Hong LI, Guangfen LI,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 462-467 doi: 10.1007/s11705-009-0011-1

Abstract: EVAL hollow fiber membrane adsorbents filled with powder D061-type cation exchange resin were preparedThe microstructures of the membrane adsorbents were observed, and the pure water fluxes, BSA rejection, and static adsorption capacities of membrane adsorbents for BSA were measured.The results showed that EVAL hollow fiber membrane adsorbents filled with D061-type cation exchange resinsThe static protein adsorption capacity was 77.14 mg BSA/g membrane adsorbents when D061 resin loading

Keywords： substrate     copolymer EVAL     exchange     EVAL hollow     resin-filled content    

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Ni-Co bimetallic catalyst for CH

Xiaohong LI, Jun AI, Wenying LI, Dongxiong LI

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 476-480 doi: 10.1007/s11705-010-0512-y

Abstract: Ni-Co/Al O -ZrO bimetallic catalyst has good performance in the reduction of active components Ni, CoCompared with mono-metallic catalyst, bimetallic catalyst could provide more active sites and CO adsorption

Keywords： Ni-Co bimetallic catalyst     composite support     CH4 reforming with CO2    

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Composite adsorbents of CaCl

Huashan LI, Xianbiao BU, Lingbao WANG, Zhenneng LU, Weibin MA

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 356-360 doi: 10.1007/s11708-012-0207-9

Abstract: Composite adsorbents of CaCl and sawdust prepared by carbonization for adsorption refrigeration withThe results show that the amount of pores in the sawdust of the composite adsorbents carbonized, apartfrom the content of CaCl , is the most dominant factor influencing the NH sorption on composite adsorbents

Keywords： adsorption refrigeration     composite adsorbent     calcium chloride     sawdust     carbonization    

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Enhanced activation of persulfate using mesoporous silica spheres augmented Cu–Al bimetallic oxide particles

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1581-1592 doi: 10.1007/s11705-023-2327-7

Abstract: Herein, Cu–Al bimetallic oxide was synthesized and mixed with mesoporous silica spheres via a simpleresults of X-ray diffraction, scanning electron microscopy, and energy dispersion spectroscopy, Cu–Al bimetallic

Keywords： Cu–Al bimetallic oxides     mesoporous silica spheres     peroxydisulfate     bisphenol A    

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Removing polybrominated diphenyl ethers in pure water using Fe/Pd bimetallic nanoparticles

Min ZHANG,Jian LU,Zhencheng XU,Yiliang HE,Bo ZHANG,Song JIN,Brian BOMAN

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 832-839 doi: 10.1007/s11783-015-0778-x

Abstract: To enhance the degradation efficiency, ZVI/Palladium bimetallic nanoparticles (nZVI/Pd) were synthesized

Keywords： degradation     bimetallic nanoparticles     nanoscale zero-valent iron     polybrominated diphenyl ethers    

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Dechlorination of dichlorodiphenyltrichloroethane (DDT) by Fe/Pd bimetallic nanoparticles: Comparison

Kubra Ulucan-Altuntas, Eyup Debik

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 1, doi: 10.1007/s11783-019-1196-2

Abstract: DDT undergoes dechlorination via Fe/Pd bimetallic nanoparticle.In this study, the bimetallic Fe/Pd nanoparticle was synthesized using the catalytic element palladiumThe highest possible initial DDT concentration for the treatment with Fe/Pd bimetallic nanoparticle was

Keywords： Persistent organic pollutants     nZVI     Bimetallic nanoparticle     Organochlorine pesticides     DDT    

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Beta-cyclodextrin adsorbents to remove water pollutants—a commentary

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9,   Pages 1407-1423 doi: 10.1007/s11705-022-2146-2

Abstract: highlight the preparation strategies, properties, and adsorption mechanisms of beta-cyclodextrin-based adsorbentsThe adsorbents can be generally classified according to the preparation methods and display high adsorptionParticularly, composite/nanocomposite beta-cyclodextrin-based adsorbents exhibit outstanding adsorptioncapacity even though the surface area is lower than that of porous and magnetic beta-cyclodextrin-based adsorbentsinteractions, cost-effective analysis, challenges, and future directions of beta-cyclodextrin-based adsorbents

Keywords： beta-cyclodextrin adsorbent     adsorption     inclusion complex     mechanism     water pollutant     wastewater treatment    

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Enhanced activity of bimetallic Fe-Cu catalysts supported on ceria toward water gas shift reaction: synergistic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1962-1972 doi: 10.1007/s11705-023-2359-z

Abstract: In this work, we propose bimetallic iron-copper catalysts supported on ceria, characterized by low active

Keywords： water gas shift     iron     copper     bimetallic catalysts     ceria     hydrogen    

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Mechanistic understanding of Cu-based bimetallic catalysts

You Han, Yulian Wang, Tengzhou Ma, Wei Li, Jinli Zhang, Minhua Zhang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 689-748 doi: 10.1007/s11705-019-1902-4

Abstract: Copper has received extensive attention in the field of catalysis due to its rich natural reserves, low cost, and superior catalytic performance. Herein, we reviewed two modification mechanisms of co-catalyst on the coordination environment change of Cu-based catalysts: (1) change the electronic orbitals and geometric structure of Cu without any catalytic functions; (2) act as an additional active site with a certain catalytic function, as well as their catalytic mechanism in major reactions, including the hydrogenation to alcohols, dehydrogenation of alcohols, water gas shift reaction, reduction of nitrogenous compounds, electrocatalysis and others. The influencing mechanisms of different types of auxiliary metals on the structure-activity relationship of Cu-based catalysts in these reactions were especially summarized and discussed. The mechanistic understanding can provide significant guidance for the design and controllable synthesis of novel Cu-based catalysts used in many industrial reactions.

Keywords： copper     bimetallic catalyst     coordination     modification mechanism     catalytic application    

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Capture of carbon dioxide over porous solid adsorbents lithium silicate, lithium aluminate and magnesium

P. V. Korake, A. G. Gaikwad

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 215-226 doi: 10.1007/s11705-010-1012-9

Abstract: The capturing process for carbon dioxide over porous solid adsorbents such as lithium silicate, lithiumThe capturing process for carbon dioxide was investigated over these adsorbents with variation of theirsilicate adsorbent was explored to investigate the variation of the capture of carbon dioxide over these adsorbents

Keywords： capturing CO2     lithium silicate     lithium aluminate     magnesium aluminate    

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Development of barium@alginate adsorbents for sulfate removal in lithium refining

Lisa Xu, Kaifei Chen, George Q. Chen, Sandra E. Kentish, Gang (Kevin) Li

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 198-207 doi: 10.1007/s11705-020-1968-z

Abstract: removed from the aqueous system and do not result in secondary barium contamination, these Ca/Ba@alginate adsorbents

Keywords： barium@alginate     microcapsules     dropwise injection     sulfate removal     lithium    

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The preparation and performance of lignin-based activated carbon fiber adsorbents for treating gaseous

Min Song, Wei Zhang, Yongsheng Chen, Jinming Luo, John C. Crittenden

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 328-337 doi: 10.1007/s11705-017-1646-y

Abstract: Two types of lignin-based carbon fibers were prepared by electrospinning method. The first was activated with Fe O (LCF-Fe), and the second was not activated with Fe O (LCF). Gas phase adsorption isotherms for toluene on LCF-Fe and LCF were studied. The gas phase adsorption isotherm for 0% RH showed LCF-Fe have about 439 mg/g adsorption capacity which was close to that of commercially available activated carbon (500 mg/g). The Dubinin-Radushkevich equation described the isotherm data very well. Competitive adsorption isotherms between water vapor and toluene were measured for their RH from 0 to 80%. The effect of humidity on toluene gas-phase adsorption was predicted by using the Okazaki et al. model. In addition, a constant pattern homogeneous surface diffusion model (CPHSDM) was used to predict the toluene breakthrough curve of continuous flow-packed columns containing LCF-Fe, and its capacity was 412 mg/g. Our study, which included material characterization, adsorption isotherms, kinetics, the impact of humidity and fixed bed performance modeling, demonstrated the suitability of lignin-based carbon fiber for volatile organic compound removal from gas streams.

Keywords： lignin     carbon fiber     electrospinning     toluene     humidity    

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A Pt-Bi bimetallic nanoparticle catalyst for direct electro-oxidation of formic acid in fuel cells

Shu-Hong LI, Yue ZHAO, Jian CHU, Wen-Wei LI, Han-Qing YU, Gang LIU, Yang-Chao TIAN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 388-394 doi: 10.1007/s11783-012-0475-y

Abstract: Direct formic acid fuel cells are a promising portable power-generating device, and the development of efficient anodic catalysts is essential for such a fuel cell. In this work Pt-Bi nanoparticles supported on micro-fabricated gold wire array substrate were synthesized using an electrochemical deposition method for formic acid oxidation in fuel cells. The surface morphology and element components of the Pt-Bi/Au nanoparticles were characterized, and the catalytic activities of the three Pt-Bi/Au nanoparticle electrodes with different Pt/Bi ratios for formic acid oxidation were evaluated. It was found that Pt Bi /Au had a much higher catalytic activity than Pt Bi /Au and Pt Bi /Au, and Pt Bi /Au exhibited a current density of 2.7 mA·cm , which was 27-times greater than that of Pt/Au. The electro-catalytic activity of the Pt-Bi/Au electrode for formic acid oxidation increased with the increasing Bi content, suggesting that it would be possible to achieve an efficient formic acid oxidation on the low Pt-loading. Therefore, the Pt-Bi/Au electrode offers a promising catalyst with a high activity for direct oxidation of formic acid in fuel cells.

Keywords： catalyst     electrochemical deposition     formic acid oxidation     fuel cell     gold wire array     microfabrication    

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Title Author Date Type Operation

Fabrication of bimetallic Cu–Zn adsorbents with high dispersion by using confined space for gas adsorptive

Journal Article

Low-cost adsorbents for urban stormwater pollution control

Yang Deng

Journal Article

Preparation and characterization of EVAL hollow fiber membrane adsorbents filled with cation exchange

Fengli ZHANG, Yuzhong ZHANG, Hong LI, Guangfen LI,

Journal Article

Ni-Co bimetallic catalyst for CH

Xiaohong LI, Jun AI, Wenying LI, Dongxiong LI

Journal Article

Composite adsorbents of CaCl

Huashan LI, Xianbiao BU, Lingbao WANG, Zhenneng LU, Weibin MA

Journal Article

Enhanced activation of persulfate using mesoporous silica spheres augmented Cu–Al bimetallic oxide particles

Journal Article

Removing polybrominated diphenyl ethers in pure water using Fe/Pd bimetallic nanoparticles

Min ZHANG,Jian LU,Zhencheng XU,Yiliang HE,Bo ZHANG,Song JIN,Brian BOMAN

Journal Article

Dechlorination of dichlorodiphenyltrichloroethane (DDT) by Fe/Pd bimetallic nanoparticles: Comparison

Kubra Ulucan-Altuntas, Eyup Debik

Journal Article

Beta-cyclodextrin adsorbents to remove water pollutants—a commentary

Journal Article

Enhanced activity of bimetallic Fe-Cu catalysts supported on ceria toward water gas shift reaction: synergistic

Journal Article

Mechanistic understanding of Cu-based bimetallic catalysts

You Han, Yulian Wang, Tengzhou Ma, Wei Li, Jinli Zhang, Minhua Zhang

Journal Article

Capture of carbon dioxide over porous solid adsorbents lithium silicate, lithium aluminate and magnesium

P. V. Korake, A. G. Gaikwad

Journal Article

Development of barium@alginate adsorbents for sulfate removal in lithium refining

Lisa Xu, Kaifei Chen, George Q. Chen, Sandra E. Kentish, Gang (Kevin) Li

Journal Article

The preparation and performance of lignin-based activated carbon fiber adsorbents for treating gaseous

Min Song, Wei Zhang, Yongsheng Chen, Jinming Luo, John C. Crittenden

Journal Article

A Pt-Bi bimetallic nanoparticle catalyst for direct electro-oxidation of formic acid in fuel cells

Shu-Hong LI, Yue ZHAO, Jian CHU, Wen-Wei LI, Han-Qing YU, Gang LIU, Yang-Chao TIAN

Journal Article