Improved Photocatalytic Degradation of Organic Dyes by ZnO‐Nanoflowers

Abstract

Recently, we reported one pot synthesis of ZnO nanoflowers (ZnO-NFs) by using asymmetric Zn(II) dimeric complex, [Zn (hmp-H) [hmp-H = 2-(2-hydroxymethyl)pyridine)] as a single molecular precursor at room temperature (RT). The prepared ZnO-NFs catalyst was systematically probed for its structural, morphological and functional properties. Our primary aim was to utilize ZnO-NFs to find a superior photocatalyst for the degradation of different dyes such as Methyl orange (MO), Congo red (CR), Chicago sky blue (CSB) and Eosin B (EO) which are commonly found in industrial waste and are major contributor to the river pollutant. In order to overcome this problem, we explored the photocatalytic performance of ZnO-NFs, which results in improved photocatalytic activity towards MO dye (15 mg/L, 99.46 %) compared to other dyes CR, CSB and EO. Based on the photocatalytic evaluations, ZnO-NFs could possess versatile photocatalytic properties for remediation of contaminated water.

Zinc Oxide for Functional Textile Coatings: Recent Advances

“…If ZnO Ps are present on the surface of textile fibers, ZnO is capable of photodegrading various organic colored and colorless dirt stains when it encounters them [116]. In this case, the direct photooxidation of the organic compounds by reaction with h + VB and the indirect photooxidation of the organic compounds by reaction with ROS occur [75,117]. This leads to the decomposition of organic compounds and their removal from textile fibers.…”

Enhanced Photocatalytic Activity of ZnO Toward the Degradation of Methylene Blue Dye: Effects of Fe3+ and Sn4+ Doping

“…Nanometer ZnO is a multifunctional semiconductor material that is widely applied as a photocatalyst . ZnO photocatalyst is used to degrade organic pollutants in industrial wastewater .…”

Enthralling Adsorption of Different Dye and Metal Contaminants from Aqueous Systems by Cobalt/Cobalt Oxide Nanocomposites Derived from Single‐Source Molecular Precursors

“…Water pollution is a serious challenge and necessity of waste water treatment has been increasing due to the rapid industrialization worldwide . Dyes in the form of industrial waste are main environmental polluters, as they are water soluble and are toxic for human and aquatic life . These dyes are non‐biodegradable, decrease the penetration of sunlight into water, and affecting the process of photosynthesis in the aquatic life, and are potentially carcinogenic and toxic to human ,,,,,,.…”

“…These dyes are non‐biodegradable, decrease the penetration of sunlight into water, and affecting the process of photosynthesis in the aquatic life, and are potentially carcinogenic and toxic to human ,,,,,,. Due to their highly stable nature towards temperature, light and other chemicals, they are difficult to degrade/remove …”

“…There are a wide range of metal oxides with nanostructures possess prospective applications in water remediation, sensors, supercapacitors and catalysis due to their high surface area, low cost, and significant properties . In particular, much attention has been focused on the wastewater treatment due to their high degradation efficiency, excellent physical and chemical properties, high stability, reusability, and low toxicity ,,,,. Variety ofdifferent metal oxides and composites have been used as the adsorbents and the photocatalysts for waste water treatment purposes from aqueous solution such as including TiO 2 , ZnO, Fe 3 O 4 , SnO 2 , CuO, Co 3 O 4 etc ,,,,…”