HYDROMETALLURGY
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2026
·
IF 6.3
Qianshun Wen,Yuefeng Deng,Ji Chen,Shuang Sun
Yttrium (Y) is extensively utilized in various industries for its excellent optical, electrical, and magnetic properties. However, the separation between Y and other rare earth elements (REEs) is difficult, because the properties of Y are very similar to other REEs. To overcome the drawbacks of traditional extractants, such as complex structural composition and poor stability, it is important to develop new extractants for separating Y. Featured in this study is a novel carboxylic acid extractant, 2-hexyldecanoic acid (DY319, HA), employed for extraction and separation of Y. The pK a value of DY319 is 7.54. The extraction sequence of REEs with DY319 is as follows: Lu > Yb > Eu > Tm > Er > Ho ≈ Tb > Dy > Pr > Gd > Nd ≈ Sm > Ce > Y > La. Additionally, the extraction parameters, including the extractant concentration, saponification degree, phase volume ratio, equilibration time, and temperature, were carefully studied. The separation factors of separating Y from other REEs were measured, and the separation factors between Y and Ho, Er, Tm, Yb, Lu are 2.37, 2.46, 3.05, 4.05, and 4.12, respectively. Moreover, it exhibits excellent recyclability and loading capacity. Quantitative stripping can be accomplished with HCl by single-stage stripping. Through a cascade extraction process with 16-stage extraction and 4-stage scrubbing, the Y product with 99.9 wt% purity was obtained. Ultimately, the extraction process is governed by the cation exchange reaction, and the extraction complex was deduced to be REA 3 .
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Leibing Chen,Kairui Li,Jing Li,Xinwei Du,Haisheng Wei
The development of highly dispersed supported noble-metal catalysts is crucial for maximizing atomic utilization and enhancing catalytic performance. This work demonstrates a highly efficient Au–Pt bimetallic catalyst supported on 2-methylimidazole-modified ZnO (N-ZnO) for the chemoselective hydrogenation of nitroarenes. The modification creates strong anchoring sites for metal precursors, which, as confirmed by DFT calculations, effectively suppress metal aggregation and yield highly dispersed nanoparticles with an average size of 2.9 nm. The resulting Au–Pt/N-ZnO catalyst exhibits exceptional performance in the hydrogenation of p-chloronitrobenzene under mild conditions (50 °C and 0.5 MPa H2), achieving >99% conversion and 98.6% selectivity to p-chloroaniline, significantly outperforming its monometallic counterparts due to the synergistic effect. The catalyst also exhibited excellent recyclability and broad substrate applicability for various substituted nitroarenes. This work provides an effective strategy for fabricating highly efficient supported bimetallic catalysts through the organic ligand-mediated surface modification of metal oxide supports.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Wenxing Jiang,Yuanting Peng,Qiqi Wan,Endao Zhang,Junbo Hou,Xiaodong Zhuang,Changchun Ke
Direct ammonia borane fuel cells (DABFCs) offer promising portable energy solutions but face limitations from sluggish anodic kinetics and electrode degradation. This study introduces a three-dimensional hierarchical Pd-integrated nanostructured electrode (Pd-INE) synergizing nanostructuring with interfacial engineering. Vertically oriented Pd-decorated nanosheets are electronically coupled to nickel foam (NF) via Ni(OH) 2 , maximizing active site accessibility and structural stability. Density functional theory (DFT) confirms 1.18 e − transfer from Pd to Ni(OH) 2 generates electron-deficient Pd sites that weaken NH 3 BH 3 adsorption (ΔE ads = −0.92 eV) while enabling bifunctional catalysis: Pd activates B H bonds and Ni(OH) 2 -derived interfacial hydroxyls drive B O formation. Pd-INE demonstrates superior ammonia borane oxidation activity versus conventional polymer-bound Pd/NF while achieving a record peak power density of 724.1 mW cm −2 at 80 °C in DABFC operation, 2.3 times higher than both Pd/NF (321.2 mW cm −2 ) and prior benchmarks (315 mW cm −2 ). This enhancement stems from vertical nanosheets enhancing mass/charge transport and DFT-validated electronic interactions optimizing intermediate adsorption energies. The anode exhibits exceptional durability with 35 μV h −1 voltage decay over 40 h, outperforming polymer-bound anodes by 150-fold. This work establishes an ionomer-free anode paradigm resolving activity-durability trade-offs in direct liquid fuel cells through atomically tailored bifunctional interfaces.
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INTERNATIONAL JOURNAL OF ANTIMICROBIAL AGENTS
·
2024
·Vol. 64
·期 2
·107225
·
IF 4.9
Yali Zhang,Mengyue Liu,Jiangfeng Zhang,Jie Wu,Lijuan Hong,LiQiang Zhu,Jinzhao Long
bla NDM-1 and bla KPC-2 are responsible for the global increase in carbapenem-resistant Klebsiella pneumoniae , posing a great challenge to public health. However, the impact of phylogenetic factors on the dissemination of bla NDM-1 and bla KPC-2 is not yet fully understood . This study established a global dataset of 4051 bla NDM-1 + and 10,223 bla KPC-2 + K. pneumoniae genomes, and compared their transmission modes on a global scale. The results showed that bla NDM-1 + K. pneumoniae genomes exhibited a broader geographical distribution and higher sequence type (ST) richness than bla KPC-2 + genomes, indicating higher transmissibility of the bla NDM-1 gene. Furthermore, bla NDM-1 + genomes displayed significant differences in ST lineage, antibiotic resistance gene composition, virulence gene composition and genetic environments compared with bla KPC-2 + genomes, suggesting distinct dissemination mechanisms. bla NDM-1 + genomes were predominantly associated with ST147 and ST16, whereas bla KPC-2 + genomes were mainly found in ST11 and ST258. Significantly different accessory genes were identified between bla NDM-1 + and bla KPC-2 + genomes. The preference for bla KPC-2 distribution across certain countries, ST lineages and genetic environments underscores vertical spread as the primary mechanism driving the expansion of bla KPC-2 . In contrast, bla NDM-1 + genomes did not display such a strong preference, confirming that the dissemination of bla NDM-1 mainly depends on horizontal gene transfer. Overall, this study demonstrates different phylogenetic drivers for the dissemination of bla NDM-1 and bla KPC-2 , providing new insights into their global transmission dynamics.
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JOURNAL OF SOLID STATE CHEMISTRY
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2020
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IF 2.726
Shaoxing Guo,Pengyun Chen,Limei Song,Ping Guo,Jianhua Gao
A new mixed-anion phosphate crystal Cs 2 Bi 2 Sr(P 2 O 7 )(PO 4 ) 2 was obtained by molten salt method. Single-crystal X-ray diffraction data demonstrated that the compound crystallizes in monoclinic space group P 2 1 /c (No.14) with unit cell parameters a = 17.708(10) Å, b = 9.156(5) Å and c = 9.221(5) Å, β = 90.160(8) °. The structure exhibits a novel three-dimensional network, which is made up of BiO 6 , BiO 5 , SrO 6 and CsO 11 polyhedra sharing the corners with PO 4 tetrahedra and P 2 O 7 diphosphate groups. The band gap was estimated by the combined density functional theory and experimental study. Photoluminescence property of Cs 2 Bi 2- x Sr(P 2 O 7 )(PO 4 ) 2 : x Eu 3+ showed the excellent thermal stability and high quantum efficiency .
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JOURNAL OF RARE EARTHS
·
2021
·Vol. 40
·期 11
·1691-1698
·
IF 3.712
Qingsong Hu,Zaifa Pan,Guijie Liang
White light-emitting diodes (WLEDs) fabricated by single-phase full color emitting phosphor are an emerging solution for health lighting. The crystallographic site occupation of activators in a proper host lattice is crucial for sophisticated design of such phosphor. Here, we report a high quality white light-emitting phosphor Ba 2 Ca(BO 3 ) 2 :Ce 3+ (K + ),Eu 2+ ,Mn 2+ with spectral distribution covering whole visible region. Blue light emission originates from Ce 3+ ions occupying preferentially Ba 2+ site by controlling synthesis conditions. Green and red lights are obtained from Eu 2+ occupying Ba 2+ (and Ca 2+ ) site and Mn 2+ occupying Ca 2+ site, respectively. In this triple-doped phosphor, strong red emission with a low concentration of Mn 2+ is realized by the efficient energy transfer from Ce 3+ and Eu 2+ to Mn 2+ . Furthermore, high quality white light is accomplished by properly tuning the relative doping amount of Ce 3+ (K + )/Eu 2+ /Mn 2+ based on efficient simultaneous energy transfer. The results indicate that Ba 2 Ca(BO 3 ) 2 :Ce 3+ (K + ),Eu 2+ ,Mn 2+ is a promising white light-emitting phosphor in WLEDs application.
研究领域:
材料科学
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无机化学
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发光材料
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固态照明
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能源材料
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CHEMICO-BIOLOGICAL INTERACTIONS
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2026
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IF 5.4
Chaochao Gong,Xiuzhi Zhang,Yu Zhang,Xishi Chen,Hao Lin,Ren-shan Ge,Youming Zhao
11β-Hydroxysteroid dehydrogenase type 2 (11β-HSD2), a key enzyme in glucocorticoid inactivation, is expressed in human and rat placentas and kidneys. However, the inhibitory effects of alkyl (C1-C20) pyridinium quaternary ammonium disinfectants (PYRs) on 11β-HSD2 remain unexplored. This study evaluated PYRs through inhibitory potency assays, mechanistic investigations, structure-activity relationship (SAR)/3D-QSAR modeling, and molecular docking using human and rat 11β-HSD2 enzymes. Human 11β-HSD2 inhibition by PYRs followed a distinct V-shaped trend: potency increased from C12 to C16 (IC 50 : C12 = 132.81 μM, C14 = 19.62 μM, C16 = 1.96 μM) but declined beyond C16 (C18 = 14.45 μM, C20 = 100.76 μM). Shorter-chain PYRs (C1-C8) were inactive at ≤100 μM. Rat 11β-HSD2 exhibited a similar inhibition pattern. SPR analysis revealed that C16 displayed the highest binding affinity ( KD = 1.98 μM) with human 11β-HSD2. Mechanistic analysis revealed mixed/noncompetitive inhibition, with PYRs binding both the free enzyme and enzyme-substrate complex. In BeWo cells, C12-C20 PYRs inhibited cortisol metabolism at 10-100 μM, whereas C16 was effective at ≥1 μM. Molecular docking indicated PYRs interact with the NAD + binding site in both species. SAR analysis identified lipophilicity, steric bulk, and flexibility as critical inhibitory determinants, with higher values enhancing potency. A 3D-QSAR pharmacophore model confirmed hydrophobic interactions as essential for inhibition. Notably, species-specific binding differences suggest caution when extrapolating rodent data to humans. These findings highlight the endocrine-disrupting potential of PYRs, demonstrating their structure- and species-dependent interference with cortisol metabolism, with implications for chemical safety assessment.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 2
·147
·
IF 2.8
Rong Fei,Li Lan,Lv Jiahui,Wang Ji
Di(2-ethylhexyl) phthalate (DEHP) is a widespread organic pollutant in aquatic environments, which possesses reproductive toxicity and endocrine-disrupting effects. Conventional detection methods often rely on bulky instrumentation, incur high costs, and require complex sample preparation, limiting their suitability for rapid or on-site analysis. Therefore, we developed a molecularly imprinted electrochemical electrode sensor using a hybrid platform of gold nanoparticles (AuNPs) and multi-walled carbon nanotubes (MWCNTs) for the sensitive and convenient detection of DEHP. The sensor was constructed by co-modifying a boron-doped diamond (BDD) electrode with MWCNTs and AuNPs, followed by the in situ electrochemical polymerization of a DEHP-specific molecularly imprinted polymer layer. The resulting electrode exhibited excellent electrochemical activity and selective molecular recognition. Electrochemical impedance spectroscopy and frequency response analysis were used to characterize charge transfer resistance and interfacial capacitance over a DEHP concentration range of 1–50 ppm. In addition, principal component analysis was applied to explore the relationship between interfacial electrical parameters and sensing behaviors. Validation with real samples confirmed the sensor’s capability to detect DEHP across varying concentrations. Therefore, the molecularly imprinted AuNPs/MWCNTs/BDD electrode sensor demonstrates high sensitivity, excellent selectivity, and operational simplicity, offering a promising strategy for the on-site monitoring of small-molecule environmental contaminants.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 2
·137
·
IF 2.8
Zhao Bin,Tuo Yangyang,Zhu Tong,Yang Xiaoheng,Yu Huixin,Zhang Yu,Xie Mubiao,Tu Qin,Yu Ruijin
A collection of oxyapatite-structured Ba 2 La 3 (SiO 4 ) 2 (PO 4 )O doped with varying amounts of Tb 3+ ions (denoted as BLSPO: x Tb 3+ ) was prepared via the high-temperature solid-state reaction. The study comprehensively explored the crystalline characteristics, photoluminescence behaviors, and potential applications in LED devices. The XRD results confirmed its phase purity. Photoluminescence and excitation spectra analyses revealed that the optimal excitation wavelength for BLSPO: x Tb 3+ phosphors is 378 nm. Under this excitation, four sharp emission peaks were observed at 491 nm ( 5 D 4 → 7 F 6 ), 546 nm ( 5 D 4 → 7 F 5 ), 591 nm ( 5 D 4 → 7 F 4 ), and 626 nm ( 5 D 4 → 7 F 3 ). The best luminescent performance was achieved when the Tb 3+ ion doping concentration was 10 mol%. The concentration quenching mechanism can be effectively explained by dipole–dipole interactions. Additionally, the thermal stability of two samples, BLSPO:10 mol%Tb 3+ and BLSPO:20 mol%Tb 3+ , was tested. The results indicated an anomalous thermal quenching behavior, where the luminescence intensity increased with temperature rather than decreased. Specifically, the luminescence intensity of the BLSPO:10 mol%Tb 3+ sample increased to 112% of its initial value at 480 K, while that of the BLSPO:20 mol%Tb 3+ sample reached 111% at the same temperature, demonstrating exceptional thermal stability. When BLSPO:10 mol% Tb 3+ samples were used to fabricate green and white LEDs, their CIE chromaticity coordinates were (0.369, 0.512) and (0.323, 0.342), respectively, falling within the green and white regions of the chromaticity diagram. This demonstrates the material’s broad application prospects in LED lighting and display technologies.
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Journal of Materials Chemistry A
·
2026
·
IF 9.5
Huiqi Zhang,Ying Chang,Shaohong Guo,Yaqiong Su,Jingchun Jia,Meilin Jia
Precious metals play an indispensable role in the ongoing development of fuel cells. Controlling the amount of nobel metal added while enhancing catalytic activity and durability is of critical importance. Here, we had successfully proposed a method that utilized the synergistic effects of Pt-based nanoparticles and CeNC to enhance ORR performance. Due to the presence of CeNC, the dispersion of Pt-based nanoparticles was improved, and enabled the particle size to be reduced (2-3 nm). The prepared Pt 2 Ce alloy nanoparticles exhibited an icosahedral structure. The Pt 2 Ce/CeNC-600 exhibited excellent performance in acidic electrolyte, with a halfwave potential (E 1/2 ) measured at 0.81 V. When Pt 2 Ce/CeNC-600 was applied to zincair batteries (ZABs), it could achieve a power density of 184 mW cm -2 during discharge.Theoretical calculations showed that electrons transfer from CeNC to Pt 2 Ce in Pt 2 Ce/CeNC-600, indicating the existence of electron interactions and superior charge transfer ability. In addition, the energy barrier overcome in the O 2 *→OOH* reaction was reduced because of the coexistence of Pt 2 Ce and CeNC, making it easier for the reactants to reach the transition state and significantly accelerating the reaction rate. This research provided a clear path for structural control of advanced electrochemical materials.
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GREEN CHEMISTRY
·
2026
·
IF 9.2
Yujie Yuan,Ziyu Yang,Hao Wang,Tong Wu,Xiaoyi Zhang,Lin Chen,Zhaohuan Wei,Rui Wang,C. Venkata Reddy,Jaesool Shim,Hui Tang
Electrocatalytic seawater splitting holds immense promise as a green hydrogen production technology; however, the anodic oxygen evolution reaction (OER) confronts formidable challenges arising from the high concentration of chloride ions (Cl -) and other impurities in seawater. Herein, we develop a facile two-step immersion corrosion strategy to successfully construct a Ni 3 S 2 @FeOOH heterojunction electrocatalyst on nickel foam (NF) tailored for industrial alkaline seawater oxidation. Integrating density functional theory (DFT) calculations and experimental characterizations, we demonstrate that Ni 3 S 2 @FeOOH selectively enriches OH -while repelling Cl -during OER in alkaline seawater electrolytes. Notably, in situ leaching of SO 4 2-from the electrode triggers efficient self-reconstruction, facilitating the generation of high-valence metal active sites. The asfabricated catalyst exhibits remarkable OER performance with a low overpotential of 390.5 mV at an ultrahigh current density of 1000 mA cm -2 in alkaline seawater. Moreover, it maintains exceptional electrochemical stability for over 1000 hours at the industrial current density of 1000 mA cm -2 . This work provides a scalable strategy for constructing self-reconstructing electrocatalysts that promote highvalence metal site formation and efficient Cl -repulsion in alkaline seawater oxidation.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Tingyang Ming,Miao Hu,Wei Zhu
Non-equilibrium adsorption contributes to post-illumination TC removal. • Bi 2 WO 6 /Ni(OH) 2 shows enhanced adsorption and photocatalytic kinetics. • Charge storage is unlikely to dominate the dark-stage behavior. • Acid extraction reveals adsorption-related surface retention of TC. • Light-off timing supports adsorption relaxation after photocatalysis. The photocatalytic removal of antibiotic pollutants has been widely investigated for water purification, where continued pollutant decay after light irradiation (“dark-stage removal”) represents an intriguing post-illumination phenomenon in photocatalytic systems. Although charge storage provides an important explanation for post-illumination activity, adsorption relaxation after light-off may also contribute to dark-stage removal. In this work, a Ni(OH) 2 -modified Bi 2 WO 6 system was employed as a representative model to investigate non-equilibrium adsorption in photocatalytic dark-stage tetracycline removal. The photocatalytic performance under visible light was first evaluated to establish a high-activity reaction system. Subsequently, a combination of acid extraction, solution–surface distribution analysis, and charge probing experiments was used to clarify the contributions of adsorption redistribution and charge storage. The results demonstrate that charge storage is negligible and unlikely to dominate the dark-stage behavior in the Bi 2 WO 6 /Ni(OH) 2 system. Instead, the apparent dark-stage removal is primarily governed by a non-equilibrium adsorption process, arising from the imbalance between rapid photocatalytic consumption and adsorption–desorption dynamics during illumination. After light-off, the system gradually relaxes toward equilibrium, leading to continued redistribution of tetracycline from the solution to the catalyst surface. This work reveals a photocatalysis-induced non-equilibrium adsorption pathway for dark-stage removal, providing a complementary perspective for understanding post-illumination behavior in photocatalytic systems. Download: Download high-res image (181KB) Download: Download full-size image
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