Fabrication of a novel separation-free heterostructured photocatalyst with enhanced visible light activity in photocatalytic degradation of antibiotics

Abstract

A novel separation‐free poly(N,N′-dimethylacrylamide)-titanium dioxide/copper sulfide (PDMAA-TiO2/CuS) hydrogel photocatalyst with the synergistic effect of adsorption and photocatalysis has been successfully developed by a facile two-step method involving a homogeneous polymerization...

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

“…16−20 Among the photocatalysts, copper sulfide (CuS) has attracted substantial attention due to its high stability, suitable band gap, and appropriate morphology. 21,22 techniques are developed to synthesize CuS with different morphologies. 23−25 The synergy between covalent conjugation of folic acid with graphene oxide and subsequent deposition of CuS nanoflowers as a ternary photocatalyst assisted in the efficient degradation of aqueous solutions of rhodamine B, methylene blue (MB), methyl orange (MO), and alizarin red under NIR irradiation.…”

“…From this point of view, nanostructures, that can efficiently absorb visible light and generate charge carriers, have shown promise toward enzymatic and chemical photoreactions. − Moreover, nanomaterials, in the form of zeolite, oxide, and sulfide synthesized by a variety of techniques, have shown potential for multifunctional modern-day applications. − However, the best photocatalysts should be abundant, inexpensive, safe, extremely durable, and reusable. As a result, diverse transitional metal sulfides, oxides, and chalcogenides are studied as photocatalysts for water remediation under various conditions due to the flexibility in adjusting the morphology and band gaps. − Among the photocatalysts, copper sulfide (CuS) has attracted substantial attention due to its high stability, suitable band gap, and appropriate morphology. , Therefore, various techniques are developed to synthesize CuS with different morphologies. − The synergy between covalent conjugation of folic acid with graphene oxide and subsequent deposition of CuS nanoflowers as a ternary photocatalyst assisted in the efficient degradation of aqueous solutions of rhodamine B, methylene blue (MB), methyl orange (MO), and alizarin red under NIR irradiation . The reduced-graphene-oxide (rGO) and CuS nanocomposite eliminated ∼97% of malachite green after being subjected to solar irradiation for 90 min .…”

Controllable CO2 Reduction or Hydrocarbon Oxidation Driven by Entire Solar via Silver Quantum Dots Direct Photocatalysis

“…Solar-driven pollutant degradation (antibiotics, CO, NO x , volatile organic compounds, etc. ), [1,2] water splitting for hydrogen production, [3,4] and CO 2 reduction [5,6] are the focus of researchers for a long time. Solar-to-chemical conversion can be mainly realized by photovoltaic-electrolysis (PV-E), photoelectrocatalysis (PEC), and respond to the whole visible-infrared region.…”

Sustainable PHBV/CuS Composite Obtained from Waste Valorization for Wastewater Purification by Visible Light‐Activated Photocatalytic Activity

“…[19,20] It is worth noting that most of the aforementioned techniques lack sustainability because of the used harsh conditions and/or toxic fossil-based reagents. [21,22] In addition, the proposed approaches can be also very expensive on an industrial scale due to the cost of the used materials such as graphene, ozone, and MOF. [7,23] Whether adsorption membranes are applied for wastewater remediation, the antibiotics removal from the adsorbent will be mandatorily required adding a further step to the process, thus enhancing the process costs.…”