Chem Commun (Camb)
August 2025
Correction for 'A Lewis basic CeO cocatalyst expedites two-electron air electroreduction at the theoretical limit' by Lili Jiang , , 2025, https://doi.org/10.1039/D5CC00909J.
View Article and Find Full Text PDFChem Commun (Camb)
August 2025
Two-electron air electroreduction has shown low efficiency at the theoretical limit. Here, a Lewis basic CeO cocatalyst was used to expedite the reaction, achieving >90% Faradaic efficiency at the theoretical limit. Theoretical and experimental analyses demonstrate that the incorporation of CeO alters the electronic structure of ZnO, thereby enhancing selective oxygen adsorption.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
July 2025
Using high-purity oxygen (O) for electrofixation would increase the production cost of hydrogen peroxide (HO) because of requiring complex pre-treatment procedures. Atmospheric air is an abundant source, but the direct air electrofixation has proved to be very challenging, that in common conception against nitrogen (N) in the system. According to the Le Chatelier's principle, O concentration is diluted by N (78%) in atmospheric air, which reduces overall reaction rates/equilibrium.
View Article and Find Full Text PDFThe production effect (PE) is a phenomenon where reading words aloud, rather than silently, during study leads to improved recognition memory. Human recognition memory can be divided into recollection (recognition based on complex contextual information) and familiarity (recognition based on a sense of familiarity). This study explored how reading aloud affects recollection and familiarity using electroencephalography (EEG) in a mixed-list design.
View Article and Find Full Text PDFQ J Exp Psychol (Hove)
September 2025
The conflict monitoring theory posits that the simultaneous activation of incompatible responses in the current trial leads to response conflict. Conflict occurrence signals to enhance attention to the target stimulus, reduce attention to distracting stimuli, and ultimately lead to conflict adaptation (i.e.
View Article and Find Full Text PDFThe selective oxygen reduction reaction (ORR) is important for various energy conversion processes such as the fuel cells and metal-air batteries for the 4e pathway and hydrogen peroxide (HO) electrosynthesis for the 2e pathway. However, it remains a challenge to tune the ORR selectivity of a catalyst in a controllable manner. Herein, an efficient strategy for introducing sulfur dopants to regulate the ORR selectivity of main-group Sb-N-C single-atom catalysts is reported.
View Article and Find Full Text PDFIt is important for people to disengage attention from a distraction, which can help them complete the task at hand as quickly as possible. Recent studies have shown that people's attention stays longer on reward-distractors than on loss-distractors, and a delay in attentional disengagement is noted when reward-distractors are present. However, few studies have examined whether attentional disengagement from an evaluative distractor relies upon working memory (WM) components.
View Article and Find Full Text PDFHepatocellular carcinoma (HCC) has gradually become a pronoun for terrifying death owing to its high mortality rate. With the progression of HCC, lipid droplets (LDs) in HCC cells exhibit specific variations such as increased LDs number and decreased polarity, which can serve as the diagnostic target. However, developing an effective method to achieve HCC diagnosis and reveal LDs polarity heterogeneity is still a crucial challenge.
View Article and Find Full Text PDFAttentional capture and disengagement are distinct process involved in attentional orienting. Most current studies have examined either the process of attentional capture or disengagement by manipulating stimuli associated with either positive (gains) or negative outcomes (losses). However, few studies have investigated whether attentional capture and disengagement are modulated by reward and loss outcomes.
View Article and Find Full Text PDFSelective two-electron (2e) oxygen reduction reaction (ORR) offers great opportunities for hydrogen peroxide (HO) electrosynthesis and its widespread employment depends on identifying cost-effective catalysts with high activity and selectivity. Main-group metal and nitrogen coordinated carbons (M-N-Cs) are promising but remain largely underexplored due to the low metal-atom density and the lack of understanding in the structure-property correlation. Here, we report using a nanoarchitectured SbS template to synthesize high-density (10.
View Article and Find Full Text PDFMikrochim Acta
December 2022
R-CDAs have been synthesized in a one-pot solvothermal procedure starting from 3,4-diaminobenzoic acid in an acidic medium. Transmission electron microscopy (TEM) revealed that R-CDAs nanoparticles exhibited a much larger diameter of 7.2-28.
View Article and Find Full Text PDFFront Behav Neurosci
November 2022
An increased reaction time often occurs after error responses (post-error slowing, PES). However, the role of top-down regulation in post-error processing remains to be debated. Impairing cognitive control function through acute stress would help to investigate the role and stage of top-down adaptive regulation in post-error processing.
View Article and Find Full Text PDFAttentional disengagement is of great significance to individuals adapting to their environment who can benefit from disregarding the attraction of salient and task-irrelevant objects. Previous studies have suggested that, in addition to causing greater financial loss compared with neutral distractors, reward distractors hold attention longer than neutral distractors. However, few studies have directly compared the attentional disengagement differences between reward-associated and loss- or punishment-associated stimuli.
View Article and Find Full Text PDFGraphene-supported single-atom catalysts (SACs) are promising alternatives to precious metals for catalyzing the technologically important hydrogen evolution reaction (HER), but their performances are limited by the low intrinsic activity and insufficient mass transport. Herein, a highly HER-active graphene-supported Co-N-C SAC is reported with unique design features in the morphology of the substrate and the microenvironment of the single metal sites: i) the crumpled and scrolled morphology of the graphene substrate circumvents the issues encountered by stacked nanoplatelets, resulting in improved exposure of the electrode/electrolyte interfaces (≈10 times enhancement); ii) the in-plane holes in graphene preferentially orientate the Co atoms at the edge sites with low-coordinated Co-N configuration that exhibits enhanced intrinsic activity (≈2.6 times enhancement compared to the conventional Co-N moiety), as evidenced by detailed experiments and density functional theory calculations.
View Article and Find Full Text PDFThe development of strategies for tuning the electronic structure of the metal sites in single-atom catalysts (SACs) is the key to optimizing their activity. Herein, we report that iodine doping within the carbon matrix of a cobalt-nitrogen-carbon (Co-N-C) catalyst can effectively modulate its electronic structure and catalytic activity toward the hydrogen evolution reaction (HER). The iodine-doped Co-N-C catalyst shows exceptional HER activity in acid with an overpotential of merely 52 mV at 10 mA cm, a small Tafel slope of 56.
View Article and Find Full Text PDFElectrochemical synthesis of hydrogen peroxide (H O ) via the 2-electron oxygen reduction reaction (ORR) has emerged as a promising alternative to the energy-intensive anthraquinone process and catalysts combining high selectivity with superior activity are crucial for enhancing the efficiency of H O electrosynthesis. In recent years, single-atom catalysts (SACs) with the merits of maximum atom utilization efficiency, tunable electronic structure, and high mass activity have attracted extensive attention for the selective reduction of O to H O . Although considerable improvements are made in the performance of SACs toward the 2-electron ORR process, the principles for modulating the catalytic properties of SACs by adjusting the electronic structure remain elusive.
View Article and Find Full Text PDFLipid droplets (LDs) play indispensable roles in numerous physiological processes; hence, the visualization of the dynamic behavior of LDs in living cells is of great importance in physiological and pathological research. In this article, the quantitative structure-activity relationship (QSAR) theory was employed as an effective design strategy for the development of organelle-targeting carbon dots (CDs). The lipid-water partition coefficient (Log ) of the QSAR was adopted as a key parameter to predict the cellular uptake and subcellular localization of CDs in live cells.
View Article and Find Full Text PDFMetal- and nitrogen-doped carbon (M-N-C) materials as a unique class of single-atom catalysts (SACs) have increasingly attracted attention as the replacement of platinum for the hydrogen evolution reaction (HER); however, their employment as HER electrodes at high current densities of industrial level remains a grand challenge. Herein, an aligned porous carbon film embedded with single-atom Co-N-C sites of exceptional activity and stability at high current densities is designed. Within the film, the atomic CoN moieties exhibit high intrinsic activity, while the multiscale porosity of the carbon frameworks with vertically aligned microchannels afford facilitated mass transfer under the conditions of high production rate and ultrathick electrodes.
View Article and Find Full Text PDFLuminescence
September 2020
A 'turn-on' fluorescence method for detection of hydrogen peroxide (H O ) in marine food samples is presented in this article. Using this method, a carbon dots (CDs)-MnO probe was formed in which fluorescence intensity (FI) of CDs was quenched through fluorescence resonance energy transfer by addition of MnO nanosheets. When H O was added into the CDs-MnO solution, the MnO nanosheets formed Mn ions due to a redox reaction between H O and MnO nanosheets, and CD FI was recovered.
View Article and Find Full Text PDFInt J Phytoremediation
April 2020
The effects of mixotrophic cultivation on antioxidation and lipid production of in wastewater treatment were analyzed. The biomass and lipid content of the mixotrophic cultured in wastewater were higher compared with the autotrophic cultured in BG-11. The mixotrophic provided more fatty acids as the contents of total fatty acids rose.
View Article and Find Full Text PDFUnder the double pressures of both the energy crisis and environmental pollution, the exploitation and utilization of hydrogen, a clean and renewable power resource, has become an important trend in the development of sustainable energy-production and energy-consumption systems. In this regard, the electrocatalytic hydrogen evolution reaction (HER) provides an efficient and clean pathway for the mass production of hydrogen fuel and has motivated the design and construction of highly active HER electrocatalysts of an acceptable cost. In particular, graphene-based electrocatalysts commonly exhibit an enhanced HER performance owing to their distinctive structural merits, including a large surface area, high electrical conductivity, and good chemical stability.
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