Catalytic applications of mesoporous CaBi2O4 obtained from a single source precursor
With the aim of generating mesoporous CaBi 2 O 4 and further to investigate its catalytic properties, thermolysis of mineral beyerite was carried out between 650 and 800 °C for varying durations. Monophasic CaBi 2 O 4 emerged after calcination of beyerite at 675 °C for 24 h. Successful Rietveld refi...
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| Veröffentlicht in: | Research on chemical intermediates 2019-04, Vol.45 (4), p.2457-2470 |
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| creator | Atri, Shalu Malik, Vidhu Uma, Sitharaman Nagarajan, Rajamani |
| description | With the aim of generating mesoporous CaBi
2
O
4
and further to investigate its catalytic properties, thermolysis of mineral beyerite was carried out between 650 and 800 °C for varying durations. Monophasic CaBi
2
O
4
emerged after calcination of beyerite at 675 °C for 24 h. Successful Rietveld refinement of powder X-ray diffraction pattern of this sample was achieved in
C
2
/c
space group with
a
= 16.6066 (9) Å,
b
= 11.5884 (6) Å and
c
= 13.9915 (8) Å,
β
= 134.029°. Dumbbell-shaped morphology of crystallites was observed in field emission scanning electron microscopic images. The energy dispersive spectral analysis at various locations of the sample confirmed the atomic ratio of Ca, Bi and O close to 1:2:4. Presence of fingerprint modes in the Raman spectrum of this sample augmented the results from powder X-ray diffraction. Absorption over the entire ultraviolet region and part of the visible region along with tailing was noticed in the UV–visible spectrum of this sample. The direct band gap energy was found to be 2.67 eV. From nitrogen adsorption–desorption isotherms, surface area of 78 m
2
g
−1
and pore diameter of 5.18 nm were deduced. Reduction of harmful 4-nitrophenol and carcinogenic Cr(VI) was catalyzed efficiently by this sample. Kinetics of reduction of 4-nitrophenol has also been examined. Recyclability experiments were successful up to four cycles. Possible mechanisms operative in these sets of reactions have been discussed. |
| doi_str_mv | 10.1007/s11164-019-03746-y |
| format | Article |
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2
O
4
and further to investigate its catalytic properties, thermolysis of mineral beyerite was carried out between 650 and 800 °C for varying durations. Monophasic CaBi
2
O
4
emerged after calcination of beyerite at 675 °C for 24 h. Successful Rietveld refinement of powder X-ray diffraction pattern of this sample was achieved in
C
2
/c
space group with
a
= 16.6066 (9) Å,
b
= 11.5884 (6) Å and
c
= 13.9915 (8) Å,
β
= 134.029°. Dumbbell-shaped morphology of crystallites was observed in field emission scanning electron microscopic images. The energy dispersive spectral analysis at various locations of the sample confirmed the atomic ratio of Ca, Bi and O close to 1:2:4. Presence of fingerprint modes in the Raman spectrum of this sample augmented the results from powder X-ray diffraction. Absorption over the entire ultraviolet region and part of the visible region along with tailing was noticed in the UV–visible spectrum of this sample. The direct band gap energy was found to be 2.67 eV. From nitrogen adsorption–desorption isotherms, surface area of 78 m
2
g
−1
and pore diameter of 5.18 nm were deduced. Reduction of harmful 4-nitrophenol and carcinogenic Cr(VI) was catalyzed efficiently by this sample. Kinetics of reduction of 4-nitrophenol has also been examined. Recyclability experiments were successful up to four cycles. Possible mechanisms operative in these sets of reactions have been discussed.</description><identifier>ISSN: 0922-6168</identifier><identifier>EISSN: 1568-5675</identifier><identifier>DOI: 10.1007/s11164-019-03746-y</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Carcinogens ; Catalysis ; Chemistry ; Chemistry and Materials Science ; Crystallites ; Diffraction patterns ; Emission analysis ; Energy gap ; Field emission microscopy ; Inorganic Chemistry ; Morphology ; Nitrophenol ; Physical Chemistry ; Reaction kinetics ; Recyclability ; Reduction ; Visible spectrum ; X ray powder diffraction ; X-ray diffraction</subject><ispartof>Research on chemical intermediates, 2019-04, Vol.45 (4), p.2457-2470</ispartof><rights>Springer Nature B.V. 2019</rights><rights>Copyright Springer Nature B.V. 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c286t-e9272dba298a4307ede09c2cf0792d2fcdae14d47a2b399ddd0ec0660ddc68323</citedby><cites>FETCH-LOGICAL-c286t-e9272dba298a4307ede09c2cf0792d2fcdae14d47a2b399ddd0ec0660ddc68323</cites><orcidid>0000-0002-0983-7814</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/s11164-019-03746-y$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11164-019-03746-y$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Atri, Shalu</creatorcontrib><creatorcontrib>Malik, Vidhu</creatorcontrib><creatorcontrib>Uma, Sitharaman</creatorcontrib><creatorcontrib>Nagarajan, Rajamani</creatorcontrib><title>Catalytic applications of mesoporous CaBi2O4 obtained from a single source precursor</title><title>Research on chemical intermediates</title><addtitle>Res Chem Intermed</addtitle><description>With the aim of generating mesoporous CaBi
2
O
4
and further to investigate its catalytic properties, thermolysis of mineral beyerite was carried out between 650 and 800 °C for varying durations. Monophasic CaBi
2
O
4
emerged after calcination of beyerite at 675 °C for 24 h. Successful Rietveld refinement of powder X-ray diffraction pattern of this sample was achieved in
C
2
/c
space group with
a
= 16.6066 (9) Å,
b
= 11.5884 (6) Å and
c
= 13.9915 (8) Å,
β
= 134.029°. Dumbbell-shaped morphology of crystallites was observed in field emission scanning electron microscopic images. The energy dispersive spectral analysis at various locations of the sample confirmed the atomic ratio of Ca, Bi and O close to 1:2:4. Presence of fingerprint modes in the Raman spectrum of this sample augmented the results from powder X-ray diffraction. Absorption over the entire ultraviolet region and part of the visible region along with tailing was noticed in the UV–visible spectrum of this sample. The direct band gap energy was found to be 2.67 eV. From nitrogen adsorption–desorption isotherms, surface area of 78 m
2
g
−1
and pore diameter of 5.18 nm were deduced. Reduction of harmful 4-nitrophenol and carcinogenic Cr(VI) was catalyzed efficiently by this sample. Kinetics of reduction of 4-nitrophenol has also been examined. Recyclability experiments were successful up to four cycles. Possible mechanisms operative in these sets of reactions have been discussed.</description><subject>Carcinogens</subject><subject>Catalysis</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Crystallites</subject><subject>Diffraction patterns</subject><subject>Emission analysis</subject><subject>Energy gap</subject><subject>Field emission microscopy</subject><subject>Inorganic Chemistry</subject><subject>Morphology</subject><subject>Nitrophenol</subject><subject>Physical Chemistry</subject><subject>Reaction kinetics</subject><subject>Recyclability</subject><subject>Reduction</subject><subject>Visible spectrum</subject><subject>X ray powder diffraction</subject><subject>X-ray diffraction</subject><issn>0922-6168</issn><issn>1568-5675</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhi0EEqXwB5gsMRvOduLYI0R8SZW6lNlybadylcbBTob8ewJBYmO65X3eu3sQuqVwTwGqh0wpFQUBqgjwqhBkOkMrWgpJSlGV52gFijEiqJCX6CrnIwAtpYQV2tVmMO00BItN37fBmiHELuPY4JPPsY8pjhnX5imwbYHjfjCh8w43KZ6wwTl0h9bjHMdkPe6Tt2PKMV2ji8a02d_8zjX6eHne1W9ks319rx83xDIpBuIVq5jbG6akKThU3nlQltkGKsUca6wznhauqAzbc6Wcc-AtCAHOWSE542t0t_T2KX6OPg_6OF_SzSs1o4pyOT8v5xRbUjbFnJNvdJ_CyaRJU9Df9vRiT8_29I89Pc0QX6A8h7uDT3_V_1BfO_h0Cg</recordid><startdate>20190401</startdate><enddate>20190401</enddate><creator>Atri, Shalu</creator><creator>Malik, Vidhu</creator><creator>Uma, Sitharaman</creator><creator>Nagarajan, Rajamani</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0002-0983-7814</orcidid></search><sort><creationdate>20190401</creationdate><title>Catalytic applications of mesoporous CaBi2O4 obtained from a single source precursor</title><author>Atri, Shalu ; Malik, Vidhu ; Uma, Sitharaman ; Nagarajan, Rajamani</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c286t-e9272dba298a4307ede09c2cf0792d2fcdae14d47a2b399ddd0ec0660ddc68323</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Carcinogens</topic><topic>Catalysis</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Crystallites</topic><topic>Diffraction patterns</topic><topic>Emission analysis</topic><topic>Energy gap</topic><topic>Field emission microscopy</topic><topic>Inorganic Chemistry</topic><topic>Morphology</topic><topic>Nitrophenol</topic><topic>Physical Chemistry</topic><topic>Reaction kinetics</topic><topic>Recyclability</topic><topic>Reduction</topic><topic>Visible spectrum</topic><topic>X ray powder diffraction</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Atri, Shalu</creatorcontrib><creatorcontrib>Malik, Vidhu</creatorcontrib><creatorcontrib>Uma, Sitharaman</creatorcontrib><creatorcontrib>Nagarajan, Rajamani</creatorcontrib><collection>CrossRef</collection><jtitle>Research on chemical intermediates</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Atri, Shalu</au><au>Malik, Vidhu</au><au>Uma, Sitharaman</au><au>Nagarajan, Rajamani</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Catalytic applications of mesoporous CaBi2O4 obtained from a single source precursor</atitle><jtitle>Research on chemical intermediates</jtitle><stitle>Res Chem Intermed</stitle><date>2019-04-01</date><risdate>2019</risdate><volume>45</volume><issue>4</issue><spage>2457</spage><epage>2470</epage><pages>2457-2470</pages><issn>0922-6168</issn><eissn>1568-5675</eissn><abstract>With the aim of generating mesoporous CaBi
2
O
4
and further to investigate its catalytic properties, thermolysis of mineral beyerite was carried out between 650 and 800 °C for varying durations. Monophasic CaBi
2
O
4
emerged after calcination of beyerite at 675 °C for 24 h. Successful Rietveld refinement of powder X-ray diffraction pattern of this sample was achieved in
C
2
/c
space group with
a
= 16.6066 (9) Å,
b
= 11.5884 (6) Å and
c
= 13.9915 (8) Å,
β
= 134.029°. Dumbbell-shaped morphology of crystallites was observed in field emission scanning electron microscopic images. The energy dispersive spectral analysis at various locations of the sample confirmed the atomic ratio of Ca, Bi and O close to 1:2:4. Presence of fingerprint modes in the Raman spectrum of this sample augmented the results from powder X-ray diffraction. Absorption over the entire ultraviolet region and part of the visible region along with tailing was noticed in the UV–visible spectrum of this sample. The direct band gap energy was found to be 2.67 eV. From nitrogen adsorption–desorption isotherms, surface area of 78 m
2
g
−1
and pore diameter of 5.18 nm were deduced. Reduction of harmful 4-nitrophenol and carcinogenic Cr(VI) was catalyzed efficiently by this sample. Kinetics of reduction of 4-nitrophenol has also been examined. Recyclability experiments were successful up to four cycles. Possible mechanisms operative in these sets of reactions have been discussed.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s11164-019-03746-y</doi><tpages>14</tpages><orcidid>https://orcid.org/0000-0002-0983-7814</orcidid></addata></record> |
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| language | eng |
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| subjects | Carcinogens Catalysis Chemistry Chemistry and Materials Science Crystallites Diffraction patterns Emission analysis Energy gap Field emission microscopy Inorganic Chemistry Morphology Nitrophenol Physical Chemistry Reaction kinetics Recyclability Reduction Visible spectrum X ray powder diffraction X-ray diffraction |
| title | Catalytic applications of mesoporous CaBi2O4 obtained from a single source precursor |
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