Article(id=1242131349713265500, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1242131347544810318, articleNumber=null, orderNo=3, doi=10.3981/j.issn.1000-7857.2013.36.002, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1371744000000, receivedDateStr=2013-06-21, revisedDate=1383494400000, revisedDateStr=2013-11-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1389766914453, onlineDateStr=2014-01-15, pubDate=1388160000000, pubDateStr=2013-12-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1389766914453, onlineIssueDateStr=2014-01-15, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774076791452, creator=sys-migrate, updateTime=1774076791452, updator=sys-migrate, issue=Issue{id=1242131347544810318, tenantId=1146029695717560320, journalId=1146031591421210625, year='2013', volume='31', issue='36', pageStart='2', pageEnd='120', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=3, issueType=-1, specialIssue=null, createTime=1774076790936, creator=sys-migrate, updateTime=1774076790936, updator=sys-migrate, preIssue=null, nextIssue=null, ext=null, issueFiles=null}, startPage=20, endPage=25, ext={EN=ArticleExt(id=1242131354440246150, articleId=1242131349713265500, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=Preparation of SO₄^2--H₃PW₁₂O₄₀/TiO₂(P123) and It’s Photocatalytic Activity for Dinitrotoluene Decomposition, columnId=1242116080374710456, journalTitle=Science & Technology Review, columnName=Articles, runingTitle=null, highlight=null, articleAbstract=Mesoporous materials SO₄^2--H₃PW₁₂O₄₀ /TiO₂(P123)were synthesized by combining sol-gel technology and solvothermal treatment. Nitrogen adsorption-desorption analysis and Scanning Electron Microscopy (SEM) results suggest that the specific surface area of SO₄^2--H₃PW₁₂O₄₀ /TiO₂(2gP123)is 211m²/g, which is five times higher than that of pure TiO₂. The average particle size of composite catalyst decreases obviously. Results of ultraviolet-visible absorption spectra (UV-Vis) show that, compared with pure TiO₂, an obvious redshift of composite catalysts was observed and the absorption intensity of the band increased significantly. By means of the orthogonal design method of L₁₆(4⁵), the influence of various operating parameters on the dinitrotoluene (DNT) degradation were investigated, including H₃PW₁₂O₄₀ loadings, dosage of template agent P123, initial pH value of the solution, catalyst dosage and the concentration of H₂SO₄, then the intuitionistic analysis and variance analysis were performed. Kinetics results show that the photocatalytic degradation of DNT fits the apparent first-order reaction. The conversion of DNT reached 98.7% after xenon lamp irradiating for 4h under optimum operating conditions: 1.2g/L catalyst dosage, 20%H₃PW₁₂O₄₀ loading, 2g dosage of P123, pH value 2 and 1mol/L H₂SO₄. The half-life of DNT degradation is 0.7162h. The experimental results demonstrate that the photocatalytic effect is good., correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=Ry03NW9q+B/iSsqFJhvHIA==, pdfFileSize=3157709, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;
2. College of Science, China Agricultural University, Beijing 100193, China, fund=null, authors=SHANG Hairu¹, LIU Xia², FENG Changgen¹, authorsList=SHANG Hairu, LIU Xia, FENG Changgen), CN=ArticleExt(id=1242131351521010535, articleId=1242131349713265500, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=复合催化剂SO₄^2--H₃PW₁₂O₄₀/TiO₂(P123)的制备及其光催化降解二硝基甲苯, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=采用溶胶-凝胶与溶剂热相结合的方法制备了系列介孔复合光催化剂SO₄^2--H₃PW₁₂O₄₀/TiO₂ （P123），并对其进行了表征和分析。N₂吸附表面分析及扫描电镜（SEM）图片显示，复合催化剂的粒径明显减小，比表面积高达211m²/g，是TiO₂的5 倍。紫外漫反射吸收光谱（UV-Vis）显示，与TiO₂相比，复合催化剂的吸收光谱发生了明显的红移，且吸收强度明显增强。运用L₁₆（4⁵）的正交实验设计探讨了H₃PW₁₂O₄₀负载量、模板剂P123 的添加量、溶液初始pH 值、催化剂加入量以及H₂SO₄浓度5 个因素对二硝基甲苯（DNT）降解性能的影响，并对正交实验结果进行了直观分析和方差分析。结果表明，该降解过程符合L-H 表观一级反应动力学，在催化剂用量为1.2g/L、H₃PW₁₂O₄₀负载量为20%、模板剂P123 的加入量为2g、溶液初始pH 为2、H₂SO₄的浓度为1mol/L 条件下，经氙灯光源辐照4h 后，DNT 的降解率达到98.7%，DNT 降解的半衰期为0.7162h，取得了良好的光催化效果。, correspAuthors=null, authorNote=尚海茹，博士研究生，研究方向为复合材料的制备及其光催化降解炸药，电子信箱：hairushang@126.com, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=zkKs097Fma1mpGAkNmZGFQ==, pdfFileSize=3157709, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=1. 北京理工大学爆炸科学与技术国家重点实验室, 北京 100081;
2. 中国农业大学理学院, 北京 100193, fund=中国工程物理研究院化工材料研究所资助项目；《科技导报》博士生创新研究计划资助项目（kjdb2011005）, authors=尚海茹¹, 刘霞², 冯长根¹, authorsList=尚海茹, 刘霞, 冯长根)}, authors=null, keywords=[Keyword(id=1242131350921225058, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242131349713265500, language=CN, orderNo=1, keyword=多金属氧酸盐), Keyword(id=1242131351017694051, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242131349713265500, language=CN, orderNo=1, keyword=二氧化钛), Keyword(id=1242131351101580132, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242131349713265500, language=CN, orderNo=1, keyword=光催化), Keyword(id=1242131351193854821, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242131349713265500, language=CN, orderNo=1, keyword=二硝基甲苯), Keyword(id=1242131351290323814, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242131349713265500, language=CN, orderNo=1, keyword=正交设计), 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