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  1. Article ; Online: Low-temperature molten-salt synthesis of Co3O4 nanoparticles grown on MXene can rapidly remove ornidazole via peroxymonosulfate activation

    Hao, Chenglin / Rao, Fengling / Zhang, Yunqiu / Wang, Huaisheng / Chen, Jianbin / Wågberg, Thomas / Hu, Guangzhi

    Environmental Pollution. 2023 Oct., v. 334 p.121811-

    2023  

    Abstract: We further developed previous work on MXene materials prepared using molten salt methodology. We substituted single, with mixed salts, and reduced the melting point from >724 °C to <360 °C. Cobalt (Co) compounds were simultaneously etched and doped while ...

    Abstract We further developed previous work on MXene materials prepared using molten salt methodology. We substituted single, with mixed salts, and reduced the melting point from >724 °C to <360 °C. Cobalt (Co) compounds were simultaneously etched and doped while the MXene material was created using various techniques in which Co compounds occur as Co₃O₄. The synthesized Co₃O₄/MXene compound was used as a peroxymonosulfate (PMS) activator that would generate free radicals to degrade antibiotic ornidazole (ONZ). Under optimal conditions, almost 100% of ONZ (30 mg/L) was degraded within 10 min. The Co₃O₄/MXene + PMS system efficiently degraded ONZ in natural water bodies, and had a broad pH adaptation range (4–11), and strong anion anti-interference. We investigated how the four active substances were generated using radical quenching and electron paramagnetic resonance (EPR) spectroscopy. We identified 12 ONZ intermediates by liquid chromatography-mass spectrometry and propose a plausible degradative mechanism.
    Keywords antibiotics ; cobalt ; cobalt oxide ; electron paramagnetic resonance spectroscopy ; liquid chromatography ; mass spectrometry ; nanoparticles ; pH ; pollution ; Solid phase synthesist ; Titanium carbide ; Antibiotic ornidazole degradation ; Advanced oxidation process
    Language English
    Dates of publication 2023-10
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ZDB-ID 280652-6
    ISSN 1873-6424 ; 0013-9327 ; 0269-7491
    ISSN (online) 1873-6424
    ISSN 0013-9327 ; 0269-7491
    DOI 10.1016/j.envpol.2023.121811
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 4136: Show issues

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  2. Article: Three-dimensional porous high boron-nitrogen-doped carbon for the ultrasensitive electrochemical detection of trace heavy metals in food samples

    Huang, Ruihua / Lv, Jiapei / Chen, Jianbing / Zhu, Yeling / Zhu, Jian / Wågberg, Thomas / Hu, Guangzhi

    Journal of hazardous materials. 2023 Jan. 15, v. 442

    2023  

    Abstract: Exposure to even trace amounts of Cd(II) and Pb(II) in food can have serious effects on the human body. Therefore, the development of novel electrochemical sensors that can accurately detect the different toxicity levels of heavy metal ions in food is of ...

    Abstract Exposure to even trace amounts of Cd(II) and Pb(II) in food can have serious effects on the human body. Therefore, the development of novel electrochemical sensors that can accurately detect the different toxicity levels of heavy metal ions in food is of great significance. Based on the principle of green chemistry, we propose a new type of boron and nitrogen co-doped carbon (BCN) material derived from a metal-organic framework material and study its synthesis, characterization, and heavy-metal ion detection ability. Under the optimum conditions, the BCN-modified glassy carbon electrode was studied using square-wave anodic stripping voltammetry, which showed good electrochemical responses to Cd(II) and Pb(II), with sensitivities as low as 0.459 and 0.509 μA/μM cm², respectively. The sensor was successfully used to detect Cd(II) and Pb(II) in Beta vulgaris var. cicla L samples, which is consistent with the results obtained using inductively coupled plasma-mass spectrometry. It also has a strong selectivity for complex samples. This study provides a novel approach for the detection of heavy metal ions in food and greatly expands the application of heteroatom-doped metal-free carbon materials in detection platforms.
    Keywords Beta vulgaris subsp. vulgaris ; boron ; carbon ; coordination polymers ; electrochemistry ; glassy carbon electrode ; green chemistry ; heavy metals ; humans ; nitrogen ; spectroscopy ; toxicity ; voltammetry
    Language English
    Dates of publication 2023-0115
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2022.130020
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  3. Article ; Online: Interface engineering induced charge rearrangement boosting reversible oxygen electrocatalysis activity of heterogeneous FeCo-MnO@N-doped carbon nanobox

    Ye, Ying / Zhang, Lei / Zhu, Qiliang / Du, Ziang / Wågberg, Thomas / Hu, Guangzhi

    Journal of Colloid And Interface Science.

    2023  

    Abstract: The advancement of bifunctional oxygen catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is imperative yet challenging for the optimization of Zn-air batteries. In this study, we reported the successful incorporation of a ... ...

    Abstract The advancement of bifunctional oxygen catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is imperative yet challenging for the optimization of Zn-air batteries. In this study, we reported the successful incorporation of a novel Mott-Schottky catalytic site within a MnO-FeCo heterojunction into an N-doping carbon nanobox, taking into consideration the effects of the intrinsic electric field and hollow/porous support carriers for electrocatalyst design. As expected, the resulting heterogeneous catalyst exhibited an encouraging half-wave potential of 0.88 V and an impressive limiting-current density of 5.62 mA/cm² for the ORR, as well as a minimal overpotential of 271 mV at 10 mA/cm² for the OER, both in alkaline conditions. Furthermore, the Zn-air battery constructed with the heterojunction nanobox product displayed a decent potential gap of 0.621 V, an outstanding power density of 253 mW/cm², a considerable specific capacity of 761 mAh/gZₙ, and exceptional stability, with up to 336 hours of cycling charging and discharging operation. Consequently, this method of modulating the catalyst's surface charge distribution through an internal electric field at the interface and facilitating mass transport offers a novel avenue for the development of robust bifunctional oxygen catalysts.
    Keywords active sites ; batteries ; carbon ; catalysts ; electric field ; electrochemistry ; mass transfer ; oxygen ; oxygen production ; Mott-Schottky heterojunction ; Charge rearrangement ; Oxygen reduction reaction ; Oxygen evolution reaction ; Zn-air battery
    Language English
    Publishing place Elsevier Inc.
    Document type Article ; Online
    Note Pre-press version
    ZDB-ID 241597-5
    ISSN 1095-7103 ; 0021-9797
    ISSN (online) 1095-7103
    ISSN 0021-9797
    DOI 10.1016/j.jcis.2023.07.101
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    In stock of ZB MED Bonn / Germany

    Z 71/707: Show issues

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  4. Article: Stainless Steel as A Bi-Functional Electrocatalyst-A Top-Down Approach.

    Ekspong, Joakim / Wågberg, Thomas

    Materials (Basel, Switzerland)

    2019  Volume 12, Issue 13

    Abstract: For a hydrogen economy to be viable, clean and economical hydrogen production methods are vital. Electrolysis of water is a promising hydrogen production technique with zero emissions, but suffer from relatively high production costs. In order to make ... ...

    Abstract For a hydrogen economy to be viable, clean and economical hydrogen production methods are vital. Electrolysis of water is a promising hydrogen production technique with zero emissions, but suffer from relatively high production costs. In order to make electrolysis of water sustainable, abundant, and efficient materials has to replace expensive and scarce noble metals as electrocatalysts in the reaction cells. Herein, we study activated stainless steel as a bi-functional electrocatalyst for the full water splitting reaction by taking advantage of nickel and iron suppressed within the bulk. The final electrocatalyst consists of a stainless steel mesh with a modified surface of layered NiFe nanosheets. By using a top down approach, the nanosheets stay well anchored to the surface and maintain an excellent electrical connection to the bulk structure. At ambient temperature, the activated stainless steel electrodes produce 10 mA/cm
    Language English
    Publishing date 2019-07-02
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma12132128
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  5. Article: Fluoride releasing in polymer blends of poly(ethylene oxide) and poly(methyl methacrylate).

    Wang, Tianxiao / Li, Menghong / Gu, Ziyan / Qu, Chengjuan / Segervald, Jonas / Salh, Roushdey / Wågberg, Thomas / Wang, Jia / Kou, Wen

    Frontiers in chemistry

    2024  Volume 12, Page(s) 1356029

    Abstract: Introduction: ...

    Abstract Introduction:
    Language English
    Publishing date 2024-02-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2711776-5
    ISSN 2296-2646
    ISSN 2296-2646
    DOI 10.3389/fchem.2024.1356029
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Low-temperature molten-salt synthesis of Co

    Hao, Chenglin / Rao, Fengling / Zhang, Yunqiu / Wang, Huaisheng / Chen, Jianbin / Wågberg, Thomas / Hu, Guangzhi

    Environmental pollution (Barking, Essex : 1987)

    2023  Volume 334, Page(s) 121811

    Abstract: We further developed previous work on MXene materials prepared using molten salt methodology. We substituted single, with mixed salts, and reduced the melting point from >724 °C to <360 °C. Cobalt (Co) compounds were simultaneously etched and doped while ...

    Abstract We further developed previous work on MXene materials prepared using molten salt methodology. We substituted single, with mixed salts, and reduced the melting point from >724 °C to <360 °C. Cobalt (Co) compounds were simultaneously etched and doped while the MXene material was created using various techniques in which Co compounds occur as Co
    MeSH term(s) Ornidazole ; Temperature ; Peroxides/chemistry ; Cobalt/chemistry ; Nanoparticles/chemistry ; Sodium Chloride
    Chemical Substances peroxymonosulfate (22047-43-4) ; cobalt tetraoxide ; Ornidazole (62XCK0G93T) ; MXene ; Peroxides ; Cobalt (3G0H8C9362) ; Sodium Chloride (451W47IQ8X)
    Language English
    Publishing date 2023-05-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 280652-6
    ISSN 1873-6424 ; 0013-9327 ; 0269-7491
    ISSN (online) 1873-6424
    ISSN 0013-9327 ; 0269-7491
    DOI 10.1016/j.envpol.2023.121811
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2599: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  7. Article ; Online: A macroporous carbon nanoframe for hosting Mott-Schottky Fe-Co/Mo

    Hong, Jie / Zhang, Lei / Zhu, Qiliang / Du, Ziang / Zhou, Yingtang / Wågberg, Thomas / Hu, Guangzhi

    Materials horizons

    2023  Volume 10, Issue 12, Page(s) 5969–5982

    Abstract: Simultaneously optimizing the d-band center of the catalyst and the mass/charge transport processes during the oxygen catalytic reaction is an essential but arduous task in the pursuit of creating effective and long-lasting bifunctional oxygen catalysts. ...

    Abstract Simultaneously optimizing the d-band center of the catalyst and the mass/charge transport processes during the oxygen catalytic reaction is an essential but arduous task in the pursuit of creating effective and long-lasting bifunctional oxygen catalysts. In this study, a Fe-Co/Mo
    Language English
    Publishing date 2023-11-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 2744250-0
    ISSN 2051-6355 ; 2051-6347
    ISSN (online) 2051-6355
    ISSN 2051-6347
    DOI 10.1039/d3mh01237a
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  8. Article ; Online: Copper nanoparticle-decorated nitrogen-doped carbon nanosheets for electrochemical determination of paraquat.

    Zhou, Jie / Zhao, Zongshan / Zhao, Xue / Toan, Sam / Wang, Lei / Wågberg, Thomas / Hu, Guangzhi

    Mikrochimica acta

    2023  Volume 190, Issue 7, Page(s) 252

    Abstract: A new strategy to prepare copper (Cu) nanoparticles anchored in nitrogen-doped carbon nanosheets (Cu@CN) has been designed and the nanomaterial applied to the determination of paraquat (PQ). The nanocomposite materials were characterized by transmission ... ...

    Abstract A new strategy to prepare copper (Cu) nanoparticles anchored in nitrogen-doped carbon nanosheets (Cu@CN) has been designed and the nanomaterial applied to the determination of paraquat (PQ). The nanocomposite materials were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and several other techniques. We found that the Cu nanoparticles are uniformly distributed on the carbon materials, providing abundant active sites for electrochemical detection. The electrochemical behavior of the Cu@CN-based PQ sensor was investigated by square-wave voltammetry (SWV). Cu@CN exhibited excellent electrochemical activity and PQ detection performance. The Cu@CN-modified glassy carbon electrode (Cu@CN/GCE) exhibited excellent stability, favorable sensitivity, and high selectivity under optimized conditions (enrichment voltage -0.1 V and enrichment time 400 s) of the SWV test. The detection range reached 0.50 nM to 12.00 μM, and the limit of detection was 0.43 nM with high sensitivity of 18 μA·μM
    Language English
    Publishing date 2023-06-07
    Publishing country Austria
    Document type Journal Article
    ZDB-ID 89-9
    ISSN 1436-5073 ; 0026-3672
    ISSN (online) 1436-5073
    ISSN 0026-3672
    DOI 10.1007/s00604-023-05812-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Z 56/171: Show issues
    Z 8.1: Show issues

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  9. Article ; Online: Interface engineering induced charge rearrangement boosting reversible oxygen electrocatalysis activity of heterogeneous FeCo-MnO@N-doped carbon nanobox.

    Ye, Ying / Zhang, Lei / Zhu, Qiliang / Du, Ziang / Wågberg, Thomas / Hu, Guangzhi

    Journal of colloid and interface science

    2023  Volume 650, Issue Pt B, Page(s) 1350–1360

    Abstract: The advancement of bifunctional oxygen catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is imperative yet challenging for the optimization of Zn-air batteries. In this study, we reported the successful incorporation of a ... ...

    Abstract The advancement of bifunctional oxygen catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is imperative yet challenging for the optimization of Zn-air batteries. In this study, we reported the successful incorporation of a novel Mott-Schottky catalytic site within a MnO-FeCo heterojunction into an N-doping carbon nanobox, taking into consideration the effects of the intrinsic electric field and hollow/porous support carriers for electrocatalyst design. As expected, the resulting heterogeneous catalyst exhibited an encouraging half-wave potential of 0.88 V and an impressive limiting-current density of 5.62 mA/cm
    Language English
    Publishing date 2023-07-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 241597-5
    ISSN 1095-7103 ; 0021-9797
    ISSN (online) 1095-7103
    ISSN 0021-9797
    DOI 10.1016/j.jcis.2023.07.101
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  10. Article ; Online: Corrigendum to "Three-dimensional porous high boron-nitrogen-doped carbon for the ultrasensitive electrochemical detection of trace heavy metals in food samples" [J Hazard Mater (2023) 442 130020].

    Huang, Ruihua / Lv, Jiapei / Chen, Jianbing / Zhu, Yeling / Zhu, Jian / Wågberg, Thomas / Hu, Guangzhi

    Journal of hazardous materials

    2023  Volume 456, Page(s) 131638

    Language English
    Publishing date 2023-05-25
    Publishing country Netherlands
    Document type Published Erratum
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2023.131638
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