Facile preparation of well-dispersed ZnO/cyclized polyacrylonitrile nanocomposites with highly enhanced visible-light photocatalytic activity
[Display omitted] •Well-dispersed ZnO/CPAN nanocomposites were prepared by in-situ method.•The presence of CPAN significantly decreases the mean size of ZnO nanocrystals.•The quantity of oxygen defects of ZnO obviously increases in ZnO/CPAN nanocomposites.•ZnO/CPAN nanocomposites exhibit excellent v...
Gespeichert in:
| Veröffentlicht in: | Applied catalysis. B, Environmental Environmental, 2017-05, Vol.204, p.304-315 |
|---|---|
| Hauptverfasser: | , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 315 |
|---|---|
| container_issue | |
| container_start_page | 304 |
| container_title | Applied catalysis. B, Environmental |
| container_volume | 204 |
| creator | Luo, Qingzhi Yang, Xiaolian Zhao, Xiaoxiao Wang, Desong Yin, Rong Li, Xueyan An, Jing |
| description | [Display omitted]
•Well-dispersed ZnO/CPAN nanocomposites were prepared by in-situ method.•The presence of CPAN significantly decreases the mean size of ZnO nanocrystals.•The quantity of oxygen defects of ZnO obviously increases in ZnO/CPAN nanocomposites.•ZnO/CPAN nanocomposites exhibit excellent visible-light photocatalytic activity.
Well-dispersed zinc oxide/cyclized polyacrylonitrile (ZnO/CPAN) nanocomposites were prepared by a facile in-situ precipitation method. The mixture solution of dimethyl sulfoxide containing zinc nitrate and polyacrylonitrile (PAN) was added dropwise into ammonia water under vigorous magnetic stirring. Accompanied by the precipitation of PAN in water, zinc hydroxide were simultaneously formed via in-situ reaction of zinc nitrate with hydroxyl ions, leading to the uniform dispersion of zinc hydroxide nanoparticles in the precursor of ZnO/PAN nanocomposites. Then ZnO/CPAN nanocomposites were prepared by calcining the obtained precursor at 250°C in nitrogen atmosphere via cyclization/dehydrogenation reaction of PAN and decomposition reaction of Zn(OH)2. The as-prepared ZnO/CPAN nanocomposites were characterized by XRD, SEM, XPS, UV–vis DRS, PL, etc. Results show that CPAN molecules in ZnO/CPAN nanocomposites significantly decrease the mean size of ZnO nanocrystals, increase the quantity of oxygen defects in ZnO particles, improve the absorbance of ZnO in the whole wavelength range especially in the visible-light range, and obviously reduce the recombination probability of photo-generated electron/hole pairs. The photocatalytic activity of ZnO/CPAN nanocomposites was evaluated by photodegradation of methyl orange (MO) solution under visible light irradiation. Experiment results reveal that the apparent rate constant k of MO photodegradation under visible light irradiation photocatalyzed by ZnO/CPAN (0.361h−1) is 1.28, 5.84 and 25.8 times of that by AgBr (0.282h−1), Ag3PO4 (0.0618h−1) or g–C3N4 (0.0140h−1), respectively, meaning that ZnO/CPAN exhibits much higher visible-light photocatalytic activity than these typical visible-light photocatalysts. The visible-light photocatalytic mechanism has been discussed. |
| doi_str_mv | 10.1016/j.apcatb.2016.11.037 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_1932192409</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0926337316309043</els_id><sourcerecordid>1932192409</sourcerecordid><originalsourceid>FETCH-LOGICAL-c371t-26fc07c79c1f114e4e783923f72165a4f052cc5d79d196d1107fd882697241db3</originalsourceid><addsrcrecordid>eNp9kM9u1DAQxi0EEkvhDThY4pzUY2fj-IKEKlqQKvUCFy6Wd-KQWblxsN2twjvwzni1nDmNvtH3zZ8fY-9BtCCgvz62bkVXDq2sqgVohdIv2A4GrRo1DOol2wkj-0YprV6zNzkfhRBSyWHH_tw6pOD5mvzqkisUFx4n_uxDaEbKq0_Zj_zH8nCNGwb6XcUaw-YwbSEuVNI5vLglYnxcY6biM3-mMvOZfs5h436Z3YI1daJMh-CbUPuFr3MssZ7swlYIucNCJyrbW_ZqciH7d__qFft--_nbzZfm_uHu682n-waVhtLIfkKhURuECaDzndeDMlJNWkK_d90k9hJxP2ozgulHAKGncRhkb7TsYDyoK_bhMndN8deTz8Ue41Na6koLRkkwshOmurqLC1PMOfnJrokeXdosCHsGb4_2At6ewVsAW8HX2MdLzNcPTuSTzUj-DIGSx2LHSP8f8BeZcZGH</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1932192409</pqid></control><display><type>article</type><title>Facile preparation of well-dispersed ZnO/cyclized polyacrylonitrile nanocomposites with highly enhanced visible-light photocatalytic activity</title><source>Elsevier ScienceDirect Journals</source><creator>Luo, Qingzhi ; Yang, Xiaolian ; Zhao, Xiaoxiao ; Wang, Desong ; Yin, Rong ; Li, Xueyan ; An, Jing</creator><creatorcontrib>Luo, Qingzhi ; Yang, Xiaolian ; Zhao, Xiaoxiao ; Wang, Desong ; Yin, Rong ; Li, Xueyan ; An, Jing</creatorcontrib><description>[Display omitted]
•Well-dispersed ZnO/CPAN nanocomposites were prepared by in-situ method.•The presence of CPAN significantly decreases the mean size of ZnO nanocrystals.•The quantity of oxygen defects of ZnO obviously increases in ZnO/CPAN nanocomposites.•ZnO/CPAN nanocomposites exhibit excellent visible-light photocatalytic activity.
Well-dispersed zinc oxide/cyclized polyacrylonitrile (ZnO/CPAN) nanocomposites were prepared by a facile in-situ precipitation method. The mixture solution of dimethyl sulfoxide containing zinc nitrate and polyacrylonitrile (PAN) was added dropwise into ammonia water under vigorous magnetic stirring. Accompanied by the precipitation of PAN in water, zinc hydroxide were simultaneously formed via in-situ reaction of zinc nitrate with hydroxyl ions, leading to the uniform dispersion of zinc hydroxide nanoparticles in the precursor of ZnO/PAN nanocomposites. Then ZnO/CPAN nanocomposites were prepared by calcining the obtained precursor at 250°C in nitrogen atmosphere via cyclization/dehydrogenation reaction of PAN and decomposition reaction of Zn(OH)2. The as-prepared ZnO/CPAN nanocomposites were characterized by XRD, SEM, XPS, UV–vis DRS, PL, etc. Results show that CPAN molecules in ZnO/CPAN nanocomposites significantly decrease the mean size of ZnO nanocrystals, increase the quantity of oxygen defects in ZnO particles, improve the absorbance of ZnO in the whole wavelength range especially in the visible-light range, and obviously reduce the recombination probability of photo-generated electron/hole pairs. The photocatalytic activity of ZnO/CPAN nanocomposites was evaluated by photodegradation of methyl orange (MO) solution under visible light irradiation. Experiment results reveal that the apparent rate constant k of MO photodegradation under visible light irradiation photocatalyzed by ZnO/CPAN (0.361h−1) is 1.28, 5.84 and 25.8 times of that by AgBr (0.282h−1), Ag3PO4 (0.0618h−1) or g–C3N4 (0.0140h−1), respectively, meaning that ZnO/CPAN exhibits much higher visible-light photocatalytic activity than these typical visible-light photocatalysts. The visible-light photocatalytic mechanism has been discussed.</description><identifier>ISSN: 0926-3373</identifier><identifier>EISSN: 1873-3883</identifier><identifier>DOI: 10.1016/j.apcatb.2016.11.037</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Absorbance ; Ammonia ; Calcination in nitrogen atmosphere ; Catalytic activity ; Chemical precipitation ; Crystals ; Decomposition reactions ; Dehydrogenation ; Dimethyl sulfoxide ; Dispersion ; Dyes ; Hydroxyl ions ; Light irradiation ; Nanocomposite ; Nanocomposites ; Nanocrystals ; Nanoparticles ; Nitrates ; Photocatalysis ; Photodegradation ; Polyacrylonitrile ; Radiation ; Recombination ; Visible light photocatalytic activity ; X ray photoelectron spectroscopy ; Zinc oxide ; Zinc oxides ; ZnO</subject><ispartof>Applied catalysis. B, Environmental, 2017-05, Vol.204, p.304-315</ispartof><rights>2016 Elsevier B.V.</rights><rights>Copyright Elsevier BV May 5, 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c371t-26fc07c79c1f114e4e783923f72165a4f052cc5d79d196d1107fd882697241db3</citedby><cites>FETCH-LOGICAL-c371t-26fc07c79c1f114e4e783923f72165a4f052cc5d79d196d1107fd882697241db3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0926337316309043$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Luo, Qingzhi</creatorcontrib><creatorcontrib>Yang, Xiaolian</creatorcontrib><creatorcontrib>Zhao, Xiaoxiao</creatorcontrib><creatorcontrib>Wang, Desong</creatorcontrib><creatorcontrib>Yin, Rong</creatorcontrib><creatorcontrib>Li, Xueyan</creatorcontrib><creatorcontrib>An, Jing</creatorcontrib><title>Facile preparation of well-dispersed ZnO/cyclized polyacrylonitrile nanocomposites with highly enhanced visible-light photocatalytic activity</title><title>Applied catalysis. B, Environmental</title><description>[Display omitted]
•Well-dispersed ZnO/CPAN nanocomposites were prepared by in-situ method.•The presence of CPAN significantly decreases the mean size of ZnO nanocrystals.•The quantity of oxygen defects of ZnO obviously increases in ZnO/CPAN nanocomposites.•ZnO/CPAN nanocomposites exhibit excellent visible-light photocatalytic activity.
Well-dispersed zinc oxide/cyclized polyacrylonitrile (ZnO/CPAN) nanocomposites were prepared by a facile in-situ precipitation method. The mixture solution of dimethyl sulfoxide containing zinc nitrate and polyacrylonitrile (PAN) was added dropwise into ammonia water under vigorous magnetic stirring. Accompanied by the precipitation of PAN in water, zinc hydroxide were simultaneously formed via in-situ reaction of zinc nitrate with hydroxyl ions, leading to the uniform dispersion of zinc hydroxide nanoparticles in the precursor of ZnO/PAN nanocomposites. Then ZnO/CPAN nanocomposites were prepared by calcining the obtained precursor at 250°C in nitrogen atmosphere via cyclization/dehydrogenation reaction of PAN and decomposition reaction of Zn(OH)2. The as-prepared ZnO/CPAN nanocomposites were characterized by XRD, SEM, XPS, UV–vis DRS, PL, etc. Results show that CPAN molecules in ZnO/CPAN nanocomposites significantly decrease the mean size of ZnO nanocrystals, increase the quantity of oxygen defects in ZnO particles, improve the absorbance of ZnO in the whole wavelength range especially in the visible-light range, and obviously reduce the recombination probability of photo-generated electron/hole pairs. The photocatalytic activity of ZnO/CPAN nanocomposites was evaluated by photodegradation of methyl orange (MO) solution under visible light irradiation. Experiment results reveal that the apparent rate constant k of MO photodegradation under visible light irradiation photocatalyzed by ZnO/CPAN (0.361h−1) is 1.28, 5.84 and 25.8 times of that by AgBr (0.282h−1), Ag3PO4 (0.0618h−1) or g–C3N4 (0.0140h−1), respectively, meaning that ZnO/CPAN exhibits much higher visible-light photocatalytic activity than these typical visible-light photocatalysts. The visible-light photocatalytic mechanism has been discussed.</description><subject>Absorbance</subject><subject>Ammonia</subject><subject>Calcination in nitrogen atmosphere</subject><subject>Catalytic activity</subject><subject>Chemical precipitation</subject><subject>Crystals</subject><subject>Decomposition reactions</subject><subject>Dehydrogenation</subject><subject>Dimethyl sulfoxide</subject><subject>Dispersion</subject><subject>Dyes</subject><subject>Hydroxyl ions</subject><subject>Light irradiation</subject><subject>Nanocomposite</subject><subject>Nanocomposites</subject><subject>Nanocrystals</subject><subject>Nanoparticles</subject><subject>Nitrates</subject><subject>Photocatalysis</subject><subject>Photodegradation</subject><subject>Polyacrylonitrile</subject><subject>Radiation</subject><subject>Recombination</subject><subject>Visible light photocatalytic activity</subject><subject>X ray photoelectron spectroscopy</subject><subject>Zinc oxide</subject><subject>Zinc oxides</subject><subject>ZnO</subject><issn>0926-3373</issn><issn>1873-3883</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kM9u1DAQxi0EEkvhDThY4pzUY2fj-IKEKlqQKvUCFy6Wd-KQWblxsN2twjvwzni1nDmNvtH3zZ8fY-9BtCCgvz62bkVXDq2sqgVohdIv2A4GrRo1DOol2wkj-0YprV6zNzkfhRBSyWHH_tw6pOD5mvzqkisUFx4n_uxDaEbKq0_Zj_zH8nCNGwb6XcUaw-YwbSEuVNI5vLglYnxcY6biM3-mMvOZfs5h436Z3YI1daJMh-CbUPuFr3MssZ7swlYIucNCJyrbW_ZqciH7d__qFft--_nbzZfm_uHu682n-waVhtLIfkKhURuECaDzndeDMlJNWkK_d90k9hJxP2ozgulHAKGncRhkb7TsYDyoK_bhMndN8deTz8Ue41Na6koLRkkwshOmurqLC1PMOfnJrokeXdosCHsGb4_2At6ewVsAW8HX2MdLzNcPTuSTzUj-DIGSx2LHSP8f8BeZcZGH</recordid><startdate>20170505</startdate><enddate>20170505</enddate><creator>Luo, Qingzhi</creator><creator>Yang, Xiaolian</creator><creator>Zhao, Xiaoxiao</creator><creator>Wang, Desong</creator><creator>Yin, Rong</creator><creator>Li, Xueyan</creator><creator>An, Jing</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7ST</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>L7M</scope><scope>SOI</scope></search><sort><creationdate>20170505</creationdate><title>Facile preparation of well-dispersed ZnO/cyclized polyacrylonitrile nanocomposites with highly enhanced visible-light photocatalytic activity</title><author>Luo, Qingzhi ; Yang, Xiaolian ; Zhao, Xiaoxiao ; Wang, Desong ; Yin, Rong ; Li, Xueyan ; An, Jing</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c371t-26fc07c79c1f114e4e783923f72165a4f052cc5d79d196d1107fd882697241db3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Absorbance</topic><topic>Ammonia</topic><topic>Calcination in nitrogen atmosphere</topic><topic>Catalytic activity</topic><topic>Chemical precipitation</topic><topic>Crystals</topic><topic>Decomposition reactions</topic><topic>Dehydrogenation</topic><topic>Dimethyl sulfoxide</topic><topic>Dispersion</topic><topic>Dyes</topic><topic>Hydroxyl ions</topic><topic>Light irradiation</topic><topic>Nanocomposite</topic><topic>Nanocomposites</topic><topic>Nanocrystals</topic><topic>Nanoparticles</topic><topic>Nitrates</topic><topic>Photocatalysis</topic><topic>Photodegradation</topic><topic>Polyacrylonitrile</topic><topic>Radiation</topic><topic>Recombination</topic><topic>Visible light photocatalytic activity</topic><topic>X ray photoelectron spectroscopy</topic><topic>Zinc oxide</topic><topic>Zinc oxides</topic><topic>ZnO</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Luo, Qingzhi</creatorcontrib><creatorcontrib>Yang, Xiaolian</creatorcontrib><creatorcontrib>Zhao, Xiaoxiao</creatorcontrib><creatorcontrib>Wang, Desong</creatorcontrib><creatorcontrib>Yin, Rong</creatorcontrib><creatorcontrib>Li, Xueyan</creatorcontrib><creatorcontrib>An, Jing</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Environment Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Applied catalysis. B, Environmental</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Luo, Qingzhi</au><au>Yang, Xiaolian</au><au>Zhao, Xiaoxiao</au><au>Wang, Desong</au><au>Yin, Rong</au><au>Li, Xueyan</au><au>An, Jing</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Facile preparation of well-dispersed ZnO/cyclized polyacrylonitrile nanocomposites with highly enhanced visible-light photocatalytic activity</atitle><jtitle>Applied catalysis. B, Environmental</jtitle><date>2017-05-05</date><risdate>2017</risdate><volume>204</volume><spage>304</spage><epage>315</epage><pages>304-315</pages><issn>0926-3373</issn><eissn>1873-3883</eissn><abstract>[Display omitted]
•Well-dispersed ZnO/CPAN nanocomposites were prepared by in-situ method.•The presence of CPAN significantly decreases the mean size of ZnO nanocrystals.•The quantity of oxygen defects of ZnO obviously increases in ZnO/CPAN nanocomposites.•ZnO/CPAN nanocomposites exhibit excellent visible-light photocatalytic activity.
Well-dispersed zinc oxide/cyclized polyacrylonitrile (ZnO/CPAN) nanocomposites were prepared by a facile in-situ precipitation method. The mixture solution of dimethyl sulfoxide containing zinc nitrate and polyacrylonitrile (PAN) was added dropwise into ammonia water under vigorous magnetic stirring. Accompanied by the precipitation of PAN in water, zinc hydroxide were simultaneously formed via in-situ reaction of zinc nitrate with hydroxyl ions, leading to the uniform dispersion of zinc hydroxide nanoparticles in the precursor of ZnO/PAN nanocomposites. Then ZnO/CPAN nanocomposites were prepared by calcining the obtained precursor at 250°C in nitrogen atmosphere via cyclization/dehydrogenation reaction of PAN and decomposition reaction of Zn(OH)2. The as-prepared ZnO/CPAN nanocomposites were characterized by XRD, SEM, XPS, UV–vis DRS, PL, etc. Results show that CPAN molecules in ZnO/CPAN nanocomposites significantly decrease the mean size of ZnO nanocrystals, increase the quantity of oxygen defects in ZnO particles, improve the absorbance of ZnO in the whole wavelength range especially in the visible-light range, and obviously reduce the recombination probability of photo-generated electron/hole pairs. The photocatalytic activity of ZnO/CPAN nanocomposites was evaluated by photodegradation of methyl orange (MO) solution under visible light irradiation. Experiment results reveal that the apparent rate constant k of MO photodegradation under visible light irradiation photocatalyzed by ZnO/CPAN (0.361h−1) is 1.28, 5.84 and 25.8 times of that by AgBr (0.282h−1), Ag3PO4 (0.0618h−1) or g–C3N4 (0.0140h−1), respectively, meaning that ZnO/CPAN exhibits much higher visible-light photocatalytic activity than these typical visible-light photocatalysts. The visible-light photocatalytic mechanism has been discussed.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.apcatb.2016.11.037</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0926-3373 |
| ispartof | Applied catalysis. B, Environmental, 2017-05, Vol.204, p.304-315 |
| issn | 0926-3373 1873-3883 |
| language | eng |
| recordid | cdi_proquest_journals_1932192409 |
| source | Elsevier ScienceDirect Journals |
| subjects | Absorbance Ammonia Calcination in nitrogen atmosphere Catalytic activity Chemical precipitation Crystals Decomposition reactions Dehydrogenation Dimethyl sulfoxide Dispersion Dyes Hydroxyl ions Light irradiation Nanocomposite Nanocomposites Nanocrystals Nanoparticles Nitrates Photocatalysis Photodegradation Polyacrylonitrile Radiation Recombination Visible light photocatalytic activity X ray photoelectron spectroscopy Zinc oxide Zinc oxides ZnO |
| title | Facile preparation of well-dispersed ZnO/cyclized polyacrylonitrile nanocomposites with highly enhanced visible-light photocatalytic activity |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-09T04%3A24%3A22IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Facile%20preparation%20of%20well-dispersed%20ZnO/cyclized%20polyacrylonitrile%20nanocomposites%20with%20highly%20enhanced%20visible-light%20photocatalytic%20activity&rft.jtitle=Applied%20catalysis.%20B,%20Environmental&rft.au=Luo,%20Qingzhi&rft.date=2017-05-05&rft.volume=204&rft.spage=304&rft.epage=315&rft.pages=304-315&rft.issn=0926-3373&rft.eissn=1873-3883&rft_id=info:doi/10.1016/j.apcatb.2016.11.037&rft_dat=%3Cproquest_cross%3E1932192409%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1932192409&rft_id=info:pmid/&rft_els_id=S0926337316309043&rfr_iscdi=true |