查看更多>>摘要：The efficient mitigation of harmful nitrogen oxides (NO_x) under ambientconditions remains a challenging task。 Selective adsorption offers a viablesolution for the capture of low-concentration NO_x from the polluted streamat low temperatures。 This review summarizes recent progress in thedevelopment of NO_2 adsorbents， delves into the understanding of adsorptionmechanisms， and discusses the criteria for evaluating their performance。First， the present NO_2 adsorbents are categorized according to their distinctcharacteristics。 This review then provides insights into the mechanisms ofadsorption， highlighting the interaction between active sites and NO_2，drawing from both experimental and theoretical research。 The performance ofthese adsorbents is also assessed， focusing on their capacity， reusability，stability and selectivity。 Finally， perspectives are proposed to address thesignificant challenges and explore potential advancements for NO_2adsorbents， aiming to enhance their suitability for diverse practicalapplication scenarios。
Xingpeng TianChunchun YeLiyuan ZhangManoj K. Sugumar...
2402335.1-2402335.26页
查看更多>>摘要：Rapid uptake of lithium-centric technology， e。g。， electric vehicles andlarge-scale energy storage， is increasing the demand for efficient technologiesfor lithium extraction from aqueous sources。 Among variouslithium-extraction technologies， membrane processes hold great promise dueto energy efficiency and flexible operation in a continuous process withpotential commercial viability。 However， membrane separators facechallenges such as the extraction efficiency due to the limited selectivitytoward lithium relative to other species。 Low selectivity can be ascribed to theuncontrollable selective channels and inefficient exclusion functions。However， recent selectivity enhancements for other membrane applications，such as in gas separation and energy storage， suggest that this may also bepossible for lithium extraction。 This review article focuses on the innovationsin the membrane chemistries based on rational design following separationprinciples and unveiling the theories behind enhanced selectivity。Furthermore， recent progress in membrane-based lithium extractiontechnologies is summarized with the emphasis on inorganic， organic， andcomposite materials。 The challenges and opportunities for developing the nextgeneration of selective membranes for lithium recovery are also pointed out。
查看更多>>摘要：Chromium oxychloride (CrOCl)， a van der Waals antiferromagnetic insulator，has attracted significant interest in 2D optoelectronic， ferromagnetic， andquantum devices。 However， the bottom–up preparation of 2D CrOCl remainschallenging， limiting its property exploration and device application。 Herein，the controllable synthesis of 2D CrOCl crystals by chemical vapor deposition isdemonstrated。 The combination reaction of precursors together with the spaceconfinedgrowth strategy， providing stable and stoichiometric growth conditions，enable a robust synthesis of high-crystallinity CrOCl nanosheets withregular rhombus-like morphology and uniform thickness。 By tuning the growthtemperature from 675 to 800 ℃， the thickness of CrOCl nanosheets can becontinuously modulated from 10。2 to 30。8 nm， with the domain size increasingfrom 16。9 to 25。5 μm。 The as-grown CrOCl nanosheets exhibit significant structural/optical anisotropy， ultrahigh insulativity， and superior air stability。 Furthermore，a MoS2/CrOCl heterostructure with single-mirror symmetry stacking andultrastrong interfacial coupling is built to realize interfacial symmetry breaking，a novel interface phenomenon that converts MoS2 from isotropy to anisotropy。Consequently， the MoS2/CrOCl heterostructure device achieves polarizationsensitivephotodetection and bulk photovoltaic effect， which are nonexistentin high-symmetry 2D materials。 This work paves the way for the futureexploration of CrOCl-based 2D physics and devices via symmetry engineering。
Tamanna KhanTerry McAfeeThomas J. FerronAwwad Alotaibi...
2406281.1-2406281.8页
查看更多>>摘要：Superior properties in organic mixed ionic-electronic conductors (OMIECs)over inorganic counterparts have inspired intense interest in biosensing，soft-robotics， neuromorphic computing， and smart medicine。 However， slowion transport relative to charge transport in these materials is a limiting factor。Here， it is demonstrated that hydrophilic molecules local to an interfacialOMIEC nanochannel can accelerate ion transport with ion mobilities surpassingelectrophoretic transport by more than an order of magnitude。 Furthermore，ion access to this interfacial channel can be gated through local surface energy。This mechanism is applied in a novel sensing device， which electronically detectsand characterizes chemical reaction dynamics local to the buried channel。The ability to enhance ion transport at the nanoscale in OMIECs as well as governion transport through local chemical signaling enables new functionalitiesfor printable， stretchable， and biocompatible mixed conduction devices。
查看更多>>摘要：Solar steam generation (SSG) presents a promising approach to addressingthe global water crisis。 Central to SSG is solar photothermal conversion thatrequires efficient light harvesting and management。 Hierarchical structureswith multi-scale light management are therefore crucial for SSG。 At themolecular and sub-nanoscale levels， materials are fine-tuned for broadbandlight absorption。 Advancing to the nano- and microscale， structures aretailored to enhance light harvesting through internal reflections， scattering，and diverse confinement effects。 At the macroscopic level， light capture isoptimized through rationally designed device geometries， configurations， andarrangements of solar absorber materials。 While the performance of SSGrelies on various factors including heat transport， physicochemicalinteractions at the water/air and material/water interfaces， salt dynamics， etc。，efficient light capture and utilization holds a predominant role becausesunlight is the sole energy source。 This review focuses on the critical， yetoften underestimated， role of hierarchical light harvesting/management atdifferent dimensional scales in SSG。 By correlating light management with thestructure-property relationships， the recent advances in SSG are discussed，shedding light on the current challenges and possible future trends andopportunities in this domain。
查看更多>>摘要：Carbon dots are emerging luminescent nanomaterials that have drawnconsiderable attention due to their abundance， environmental friendliness， andcustomizable optical properties。 However， their susceptibility to temperatureinducedvibrational exciton changes and the tendency to thermal quenching ofemission have hindered their practical applications。 Here， a method is reportedfor achieving high-temperature photoluminescence carbonized polymer dots(CPDs) through a bi-confinement approach that involves a highly cross-linkedpolymer network and a rigid Al_2O_3 matrix。 As the temperature increased from303 to 500 K， the fluorescence and phosphorescence emission intensitiesof CPDs@Al_2O_3 remained virtually unchanged， with the emission durationexceeding 150 h at 500 K。 Additionally， CPDs@Al_2O_3 composites with differentdegrees of carbonization exhibit dynamic excitation-dependent photoluminescenceproperties， which can be patterned for multiple information encryptionapplication。 This work provides a concept for designing stable and luminousCPDs under harsh conditions， thus expanding their potential application range。
查看更多>>摘要：The ability to electrically manipulate spin states in magnetic materials isessential for the advancement of energy-efficient spintronic device， which istypically achieved in systems composed of a spin source and a magnetictarget， where the magnetic state of the target is altered by a charge current。While theories suggest that ferromagnets could function as more versatilespin sources， direct experimental studies involving only the spin source andtarget layers have been lacking。 Here electrical manipulation of spin states innoncolinear antiferromagnet Mn_3Sn using ferromagnets (Ni， Fe， NiFe， CoFeB)as the spin sources is reported。 Both field-free switching and switching withan assistive field are achieved in Mn3Sn/ferromagnet bilayers， where theswitching polarity correlates with the sign of anomalous Hall effect of theferromagnets。 The experimental findings can be accounted for by thepresence of spin currents arising from spin-dependent scattering within theferromagnets。 This finding provides valuable insights into the underlyingmechanisms of spin-conversion in ferromagnets， offering an alternative spinsource for novel technological applications。
查看更多>>摘要：Surgery remains an essential treatment for managing drug-resistantfocal epilepsy， but its accessibility and efficacy are limited in patients withoutdistinct structural abnormalities on magnetic resonance imaging (MRI)。Potassium ion (K~+)， a critical marker for seizure-associated neuronal signaling，shows significant promise for designing sensors targeting hidden epilepticfoci。 However， existing sensors cannot cross the blood-brain barrier and lackthe ability to specifically enrich and amplify K~+ signals in the brain with hightemporal and spatial resolution。 Here， an intravenously administered neuronalsignal sorting and amplifying nanosensor (NSAN) is reported that combinesreal-time dynamic reversible K+ fluorescence imaging with high-resolutionstructural MRI， enabling electroencephalogram-concordant imagingof MRI-negative epileptic foci。 Guided by NSANs， minimally invasive surgeryis successfully performed in both intrahippocampal kainic acid (KA) epilepsymodel with foci confined to the ipsilateral hippocampus， and intraperitonealKA model where foci are randomly distributed， resulting in sustainedseizure control and cognitive improvement。 These findings highlightthe NSAN as a transformative tool for visualizing hidden epileptic foci，thereby broadening eligibility for minimally invasive and precision surgicalintervention。
查看更多>>摘要：Halide-perovskite semiconductors have a high potential for use in singlejunctionand tandem solar cells。 Despite their unprecedented rise in power conversionefficiencies (PCEs) for photovoltaic (PV) applications， it remains unclearwhether perovskite solar modules can reach a sufficient operational lifetime。 Inorder to make perovskite solar cells (PSCs) commercially viable， a fundamentalunderstanding of the relationship between their nanostructure， optoelectronicproperties， device efficiency， and long-term operational stability/reliabilityneeds to be established。 In this review， the phase instabilities in state-of-the-artformamidinium (FA)-rich perovskite absorbers is discussed。 Furthermore，the concerted efforts are summarized in this prospect， covering aspects fromfundamental research to device engineering。 Subsequently， a critical analysisof the dictating impact of the nanoscale landscape of perovskite materials ontheir resulting intrinsic stability is provided。 Finally， the remaining challengesin the field are assessed and future research directions are proposed for improvingthe operational lifetimes of perovskite devices。 It is believed that theseapproaches， which bridge nanoscale structural properties to working solar celldevices， will be critical to assessing the realization of a bankable PSC product。
查看更多>>摘要：Organic light-emitting diodes (OLEDs) based on hyperfluorescent systemhave attracted widespread attention due to their ability to simultaneouslyachieve improvements in efficiency， lifetime， and color purity by combiningthe advantages of high exciton utilization sensitizers and high-color purityemitters。 Traditional hyperfluorescent systems typically involve three or fourcomponents and are severely sensitive to the doping concentration (≈0。5wt%) of a terminal emitter， which inevitably causes high costs and difficultiesin reproducibility。 Here， a novel design concept for a matrix-free hyperfluorescent(MFHF) system that employs a combination of an anti-quenchingTADF host and a high color purity MR-TADF emitter is proposed。 This strategyallows traditional concentration-sensitive MR-TADF emitters to significantlyimprove exciton utilization and reduce exciton lifetime at high doping levels，without the need for complex molecular modifications。 The OLEDs withbinary emissive layer achieve pure-green emission， a maximum externalquantum efficiency of over 30%， and a high maximum power efficiency of145 lm W~(−1)。 The approach offers a straightforward and universal method toachieve anti-quenching matrix-free hyperfluorescent OLEDs with high colorpurity， making them promising for commercial applications in low-costultra-high-definition (UHD) displays。
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