Article(id=1319222246783169382, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222240177144549, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20220509, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1655913600000, receivedDateStr=2022-06-23, revisedDate=1658332800000, revisedDateStr=2022-07-21, acceptedDate=null, acceptedDateStr=null, onlineDate=1792456693597, onlineDateStr=2026-10-20, pubDate=1674144000000, pubDateStr=2023-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792456693597, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792456693597, creator=13701087609, updateTime=1792456693597, updator=13701087609, issue=Issue{id=1319222240177144549, tenantId=1146029695717560320, journalId=1263187385517883426, year='2023', volume='51', issue='1', pageStart='1', pageEnd='282', issueExtLink='null', onlineDate='null', pubDate='1674144000000', pubDateStr='2023-01-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1792456692021, creator='13701087609', updateTime=1792456863865, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1319222960989262349, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222240177144549, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1319222960989262350, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222240177144549, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=32, endPage=39, ext={EN=ArticleExt(id=1319222247026439015, articleId=1319222246783169382, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Synthesis Parameters and Photocatalytic Activity of Titania Nanosheets, columnId=1321891568328487649, journalTitle=Journal of the Chinese Ceramic Society, columnName=Special Issue on Photocatalytic Materials—Research Articles, runingTitle=null, highlight=null, articleAbstract=

Two-dimensional TiO2 nanosheets at large size are of importance in the electronic devices, but the synthesis is challenging. A few-layered titanate was prepared via high-temperature solid-state reaction with Cs2CO3 and anatase TiO2 as precursors. The results show that the crystallinity of cesium titanate (Cs0.7Ti1.825O4) as a solid reaction product is related to the several pretreatment parameters, i.e., mixing method for precursors, molar ratio of Cs/Ti, feeding amount, and calcination duration. A single phase of Cs0.7Ti1.825O4 can be obtained by calcinating the precursor mixture. However, a mixed phase of rutile TiO2 and Cs0.7Ti1.825O4 is obtained when the precursors are mixed in solution. A product Cs0.7Ti1.825O4 can be obtained at 800 ℃ in a molar ratio range of n(Cs)/n(Ti) of 1/(2.6-4.0). The crystallinity of cesium titanate improves with the increase of feeding amount of total precursors or calcination duration. After calcination, cesium titanate is treated using hydrochloric acid and the protonated product of H0.7Ti1.825O4 is obtained. Also, few-layered titania nanosheets (Ti0.91O2) are obtained via exfoliation of the protonated product with amine-based macromolecules (TBAOH). The well-ordered lamellar structure of Ti0.91O2 is formed when the molar ratio between TBAOH ions to the exchangeable protons in the titanate is 0.5 (n(TBAOH)/n(H+)=0.5). Such a layered structure is annealed and used as a photocatalyst for hydrogen evolution in water under simulated solar light with ethanol as a sacrificial agent. The photocatalytic activity of the final product is related to the ratio of TBAOH/H+ during exfoliation, and it is indicated that the product obtained at TBAOH/H+ of 0.5 exhibits the optimum hydrogen evolution activity.

, authors=Xuemei ZHOU, Lei YANG, Xiaochi HAN, authorsList=Xuemei ZHOU, Lei YANG, Xiaochi HAN, authorCompany=null, correspAuthors=null, authorNote=

ZHOU Xuemei (1988-), female, Professor. E-mail:

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大尺寸二维二氧化钛纳米片在电子器件中有重要的作用,但是目前的合成仍面临挑战。本工作提出了以碳酸铯(Cs2CO3)和锐钛矿二氧化钛(TiO2)为原料,高温固相合成层状钛酸盐,并研究钛酸盐合成的实验条件。研究固相反应产物钛酸铯(Cs0.7Ti1.825O4)的结晶性随原料的混料方式、摩尔比、投料量、煅烧时间等的变化关系。结果表明:采用固态混料方式煅烧获得的产物仅有单一物相Cs0.7Ti1.825O4,而采用溶液混料的方式得到的产物含有金红石二氧化钛和钛酸铯的两相混合物。在反应温度为800 ℃、反应原料摩尔比为n(Cs)/n(Ti)=1/(2.6~4.0)时,均可得到产物Cs0.7Ti1.825O4。并且产物钛酸铯结晶性随着反应物的投料量和煅烧时间的增加而提高。用盐酸处理获得的体相钛酸铯(Cs0.7Ti1.825O4),获得质子化的产物(H0.7Ti1.825O4)。四丁基氢氧化铵(TBAOH)对质子化产物进行剥离,并获得二氧化钛少层纳米片(Ti0.91O2)。研究发现,当大分子与钛酸盐中可交换质子的摩尔比为0.5 [n(TBAOH)/n(H+)=0.5]时,可诱导有序的片层结构(Ti0.91O2)生成。该层状结构煅烧处理后用作光催化剂进行水分解制氢的研究。光催化实验在模拟太阳光下进行,并用乙醇做牺牲剂。研究发现Ti0.91O2的催化活性与剥离条件下TBAOH/H+的摩尔比相关,当n(TBAOH)/n(H+)=0.5时,获得的纳米片显示出最优的产氢活性。

, authors=周雪梅, 杨磊, 韩晓驰, authorsList=周雪梅, 杨磊, 韩晓驰, authorCompany=null, correspAuthors=null, authorNote=

周雪梅(1988—),女,博士,研究员。

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周雪梅(1988—),女,博士,研究员。

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二氧化钛纳米片的合成及其光催化活性
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周雪梅 , 杨磊 , 韩晓驰
硅酸盐学报 | 光催化材料专题—研究论文 2023,51(1): 32-39
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硅酸盐学报 |光催化材料专题—研究论文 2023 , 51 (1) : 32 -39
二氧化钛纳米片的合成及其光催化活性
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周雪梅 , 杨磊, 韩晓驰
作者信息
  • 四川大学化学工程学院,成都 610065
作者简介:

周雪梅(1988—),女,博士,研究员。

Synthesis Parameters and Photocatalytic Activity of Titania Nanosheets
Xuemei ZHOU , Lei YANG, Xiaochi HAN
Affiliations
  • School of Chemical Engineering, Sichuan University, Chengdu 610065, China
  • ZHOU Xuemei (1988-), female, Professor. E-mail:

出版时间: 2023-01-20 doi: 10.14062/j.issn.0454-5648.20220509
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大尺寸二维二氧化钛纳米片在电子器件中有重要的作用,但是目前的合成仍面临挑战。本工作提出了以碳酸铯(Cs2CO3)和锐钛矿二氧化钛(TiO2)为原料,高温固相合成层状钛酸盐,并研究钛酸盐合成的实验条件。研究固相反应产物钛酸铯(Cs0.7Ti1.825O4)的结晶性随原料的混料方式、摩尔比、投料量、煅烧时间等的变化关系。结果表明:采用固态混料方式煅烧获得的产物仅有单一物相Cs0.7Ti1.825O4,而采用溶液混料的方式得到的产物含有金红石二氧化钛和钛酸铯的两相混合物。在反应温度为800 ℃、反应原料摩尔比为n(Cs)/n(Ti)=1/(2.6~4.0)时,均可得到产物Cs0.7Ti1.825O4。并且产物钛酸铯结晶性随着反应物的投料量和煅烧时间的增加而提高。用盐酸处理获得的体相钛酸铯(Cs0.7Ti1.825O4),获得质子化的产物(H0.7Ti1.825O4)。四丁基氢氧化铵(TBAOH)对质子化产物进行剥离,并获得二氧化钛少层纳米片(Ti0.91O2)。研究发现,当大分子与钛酸盐中可交换质子的摩尔比为0.5 [n(TBAOH)/n(H+)=0.5]时,可诱导有序的片层结构(Ti0.91O2)生成。该层状结构煅烧处理后用作光催化剂进行水分解制氢的研究。光催化实验在模拟太阳光下进行,并用乙醇做牺牲剂。研究发现Ti0.91O2的催化活性与剥离条件下TBAOH/H+的摩尔比相关,当n(TBAOH)/n(H+)=0.5时,获得的纳米片显示出最优的产氢活性。

二氧化钛纳米片  /  高温固相合成  /  大分子剥离  /  光催化产氢

Two-dimensional TiO2 nanosheets at large size are of importance in the electronic devices, but the synthesis is challenging. A few-layered titanate was prepared via high-temperature solid-state reaction with Cs2CO3 and anatase TiO2 as precursors. The results show that the crystallinity of cesium titanate (Cs0.7Ti1.825O4) as a solid reaction product is related to the several pretreatment parameters, i.e., mixing method for precursors, molar ratio of Cs/Ti, feeding amount, and calcination duration. A single phase of Cs0.7Ti1.825O4 can be obtained by calcinating the precursor mixture. However, a mixed phase of rutile TiO2 and Cs0.7Ti1.825O4 is obtained when the precursors are mixed in solution. A product Cs0.7Ti1.825O4 can be obtained at 800 ℃ in a molar ratio range of n(Cs)/n(Ti) of 1/(2.6-4.0). The crystallinity of cesium titanate improves with the increase of feeding amount of total precursors or calcination duration. After calcination, cesium titanate is treated using hydrochloric acid and the protonated product of H0.7Ti1.825O4 is obtained. Also, few-layered titania nanosheets (Ti0.91O2) are obtained via exfoliation of the protonated product with amine-based macromolecules (TBAOH). The well-ordered lamellar structure of Ti0.91O2 is formed when the molar ratio between TBAOH ions to the exchangeable protons in the titanate is 0.5 (n(TBAOH)/n(H+)=0.5). Such a layered structure is annealed and used as a photocatalyst for hydrogen evolution in water under simulated solar light with ethanol as a sacrificial agent. The photocatalytic activity of the final product is related to the ratio of TBAOH/H+ during exfoliation, and it is indicated that the product obtained at TBAOH/H+ of 0.5 exhibits the optimum hydrogen evolution activity.

titania nanosheet  /  high temperature solid-state reaction  /  macromolecular exfoliation  /  photocatalytic hydrogen evolution
周雪梅, 杨磊, 韩晓驰. 二氧化钛纳米片的合成及其光催化活性. 硅酸盐学报, 2023 , 51 (1) : 32 -39 . DOI: 10.14062/j.issn.0454-5648.20220509
Xuemei ZHOU, Lei YANG, Xiaochi HAN. Synthesis Parameters and Photocatalytic Activity of Titania Nanosheets[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (1) : 32 -39 . DOI: 10.14062/j.issn.0454-5648.20220509
  • 国家自然科学基金青年项目(22108179)
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doi: 10.14062/j.issn.0454-5648.20220509
  • 接收时间:2022-06-23
  • 首发时间:2026-10-20
  • 出版时间:2023-01-20
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  • 收稿日期:2022-06-23
  • 修回日期:2022-07-21
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国家自然科学基金青年项目(22108179)
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    四川大学化学工程学院,成都 610065
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2种不同金属材料的力学参数
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genus
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species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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