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1. Study on the braiding of preform with special-shaped sections based on the two-dimensional braiding process

Author:
Wu, Jiewei,   et al.   ; Yu, Qiang; Sun, Zhihong; Qiu, Yiping; Zhou, Shenhua; Chen, Yanting; Zhou, Qihong; Chen, Xiaochuan;     Show all 8 Authors
Source:
Textile research journal 2019 v.89 no.2 pp. 172-181
ISSN:
1746-7748
Subject:
equipment design; fabrics; gears; textile fibers
Abstract:
... In this paper, a method for designing a two-dimensional (2D) braiding machine to braid preforms with special-shaped cross-sections is proposed. By means of splicing the running tracks of a traditional flat braiding machine’s carriers, the 2D braiding machine can produce various structures with special-shaped cross-sections such as thin-walled cross-shaped, H-shaped, U-shaped, and T-shaped cross-se ...
DOI:
10.1177/0040517517741159

2. Formation, Aggregation, and Deposition Dynamics of NOM-Iron Colloids at Anoxic–Oxic Interfaces

Author:
Wu, Jiewei,   et al.   ; Liao, Peng; Li, Wenlu; Jiang, Yi; Yuan, Songhu; Fortner, John D.; Giammar, Daniel E.;     Show all 7 Authors
Source:
Environmental Science & Technology 2017 v.51 no.21 pp. 12235-12245
ISSN:
1520-5851
Subject:
aerobic conditions; anaerobic conditions; colloids; environmental science; humic acids; iron; mixing; redox reactions
Abstract:
... The important role of natural organic matter (NOM)–Fe colloids in influencing contaminant transport, and this role can be influenced by the formation, aggregation, and particle deposition dynamics of NOM-Fe colloids. In this work, NOM-Fe colloids at different C/Fe ratios were prepared by mixing different concentrations of humic acid (HA) with 10 mg/L Fe(II) under anoxic conditions. The colloids we ...
DOI:
10.1021/acs.est.7b02356

3. Ground State Reactions of nC60 with Free Chlorine in Water

Author:
Wu, Jiewei,   et al.   ; Benoit, Denise; Lee, Seung Soo; Li, Wenlu; Fortner, John D.;     Show all 5 Authors
Source:
Environmental Science & Technology 2016 v.50 no.2 pp. 721-731
ISSN:
1520-5851
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; chlorine; environmental fate; fullerene; hydrophilicity; ionic strength; oxidants; oxidation; oxygen; pH; transmission electron microscopy
Abstract:
... Facile, photoenhanced transformations of water-stable C₆₀ aggregates (nC₆₀) to oxidized, soluble fullerene derivatives, have been described as key processes in understanding the ultimate environmental fate of fullerene based materials. In contrast, fewer studies have evaluated the aqueous reactivity of nC₆₀ during ground-state conditions (i.e., dark conditions). Herein, this study identifies and c ...
DOI:
10.1021/acs.est.5b04368

4. Engineering Nanoscale Iron Oxides for Uranyl Sorption and Separation: Optimization of Particle Core Size and Bilayer Surface Coatings

Author:
Wu, Jiewei,   et al.   ; Li, Wenlu; Troyer, Lyndsay D.; Lee, Seung Soo; Kim, Changwoo; Lafferty, Brandon J.; Catalano, Jeffrey G.; Fortner, John D.;     Show all 8 Authors
Source:
ACS applied materials & interfaces 2017 v.9 no.15 pp. 13163-13172
ISSN:
1944-8252
Subject:
X-ray absorption spectroscopy; adsorption; coatings; magnetite; nanoparticles; oleic acid; pH; particle size; phosphates; remediation; sodium; uranium
Abstract:
... Herein, we describe engineered superparamagnetic iron oxide nanoparticles (IONPs) as platform materials for enhanced uranyl (UO₂²⁺) sorption and separation processes under environmentally relevant conditions. Specifically, monodispersed 8–25 nm iron oxide (magnetite, Fe₃O₄) nanoparticles with tailored organic acid bilayered coatings have been systematically evaluated and optimized to bind, and thu ...
DOI:
10.1021/acsami.7b01042

5. Anti-inflammatory Inositol Derivatives from the Whole Plant of Inula cappa

Author:
Wu, Jiewei,   et al.   ; Tang, Chunping; Yao, Sheng; Zhang, Lei; Ke, Changqiang; Feng, Linyin; Lin, Ge; Ye, Yang;     Show all 8 Authors
Source:
Journal of natural products 2015 v.78 no.10 pp. 2332-2338
ISSN:
1520-6025
Subject:
Inula; anti-inflammatory activity; inhibitory concentration 50; lipopolysaccharides; macrophages; mass spectrometry; myo-inositol; nitric oxide; nuclear magnetic resonance spectroscopy; spectral analysis
Abstract:
... Twelve new inositol derivatives, classified into myoinositol (1–6) and l-inositol (10–15) types, along with five known analogues were isolated from the whole plant of Inula cappa. The structures of the new compounds were established by extensive analysis of mass spectrometric and 1D and 2D NMR spectroscopic data. All the tested compounds showed anti-inflammatory activities against the production o ...
DOI:
10.1021/acs.jnatprod.5b00135

6. Dicarabrones A and B, a Pair of New Epimers Dimerized from Sesquiterpene Lactones via a [3 + 2] Cycloaddition from Carpesium abrotanoides

Author:
Wu, Jiewei,   et al.   ; Tang, Chunping; Chen, Lan; Qiao, Yan; Geng, Meiyu; Ye, Yang;     Show all 6 Authors
Source:
Organic letters 2015 v.17 no.7 pp. 1656-1659
ISSN:
1523-7052
Subject:
Carpesium; X-ray diffraction; chemical structure; cycloaddition reactions; inhibitory concentration 50; sesquiterpenoid lactones; spectral analysis
Abstract:
... Dicarabrones A and B, a pair of epimers possessing a new skeleton featuring a cyclopentane ring connecting two sesquiterpene lactone units, were isolated from the whole plant of Carpesium abrotanoides L. Their full structures were established on the basis of spectroscopic data and were further confirmed by single-crystal X-ray crystallography. They were presumably biosynthesized from two sesquiter ...
DOI:
10.1021/acs.orglett.5b00371

7. Kinetics of the Reductive Dissolution of Lead(IV) Oxide by Iodide

Author:
Wu, Jiewei,   et al.   ; Wang, Yin; Giammar, Daniel E.;     Show all 3 Authors
Source:
Environmental Science & Technology 2012 v.46 no.11 pp. 5859-5866
ISSN:
1520-5851
Subject:
carbon; chemical reduction; corrosion; drinking water; iodides; lead; models; oxides; pH; pipes; reducing agents; solubility
Abstract:
... Lead(IV) oxide (PbO₂) is a corrosion product found in lead service lines used to convey drinking water. The presence of reductants can accelerate PbO₂ dissolution and enhance lead release to drinking water. The dissolution rate rather than the equilibrium solubility of PbO₂ can control the dissolved lead concentrations in water distributed through pipes containing PbO₂. Iodide, a known reductant f ...
DOI:
10.1021/es2038905

8. Aqueous Aggregation Behavior of Engineered Superparamagnetic Iron Oxide Nanoparticles: Effects of Oxidative Surface Aging

Author:
Wu, Jiewei,   et al.   ; Li, Wenlu; Lee, Seung Soo; Mittelman, Anjuliee M.; Liu, Di; Hinton, Carl H.; Abriola, Linda M.; Pennell, Kurt D.; Fortner, John D.;     Show all 9 Authors
Source:
Environmental Science & Technology 2016 v.50 no.23 pp. 12789-12798
ISSN:
1520-5851
Subject:
adsorption; bicarbonates; calcium; cations; environmental fate; hydrogen peroxide; ionic strength; iron oxides; ligands; models; nanoparticles; oleic acid; oxidants; oxidation; phosphates; sodium
Abstract:
... For successful aqueous-based applications, it is necessary to fundamentally understand and control nanoparticle dispersivity and stability over a range of dynamic conditions, including variable ionic strengths/types, redox chemistries, and surface ligand reactivity/degradation states (i.e., surface aging). Here, we quantitatively describe the behavior of artificially aged, oleic acid (OA) bilayer ...
DOI:
10.1021/acs.est.6b04130

9. Engineered Crumpled Graphene Oxide Nanocomposite Membrane Assemblies for Advanced Water Treatment Processes

Author:
Wu, Jiewei,   et al.   ; Jiang, Yi; Wang, Wei-Ning; Liu, Di; Nie, Yao; Li, Wenlu; Zhang, Fuzhong; Biswas, Pratim; Fortner, John D.;     Show all 9 Authors
Source:
Environmental Science & Technology 2015 v.49 no.11 pp. 6846-6854
ISSN:
1520-5851
Subject:
Escherichia coli; anti-infective properties; biofilm; encapsulation; graphene oxide; methyl orange; models; nanocomposites; nanoparticles; photocatalysis; silver; titanium dioxide; ultrafiltration; water treatment
Abstract:
... In this work, we describe multifunctional, crumpled graphene oxide (CGO) porous nanocomposites that are assembled as advanced, reactive water treatment membranes. Crumpled 3D graphene oxide based materials fundamentally differ from 2D flat graphene oxide analogues in that they are highly aggregation and compression-resistant (i.e., π–π stacking resistant) and allow for the incorporation (wrapping) ...
DOI:
10.1021/acs.est.5b00904

10. Aqueous Aggregation and Surface Deposition Processes of Engineered Superparamagnetic Iron Oxide Nanoparticles for Environmental Applications

Author:
Wu, Jiewei,   et al.   ; Li, Wenlu; Liu, Di; Kim, Changwoo; Fortner, John D.;     Show all 5 Authors
Source:
Environmental Science & Technology 2014 v.48 no.20 pp. 11892-11900
ISSN:
1520-5851
Subject:
calcium chloride; coagulation; hydrophobic bonding; image analysis; ionic strength; iron oxides; light scattering; magnetic properties; models; monitoring; nanoparticles; oleic acid; polystyrenes; prediction; quartz; remediation; sodium chloride; surface interactions; zeta potential
Abstract:
... Engineered, superparamagnetic, iron oxide nanoparticles (IONPs) have significant potential as platform materials for environmental sensing, imaging and remediation due to their unique size, physicochemical and magnetic properties. To this end, controlling the size and surface chemistry of the materials is crucial for such applications in the aqueous phase, and in particular, for porous matrixes wi ...
DOI:
10.1021/es502174p

11. Reduction of Hydroxylated Fullerene (Fullerol) in Water by Zinc: Reaction and Hemiketal Product Characterization

Author:
Wu, Jiewei,   et al.   ; Alemany, Lawrence B.; Li, Wenlu; Petrie, Liza; Welker, Cara; Fortner, John D.;     Show all 6 Authors
Source:
Environmental Science & Technology 2014 v.48 no.13 pp. 7384-7392
ISSN:
1520-5851
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; fullerene; hydrophobicity; nuclear magnetic resonance spectroscopy; octanol; pH; physical properties; transmission electron microscopy; ultraviolet radiation; zinc
Abstract:
... Water-soluble, hydroxylated fullerene (fullerol) materials have recently gained increasing attention as they have been identified as the primary product(s) during the exposure of fullerenes (as water stable, nanoscale aggregated C₆₀) to UV light in water. The physical properties and chemical reactivity of resulting fullerols, however, have not been thoroughly studied. In this paper, we identified ...
DOI:
10.1021/es5012912

12. Photo-Oxidation of Hydrogenated Fullerene (Fullerane) in Water

Author:
Wu, Jiewei,   et al.   ; Goodwin, David G.; Peter, Katherine; Benoit, Denise; Li, Wenlu; Fairbrother, D. Howard; Fortner, John D.;     Show all 7 Authors
Source:
Environmental Science & Technology Letters 2014 v.1 no.12 pp. 490-494
ISSN:
2328-8930
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; dissolved oxygen; environmental science; fullerene; hydrogen; hydrogenation; hydrophilicity; hydroxyl radicals; irradiation; light scattering; lithium batteries; moieties; organic carbon; oxygen; photooxidation; reaction kinetics; solar radiation; ultraviolet radiation; ultraviolet-visible spectroscopy; wavelengths
Abstract:
... Hydrogenated fullerenes (termed fulleranes) have been demonstrated to be key material components in advanced hydrogen storage and lithium battery technologies, among other applications; however, their potential environmental reactivity has not been evaluated to date. Here, for the first time, photoinduced oxidation and corresponding dissolution of solid fulleranes (C₆₀Hₓ, where x = 39.9–45.5) into ...
DOI:
10.1021/ez5003055

13. Kinetics of lead(IV) oxide (PbO2) reductive dissolution: Role of lead(II) adsorption and surface speciation

Author:
Wu, Jiewei,   et al.   ; Wang, Yin; Wang, Zimeng; Terenyi, Agnes; Giammar, Daniel E.;     Show all 5 Authors
Source:
Journal of colloid and interface science 2013 v.389 no.1 pp. 236-243
ISSN:
0021-9797
Subject:
adsorption; chlorine; corrosion; drinking water; lead; models; pH; pipes; water distribution
Abstract:
... Lead(IV) oxide (PbO₂) is a corrosion product on lead pipes used for drinking water distribution, and its dissolution can control lead release to drinking water. This study evaluated the adsorption of Pb(II) to PbO₂ and its impact on the dissolution rate of PbO₂. The dissolution rate of PbO₂ was determined as a function of pH in the absence and presence of free chlorine using continuously-stirred t ...
DOI:
10.1016/j.jcis.2012.09.022