Small
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2026
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IF 11.8
Xinyi Han,Ziliang Deng,Yongping Yang,Zipeng Zhao
Self-supported electrodes represent a promising anode architecture for anion exchange membrane water electrolyzers; however, their practical implementation is hindered by an insufficient understanding of their formation mechanisms and the consequently limited catalytic efficiency and stability. In this work, we developed a self-supported electrode comprising a composite catalyst of β-Ni(OH) 2 and NiFe layered double hydroxide (LDH), grown on nickel felt (denoted as Ni(OH) 2 /NiFe-LDH/NFt) via a one-step hydrothermal process. We systematically investigated and clarified the role of NH 4 F in governing the synthesis of self-supported Ni(OH) 2 /NiFe-LDH/NFt. The coordination effect of F − with Fe 3+ and etching effect of NH 4 + on the surface oxide layer of nickel felt leads to favorable heterogeneous nucleation. Moreover, the etching effect provides an additional Ni source that favors the deposition of Ni(OH) 2 on NiFe-LDH. However, excess NH 4 + leads to the formation of Ni-based complex compounds in solution during the hydrothermal process and suppresses the deposition of Ni(OH) 2. When applying as the Ni(OH) 2 /NiFe-LDH/NFt anode catalyst in practical anion exchange membrane water electrolysis, it requires only 1.81 V to deliver 1.0 A cm −2 and exhibits outstanding durability, with no noticeable performance decay after 750 h of continuous operation at 0.5 A cm −2 .
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ACS Applied Materials & Interfaces
·
2026
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IF 7.8
Juan Tao,Xinrui Lu,Yuning Wei,Jiayi Feng,Jinlong Yang,Jianping Qi
Oral delivery of peptide therapeutics remains challenging due to gastrointestinal degradation, poor epithelial permeability, and extremely low bioavailability. To address these limitations, we developed an enteric solid formulation based on sorbic acid–choline ionic liquids (ILs) for the oral delivery of semaglutide (Sema), a glucagon-like peptide-1 (GLP-1) analogue. The IL-based enteric system was designed to enhance peptide stability, reduce gastric degradation, and promote intestinal absorption. In vitro studies demonstrated strong resistance to acidic conditions and pH-responsive release in simulated intestinal fluid. In vivo imaging further revealed prolonged intestinal retention of the IL-loaded enteric particles. Pharmacokinetic evaluation showed a 2.3-fold increase in maximum plasma concentration compared to the reference Rybelsus. In type 2 diabetes mellitus (T2DM) mice, the formulation achieved glucose-lowering efficacy comparable to subcutaneous Sema administration, with additional improvements in hepatic histology. Importantly, repeated-dose studies indicated favorable systemic and gastrointestinal tolerability under the tested conditions. Collectively, these results demonstrate that IL-based enteric formulation enhances oral peptide exposure while maintaining safety, offering a promising strategy for noninvasive T2DM management.
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Advanced Science
·
2026
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IF 14.1
Jingdan Lei,Kai Xu,Kunpeng Zhao,Junzhuo Zhou,Haotian Gao,Yifan Yuan,Tian-Ran Wei,Min Zhu,Qihao Zhang,Franck Gascoin,Xun Shi
Thermoelectric Mg 3 (Sb, Bi) 2 has emerged as a rising star in virtue of its promising thermoelectric performance and abundant constituent elements. However, its practical application is hindered by challenges in synthesis and the strong coupling between electrical and thermal transport properties. Herein, we propose a dual-pronged strategy that combines grain boundary engineering and phonon engineering to decouple electron and phonon transport in Mg 3 (Sb, Bi) 2 . By employing a tantalum-tube encapsulated melting technique together with Cu doping, the grain size is markedly increased to ∼25 µm, effectively suppressing carrier grain boundary scattering and enabling single-crystal-like electrical transport with a high carrier mobility exceeding 200 cm 2 V −1 s −1 . Meanwhile, atomic-scale alloy disorder and nanoscale Mg 2 Cu precipitates introduce strong phonon scattering, leading to an ultralow lattice thermal conductivity of 0.36 W m −1 K −1 . Eventually, a peak zT of 1.9 at 750 K and a high conversion efficiency of 10.6% at ΔT = 488 K are achieved, demonstrating the competitive performance of these materials and devices. This study not only provides new insights into the manipulation of grain boundary scattering, but also demonstrates the great promise of Mg 3 (Sb, Bi) 2 for waste-heat harvesting.
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CERAMICS INTERNATIONAL
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2026
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IF 6
Xiaolei Shi,Fuyu Li
Currently, microwave communication devices are rapidly evolving toward miniaturization, high stability, and cost-effectiveness. However, traditional microwave dielectric ceramics with moderate dielectric constants require excessively high sintering temperatures and exhibit poor microwave dielectric properties. Here, 2 wt % V 2 O 5 -modified Ba 3 Ti 4 Nb 4 O 21 (BTN) ceramic is prepared via solid-state reaction method. The sintering temperature of the BTN ceramic is successfully reduced from 1270°C to 975°C. This ceramic exhibits excellent microwave dielectric properties ( ε r = 47 (@5.78GHz), Q × f = 15,841 GHz (@5.78GHz), τ f = + 14.3 ppm/°C). Using XRD, SEM, EDS, Raman spectroscopy, and first-principles calculations, the changes in the microwave dielectric properties of BTN ceramics and their effects are elucidated. Based on this ceramic, a slot-coupled side-fed cylindrical dielectric resonant antenna was designed and investigated by full-wave electromagnetic simulation. The simulated antenna achieves excellent impedance matching and polarization isolation while maintaining a compact size: simulated center frequency is 6.74 GHz, BW = 200 MHz, and S 11 = -36.26 dB. This work demonstrates that BTN + 2 wt % V 2 O 5 microwave dielectric ceramics hold great potential for development in the field of 5G microwave communications.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2025
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IF 2.1
Bin Ou,Xiaofang Li,Lemei Huang,Yujiang Ke,Chaohui Che,Xiaobing Liu,Yajun Li,Kui Wu
The solubility of 2-chlorocinnamic acid in 16 pure organic solvents, including alcohols, esters, ketones, toluene, and acetonitrile, was determined by the gravimetric method at 272.15–321.55 K under 101.3 kPa. Results showed that solubility of 2-chlorocinnamic acid increased with temperature in all solvents. To correlate the experimental data, five thermodynamic models, i.e., the modified Apelblat, Buchowski–Ksiazaczak λh, NRTL, Wilson, and Yaws equations, were employed. Model accuracy was evaluated using average relative deviation (ARD) and root-mean-square deviation (RMSD), and all models provided satisfactory correlations. In addition, electrostatic potential energy surface analysis was carried out to preliminarily assess possible solute–solvent interactions, while density functional theory (DFT) calculations were used to further examine molecular interactions during dissolution. The Kamlet–Abboud–Taft linear solvation energy relationship (KAT-LSER) model was applied to analyze solvent effects. Thermodynamic functions, including enthalpy, entropy, and Gibbs free energy of mixing, were calculated using the Wilson model. The results revealed that the dissolution of 2-chlorocinnamic acid in the studied solvents is an endothermic, entropy-driven, and spontaneous process, indicating favorable solute–solvent interactions and enhanced solubility at higher temperatures.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Hengyi Wang,Yong-Fei Li,Xueli Niu,Peiyun Dai,Mingyu Dou,Guang Yang,Fatao Gong,Hongjie Zhu,Hua Yang,Jianmin Dou
Due to the consumption of traditional fossil fuels, human society faces global energy shortages and increasing environmental pollution problems. To address water pollution caused by the abuse of antibiotics and to promote green hydrogen production. In this paper, a Bi 2 WO 6 /CdS S-scheme heterojunction was prepared to realize the photocatalytic levofloxacin (LEV) degradation coupled with hydrogen production reaction. Under the introduction of [Co(bpy) 3 Cl 2 ] (CoBpy) as a molecular photosensitizer, the hydrogen production activity of Bi 2 WO 6 /CdS increased remarkably to 5395.9 μmol g −1 h −1 , meanwhile, the degradation rate of LEV could reach 87.5 %, which was much higher than that of the pure phase material and exhibited excellent stability over five cycles. The enhanced photocatalytic activity originates from the S-scheme heterojunction mechanism that enables the oxidizing and reducing abilities of the material to be fully exploited, meanwhile the sensitization of CoBpy further optimizes the charge transfer pathway, which realizes the combination of visible-light-driven wastewater treatment and green hydrogen production. Our findings provide an efficient and safe approach to environmental remediation and green energy production for a sustainable energy future.
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2026
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IF 7.1
Mengxuan Deng,Xu Kang,Shan Qiu,Huijing Wang,Chi Xu,Jie Qiu,Jizhou Jiang
Iron-enriched sludge generated from A-stage chemical capture in two-stage adsorption/bio-oxidation (A/B) wastewater treatment contains concentrated particulate organics, iron and phosphorus, yet its acidogenic conversion behavior and phosphorus speciation remain poorly understood. This work investigated semi-continuous anaerobic fermentation of this sludge under 2-bromoethanesulfonate (BES)-assisted conditions, and calcined fermentation residuals to characterize phosphorus/iron-bearing phases and evaluate their utilization potential. BES significantly enhanced organic solubilization and acidogenesis: the maximum short-chain fatty acid (SCFA) yield reached 373.2 ± 5.0 mg COD/g VS at 4-day sludge retention time, 26.6% higher than the control, with acetic acid dominating (>70% of total SCFAs). Activities of α-glucosidase, protease and phosphotransacetylase increased by 23%–80%. Phosphorus was predominantly retained in the solid phase, with iron-bound phosphorus (Fe-P) accounting for 49.8%–78.3% (elevated to 78.3% by BES) and total phosphorus recovery exceeding 89.1%. XRD and FTIR analyses confirmed iron oxide and inorganic phosphate structures in calcined residues. These findings support simultaneous liquid-phase SCFA recovery and high-value utilization of phosphorus/iron-rich residual solids. Download: Download high-res image (112KB) Download: Download full-size image
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Inorganic Chemistry Frontiers
·
2023
·Vol. 10
·期 7
·2107-2114
·
IF 7
Qin Wang,Jinxuan Ren,Dan Wang,Liling Cao,Xuehua Dong,Ling Huang,Daojiang Gao,Guohong Zou
Two fluorine antimony nitrates named (NH4)3SbF3(NO3)3 and (NH4)3SbF4(NO3)2 have been successfully synthesized by a low temperature molten salt method. Although these two title compounds possess NO3− groups and similar Sb-polyhedra, they exhibit completely different macroscopic centricities, (NH4)3SbF3(NO3)3 being noncentrosymmetric while (NH4)3SbF4(NO3)2 being centrosymmetric, which is induced by the discrepant coordination environments of Sb3+. Interestingly, the noncentrosymmetric (NH4)3SbF3(NO3)3 exhibits a strong second harmonic generation response (3.3 × KDP), a large birefringence (0.098@546 nm) and a large band gap (3.77 eV), indicating its potential as a UV nonlinear optical material. Detailed structure–property analysis confirms that the superior optical property is due to the synergistic effect of the planar π-conjugated NO3− groups and the stereochemically active lone pair containing Sb3+ cations.
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Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Lu-Qing Xie,Sui Peng,Ya-Nan Xin,Bo Liu,Xin-Yu Jiang,Jin-Gang Yu
A novel 3-dimensional graphene oxide/2-mercaptothiazoline (3D GO-MT) aerogel was prepared by using GO and MT which contains heteroatoms (nitrogen-, sulfur-) through a facile hydrothermal assembly process and a following freeze-drying technology . The effects of hydrothermal reaction temperature and GO-to-MT mass ratio on the physicochemical properties of the composites were investigated. The removal of Cu 2+ from aqueous solution by 3D GO-MT aerogels was evaluated. The results showed that the composite (GO-MT 1:3/100 °C ) with GO-to-MT mass ratio of 1:3 prepared at 100 °C had the highest adsorption capacity for Cu 2+ (0.5299 mmol g −1 ). In a bicomponent system of Cu 2+ /Pb 2+ , GO-MT 1:3/100 °C exhibited higher adsorption selectivity for Cu 2+ . And the distribution coefficients K of GO-MT 1:3/100 ° C for Cu 2+ /Y 3+ , Cu 2+ /Nd 3+ in the bicomponent systems were 0.6224 and 0.1253, respectively. The morphology and composition of GO-MT 1:3/100 °C , as well as the adsorption mechanism for Cu 2+ were investigated by scanning electron microscopy, Brunauer-Emmett-Teller, elemental analysis, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The presence of nitrogen and sulfur on MT heterocycle promoted the possible assembly of MT with GO through π-π stacking and hydrogen bonding interactions. Additionally, the existence of these heteroatoms in MT dominated the metal-chelate affinity of 3D GO-MT aerogel for selective adsorption of Cu 2+ . The fitted data of kinetics and thermodynamics showed that the adsorption process followed linear pseudo-second-order kinetics and linear Langmuir isotherm model. The adsorption process is non spontaneous and endothermic. The adsorption mechanism of GO-MT 1:3/100 °C for Cu 2+ involves coordination, cation-π electron interaction, electrostatic attraction and other intermolecular interactions. 3D GO-MT 1:3/100 °C can be used as an adsorbent material for selective adsorption/enrichment of Cu 2+ in aqueous solution.
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Nature Communications
·
2023
·Vol. 14
·期 1
·1-17
·
IF 16.6
Lei Hong,Alu Aqu,Yang Jingyun,He Xi,He Cai,Ren Wenyan,Chen Zimin,Hong Weiqi,Chen Li,He Xuemei,Yang Li,Li Jiong,Wang Zhenling,Wang Wei,Wei Yuquan,Lu Shuaiyao,Lu Guangwen,Song Xiangrong,Wei Xiawei
Mucosal immunity plays a significant role in the first-line defense against viruses transmitted and infected through the respiratory system, such as SARS-CoV-2. However, the lack of effective and safe adjuvants currently limits the development of COVID-19 mucosal vaccines. In the current study, we prepare an intranasal vaccine containing cationic crosslinked carbon dots (CCD) and a SARS-CoV-2 antigen, RBD-HR with spontaneous antigen particlization. Intranasal immunization with CCD/RBD-HR induces high levels of antibodies with broad-spectrum neutralization against authentic viruses/pseudoviruses of Omicron-included variants and protects immunized female BALB/c mice from Omicron infection. Despite strong systemic cellular immune response stimulation, the intranasal CCD/RBD-HR vaccine also induces potent mucosal immunity as determined by the generation of tissue-resident T cells in the lungs and airway. Moreover, CCD/RBD-HR not only activates professional antigen-presenting cells (APCs), dendritic cells, but also effectively targets nasal epithelial cells, promotes antigen binding via sialic acid, and surprisingly provokes the antigen-presenting of nasal epithelial cells. We demonstrate that CCD is a promising intranasal vaccine adjuvant for provoking strong mucosal immunity and might be a candidate adjuvant for intranasal vaccine development for many types of infectious diseases, including COVID-19.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
·
IF 5.2
Xianping Deng,Peiwen Wu,Xiaodong Du,Guining Lu,Yanyan Gong,Zhi Dang,Dongye Zhao
Combined heavy metals and chlorinated organic compounds have been widely reported in industrial wastewater. Yet, simultaneous removal of these contaminants remains challenging. In this study, a bi-functional composite (TNTs@AC) was prepared based on commercial titanium dioxide (TiO 2 ) and activated carbon (AC) and tested for simultaneous removal of Cd(II) and 2-chlorophenol (2-CP). Under the action of high temperature and pressure, TiO 2 was transformed into titanate nanotubes (TNTs) and bound to AC, and in the meanwhile, nanoscale AC particles were patched on the TNTs. In the mixed TNTs and AC phases, TNTs was responsible for taking up Cd(II), whereas AC for 2-CP. As such, the relative adsorption capacities of the composite for Cd(II) and 2-CP varied with the mass ratio of TiO 2 :AC, with decent uptakes for both chemicals in the mass ratio rage of 1:3 ∼1:1. TNTs@AC (prepared at TiO 2 :AC = 1:1) demonstrated fast sorption kinetics and high sorption capacities for both Cd(II) and 2-CP, with a maximum Langmuir adsorption capacity of 109 and 52 mg/g, respectively, in the single solute systems. In the binary systems, the adsorption capacity of Cd(II) was not affected by the presence of 2-CP, whereas the presence of Cd(II) slightly increased the uptake of 2-CP in the low Cd concentration domain (final Cd < 7 mg/L) but mildly inhibited the uptake at Cd > 7 mg/L. The dominant adsorption mechanism of Cd(II) was ion exchange between Cd(II) and Na + /H + of the -ONa/H group of TNTs; while AC served as the primary sink for 2-CP via hydrophobic interaction along with some other possible mechanisms such as surface complexation and hole filling. TNTs@AC also performed well under common environmental conditions (pH, common co-ions, and dissolved organic matter). The formation of mixed TNTs and AC microphases appears promising for simultaneous removal of heavy metals and organic compounds from contaminated water.
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MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Qirun Wang,Yanjie Duan,Zhixiong Huang,Xiaowei Xu,Jichao Shi,Lin Lin,Sheng Han,Runping Jia,Shufang Chang,Dandan Wu
Electrocatalysts with densely exposed sites and high intrinsic activity are desired for high-efficiency oxygen evolution reaction (OER). In this paper, we report the microwave assisted solvothermal growth of NiMoO 4 nanoflowers on electrodeposited Ni(OH) 2 nanosheets , forming a high specific surface area (132.5 m 2 g -1 ) nanoflower-like NiMoO 4 /Ni(OH) 2 configuration supported on a conductive nickel foam (NF) substrate. The as-prepared NiMoO 4 /Ni(OH) 2 /NF behaved efficiently as a self-supported 3D catalyst electrode for alkaline OER, compared with commercial RuO 2 (298 mV overpotential at 10 mA cm −2 and Tafel slope of 88.6 mV dec −1 ), needing a low overpotential of 292 mV to attain 10 mA cm −2 , with a small Tafel slope of 85.0 mV dec −1 and good stability for 100 h running at 10 mA cm −2 in 1.0 M KOH. Aside from enlarged surface area for more exposed edge sites for catalysis, the modulated synergy between Ni and Mo atoms probably contributes to enhanced intrinsic activity. A more electronegative Mo increases the electron density of Ni, thus accelerating the deprotonation of intermediates and driving the transition from Ni to NiOOH, leading to modulated thermodynamics and kinetics for OER catalysis.
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