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tio2-rutile-nanorods
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Sunlight-driven photoelectrochemical sensor for direct determination of hexavalent chromium based on Au decorated rutile TiO2 nanorods
, Article Applied Catalysis B: Environmental ; Volume 201 , 2017 , Pages 411-418 ; 09263373 (ISSN) ; Goh, G. K. L ; Dolati, A ; Ghorbani, M ; Sharif University of Technology
Elsevier B.V
2017
Abstract
A highly sensitive and selective sunlight-driven photoelectrochemical sensor for the direct detection and reduction of chromium(VI) was developed based on single crystal rutile titanium dioxide nanorods decorated with gold nanoparticles. Under sun simulator illumination via the amperometric technique, these Au decorated TiO2 photoelectrodes exhibited the highest sensitivity (13.94 μA μM−1) ever reported among Au-based electrodes for Cr(VI) detection, with a very low detection limit (S/N = 3) of 0.006 μM and wide linear concentration range from 0.01 μM to 50 μM. Measurements in real water samples such as laboratory and river water also showed excellent anti-interference and recovery...
Aupd bimetallic nanoparticle decorated TiO2 rutile nanorod arrays for enhanced photoelectrochemical water splitting
, Article Journal of Applied Electrochemistry ; Volume 48, Issue 9 , 2018 , Pages 995-1007 ; 0021891X (ISSN) ; Jalali, M ; Kushwaha, A ; Kia Liang Goh, G ; Riahi Noori, N ; Dolati, A ; Ghorbani, M ; Sharif University of Technology
Abstract
Abstract: Here, the synthesis of TiO2 rutile nanorod arrays (TiO2 NRs) decorated with bimetallic gold–palladium cocatalyst nanoparticles (AuPd NPs) is described. The modified photoelectrode was characterized by field-emission scanning electron microscopy, high-resolution transmission electron microscopy, energy-dispersive spectroscopy, X-ray diffraction analysis, X-ray photoelectron spectroscopy, UV–vis spectroscopy, and electrochemical impedance spectroscopy (EIS). AuPd–TiO2 NRs (AuPd–TiO2) demonstrate high photocatalytic activity for photoelectrochemical (PEC) water splitting. The tailored structure of AuPd–TiO2 depicts a boosted photocurrent of 3.36 mA cm−2 under AM 1.5 illumination...