Abstract:Marine biofouling is one of the most significant challenges hindering practical uranium extraction from seawater. Single atoms have been widely used in catalytic applications because of their remarkable redox property, implying that the single atom is highly capable of catalyzing the generation of reactive oxygen species (ROS) and acts as an anti-biofouling substance for controlling biofouling. In this study, the Co single atom loaded polyacrylamidoxime (PAO) material, PAO-Co, is fabricated based on the bindin… Show more
“…Moreover, the characteristic carbonyl peak of as-synthesized PAE-NC was shifted from 1,714 cm −1 to around 1,696-1,699 cm −1 after alkaline hydrolysis according to FTIR spectra shown in Figure 1C, which could be due to the alternation of intermolecular hydrogen bonding by hydrolysis treatment. Moreover, it should be noted that the vibration peak of the nitrile group at 2,230 cm −1 still presented even after hydrolysis for 8 h, implying that it was quite challenging to realize the complete transformation of nitriles by the heterogeneous alkaline treatment, and similar results were also reported by another group (Sun et al, 2022). Anyway, the hydrolysis leads to partial nitriles of PAE-NC transformation into carboxyl groups, which would provide additional reactive sites for postfunctionalization or further surface modification.…”
Emulsion confinement self-assembly of block copolymer has witnessed increasing research interest in the recent decade, but the post-functionalization and application of the resultant polymeric micro/nano-particles are still in their infancy. In this work, a super-engineering polyarylene ether containing pendent nitrile and carboxyl (PAE-NC) has been synthesized and converted into polymeric microparticles for macromolecular enrichment via emulsion confinement self-assembly and subsequent surface modification. Moreover, the encapsulation capacity of PAE-NC was evaluated using hydrophobic fluorescent quantum dots (QD) as a functional probe. Particularly, we found that both the as-synthesized PAE-NC and its hydrolyzed derivatives could be converted into microparticles via emulsion confinement self-assembly. Furthermore, the co-self-assembly of red-emitting QD and PAE-NC enables the phase transfer of hydrophobic QD into hydrophilic luminescent microparticles with the persisted fluorescence emission. Based on these results, the current PAE-NC would be served as a versatile and robust matrix to fabricate advanced microparticles or microcapsules for various applications.
“…Moreover, the characteristic carbonyl peak of as-synthesized PAE-NC was shifted from 1,714 cm −1 to around 1,696-1,699 cm −1 after alkaline hydrolysis according to FTIR spectra shown in Figure 1C, which could be due to the alternation of intermolecular hydrogen bonding by hydrolysis treatment. Moreover, it should be noted that the vibration peak of the nitrile group at 2,230 cm −1 still presented even after hydrolysis for 8 h, implying that it was quite challenging to realize the complete transformation of nitriles by the heterogeneous alkaline treatment, and similar results were also reported by another group (Sun et al, 2022). Anyway, the hydrolysis leads to partial nitriles of PAE-NC transformation into carboxyl groups, which would provide additional reactive sites for postfunctionalization or further surface modification.…”
Emulsion confinement self-assembly of block copolymer has witnessed increasing research interest in the recent decade, but the post-functionalization and application of the resultant polymeric micro/nano-particles are still in their infancy. In this work, a super-engineering polyarylene ether containing pendent nitrile and carboxyl (PAE-NC) has been synthesized and converted into polymeric microparticles for macromolecular enrichment via emulsion confinement self-assembly and subsequent surface modification. Moreover, the encapsulation capacity of PAE-NC was evaluated using hydrophobic fluorescent quantum dots (QD) as a functional probe. Particularly, we found that both the as-synthesized PAE-NC and its hydrolyzed derivatives could be converted into microparticles via emulsion confinement self-assembly. Furthermore, the co-self-assembly of red-emitting QD and PAE-NC enables the phase transfer of hydrophobic QD into hydrophilic luminescent microparticles with the persisted fluorescence emission. Based on these results, the current PAE-NC would be served as a versatile and robust matrix to fabricate advanced microparticles or microcapsules for various applications.
“…However, the biggest potential disadvantage of using these spectral conversion materials when they are immersed in microalga cultures is the biofouling of the LSDs. Current technologies in anti-biofouling might provide solutions [ 141 , 142 ]. Fig.…”
Section: Spectral Conversion Materials For Microalgae Culturesmentioning
Photosynthesis is the most important biological process on Earth that converts solar energy to chemical energy (biomass) using sunlight as the sole energy source. The yield of photosynthesis is highly sensitive to the intensity and spectral components of light received by the photosynthetic organisms. Therefore, photon engineering has the potential to increase photosynthesis. Spectral conversion materials have been proposed for solar spectral management and widely investigated for photosynthesis by modifying the quality of light reaching the organisms since the 1990s. Such spectral conversion materials manage the photon spectrum of light by a photoconversion process, and a primary challenge faced by these materials is increasing their efficiencies. This review focuses on emerging spectral conversion materials for augmenting the photosynthesis of plants and microalgae, with a special emphasis on their fundamental design and potential applications in both greenhouse settings and microalgae cultivation systems. Finally, a discussion about the future perspectives in this field is made to overcome the remaining challenges.
“…14,15 For example, the commercial AF series adsorbent developed by ORNL possesses a capacity of 6 mg after 56 days of adsorption in the Sequim Bay. Moreover, Wang's group developed a variety of PAO-based adsorbents, including crosslinked PAO membranes, 9 antibacterial PDA-PAO 16 and PAO-Co. 17 Although these adsorbents possess attractive prospects for engineering applications, there is still an urgent need to further improve their adsorption efficiency to reduce the cost of uranium extraction.…”
Uranium resources in the ocean are very rich, and it is an ideal substitute for the increasingly depleted terrestrial uranium mines. Hence, it is urgently needed to develop absorbents simultaneously...
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