CuO Nanowhiskers-Based Photocatalysts for Wastewater Treatment

Abstract

This article described the photocatalysts for wastewater treatment based on copper oxide (II). Research results of CuO nanowhiskers photocatalytic properties are showedand a series of nanowhiskers tests on organic pollutant (methylene blue)are given. It is shown that the copper oxide nanowhiskers able to purify water from organic pollution.

Photocatalytic Performance of Carbon-Containing CuMo-Based Catalysts under Sunlight Illumination

“…Among different potential transition metals, copper and molybdenum have received increasing attention due to some advantages such as low toxicity, low cost, and availability [16,17]. In addition, it has been reported that Cu-and Mo-based photocatalysts have a high photocatalytic activity in the degradation of different types of organic pollutants under UV-visible light [18][19][20][21][22][23][24][25]. However, scarce information can be found about two important limitations of Cu-and Mo-based photocatalysts: their low surface area and lixiviation issues during the photocatalytic reaction.…”

Performance of a C-containing Cu-based photocatalyst for the degradation of tartrazine: Comparison of performance in a slurry and CPC photoreactor under artificial and natural solar light

“…Among the transition metals, copper-based materials are widely investigated in many fields of application [18][19][20][21][22][23][24][25][26][27][28][29]. For instance, Cu-based oxides have been successfully used in transistors [18], spintronic devices [19], supercapacitors [20], as photocatalysts [21,[26][27][28][29],…”

“…Particularly, copper oxides are non-toxic, low-cost, and abundant semiconductors with energy bandgap values [25,26] between 1.2-1.7 eV for CuO and 1.9-2.4 eV for Cu2O, which makes them interesting candidates for photocatalytic applications under natural solar light. As a few examples, it has been reported that copper oxide catalyzes the photodegradation of organic pollutants such as phenol [28], and different types of dyes including methyl orange [21], methylene blue [27] and tartrazine [29].…”

Solution blow spinning (SBS)-assisted synthesis of well-defined carboxymethyl cellulose (CMC) nanowhiskers

“…These nanomaterials are synthesized from a plethora of materials, ranging from various metals to carbon-based materials. For example CuO nanowhiskers have been synthesized by electrolysis and heat treatment [3]. However, a lot of nanowhiskers have been made from biological components, like cellulose or cellulosebased nanowhiskers (CNW's), form porous and percolated networks held together by inter-particle hydrogen bonds [4].…”

“…CNW's have gained attention due to their remarkable mechanical properties, high aspect ratio, and a high specific surface area [2]. Such new features allow CNW's to have a vast array of applications like composite reinforcement [1], coating for sensors, electronics, and barrier membranes [4], hydrophobic materials [11], catalysts [3], and self-cleaning surfaces [12]. The use of cellulose-based nanomaterials also implies that the nanowhiskers are biodegradable and renewable.…”