A preparation method of bismuth silicate powder photocatalyst
The invention relates to a preparation method for bismuth silicate powder photocatalyst. At first pentahydrate bismuth nitrate and active agent on the surface of a segmented copolymer are dissolved in acetic acid to form uniform clear solution, and then silicate ester is added into solution containi...
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| creator | ZHANG ZHEYUN SHEN ZHENYAO NIU JUNFENG YIN LIFENG JIANG GUOXIANG |
| description | The invention relates to a preparation method for bismuth silicate powder photocatalyst. At first pentahydrate bismuth nitrate and active agent on the surface of a segmented copolymer are dissolved in acetic acid to form uniform clear solution, and then silicate ester is added into solution containing bismuth according that the mol ratio of bismuth to silicon is equal to 12:1, and is fully mixed to form uniform sol. After aging, the solution is moved into an autoclave to be hermetically crystallized, so as to obtain the composite oxide gel of the bismuth and the silicon, and after being filtered, cleaned, and dried, at last precursor powder is roasted in the air environment, namely, the bismuth silicate powder photocatalyst of the granularity with micron size is obtained. The invention can stably and uniformly obtain the bismuth silicate powder with good crystallinity under the lower temperature, and the granularity of the photocatalyst is larger, thereby being convenient for being separated from a water body |
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At first pentahydrate bismuth nitrate and active agent on the surface of a segmented copolymer are dissolved in acetic acid to form uniform clear solution, and then silicate ester is added into solution containing bismuth according that the mol ratio of bismuth to silicon is equal to 12:1, and is fully mixed to form uniform sol. After aging, the solution is moved into an autoclave to be hermetically crystallized, so as to obtain the composite oxide gel of the bismuth and the silicon, and after being filtered, cleaned, and dried, at last precursor powder is roasted in the air environment, namely, the bismuth silicate powder photocatalyst of the granularity with micron size is obtained. The invention can stably and uniformly obtain the bismuth silicate powder with good crystallinity under the lower temperature, and the granularity of the photocatalyst is larger, thereby being convenient for being separated from a water body</description><language>chi ; eng</language><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; COMPOUNDS THEREOF ; INORGANIC CHEMISTRY ; METALLURGY ; NON-METALLIC ELEMENTS ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>2008</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080409&DB=EPODOC&CC=CN&NR=101157026A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080409&DB=EPODOC&CC=CN&NR=101157026A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ZHANG ZHEYUN</creatorcontrib><creatorcontrib>SHEN ZHENYAO</creatorcontrib><creatorcontrib>NIU JUNFENG</creatorcontrib><creatorcontrib>YIN LIFENG</creatorcontrib><creatorcontrib>JIANG GUOXIANG</creatorcontrib><title>A preparation method of bismuth silicate powder photocatalyst</title><description>The invention relates to a preparation method for bismuth silicate powder photocatalyst. At first pentahydrate bismuth nitrate and active agent on the surface of a segmented copolymer are dissolved in acetic acid to form uniform clear solution, and then silicate ester is added into solution containing bismuth according that the mol ratio of bismuth to silicon is equal to 12:1, and is fully mixed to form uniform sol. After aging, the solution is moved into an autoclave to be hermetically crystallized, so as to obtain the composite oxide gel of the bismuth and the silicon, and after being filtered, cleaned, and dried, at last precursor powder is roasted in the air environment, namely, the bismuth silicate powder photocatalyst of the granularity with micron size is obtained. 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At first pentahydrate bismuth nitrate and active agent on the surface of a segmented copolymer are dissolved in acetic acid to form uniform clear solution, and then silicate ester is added into solution containing bismuth according that the mol ratio of bismuth to silicon is equal to 12:1, and is fully mixed to form uniform sol. After aging, the solution is moved into an autoclave to be hermetically crystallized, so as to obtain the composite oxide gel of the bismuth and the silicon, and after being filtered, cleaned, and dried, at last precursor powder is roasted in the air environment, namely, the bismuth silicate powder photocatalyst of the granularity with micron size is obtained. The invention can stably and uniformly obtain the bismuth silicate powder with good crystallinity under the lower temperature, and the granularity of the photocatalyst is larger, thereby being convenient for being separated from a water body</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING |
| title | A preparation method of bismuth silicate powder photocatalyst |
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