Hematite-based nanomaterials for photocatalytic degradation of pharmaceuticals and personal care products (PPCPs): A short review

Asif, Abdul Hannan; Wang, Shaobin; Sun, Hongqi

doi:10.1016/j.cogsc.2021.100447

Cited by 48 publications

(28 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[125][126][127][128] Thus, a wide variety of water decontamination methods utilizing micro-and nano-adsorbents and/or photocatalysts have been developed. [129][130][131] In addition, microwave-and ultrasonic-assisted pollutants catalysis approaches have gained wide interest in this eld due to their synergistic effect of converging the dispersed microwave and ultrasound elds onto the reactive sites of the catalyst. 60,132,133 These synergetic methods produce thermal or discharge effects around the catalyst, which lead to the in situ degradation of contaminants.…”

Section: Application Of Micro and Nanoscale Magnetic Catalytic System...mentioning

confidence: 99%

Functionalized hybrid magnetic catalytic systems on micro- and nanoscale utilized in organic synthesis and degradation of dyes

et al. 2022

View full text Add to dashboard Cite

show abstract

Section: Application Of Micro and Nanoscale Magnetic Catalytic System...mentioning

confidence: 99%

Functionalized hybrid magnetic catalytic systems on micro- and nanoscale utilized in organic synthesis and degradation of dyes

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The low photonic efficiency is still characteristic of photocatalysis itself [12], independently of the light source. Nevertheless, the recent developments in UV-LED technology could decrease E EO values 10 to 20 times in the next five years [2], which would have a direct impact on the feasibility and overall expenses of the process.…”

Section: Electrical Energy Per Order (Eeo) Analysismentioning

confidence: 99%

“…Among possible water treatment solutions, advanced oxidation processes (AOPs) have shown a high degradation potential due to the formation of reactive oxygen species (ROS), especially the hydroxyl radical ( • OH), which are able to oxidize persistent pollutants [10][11][12]. However, these processes are highly energy-demanding [13].…”

Section: Introductionmentioning

confidence: 99%

Performance of TiO2/UV-LED-Based Processes for Degradation of Pharmaceuticals: Effect of Matrix Composition and Process Variables

et al. 2022

View full text Add to dashboard Cite

Ultra-violet light-emitting diode (UV-LED)-based processes for water treatment have shown the potential to surpass the hurdles that prevent the adoption of photocatalysis at a large scale due to UV-LEDs’ unique features and design flexibility. In this work, the degradation of five EU Watch List 2020/1161 pharmaceutical compounds was comprehensively investigated. Initially, the UV-A and UV-C photolytic and photocatalytic degradation of individual compounds and their mixtures were explored. A design of experiments (DoE) approach was used to quantify the effects of numerous variables on the compounds’ degradation rate constant, total organic carbon abatement, and toxicity. The reaction mechanisms of UV-A photocatalysis were investigated by adding different radical scavengers to the mix. The influence of the initial pH was tested and a second DoE helped evaluate the impact of matrix constituents on degradation rates during UV-A photocatalysis. The results showed that each compound had widely different responses to each treatment/scenario, meaning that the optimized design will depend on matrix composition, target pollutant reactivity, and required effluent standards. Each situation should be analyzed individually with care. The levels of the electrical energy per order are still unfeasible for practical applications, but LEDs of lower wavelengths (UV-C) are now approaching UV-A performance levels.

show abstract

“…The applications of these 3DMs are still limited to simple separation such as oil and water separation, dye and heavy metal removals, and simple catalysis. Applications in the degradation and complete elimination of emerging contaminants such as pharmaceuticals and personal care products (PPCPs) (Asif et al, 2021) and disinfections are still quite scarce. 4.…”

Section: Concluding Remarks and Perspectivesmentioning

confidence: 99%

Wastewater Remediation Technologies Using Macroscopic Graphene-Based Materials: A Perspective

Hirani

Asif

Rafique

et al. 2021

Front. Nanotechnol.

Self Cite

View full text Add to dashboard Cite

Three-dimensional (3D) graphene-based macrostructures are being developed to combat the issues associated with two-dimensional (2D) graphene materials in practical applications. The 3D macrostructures (3DMs), for example, membranes, fibres, sponges, beads, and mats, can be formed by the self-assembly of 2D graphene-based precursors with exceptional surface area and unique chemistry. With rational design, the 3D macrostructures can then possess outstanding properties and exclusive structures. Thanks to various advantages, these macrostructures are competing in a variety of applications with promising performances unlike the traditional activated carbons, biochars and hydrochars, which have less flexibilities for modifications towards versatile applications. However, despite having such a wide range of applications, 3DMs remain applicable on laboratory scale due to the associated factors like cost and extensive research. This perspective provides an overview of available graphene-based macrostructures and their diverse synthesis protocols. In the synthesis, hydrothermal route, chemical vapor deposition (CVD), wet spinning, 3D printing, vacuum filtration, spray drying and emulsion methods are highlighted. In addition, the physio-chemical properties of these macrostructures are discussed with the relationship among the porosity, surface area and the bulk density. The perspective also highlights the versatile potentials of different 3DMs in wastewater remediation by adsorption, desalination, and catalytic oxidation, etc. Following the concluding remarks, future outlooks on commercial applications of 3DMs are also provided.

show abstract

Hematite-based nanomaterials for photocatalytic degradation of pharmaceuticals and personal care products (PPCPs): A short review

Cited by 48 publications

References 52 publications

Functionalized hybrid magnetic catalytic systems on micro- and nanoscale utilized in organic synthesis and degradation of dyes

Functionalized hybrid magnetic catalytic systems on micro- and nanoscale utilized in organic synthesis and degradation of dyes

Performance of TiO2/UV-LED-Based Processes for Degradation of Pharmaceuticals: Effect of Matrix Composition and Process Variables

Wastewater Remediation Technologies Using Macroscopic Graphene-Based Materials: A Perspective

Contact Info

Product

Resources

About