Synthesis of Nanoporous Structured SnO₂and its Photocatalytic Ability for Bisphenol A Destruction

Abstract

Nanoporous structured tin dioxide (SnO 2 ) is characterized and its application in the photocatalytic destruction of endocrine, Bisphenol A, is examined. Transmission electron microscopy (TEM) reveals irregularly shaped nanopores of size 2.0-4.5 nm. This corresponds to the result of an average nanopore distribution of 4.5 nm, as determined by Barret-Joyner-Halenda (BJH) plot from the isotherm curve. The photoluminescence (PL) curve, corresponding to the recombination between electron and hole, largely decreases in the TiO 2 /nanoporous SnO 2 composite. Finally, a synergy effect between TiO 2 and porous SnO 2 is exhibited in photocatalysis: the photocatalytic destruction of Bisphenol A is improved by combining the nanoporous structured SnO 2 with TiO 2 , and 75% decomposition of 10.0 ppm of Bisphenol A is achieved after 24 h.

Effective Carbon Dioxide Photoreduction over Metals (Fe-, Co-, Ni-, and Cu-) Incorporated TiO2/Basalt Fiber Films

“…Band-gap (eV) suggests that the electrons in the valence band are transferred to the conduction band and are stabilized by photoemission. In general, the PL intensity increases with increasing number of electrons emitted, resulting from recombination between the excited electrons and holes, and a consequent decrease in photoactivity [35]. Therefore, there is a strong relationship between the PL intensity and photoactivity.…”

Development of a carbon-supported Sn–SnO2 photocatalyst by a new hybridized sol–gel/dextran approach

“…Tin oxide has uses in various applications including photovoltaic devices, transparent conductive electrodes, photocatalysts, gas sensors, and anode materials of secondary lithium batteries. [1][2][3][4][5][6][7][8][9][10][11][12][13] Depending on the application, the particle size, morphology, and dimensionality of SnO 2 has a direct impact on its performance. [14][15][16] Due to tin oxide's importance, a variety of methods have been investigated for the preparation of nanostructured SnO 2 including sol-gel methods, electrodeposition, hydrothermal synthesis, spray pyrolysis, and aerosol ame deposition.…”

“…2,[5][6][7] The destruction of organic pollutants in aquatic systems with nontoxic, readily collectible, relatively cheap catalyst is an area of intense research focus. [4][5][6] This demand for improved catalysts has led to the development of new synthetic strategies for tin oxide in addition to exploration of various method to improve performance of this photocatalyst. [4][5][6][7] As a result of earlier research, the focus is on simple synthetic strategies that develop easily tailorable photocatalyst.…”

“…[4][5][6] This demand for improved catalysts has led to the development of new synthetic strategies for tin oxide in addition to exploration of various method to improve performance of this photocatalyst. [4][5][6][7] As a result of earlier research, the focus is on simple synthetic strategies that develop easily tailorable photocatalyst. In doing so one can gain fundamental insight into pathways of photocatalysis while simultaneously developing a more efficient semiconductor.…”