Visible light driven multifunctional photocatalysis in TeO2-based semiconductor glass ceramics

Himmat Singh Kushwaha; Paramanandam Thomas; Rahul Vaish

doi:10.1117/1.JPE.7.016502

21 February 2017 Visible light driven multifunctional photocatalysis in TeO2-based semiconductor glass ceramics

Himmat Singh Kushwaha, Paramanandam Thomas, Rahul Vaish

Author Affiliations +

Journal of Photonics for Energy, Vol. 7, Issue 1, 016502 (February 2017). https://doi.org/10.1117/1.JPE.7.016502

Abstract

Photocatalytic <inline-formula< <mml:math display="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML"< <mml:mrow< <mml:mi<x</mml:mi< <mml:msub< <mml:mrow< <mml:mi<CaCu</mml:mi< </mml:mrow< <mml:mrow< <mml:mn<3</mml:mn< </mml:mrow< </mml:msub< <mml:msub< <mml:mrow< <mml:mi<Ti</mml:mi< </mml:mrow< <mml:mrow< <mml:mn<4</mml:mn< </mml:mrow< </mml:msub< <mml:msub< <mml:mrow< <mml:mi mathvariant="normal"<O</mml:mi< </mml:mrow< <mml:mrow< <mml:mn<12</mml:mn< </mml:mrow< </mml:msub< <mml:mo<−</mml:mo< <mml:mo stretchy="false"<(</mml:mo< <mml:mn<100</mml:mn< <mml:mo<−</mml:mo< <mml:mi<x</mml:mi< <mml:mo stretchy="false"<)</mml:mo< <mml:msub< <mml:mrow< <mml:mi<TeO</mml:mi< </mml:mrow< <mml:mrow< <mml:mn<2</mml:mn< </mml:mrow< </mml:msub< </mml:mrow< </mml:math< </inline-formula< (<inline-formula< <mml:math display="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML"< <mml:mrow< <mml:mi<x</mml:mi< <mml:mo<=</mml:mo< <mml:mn<0.25</mml:mn< <mml:mtext< </mml:mtext< <mml:mi<mol</mml:mi< <mml:mo<%</mml:mo< </mml:mrow< </mml:math< </inline-formula< to 3 mol%), glass nanocomposites were fabricated and investigated for wastewater treatment, self-cleaning surfaces, and photocatalytic hydrogen evolution. Visible light active crystals of Cu-doped <inline-formula< <mml:math display="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML"< <mml:mrow< <mml:msub< <mml:mi<TiO</mml:mi< <mml:mn<2</mml:mn< </mml:msub< </mml:mrow< </mml:math< </inline-formula< and <inline-formula< <mml:math display="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML"< <mml:mrow< <mml:msub< <mml:mi<TiTe</mml:mi< <mml:mn<3</mml:mn< </mml:msub< <mml:msub< <mml:mi mathvariant="normal"<O</mml:mi< <mml:mn<8</mml:mn< </mml:msub< </mml:mrow< </mml:math< </inline-formula< were grown by optimized crystallization of as-quenched glasses. The visible light photocatalytic activity of glass samples was investigated for estrogenic pharmaceutical pollutants, and the degradation rate was obtained as <inline-formula< <mml:math display="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML"< <mml:mrow< <mml:mn<168.56</mml:mn< <mml:mtext< </mml:mtext< <mml:msup< <mml:mrow< <mml:mi<min</mml:mi< </mml:mrow< <mml:mrow< <mml:mo<−</mml:mo< <mml:mn<1</mml:mn< </mml:mrow< </mml:msup< <mml:mtext< </mml:mtext< <mml:msup< <mml:mrow< <mml:mi mathvariant="normal"<m</mml:mi< </mml:mrow< <mml:mrow< <mml:mo<−</mml:mo< <mml:mn<2</mml:mn< </mml:mrow< </mml:msup< </mml:mrow< </mml:math< </inline-formula<. A higher photocatalytic <inline-formula< <mml:math display="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML"< <mml:mrow< <mml:msub< <mml:mi mathvariant="normal"<H</mml:mi< <mml:mn<2</mml:mn< </mml:msub< </mml:mrow< </mml:math< </inline-formula< production rate was observed (<inline-formula< <mml:math display="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML"< <mml:mrow< <mml:mn<135</mml:mn< <mml:mtext< </mml:mtext< <mml:mi<μ</mml:mi< <mml:mi<mole</mml:mi< <mml:mtext< </mml:mtext< <mml:msup< <mml:mrow< <mml:mi mathvariant="normal"<h</mml:mi< </mml:mrow< <mml:mrow< <mml:mo<−</mml:mo< <mml:mn<1</mml:mn

Citation Download Citation

Himmat Singh Kushwaha, Paramanandam Thomas, and Rahul Vaish "Visible light driven multifunctional photocatalysis in TeO2-based semiconductor glass ceramics," Journal of Photonics for Energy 7(1), 016502 (21 February 2017). https://doi.org/10.1117/1.JPE.7.016502

Received: 2 November 2016; Accepted: 1 February 2017; Published: 21 February 2017

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