Green Synthesized α-MnO2 As a Photocatalytic Reagent for Methylene Blue and Congo Red Degradation
Pure α-MnO 2 materials with interconnected nanowires in an urchin shape were synthesized by a green synthesis method. Purified extracts of cinnamon and moringa were used as benign and economical reducing agents to synthesize C-MnO 2 and M-MnO 2 , respectively, from reduction of KMnO 4 . X-ray diffra...
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| Veröffentlicht in: | Journal of electronic materials 2021-04, Vol.50 (4), p.2171-2181 |
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| creator | Abuzeid, H. M. Youssef, A. M. Yakout, S. M. Elnahrawy, A. M. Hashem, A. M. |
| description | Pure α-MnO
2
materials with interconnected nanowires in an urchin shape were synthesized by a green synthesis method. Purified extracts of cinnamon and moringa were used as benign and economical reducing agents to synthesize C-MnO
2
and M-MnO
2
, respectively, from reduction of KMnO
4
. X-ray diffraction (XRD) investigation confirmed the phase purity of the as-prepared α-MnO
2
without any additional impurities. Further characterization by thermogravimetric analysis (TGA) showed the thermal behavior of α-MnO
2
which decomposed to Mn
2
O
3
at about 500°C as a result of thermal reduction and loss of oxygen. Transmission electron microscopy (TEM) images showed an urchin shape of as-prepared oxides. Based on a Kubelka–Munk plot, the band gaps of C-MnO
2
and M-MnO
2
nanowires were found to be 1.42 eV and 1.34 eV, respectively. The room temperature dielectric constant values were estimated to be 1980 and 1130 for C-MnO
2
and M-MnO
2
at applied frequency of 42 Hz, respectively. The dielectric constant values of 2.02 × 10
6
at 140°C and 1.05 × 10
6
at 220°C were noted for M-MnO
2
and C-MnO
2
, respectively. The results of photocatalytic experiments showed that both M-MnO
2
and C-MnO
2
exhibited high visible light photocatalytic activities for methylene blue and Congo red degradation with efficiencies above 90% after irradiation for 140 min. |
| doi_str_mv | 10.1007/s11664-020-08683-w |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2502566777</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2502566777</sourcerecordid><originalsourceid>FETCH-LOGICAL-c319t-d88d91ddd839612f43388c6ffb57ff3823347dcef8bbd64b36a2f53f0e2f58623</originalsourceid><addsrcrecordid>eNp9kMtKAzEYhYMoWKsv4CrgOprLTCZd1qpVaKl4AXchM_nTCzWpSUqpb-WL-EyOVnDn6my-cw58CJ0yes4orS4SY1IWhHJKqJJKkM0e6rCyEIQp-bKPOlRIRkouykN0lNKCUlYyxTqoHkYAjx-3Ps8gzd_B4s8PMvYTjvsJG3w_Czk0JpvlNs8b_ABmCj5jFyIeQ55tl-ABXy7XgI23eBD8NLSQxVcwjcaaPA_-GB04s0xw8ptd9Hxz_TS4JaPJ8G7QH5FGsF4mVinbY9ZaJXqScVcIoVQjnavLyjmhuBBFZRtwqq6tLGohDXelcBTaUJKLLjrb7a5ieFtDynoR1tG3l5qXlJdSVlXVUnxHNTGkFMHpVZy_mrjVjOpvl3rnUrcu9Y9LvWlLYldKLeynEP-m_2l9AdXBeB8</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2502566777</pqid></control><display><type>article</type><title>Green Synthesized α-MnO2 As a Photocatalytic Reagent for Methylene Blue and Congo Red Degradation</title><source>SpringerLink Journals - AutoHoldings</source><creator>Abuzeid, H. M. ; Youssef, A. M. ; Yakout, S. M. ; Elnahrawy, A. M. ; Hashem, A. M.</creator><creatorcontrib>Abuzeid, H. M. ; Youssef, A. M. ; Yakout, S. M. ; Elnahrawy, A. M. ; Hashem, A. M.</creatorcontrib><description>Pure α-MnO
2
materials with interconnected nanowires in an urchin shape were synthesized by a green synthesis method. Purified extracts of cinnamon and moringa were used as benign and economical reducing agents to synthesize C-MnO
2
and M-MnO
2
, respectively, from reduction of KMnO
4
. X-ray diffraction (XRD) investigation confirmed the phase purity of the as-prepared α-MnO
2
without any additional impurities. Further characterization by thermogravimetric analysis (TGA) showed the thermal behavior of α-MnO
2
which decomposed to Mn
2
O
3
at about 500°C as a result of thermal reduction and loss of oxygen. Transmission electron microscopy (TEM) images showed an urchin shape of as-prepared oxides. Based on a Kubelka–Munk plot, the band gaps of C-MnO
2
and M-MnO
2
nanowires were found to be 1.42 eV and 1.34 eV, respectively. The room temperature dielectric constant values were estimated to be 1980 and 1130 for C-MnO
2
and M-MnO
2
at applied frequency of 42 Hz, respectively. The dielectric constant values of 2.02 × 10
6
at 140°C and 1.05 × 10
6
at 220°C were noted for M-MnO
2
and C-MnO
2
, respectively. The results of photocatalytic experiments showed that both M-MnO
2
and C-MnO
2
exhibited high visible light photocatalytic activities for methylene blue and Congo red degradation with efficiencies above 90% after irradiation for 140 min.</description><identifier>ISSN: 0361-5235</identifier><identifier>EISSN: 1543-186X</identifier><identifier>DOI: 10.1007/s11664-020-08683-w</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Degradation ; Electronics and Microelectronics ; Image transmission ; Instrumentation ; Manganese dioxide ; Materials Science ; Methylene blue ; Nanowires ; Optical and Electronic Materials ; Original Research Article ; Permittivity ; Photocatalysis ; Potassium permanganate ; Reagents ; Reducing agents ; Room temperature ; Solid State Physics ; Synthesis ; Thermal reduction ; Thermodynamic properties ; Thermogravimetric analysis</subject><ispartof>Journal of electronic materials, 2021-04, Vol.50 (4), p.2171-2181</ispartof><rights>The Minerals, Metals & Materials Society 2021</rights><rights>The Minerals, Metals & Materials Society 2021.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c319t-d88d91ddd839612f43388c6ffb57ff3823347dcef8bbd64b36a2f53f0e2f58623</citedby><cites>FETCH-LOGICAL-c319t-d88d91ddd839612f43388c6ffb57ff3823347dcef8bbd64b36a2f53f0e2f58623</cites><orcidid>0000-0002-3301-6901</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11664-020-08683-w$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11664-020-08683-w$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids></links><search><creatorcontrib>Abuzeid, H. M.</creatorcontrib><creatorcontrib>Youssef, A. M.</creatorcontrib><creatorcontrib>Yakout, S. M.</creatorcontrib><creatorcontrib>Elnahrawy, A. M.</creatorcontrib><creatorcontrib>Hashem, A. M.</creatorcontrib><title>Green Synthesized α-MnO2 As a Photocatalytic Reagent for Methylene Blue and Congo Red Degradation</title><title>Journal of electronic materials</title><addtitle>Journal of Elec Materi</addtitle><description>Pure α-MnO
2
materials with interconnected nanowires in an urchin shape were synthesized by a green synthesis method. Purified extracts of cinnamon and moringa were used as benign and economical reducing agents to synthesize C-MnO
2
and M-MnO
2
, respectively, from reduction of KMnO
4
. X-ray diffraction (XRD) investigation confirmed the phase purity of the as-prepared α-MnO
2
without any additional impurities. Further characterization by thermogravimetric analysis (TGA) showed the thermal behavior of α-MnO
2
which decomposed to Mn
2
O
3
at about 500°C as a result of thermal reduction and loss of oxygen. Transmission electron microscopy (TEM) images showed an urchin shape of as-prepared oxides. Based on a Kubelka–Munk plot, the band gaps of C-MnO
2
and M-MnO
2
nanowires were found to be 1.42 eV and 1.34 eV, respectively. The room temperature dielectric constant values were estimated to be 1980 and 1130 for C-MnO
2
and M-MnO
2
at applied frequency of 42 Hz, respectively. The dielectric constant values of 2.02 × 10
6
at 140°C and 1.05 × 10
6
at 220°C were noted for M-MnO
2
and C-MnO
2
, respectively. The results of photocatalytic experiments showed that both M-MnO
2
and C-MnO
2
exhibited high visible light photocatalytic activities for methylene blue and Congo red degradation with efficiencies above 90% after irradiation for 140 min.</description><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Degradation</subject><subject>Electronics and Microelectronics</subject><subject>Image transmission</subject><subject>Instrumentation</subject><subject>Manganese dioxide</subject><subject>Materials Science</subject><subject>Methylene blue</subject><subject>Nanowires</subject><subject>Optical and Electronic Materials</subject><subject>Original Research Article</subject><subject>Permittivity</subject><subject>Photocatalysis</subject><subject>Potassium permanganate</subject><subject>Reagents</subject><subject>Reducing agents</subject><subject>Room temperature</subject><subject>Solid State Physics</subject><subject>Synthesis</subject><subject>Thermal reduction</subject><subject>Thermodynamic properties</subject><subject>Thermogravimetric analysis</subject><issn>0361-5235</issn><issn>1543-186X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp9kMtKAzEYhYMoWKsv4CrgOprLTCZd1qpVaKl4AXchM_nTCzWpSUqpb-WL-EyOVnDn6my-cw58CJ0yes4orS4SY1IWhHJKqJJKkM0e6rCyEIQp-bKPOlRIRkouykN0lNKCUlYyxTqoHkYAjx-3Ps8gzd_B4s8PMvYTjvsJG3w_Czk0JpvlNs8b_ABmCj5jFyIeQ55tl-ABXy7XgI23eBD8NLSQxVcwjcaaPA_-GB04s0xw8ptd9Hxz_TS4JaPJ8G7QH5FGsF4mVinbY9ZaJXqScVcIoVQjnavLyjmhuBBFZRtwqq6tLGohDXelcBTaUJKLLjrb7a5ieFtDynoR1tG3l5qXlJdSVlXVUnxHNTGkFMHpVZy_mrjVjOpvl3rnUrcu9Y9LvWlLYldKLeynEP-m_2l9AdXBeB8</recordid><startdate>20210401</startdate><enddate>20210401</enddate><creator>Abuzeid, H. M.</creator><creator>Youssef, A. M.</creator><creator>Yakout, S. M.</creator><creator>Elnahrawy, A. M.</creator><creator>Hashem, A. 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M. ; Youssef, A. M. ; Yakout, S. M. ; Elnahrawy, A. M. ; Hashem, A. M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-d88d91ddd839612f43388c6ffb57ff3823347dcef8bbd64b36a2f53f0e2f58623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry and Materials Science</topic><topic>Degradation</topic><topic>Electronics and Microelectronics</topic><topic>Image transmission</topic><topic>Instrumentation</topic><topic>Manganese dioxide</topic><topic>Materials Science</topic><topic>Methylene blue</topic><topic>Nanowires</topic><topic>Optical and Electronic Materials</topic><topic>Original Research Article</topic><topic>Permittivity</topic><topic>Photocatalysis</topic><topic>Potassium permanganate</topic><topic>Reagents</topic><topic>Reducing agents</topic><topic>Room temperature</topic><topic>Solid State Physics</topic><topic>Synthesis</topic><topic>Thermal reduction</topic><topic>Thermodynamic properties</topic><topic>Thermogravimetric analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Abuzeid, H. M.</creatorcontrib><creatorcontrib>Youssef, A. M.</creatorcontrib><creatorcontrib>Yakout, S. M.</creatorcontrib><creatorcontrib>Elnahrawy, A. M.</creatorcontrib><creatorcontrib>Hashem, A. M.</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>STEM Database</collection><collection>ProQuest Pharma Collection</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><collection>SIRS Editorial</collection><jtitle>Journal of electronic materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Abuzeid, H. M.</au><au>Youssef, A. M.</au><au>Yakout, S. M.</au><au>Elnahrawy, A. M.</au><au>Hashem, A. M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Green Synthesized α-MnO2 As a Photocatalytic Reagent for Methylene Blue and Congo Red Degradation</atitle><jtitle>Journal of electronic materials</jtitle><stitle>Journal of Elec Materi</stitle><date>2021-04-01</date><risdate>2021</risdate><volume>50</volume><issue>4</issue><spage>2171</spage><epage>2181</epage><pages>2171-2181</pages><issn>0361-5235</issn><eissn>1543-186X</eissn><abstract>Pure α-MnO
2
materials with interconnected nanowires in an urchin shape were synthesized by a green synthesis method. Purified extracts of cinnamon and moringa were used as benign and economical reducing agents to synthesize C-MnO
2
and M-MnO
2
, respectively, from reduction of KMnO
4
. X-ray diffraction (XRD) investigation confirmed the phase purity of the as-prepared α-MnO
2
without any additional impurities. Further characterization by thermogravimetric analysis (TGA) showed the thermal behavior of α-MnO
2
which decomposed to Mn
2
O
3
at about 500°C as a result of thermal reduction and loss of oxygen. Transmission electron microscopy (TEM) images showed an urchin shape of as-prepared oxides. Based on a Kubelka–Munk plot, the band gaps of C-MnO
2
and M-MnO
2
nanowires were found to be 1.42 eV and 1.34 eV, respectively. The room temperature dielectric constant values were estimated to be 1980 and 1130 for C-MnO
2
and M-MnO
2
at applied frequency of 42 Hz, respectively. The dielectric constant values of 2.02 × 10
6
at 140°C and 1.05 × 10
6
at 220°C were noted for M-MnO
2
and C-MnO
2
, respectively. The results of photocatalytic experiments showed that both M-MnO
2
and C-MnO
2
exhibited high visible light photocatalytic activities for methylene blue and Congo red degradation with efficiencies above 90% after irradiation for 140 min.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s11664-020-08683-w</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-3301-6901</orcidid></addata></record> |
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| ispartof | Journal of electronic materials, 2021-04, Vol.50 (4), p.2171-2181 |
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| language | eng |
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| source | SpringerLink Journals - AutoHoldings |
| subjects | Characterization and Evaluation of Materials Chemistry and Materials Science Degradation Electronics and Microelectronics Image transmission Instrumentation Manganese dioxide Materials Science Methylene blue Nanowires Optical and Electronic Materials Original Research Article Permittivity Photocatalysis Potassium permanganate Reagents Reducing agents Room temperature Solid State Physics Synthesis Thermal reduction Thermodynamic properties Thermogravimetric analysis |
| title | Green Synthesized α-MnO2 As a Photocatalytic Reagent for Methylene Blue and Congo Red Degradation |
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