Carbon-based heterogeneous photocatalysts for water cleaning technologies: a review

Lopes, Joana L.; Martins, Maria João; Nogueira, Helena I. S.; Estrada, Ana C.; Trindade, Tito

doi:10.1007/s10311-020-01092-9

Cited by 36 publications

(11 citation statements)

References 294 publications

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“…Different types of metal and metal oxide nanoparticles including silver, copper, palladium, zinc oxide, magnesium oxide, tin oxide are synthesized with various polymers and used for antimicrobial activity, food packaging, and improving shelflife of food (Rai et al 2018). Carbon-based nanostructures such as semiconductor compounds and polyoxometalates are used for water purification (Lopes et al 2021).…”

Section: Advances In Polymer Composites By the Use Of Nanofillersmentioning

confidence: 99%

Polymeric composite materials for radiation shielding: a review

et al. 2021

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The rising use of radioactive elements is increasing radioactive pollution and calling for advanced materials to protect individuals. For instance, polymers are promising due to their mechanical, electrical, thermal, and multifunctional properties. Moreover, composites made of polymers and high atomic number fillers should allow to obtain material with low-weight, good flexibility, and good processability. Here we review the synthesis of polymer materials for radiation protection, with focus on the role of the nanofillers. We discuss the effectivness of polymeric materials for the absorption of fast neutrons. We also present the recycling of polymers into composites.

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Section: Advances In Polymer Composites By the Use Of Nanofillersmentioning

confidence: 99%

Polymeric composite materials for radiation shielding: a review

et al. 2021

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“…Graphene supports were obtained by graphene oxide reduction (rGO, reduced graphene oxide). These materials have been optimized for application in the photocatalytic degradation of water pollutants of pharmaceutical origin, one of the most important classes of emergent environmental contaminants ( Lopes et al, 2021 ). The new electron transfer features resulting from the synergetic combination of POMs and rGO have been explored in photocatalysis.…”

Section: Nanomaterials For Water Cleaning Nanotechnologiesmentioning

confidence: 99%

Colloidal nanomaterials for water quality improvement and monitoring

et al. 2022

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Water is the most important resource for all kind forms of live. It is a vital resource distributed unequally across different regions of the globe, with populations already living with water scarcity, a situation that is spreading due to the impact of climate change. The reversal of this tendency and the mitigation of its disastrous consequences is a global challenge posed to Humanity, with the scientific community assuming a major obligation for providing solutions based on scientific knowledge. This article reviews literature concerning the development of nanomaterials for water purification technologies, including collaborative scientific research carried out in our laboratory (nanoLAB@UA) framed by the general activities carried out at the CICECO-Aveiro Institute of Materials. Our research carried out in this specific context has been mainly focused on the synthesis and surface chemical modification of nanomaterials, typically of a colloidal nature, as well as on the evaluation of the relevant properties that arise from the envisaged applications of the materials. As such, the research reviewed here has been guided along three thematic lines: 1) magnetic nanosorbents for water treatment technologies, namely by using biocomposites and graphite-like nanoplatelets; 2) nanocomposites for photocatalysis (e.g., TiO2/Fe3O4 and POM supported graphene oxide photocatalysts; photoactive membranes) and 3) nanostructured substrates for contaminant detection using surface enhanced Raman scattering (SERS), namely polymers loaded with Ag/Au colloids and magneto-plasmonic nanostructures. This research is motivated by the firm believe that these nanomaterials have potential for contributing to the solution of environmental problems and, conversely, will not be part of the problem. Therefore, assessment of the impact of nanoengineered materials on eco-systems is important and research in this area has also been developed by collaborative projects involving experts in nanotoxicity. The above topics are reviewed here by presenting a brief conceptual framework together with illustrative case studies, in some cases with original research results, mainly focusing on the chemistry of the nanomaterials investigated for target applications. Finally, near-future developments in this research area are put in perspective, forecasting realistic solutions for the application of colloidal nanoparticles in water cleaning technologies.

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“…Singular material has difficulties to simultaneously combine the desirable merits of high performance OWS photocatalysts, including proper band edges, abundant visible light absorption, efficient charge transfer and highly active surface sites, and so forth. Constructing heterojunctions can take the advantages of constituent materials and meanwhile their synergistic effects can bring special physicochemical properties that are beneficial to promote the photocatalytic performance 121–127 . Herein, we briefly take some representative examples to introduce the development of OWS of GCN primarily from the aspect of Type I/II heterostructure and Z scheme (with the similarity to natural photosynthesis).…”

Section: Modulation Strategies Of Gcn For Photocatalytic Overall Water Splittingmentioning

confidence: 99%

Photocatalytic overall water splitting by graphitic carbon nitride

Niu

Dai

Zhi

et al. 2021

InfoMat

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Photocatalytic overall water splitting (OWS) without using any sacrificial reagent to realize H2 and O2 production in the stoichiometric ratio of 2:1 is viewed as the “holy grail” in the field of solar fuel production. Developing stable, low cost, and nontoxic photocatalysts that have satisfactory solar‐to‐hydrogen conversion efficiency is of significance but challenging for realizing the large‐scale use of this sustainable technology. Among various photocatalysts, graphitic carbon nitride (GCN) has shown great potential as an ideal candidate to fulfill the breakthrough in this dynamic research field due to its attractive physicochemical properties. Herein, for the first time, the state‐of‐the‐art research progress of GCN for photocatalytic OWS is reviewed. We first summarize the basic principle of photocatalytic OWS along with the advantages/challenges of GCN introduced. The strategies that have been used to modulate the OWS activity of GCN are then reviewed, including cocatalyst investigation, morphology modulation, atomic structure modification, crystallinity engineering, and heterostructure construction. Toward the end of the review, the concluding remarks and perspectives for the future development are presented, with our expectation to provide some new ideas for the design of advanced OWS photocatalysts.

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Carbon-based heterogeneous photocatalysts for water cleaning technologies: a review

Cited by 36 publications

References 294 publications

Polymeric composite materials for radiation shielding: a review

Polymeric composite materials for radiation shielding: a review

Colloidal nanomaterials for water quality improvement and monitoring

Photocatalytic overall water splitting by graphitic carbon nitride

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