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Vipul Bansal - One of the best experts on this subject based on the ideXlab platform.
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combining the uv switchability of keggin ions with a galvanic replacement process to fabricate tio2 polyoxometalate bimetal nanocomposites for improved surface enhanced raman scattering and solar light photocatalysis
ACS Applied Materials & Interfaces, 2013Co-Authors: Andrew Pearson, Sheshanath V. Bhosale, Suresh K Bhargava, Vipul BansalAbstract:While the decoration of TiO2 surfaces with metal nanoparticles has been well-established, the modification of the composition of metal nanoparticles postdeposition onto TiO2 surfaces and applicability of such bimetallic systems for surface enhanced Raman scattering (SERS) and photocatalysis has not hitherto been investigated. In this work, we, for the first time, combine the unique UV-switchability of the Keggin ions of 12-phosphotungstic acid (PTA) to directly form metal nanoparticles (Ag and Cu) onto the colloidal TiO2 surface, with a galvanic replacement process to convert these predeposited metal nanoparticles into bimetallic systems (Ag/Au, Ag/Pt, Cu/Au, Cu/Pt, and Cu/Ag). We further demonstrate the applicability of these novel TiO2–polyoxometalate–bimetal nanocomposites toward improved SERS and solar light photocatalysis.
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Combining the UV-Switchability of Keggin Ions with a Galvanic Replacement Process to Fabricate TiO2–Polyoxometalate–Bimetal Nanocomposites for Improved Surface Enhanced Raman Scattering and Solar Light Photocatalysis
ACS Applied Materials & Interfaces, 2013Co-Authors: Andrew Pearson, Sheshanath V. Bhosale, Suresh K Bhargava, Vipul BansalAbstract:While the decoration of TiO2 surfaces with metal nanoparticles has been well-established, the modification of the composition of metal nanoparticles postdeposition onto TiO2 surfaces and applicability of such bimetallic systems for surface enhanced Raman scattering (SERS) and photocatalysis has not hitherto been investigated. In this work, we, for the first time, combine the unique UV-switchability of the Keggin ions of 12-phosphotungstic acid (PTA) to directly form metal nanoparticles (Ag and Cu) onto the colloidal TiO2 surface, with a galvanic replacement process to convert these predeposited metal nanoparticles into bimetallic systems (Ag/Au, Ag/Pt, Cu/Au, Cu/Pt, and Cu/Ag). We further demonstrate the applicability of these novel TiO2–polyoxometalate–bimetal nanocomposites toward improved SERS and solar light photocatalysis.
Andrew Pearson - One of the best experts on this subject based on the ideXlab platform.
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combining the uv switchability of keggin ions with a galvanic replacement process to fabricate tio2 polyoxometalate bimetal nanocomposites for improved surface enhanced raman scattering and solar light photocatalysis
ACS Applied Materials & Interfaces, 2013Co-Authors: Andrew Pearson, Sheshanath V. Bhosale, Suresh K Bhargava, Vipul BansalAbstract:While the decoration of TiO2 surfaces with metal nanoparticles has been well-established, the modification of the composition of metal nanoparticles postdeposition onto TiO2 surfaces and applicability of such bimetallic systems for surface enhanced Raman scattering (SERS) and photocatalysis has not hitherto been investigated. In this work, we, for the first time, combine the unique UV-switchability of the Keggin ions of 12-phosphotungstic acid (PTA) to directly form metal nanoparticles (Ag and Cu) onto the colloidal TiO2 surface, with a galvanic replacement process to convert these predeposited metal nanoparticles into bimetallic systems (Ag/Au, Ag/Pt, Cu/Au, Cu/Pt, and Cu/Ag). We further demonstrate the applicability of these novel TiO2–polyoxometalate–bimetal nanocomposites toward improved SERS and solar light photocatalysis.
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Combining the UV-Switchability of Keggin Ions with a Galvanic Replacement Process to Fabricate TiO2–Polyoxometalate–Bimetal Nanocomposites for Improved Surface Enhanced Raman Scattering and Solar Light Photocatalysis
ACS Applied Materials & Interfaces, 2013Co-Authors: Andrew Pearson, Sheshanath V. Bhosale, Suresh K Bhargava, Vipul BansalAbstract:While the decoration of TiO2 surfaces with metal nanoparticles has been well-established, the modification of the composition of metal nanoparticles postdeposition onto TiO2 surfaces and applicability of such bimetallic systems for surface enhanced Raman scattering (SERS) and photocatalysis has not hitherto been investigated. In this work, we, for the first time, combine the unique UV-switchability of the Keggin ions of 12-phosphotungstic acid (PTA) to directly form metal nanoparticles (Ag and Cu) onto the colloidal TiO2 surface, with a galvanic replacement process to convert these predeposited metal nanoparticles into bimetallic systems (Ag/Au, Ag/Pt, Cu/Au, Cu/Pt, and Cu/Ag). We further demonstrate the applicability of these novel TiO2–polyoxometalate–bimetal nanocomposites toward improved SERS and solar light photocatalysis.
Suresh K Bhargava - One of the best experts on this subject based on the ideXlab platform.
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combining the uv switchability of keggin ions with a galvanic replacement process to fabricate tio2 polyoxometalate bimetal nanocomposites for improved surface enhanced raman scattering and solar light photocatalysis
ACS Applied Materials & Interfaces, 2013Co-Authors: Andrew Pearson, Sheshanath V. Bhosale, Suresh K Bhargava, Vipul BansalAbstract:While the decoration of TiO2 surfaces with metal nanoparticles has been well-established, the modification of the composition of metal nanoparticles postdeposition onto TiO2 surfaces and applicability of such bimetallic systems for surface enhanced Raman scattering (SERS) and photocatalysis has not hitherto been investigated. In this work, we, for the first time, combine the unique UV-switchability of the Keggin ions of 12-phosphotungstic acid (PTA) to directly form metal nanoparticles (Ag and Cu) onto the colloidal TiO2 surface, with a galvanic replacement process to convert these predeposited metal nanoparticles into bimetallic systems (Ag/Au, Ag/Pt, Cu/Au, Cu/Pt, and Cu/Ag). We further demonstrate the applicability of these novel TiO2–polyoxometalate–bimetal nanocomposites toward improved SERS and solar light photocatalysis.
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Combining the UV-Switchability of Keggin Ions with a Galvanic Replacement Process to Fabricate TiO2–Polyoxometalate–Bimetal Nanocomposites for Improved Surface Enhanced Raman Scattering and Solar Light Photocatalysis
ACS Applied Materials & Interfaces, 2013Co-Authors: Andrew Pearson, Sheshanath V. Bhosale, Suresh K Bhargava, Vipul BansalAbstract:While the decoration of TiO2 surfaces with metal nanoparticles has been well-established, the modification of the composition of metal nanoparticles postdeposition onto TiO2 surfaces and applicability of such bimetallic systems for surface enhanced Raman scattering (SERS) and photocatalysis has not hitherto been investigated. In this work, we, for the first time, combine the unique UV-switchability of the Keggin ions of 12-phosphotungstic acid (PTA) to directly form metal nanoparticles (Ag and Cu) onto the colloidal TiO2 surface, with a galvanic replacement process to convert these predeposited metal nanoparticles into bimetallic systems (Ag/Au, Ag/Pt, Cu/Au, Cu/Pt, and Cu/Ag). We further demonstrate the applicability of these novel TiO2–polyoxometalate–bimetal nanocomposites toward improved SERS and solar light photocatalysis.
Sheshanath V. Bhosale - One of the best experts on this subject based on the ideXlab platform.
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combining the uv switchability of keggin ions with a galvanic replacement process to fabricate tio2 polyoxometalate bimetal nanocomposites for improved surface enhanced raman scattering and solar light photocatalysis
ACS Applied Materials & Interfaces, 2013Co-Authors: Andrew Pearson, Sheshanath V. Bhosale, Suresh K Bhargava, Vipul BansalAbstract:While the decoration of TiO2 surfaces with metal nanoparticles has been well-established, the modification of the composition of metal nanoparticles postdeposition onto TiO2 surfaces and applicability of such bimetallic systems for surface enhanced Raman scattering (SERS) and photocatalysis has not hitherto been investigated. In this work, we, for the first time, combine the unique UV-switchability of the Keggin ions of 12-phosphotungstic acid (PTA) to directly form metal nanoparticles (Ag and Cu) onto the colloidal TiO2 surface, with a galvanic replacement process to convert these predeposited metal nanoparticles into bimetallic systems (Ag/Au, Ag/Pt, Cu/Au, Cu/Pt, and Cu/Ag). We further demonstrate the applicability of these novel TiO2–polyoxometalate–bimetal nanocomposites toward improved SERS and solar light photocatalysis.
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Combining the UV-Switchability of Keggin Ions with a Galvanic Replacement Process to Fabricate TiO2–Polyoxometalate–Bimetal Nanocomposites for Improved Surface Enhanced Raman Scattering and Solar Light Photocatalysis
ACS Applied Materials & Interfaces, 2013Co-Authors: Andrew Pearson, Sheshanath V. Bhosale, Suresh K Bhargava, Vipul BansalAbstract:While the decoration of TiO2 surfaces with metal nanoparticles has been well-established, the modification of the composition of metal nanoparticles postdeposition onto TiO2 surfaces and applicability of such bimetallic systems for surface enhanced Raman scattering (SERS) and photocatalysis has not hitherto been investigated. In this work, we, for the first time, combine the unique UV-switchability of the Keggin ions of 12-phosphotungstic acid (PTA) to directly form metal nanoparticles (Ag and Cu) onto the colloidal TiO2 surface, with a galvanic replacement process to convert these predeposited metal nanoparticles into bimetallic systems (Ag/Au, Ag/Pt, Cu/Au, Cu/Pt, and Cu/Ag). We further demonstrate the applicability of these novel TiO2–polyoxometalate–bimetal nanocomposites toward improved SERS and solar light photocatalysis.
Elif Akiska - One of the best experts on this subject based on the ideXlab platform.
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Üç Boyutlu cevher kütle modellemesi yardımı ile bir maden galerisinin planlanması: Çulfa Çukuru Pb- Zn-Cu-Ag yatağından örnek bir çalışma
General Directorate of Mineral Research and Exploration, 2018Co-Authors: Sinan Akiska, Elif AkiskaAbstract:Çulfa Çukuru Pb-Zn-Cu-Ag cevherleşmesi, Biga Yarımadası’nda Sakarya zonuna ait metamorfitler ile metamorfit-volkanik kayaç dokanakları boyunca ortaya çıkmıştır. Bu kayaçların dokanakları ve kırık-çatlak düzlemleri boyunca gelişmiş baz metal (Pb-Zn-Cu-Ag±Au) cevherleşmeleri, kalksilikatik kayaç toplulukları içerisinde damar, mercek, saçınımlı cevher geometrileri şeklinde gözlenmektedir. Baz metal cevherleşmeler esas olarak yan kayaç (litoloji) kontrollü olup genellikle rekristalize kireçtaşları ile ilişkili olarak bulunmaktadır. Bu çalışmada Kalkım (Çanakkale) ilçesinin 20 km güney-güneydoğusunda yer alan Çulfa Çukuru bölgesine ait topoğrafik veriler yardımı ile yeryüzü ve yine bu bölgede gözlenen Pb-Zn yatağında yapılmış olan 42 adet yer üstü ve yer altı sondajlarında kesilen cevherli zonlar ve bunlara ait %Pb ve %Zn değerleri modellenmiştir. Yüzey ve yeryüzü verileri sırasıyla “Krigleme” ve “Ters Mesafe Ağırlıklı” yöntemlerle interpole edilmişlerdir. Yapılan her iki modelleme çalışması da çapraz doğrulama yöntemi ve tahmin hataları ile denetlenmiştir. Bu çalışmadan elde edilen %Pb ve % Zn verilerinden, işletme sınırı üzerinde kalan alanlar 4 farklı sektöre ayrılarak kesişim alanları tespit edilmiştir. Bunların yer altındaki konumları da kullanılarak muhtemel galeri hatları belirlenmeye çalışılmış ve 450 katı için de yorumlanmış bir galeri haritası çizilmiştir. Yapılan bu modelleme çalışması, bir bölgede açılacak olan maden galerilerinin planlanmasına yardımcı olmaktadır. Ayrıca günün koşullarında meydana gelebilecek önemli değişikliklere göre (örn. maliyetlerin artması ya da azalması, metal fiyatlarındaki değişiklikler) işletme sırasında da modeller üzerinde değişiklik yapılabilinir
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An ore adit planning with the help of three dimensional ore body modeling: A case study from Çulfa Çukuru Pb-Zn-Cu-Ag deposit
Bulletin of the mineral research and exploration, 2017Co-Authors: Sinan Akiska, Elif AkiskaAbstract:Culfa Cukuru Pb-Zn-Cu-Ag cevherlesmesi, Biga Yarimadasi’nda Sakarya zonuna ait metamorfitler ile metamorfit-volkanik kayac dokanaklari boyunca ortaya cikmistir. Bu kayaclarin dokanaklari ve kirik-catlak duzlemleri boyunca gelismis baz metal (Pb-Zn-Cu-Ag±Au) cevherlesmeleri, kalksilikatik kayac topluluklari icerisinde damar, mercek, sacinimli cevher geometrileri seklinde gozlenmektedir. Baz metal cevherlesmeler esas olarak yan kayac (litoloji) kontrollu olup genellikle rekristalize kirectaslari ile iliskili olarak bulunmaktadir. Bu calismada Kalkim (Canakkale) ilcesinin 20 km guney-guneydogusunda yer alan Culfa Cukuru bolgesine ait topografik veriler yardimi ile yeryuzu ve yine bu bolgede gozlenen Pb-Zn yataginda yapilmis olan 42 adet yer ustu ve yer alti sondajlarinda kesilen cevherli zonlar ve bunlara ait %Pb ve %Zn degerleri modellenmistir. Yuzey ve yeryuzu verileri sirasiyla “Krigleme” ve “Ters Mesafe Agirlikli” yontemlerle interpole edilmislerdir. Yapilan her iki modelleme calismasi da capraz dogrulama yontemi ve tahmin hatalari ile denetlenmistir. Bu calismadan elde edilen %Pb ve % Zn verilerinden, isletme siniri uzerinde kalan alanlar 4 farkli sektore ayrilarak kesisim alanlari tespit edilmistir. Bunlarin yer altindaki konumlari da kullanilarak muhtemel galeri hatlari belirlenmeye calisilmis ve 450 kati icin de yorumlanmis bir galeri haritasi cizilmistir. Yapilan bu modelleme calismasi, bir bolgede acilacak olan maden galerilerinin planlanmasina yardimci olmaktadir. Ayrica gunun kosullarinda meydana gelebilecek onemli degisikliklere gore (orn. maliyetlerin artmasi ya da azalmasi, metal fiyatlarindaki degisiklikler) isletme sirasinda da modeller uzerinde degisiklik yapilabilinir.