Preparation of TiO₂/WO₃ composite photocatalysts by the adjustment of the semiconductors' surface charge

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• 作者：Lucian Baia^a ; ^b ; ¹ ; ^{lucian.baia@phys.ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author} ; Eszter Orbá ; n^c ; ¹ ; ^{eszterorban94@outlook.com" class="auth_mail" title="E-mail the corresponding author} ; Szilvia Fodor^c ; ¹ ; ^{fod_szilvia@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Boglá ; rka Hampel^c ; ¹ ; ^{hampelboglar@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Endre Zsolt Kedves^c ; ^d ; ¹ ; ^{zsolty91@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Kata Saszet^c ; ¹ ; ^{saszetkata@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Istvá ; n Szé ; kely^c ; ^d ; ¹ ; ^{szistike@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; É ; va Kará ; csonyi^e ; ^{karacsonyi.eva@iems.u-szeged.hu" class="auth_mail" title="E-mail the corresponding author} ; Balá ; zs Ré ; ti^f ; ^{retib@chem.u-szeged.hu" class="auth_mail" title="E-mail the corresponding author} ; Pé ; ter Berki^f ; ^{berkipeter@chem.u-szeged.hu" class="auth_mail" title="E-mail the corresponding author} ; Adriana Vulpoi^a ; ^b ; ^{adriana.vulpoi@phys.ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author} ; Klá ; ra Magyari^a ; ^b ; ^{klara.magyari@ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author} ; Alexandra Csavdá ; ri^d ; ^{acsavdari@chem.ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author} ; Csaba Bolla^c ; ^{csbolla@chem.ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author} ; Veronica Coșoveanu^d ; ^{vcosoveanu@chem.ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author} ; Klá ; ra Herná ; di^f ; ^{hernadi@chem.u-szeged.hu" class="auth_mail" title="E-mail the corresponding author} ; Monica Baia^a ; ^b ; ^{monica.baia@phys.ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author} ; Andrá ; s Dombi^e ; ^{dombia@chem.u-szeged.hu" class="auth_mail" title="E-mail the corresponding author} ; Virginia Danciu^d ; ^{vdanciuik@chem.ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author} ; Gá ; bor Ková ; cs^b ; ^c ; ^d ; ^{gkovacs@chem.ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author} ; Zsolt Pap^b ; ^c ; ^d ; ^e ; ^{pap.zsolt@phys.ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Semiconductor composites ; Surface charge ; Photocatalytic activity ; Titania ; Tungsten oxide
• 刊名：Materials Science in Semiconductor Processing
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：42
• 期：part_P1
• 页码：66-71
• 全文大小：1522 K

文摘

The present research focused on the preparation of TiO₂/WO₃ (76/24 wt. %) composite photocatalysts for the photodegradation of methyl orange under UV light. The composites were prepared by the adjustment of the surface charge of the individual semiconductors, achieving a homogeneous distribution of the components within the composite. This resulted in a homogeneous distribution of the components within the composite. The individual WO₃ and TiO₂ nanocrystals were obtained either by sol–gel or by hydrothermal synthesis. The produced nanomaterials were characterized by using TEM, SEM, XRD and DRS. Major differences in their photocatalytic performance depended on the nature of the precursors and the synthesis pathway.