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  1. Article ; Online: Interfacial construction of P25/Bi

    Liu, Daohan / Zeng, Minli / Li, Zhen / Zhu, Zhiqi / Chen, Yu / Thummavichai, Kunyapat / Ola, Oluwafunmilola / Wang, Nannan / Zhu, Yanqiu

    RSC advances

    2023  Volume 13, Issue 13, Page(s) 8564–8576

    Abstract: Photocatalysis provides an attractive approach to convert ... ...

    Abstract Photocatalysis provides an attractive approach to convert CO
    Language English
    Publishing date 2023-03-14
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d3ra00418j
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Activating Surface Lattice Oxygen of a Cu/Zn₁–ₓCuₓO Catalyst through Interface Interactions for CO Oxidation

    Zeng, Minli / Wang, Xiyang / Yang, Qilei / Chu, Xuefeng / Chen, Zuolong / Li, Zhen / Redshaw, Carl / Wang, Chao / Peng, Yue / Wang, Nannan / Zhu, Yanqiu / Wu, Yimin A.

    ACS applied materials & interfaces. 2022 Feb. 10, v. 14, no. 7

    2022  

    Abstract: Surface lattice oxygen in metal oxides is a common participant in many chemical reactions. Given this, the structural design of catalysts to activate lattice oxygen and moreover investigations into the effect of lattice oxygen on reaction pathways are ... ...

    Abstract Surface lattice oxygen in metal oxides is a common participant in many chemical reactions. Given this, the structural design of catalysts to activate lattice oxygen and moreover investigations into the effect of lattice oxygen on reaction pathways are hot topics. With this in mind, herein we prepare CuO–Zn₁–ₓCuₓO (ZCO) nanofibers akin to the Trojan horse legend and via an in situ reduction obtain activated Cu/Zn₁–ₓCuₓO (Cu/ZCO) nanofibers. X-ray absorption spectroscopy and X-ray photoelectron spectroscopy reveal that surface lattice oxygen of Cu/ZCO is effectively activated from inert O²– to reactive O²–ˣ. This activation stems from the enhanced covalence of metal–oxygen bonds and the electron transfer between Cu and the support. Online mass spectrometry reveals that Cu/ZCO with activated lattice oxygen exhibits a higher Mars–van Krevelen reaction efficiency during the CO oxidation process. This study offers a new avenue to engineer interface interactions, given, as highlighted here, the importance of surface lattice oxygen in oxide supports during the catalytic process.
    Keywords X-ray absorption spectroscopy ; X-ray photoelectron spectroscopy ; catalysts ; catalytic activity ; electron transfer ; mass spectrometry ; nanofibers ; oxidation ; oxygen
    Language English
    Dates of publication 2022-0210
    Size p. 9882-9890.
    Publishing place American Chemical Society
    Document type Article
    ISSN 1944-8252
    DOI 10.1021/acsami.1c24321
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: The interplay between selective etching induced cation defects and active oxygen species for volatile organic compounds degradation

    Li, Zhen / Wang, Xiyang / Zeng, Minli / Chen, Kunyu / Cao, Dehua / Huang, Yiwei / Zhu, Yanqiu / Zhang, Wenhua / Wang, Nannan / Wu, Yimin A.

    Journal of colloid and interface science. 2022 Nov., v. 625

    2022  

    Abstract: Surface electronic structure of transition metal oxides plays a vital role in determining the catalytic performance. Herein, we present a selective etching strategy to tune the surface cation defect of the CuWO₄ (CW) catalyst for improving the catalytic ... ...

    Abstract Surface electronic structure of transition metal oxides plays a vital role in determining the catalytic performance. Herein, we present a selective etching strategy to tune the surface cation defect of the CuWO₄ (CW) catalyst for improving the catalytic activity of volatile organic compounds (VOCs). HRTEM, SEM-EDS, EPR, and XPS show that the chelation of metal ions in acetic acid and ammonium hydroxide can help to remove a small number of surface cations in CW to form suitable W defects. Cu L-edge and O K-edge XAS, Raman, and O 1s XPS spectrum illustrate that cation defects can improve the hybrid orbits of metal-oxygen bonds, which increases the activity of surface lattice oxygen and metal sites. In-situ DRIFTS spectra reveal that CW with cation defects can easily adsorb toluene, cleave and oxidize benzene ring, and desorb CO₂ because of more surface dangling bonds and active oxygen species. Therefore, the toluene conversion rates of CW-Aci and CW-Alk are much higher than CW in VOCs degradation and the catalytic performance improved 33 times and 22 times at 200 °C, respectively. This study offers a new pathway in engineering surface electronic structure and highlights the interplay between cation defects and active oxygen species.
    Keywords acetic acid ; active oxygen species ; ammonium hydroxide ; benzene ; carbon dioxide ; catalysts ; catalytic activity ; cations ; chelation ; oxygen ; toluene ; volatile organic compounds
    Language English
    Dates of publication 2022-11
    Size p. 363-372.
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 241597-5
    ISSN 1095-7103 ; 0021-9797
    ISSN (online) 1095-7103
    ISSN 0021-9797
    DOI 10.1016/j.jcis.2022.06.037
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  4. Article ; Online: Study on the mechanism of tunable ferromagnetic composites with different rare earth ions.

    Zeng, Minli / Thummavichai, Kunyapat / Chen, Wenting / Liu, Guangsheng / Li, Zhen / Chen, Xiaorong / Feng, Chen / Li, Yi / Wang, Nannan / Zhu, Yanqiu

    RSC advances

    2021  Volume 11, Issue 59, Page(s) 37246–37253

    Abstract: Size-controlled ... ...

    Abstract Size-controlled Fe
    Language English
    Publishing date 2021-11-18
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d1ra07249h
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Defect-Rich Heterogeneous MoS

    Liu, Guangsheng / Thummavichai, Kunyapat / Lv, Xuefeng / Chen, Wenting / Lin, Tingjun / Tan, Shipeng / Zeng, Minli / Chen, Yu / Wang, Nannan / Zhu, Yanqiu

    Nanomaterials (Basel, Switzerland)

    2021  Volume 11, Issue 3

    Abstract: Molybdenum disulfide ( ... ...

    Abstract Molybdenum disulfide (MoS
    Language English
    Publishing date 2021-03-08
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano11030662
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Study on the mechanism of tunable ferromagnetic composites with different rare earth ions

    Zeng, Minli / Thummavichai, Kunyapat / Chen, Wenting / Liu, Guangsheng / Li, Zhen / Chen, Xiaorong / Feng, Chen / Li, Yi / Wang, Nannan / Zhu, Yanqiu

    RSC advances. 2021 Nov. 18, v. 11, no. 59

    2021  

    Abstract: Size-controlled Fe₃O₄ nanoparticles doped with rare earth (RE) ions (La³⁺, Ce³⁺, and Dy³⁺) varying from 15 nm to 30 nm were successful synthesized by a hydrothermal method for potential applications in the fields of biomedicine, environmental protection ... ...

    Abstract Size-controlled Fe₃O₄ nanoparticles doped with rare earth (RE) ions (La³⁺, Ce³⁺, and Dy³⁺) varying from 15 nm to 30 nm were successful synthesized by a hydrothermal method for potential applications in the fields of biomedicine, environmental protection and magnetic memory devices. They possessed good dispersibility, adjustable particle size and nearly spherical shape. The particle grain size was uniformly distributed and showed a low degree of agglomeration in comparison with undoped Fe₃O₄ nanoparticles. The FTIR results showed that the RE elements partially replaced Fe²⁺, occupied the octahedral position, and enhanced the vibration of the Fe–O bond. The XPS study further revealed that the valence states of La, Ce, and Dy are both positive trivalent. The XPS Fe 2p valence band spectra observed a shift in the peak position toward higher binding energy after RE doping, confirming the existence of RE ions in the octahedral position. This paper explains the mechanism of rare earth doping with Fe₃O₄, and clarifies the influence of the doping of different RE ions on its magnetic properties. The detailed analysis of RE-doped ferrite materials can open a new perspective in designing biomedical and spintronics materials with tailored properties by choosing suitable cation substitution.
    Keywords cations ; dispersibility ; energy ; environmental protection ; ferrimagnetic materials ; ferromagnetism ; hot water treatment ; medicine ; memory ; particle size ; vibration
    Language English
    Dates of publication 2021-1118
    Size p. 37246-37253.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ISSN 2046-2069
    DOI 10.1039/d1ra07249h
    Database NAL-Catalogue (AGRICOLA)

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  7. Article: Engineering surface segregation of perovskite oxide through wet exsolution for CO catalytic oxidation

    Li, Zhen / Wang, Xiyang / Li, Xinbo / Zeng, Minli / Redshaw, Carl / Cao, Rui / Sarangi, Ritimukta / Hou, Changmin / Chen, Zuolong / Zhang, Wenhua / Wang, Nannan / Wu, Xiaofeng / Zhu, Yanqiu / Wu, Yimin A.

    Journal of hazardous materials. 2022 Aug. 15, v. 436

    2022  

    Abstract: Cation segregation occurring near the surface or interfaces of solid catalysts plays an important role in catalytic reactions. Unfortunately, the native surface of perovskite oxides is dominated by passivated A-site segregation, which severely hampers ... ...

    Abstract Cation segregation occurring near the surface or interfaces of solid catalysts plays an important role in catalytic reactions. Unfortunately, the native surface of perovskite oxides is dominated by passivated A-site segregation, which severely hampers the catalytic activity and durability of the system. To address this issue, herein, we present a wet exsolution method to reconstruct surface segregation in perovskite cobalt oxide. Under reduction etching treatment of glycol solution, inert surface Sr segregation was transformed into active Co₃O₄ segregation. By varying the reaction time, we achieved differing coverage of the active Co₃O₄ segregation on the La₀.₅Sr₀.₅CoO₃₋δ (LSCO) perovskite oxide surface. This study reveals that CO oxidation activity exhibits a volcano-shaped dependence on the coverage of Co₃O₄ segregation at the surface of a perovskite cobalt oxide. Furthermore, we find that a suitable coverage of Co₃O₄ segregation can dramatically improve the catalytic activity of the perovskite catalyst by enhancing interface interactions. Co K-edge, Co L-edge, and O K-edge X-ray absorption spectra confirm that the synergistic effect optimizes the covalence of the metal-oxygen bond at the surface and interface. This work not only contributes to the design and development of perovskite-type catalysts, but also provides important insight into the relationship between surface segregation and catalytic activity.
    Keywords X-radiation ; absorption ; catalysts ; catalytic activity ; cations ; cobalt oxide ; durability ; oxidation ; synergism
    Language English
    Dates of publication 2022-0815
    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.2022.129110
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  8. Article ; Online: Activating Surface Lattice Oxygen of a Cu/Zn

    Zeng, Minli / Wang, Xiyang / Yang, Qilei / Chu, Xuefeng / Chen, Zuolong / Li, Zhen / Redshaw, Carl / Wang, Chao / Peng, Yue / Wang, Nannan / Zhu, Yanqiu / Wu, Yimin A

    ACS applied materials & interfaces

    2022  Volume 14, Issue 7, Page(s) 9882–9890

    Abstract: Surface lattice oxygen in metal oxides is a common participant in many chemical reactions. Given this, the structural design of catalysts to activate lattice oxygen and moreover investigations into the effect of lattice oxygen on reaction pathways are ... ...

    Abstract Surface lattice oxygen in metal oxides is a common participant in many chemical reactions. Given this, the structural design of catalysts to activate lattice oxygen and moreover investigations into the effect of lattice oxygen on reaction pathways are hot topics. With this in mind, herein we prepare CuO-Zn
    Language English
    Publishing date 2022-02-10
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.1c24321
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The interplay between selective etching induced cation defects and active oxygen species for volatile organic compounds degradation.

    Li, Zhen / Wang, Xiyang / Zeng, Minli / Chen, Kunyu / Cao, Dehua / Huang, Yiwei / Zhu, Yanqiu / Zhang, Wenhua / Wang, Nannan / Wu, Yimin A

    Journal of colloid and interface science

    2022  Volume 625, Page(s) 363–372

    Abstract: Surface electronic structure of transition metal oxides plays a vital role in determining the catalytic performance. Herein, we present a selective etching strategy to tune the surface cation defect of the ... ...

    Abstract Surface electronic structure of transition metal oxides plays a vital role in determining the catalytic performance. Herein, we present a selective etching strategy to tune the surface cation defect of the CuWO
    Language English
    Publishing date 2022-06-09
    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.2022.06.037
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 71/707: Show issues

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  10. Article ; Online: Engineering surface segregation of perovskite oxide through wet exsolution for CO catalytic oxidation.

    Li, Zhen / Wang, Xiyang / Li, Xinbo / Zeng, Minli / Redshaw, Carl / Cao, Rui / Sarangi, Ritimukta / Hou, Changmin / Chen, Zuolong / Zhang, Wenhua / Wang, Nannan / Wu, Xiaofeng / Zhu, Yanqiu / Wu, Yimin A

    Journal of hazardous materials

    2022  Volume 436, Page(s) 129110

    Abstract: Cation segregation occurring near the surface or interfaces of solid catalysts plays an important role in catalytic reactions. Unfortunately, the native surface of perovskite oxides is dominated by passivated A-site segregation, which severely hampers ... ...

    Abstract Cation segregation occurring near the surface or interfaces of solid catalysts plays an important role in catalytic reactions. Unfortunately, the native surface of perovskite oxides is dominated by passivated A-site segregation, which severely hampers the catalytic activity and durability of the system. To address this issue, herein, we present a wet exsolution method to reconstruct surface segregation in perovskite cobalt oxide. Under reduction etching treatment of glycol solution, inert surface Sr segregation was transformed into active Co
    Language English
    Publishing date 2022-05-10
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2022.129110
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

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