Abstract:Centralized water treatment has dominated in developed urban areas over the past century, although increasing challenges with this model demand a shift to a more decentralized approach wherein advanced oxidation processes (AOPs) can be appealing treatment options. Efforts to overcome the fundamental obstacles that have thus far limited the practical use of traditional AOPs, such as reducing their chemical and energy input demands, target the utilization of heterogeneous catalysts. Specifically, recent advances… Show more
“…The aim of AOP is to generate HO·by oxidation of OH − via h+VB and O 2 •− by inhomogeneous reduction of dissolved O 2 with e–CB . It can degrade and oxidize nonbiodegradable toxic organic pollutants in the surroundings . Ultimately, it eliminates the successive dosage of redox.…”
Section: Photocatalysismentioning
confidence: 99%
“…ENM‐enabled photocatalytic AOPs. Reproduced with permission . Copyright 2018, Macmillan Publishers Limited, part of Springer Nature.…”
Section: Photocatalysismentioning
confidence: 99%
“…Water pollution is considered as the most prominent issue of global public‐health challenge with more and more serious situation . It is estimated that nearly one‐third of the population around the world cannot access clean drinking water . The World Health Organization (WHO) revealed that deaths of millions of children under 5years annually were caused by diarrhea, which is related to the ingestion of unsafe water, inadequate sanitation, or hygiene issues .…”
Water shortage and the energy crisis are two major global challenges in this century. The solution for water crisis should be based on a sustainable energy source. Solar‐inspired water purification is an efficient and green technology for tackling the water challenge using abundant and clean solar energy through photothermal evaporation‐induced water production, photoinduced antimicrobial treatment, and photocatalytic degradation of organic contaminants. 2D nanomaterials draw significant attention for their use these three water‐purification methods because of their large surface area, broadband and strong absorption in the solar spectral range, and efficient photothermal and photocatalytic transformation. Herein, the recent development of 2D nanomaterials applied in photothermal evaporation, photoinduced antimicrobial treatment, and photocatalytic capability is comprehensively overviewed. Various strategies in enhancing the light‐absorption and light‐conversion efficiency for different 2D nanomaterials are presented. The challenges and perspectives of these 2D nanomaterials are further discussed for practical water purification. This Review highlights these green energy–driven water‐purification methods based on emerging 2D materials.
“…The aim of AOP is to generate HO·by oxidation of OH − via h+VB and O 2 •− by inhomogeneous reduction of dissolved O 2 with e–CB . It can degrade and oxidize nonbiodegradable toxic organic pollutants in the surroundings . Ultimately, it eliminates the successive dosage of redox.…”
Section: Photocatalysismentioning
confidence: 99%
“…ENM‐enabled photocatalytic AOPs. Reproduced with permission . Copyright 2018, Macmillan Publishers Limited, part of Springer Nature.…”
Section: Photocatalysismentioning
confidence: 99%
“…Water pollution is considered as the most prominent issue of global public‐health challenge with more and more serious situation . It is estimated that nearly one‐third of the population around the world cannot access clean drinking water . The World Health Organization (WHO) revealed that deaths of millions of children under 5years annually were caused by diarrhea, which is related to the ingestion of unsafe water, inadequate sanitation, or hygiene issues .…”
Water shortage and the energy crisis are two major global challenges in this century. The solution for water crisis should be based on a sustainable energy source. Solar‐inspired water purification is an efficient and green technology for tackling the water challenge using abundant and clean solar energy through photothermal evaporation‐induced water production, photoinduced antimicrobial treatment, and photocatalytic degradation of organic contaminants. 2D nanomaterials draw significant attention for their use these three water‐purification methods because of their large surface area, broadband and strong absorption in the solar spectral range, and efficient photothermal and photocatalytic transformation. Herein, the recent development of 2D nanomaterials applied in photothermal evaporation, photoinduced antimicrobial treatment, and photocatalytic capability is comprehensively overviewed. Various strategies in enhancing the light‐absorption and light‐conversion efficiency for different 2D nanomaterials are presented. The challenges and perspectives of these 2D nanomaterials are further discussed for practical water purification. This Review highlights these green energy–driven water‐purification methods based on emerging 2D materials.
“…SPE is of great significance in catalyst design for environmental treatment by AOPs . AOPs (i.e., PC‐AOPs, EC‐AOPs, PEC‐AOPs, and FAOPs) have been regularly defined as water treatment processes conducted under mild conditions (room temperature and standard pressure) and based on the in situ formation of a series of ROSs at an adequate concentration to efficiently remove the contaminants .…”
Section: Spe For Environmental Treatmentmentioning
confidence: 99%
“…There are limited reports about optimizing the efficiency of these kinds of treatment methods through phase engineering. Alternatively, most organic pollutants can be removed via a unique class of oxygenolysis techniques known as advanced oxidation processes (AOPs) . Based on the driving force for the production of ROS (reactive oxygen species) during the above processes, AOPs can be divided into the following categories: photochemical AOPs (PC‐AOPs), electrochemical AOPs (EC‐AOPs), photoelectrochemical AOPs (PEC‐AOPs) and Fenton‐like AOPs (FAOPs).…”
The structure–property engineering of phase‐based materials for redox‐reactive energy conversion and environmental decontamination nanosystems, which are crucial for achieving feasible and sustainable energy and environment treatment technology, is discussed. An exhaustive overview of redox reaction processes, including electrocatalysis, photocatalysis, and photoelectrocatalysis, is given. Through examples of applications of these redox reactions, how structural phase engineering (SPE) strategies can influence the catalytic activity, selectivity, and stability is constructively reviewed and discussed. As observed, to date, much progress has been made in SPE to improve catalytic redox reactions. However, a number of highly intriguing, unresolved issues remain to be discussed, including solar photon‐to‐exciton conversion efficiency, exciton dissociation into active reductive/oxidative electrons/holes, dual‐ and multiphase junctions, selective adsorption/desorption, performance stability, sustainability, etc. To conclude, key challenges and prospects with SPE‐assisted redox reaction systems are highlighted, where further development for the advanced engineering of phase‐based materials will accelerate the sustainable (active, reliable, and scalable) production of valuable chemicals and energy, as well as facilitate environmental treatment.
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