Probing effective photocorrosion inhibition and highly improved photocatalytic hydrogen production on monodisperse PANI@CdS core-shell nanospheres

Chao Wang, Li Wang, Jun Jin, Jing Liu, Yu Li, Min Wu, Lihua Chen, Binjie Wang, Xiaoyu Yang, Bao Lian Su

Résultats de recherche: Recherche - Revue par des pairsArticle

Résumé

CdS is a very good visible-light responsive photocatalyst for hydrogen production. However, the fast recombination of photogenerated electron-hole pairs and quick photocorrosion limit its application in photocatalysis. To address these problems, we herein have designed and synthesized monodisperse polyaniline@cadmium sulfide (PANI@CdS) core-shell nanospheres to probe the mechanisms of photocorrosion inhibition and photocatalytic H2 production. All the PANI@CdS core-shell nanospheres demonstrate highly enhanced photocorrosion inhibition and photocatalytic hydrogen production comparing to the pure CdS nanospheres. Particularly, the PANI@CdS core-shell nanospheres with the thinnest PANI shell possess the highest hydrogen production rate of 310 μmol h-1 g-1 in 30 h without deactivation. Our results reveal that the newly formed CS and/or NCd bonds in PANI@CdS prevent the reduction of the surface sulfide ions to sulphur, leading to effective photocorrosion inhibition. Our results also verify that the photogenerated holes migrating from valence band (VB) of CdS to the highest occupied molecular orbital (HOMO) of PANI leads to the enhanced photocatalytic hydrogen production. This work can shed some light on the mechanism of conducting polymers modifying metal sulfides for effective photocorrosion inhibition and highly enhanced photocatalytic activities.

langueAnglais
Pages351-359
Nombre de pages9
journalApplied Catalysis B: Environmental
Volume188
Les DOIs
étatPublié - 5 juil. 2016

Empreinte digitale

Cadmium sulfide
Nanospheres
Polyaniline
Hydrogen production
cadmium sulfide
polyaniline
cadmium
sulfide
hydrogen
shell
Sulfides
Photocatalysis
Conducting polymers
Molecular orbitals
Photocatalysts
Valence bands
Sulfur
Electrons
Ions
Metals

mots-clés

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    title = "Probing effective photocorrosion inhibition and highly improved photocatalytic hydrogen production on monodisperse PANI@CdS core-shell nanospheres",
    abstract = "CdS is a very good visible-light responsive photocatalyst for hydrogen production. However, the fast recombination of photogenerated electron-hole pairs and quick photocorrosion limit its application in photocatalysis. To address these problems, we herein have designed and synthesized monodisperse polyaniline@cadmium sulfide (PANI@CdS) core-shell nanospheres to probe the mechanisms of photocorrosion inhibition and photocatalytic H2 production. All the PANI@CdS core-shell nanospheres demonstrate highly enhanced photocorrosion inhibition and photocatalytic hydrogen production comparing to the pure CdS nanospheres. Particularly, the PANI@CdS core-shell nanospheres with the thinnest PANI shell possess the highest hydrogen production rate of 310 μmol h-1 g-1 in 30 h without deactivation. Our results reveal that the newly formed CS and/or NCd bonds in PANI@CdS prevent the reduction of the surface sulfide ions to sulphur, leading to effective photocorrosion inhibition. Our results also verify that the photogenerated holes migrating from valence band (VB) of CdS to the highest occupied molecular orbital (HOMO) of PANI leads to the enhanced photocatalytic hydrogen production. This work can shed some light on the mechanism of conducting polymers modifying metal sulfides for effective photocorrosion inhibition and highly enhanced photocatalytic activities.",
    keywords = "CdS, Core-shell nanospheres, PANI, Photocatalytic hydrogen production, Photocorrosion inhibition",
    author = "Chao Wang and Li Wang and Jun Jin and Jing Liu and Yu Li and Min Wu and Lihua Chen and Binjie Wang and Xiaoyu Yang and Su, {Bao Lian}",
    year = "2016",
    month = "7",
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    volume = "188",
    pages = "351--359",
    journal = "Applied Catalysis B Environmental",
    issn = "0926-3373",
    publisher = "Elsevier",

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    Probing effective photocorrosion inhibition and highly improved photocatalytic hydrogen production on monodisperse PANI@CdS core-shell nanospheres. / Wang, Chao; Wang, Li; Jin, Jun; Liu, Jing; Li, Yu; Wu, Min; Chen, Lihua; Wang, Binjie; Yang, Xiaoyu; Su, Bao Lian.

    Dans: Applied Catalysis B: Environmental, Vol 188, 05.07.2016, p. 351-359.

    Résultats de recherche: Recherche - Revue par des pairsArticle

    TY - JOUR

    T1 - Probing effective photocorrosion inhibition and highly improved photocatalytic hydrogen production on monodisperse PANI@CdS core-shell nanospheres

    AU - Wang,Chao

    AU - Wang,Li

    AU - Jin,Jun

    AU - Liu,Jing

    AU - Li,Yu

    AU - Wu,Min

    AU - Chen,Lihua

    AU - Wang,Binjie

    AU - Yang,Xiaoyu

    AU - Su,Bao Lian

    PY - 2016/7/5

    Y1 - 2016/7/5

    N2 - CdS is a very good visible-light responsive photocatalyst for hydrogen production. However, the fast recombination of photogenerated electron-hole pairs and quick photocorrosion limit its application in photocatalysis. To address these problems, we herein have designed and synthesized monodisperse polyaniline@cadmium sulfide (PANI@CdS) core-shell nanospheres to probe the mechanisms of photocorrosion inhibition and photocatalytic H2 production. All the PANI@CdS core-shell nanospheres demonstrate highly enhanced photocorrosion inhibition and photocatalytic hydrogen production comparing to the pure CdS nanospheres. Particularly, the PANI@CdS core-shell nanospheres with the thinnest PANI shell possess the highest hydrogen production rate of 310 μmol h-1 g-1 in 30 h without deactivation. Our results reveal that the newly formed CS and/or NCd bonds in PANI@CdS prevent the reduction of the surface sulfide ions to sulphur, leading to effective photocorrosion inhibition. Our results also verify that the photogenerated holes migrating from valence band (VB) of CdS to the highest occupied molecular orbital (HOMO) of PANI leads to the enhanced photocatalytic hydrogen production. This work can shed some light on the mechanism of conducting polymers modifying metal sulfides for effective photocorrosion inhibition and highly enhanced photocatalytic activities.

    AB - CdS is a very good visible-light responsive photocatalyst for hydrogen production. However, the fast recombination of photogenerated electron-hole pairs and quick photocorrosion limit its application in photocatalysis. To address these problems, we herein have designed and synthesized monodisperse polyaniline@cadmium sulfide (PANI@CdS) core-shell nanospheres to probe the mechanisms of photocorrosion inhibition and photocatalytic H2 production. All the PANI@CdS core-shell nanospheres demonstrate highly enhanced photocorrosion inhibition and photocatalytic hydrogen production comparing to the pure CdS nanospheres. Particularly, the PANI@CdS core-shell nanospheres with the thinnest PANI shell possess the highest hydrogen production rate of 310 μmol h-1 g-1 in 30 h without deactivation. Our results reveal that the newly formed CS and/or NCd bonds in PANI@CdS prevent the reduction of the surface sulfide ions to sulphur, leading to effective photocorrosion inhibition. Our results also verify that the photogenerated holes migrating from valence band (VB) of CdS to the highest occupied molecular orbital (HOMO) of PANI leads to the enhanced photocatalytic hydrogen production. This work can shed some light on the mechanism of conducting polymers modifying metal sulfides for effective photocorrosion inhibition and highly enhanced photocatalytic activities.

    KW - CdS

    KW - Core-shell nanospheres

    KW - PANI

    KW - Photocatalytic hydrogen production

    KW - Photocorrosion inhibition

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    U2 - 10.1016/j.apcatb.2016.02.017

    DO - 10.1016/j.apcatb.2016.02.017

    M3 - Article

    VL - 188

    SP - 351

    EP - 359

    JO - Applied Catalysis B Environmental

    T2 - Applied Catalysis B Environmental

    JF - Applied Catalysis B Environmental

    SN - 0926-3373

    ER -