ENERGY & FUELS
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2025
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IF 5.3
Fanghui Wang,Yitong Dou,Hong Zhu
To enhance the oxygen reduction reaction (ORR) performance of silver-based catalysts in anion-exchange membrane fuel cells (AEMFCs), a novel Co@Ag–AgCl core–shell-structured needle-like nanowire catalyst was synthesized via a polyol-solvothermal method using cetyltrimethylammonium chloride (CTAC) as a surfactant. The results showed that when the CTAC concentration was 5 times the critical micelle concentration, the needle-like nanowires had the best dispersibility, and the synergistic interaction between the Ag–AgCl composite shell and cobalt core significantly enhanced the catalytic performance. The Co@Ag–AgCl3/C catalyst demonstrated exceptional ORR activity with a half-wave potential of 0.753 V, a limiting current density of 4.580 mA cm–2, and an electron transfer number close to 4 (3.88). Remarkably, during 10,000 cycles of durability testing (0.3–1.0 V vs RHE), the half-wave potential of the catalyst only shifted negatively by 17 mV, demonstrating better stability than commercial Pt/C (with a negative shift of 18 mV). This work provides critical insights for developing cost-effective non-platinum catalysts in AEMFCs.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Wei Shan,Man Liang,Jianan Zan,Lin Liu,Lu Guo,Kwan San Hui,Min Luo,Fuming Chen
The sustainable recovery of valuable metals from spent lithium-ion batteries (LIBs) is crucial for a circular and environmentally friendly economy as the LIBs market expands. However, separating and recovering Ni 2+ and Co 2+ is challenging due to their similar physicochemical properties. This study presents a new approach to enhance Ni/Co separation by manipulating chloride coordination to impart opposite charges to the metal ions. By adjusting the Cl − concentration, Ni 2+ and Co 2+ are selectively complexed into [Ni(H 2 O) 5 Cl] + and [CoCl 4 ] 2− clusters, respectively. Coupling this coordination strategy with electrodialysis, we achieved a remarkable Ni 2+ /Co 2+ separation selectivity of up to 370.70. When applied to NCM or NCA battery leachate solutions, the separation selectivity remained high, reaching 90.60 and 109.42, respectively, despite variations in metal ion concentration ratios. This chloride coordination-assisted electrodialysis strategy offers a promising alternative for Ni/Co separation, a critical step in the hydrometallurgical recycling of LIBs
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ACS Catalysis
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2025
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IF 13.1
Yanxi Zhao,Danfeng Wu,Caiyan Long,Chengchao Liu,Yaozhen Liang,Shaorong Yang,Zhe Li,Yuhua Zhang,Xiaodong Yi,Jinlin Li,Haifeng Xiong
The size and composition of bimetallic nanoparticles (NPs) are crucial in heterogeneous catalysis owing to their vital role in controlling catalyst reactivity. However, controlling the nucleation of bimetallic NPs is a formidable challenge because the metals are prone to grow independently, forming phase-separated NPs. This study reports that support engineering can tailor the growth of NPs to form a uniformly dispersed bimetallic alloy, enhancing reactivity in catalysis. The surface of a TiN support was functionalized with O atoms to load Fe and Co NPs. For the TiN support calcined at 400 °C for 2 h (TiN–O-2), the obtained FeCo/TiN–O-2 catalyst presents the homogeneous structure of FeCo NP alloys (Co0.7Fe0.3) after treatment in H2, while other FeCo/TiN catalysts show separated Co and Fe phases. In CO hydrogenation, the FeCo/TiN–O-2 catalyst shows the highest CO conversion (77.3%), the highest C5+ selectivity (73.0%), and stability. Characterization results show that the Fe–Co-alloyed NPs (Co0.7Fe0.3) were the active sites over the FeCo/TiN–O-2 catalyst and possess a distinct ability to activate CO and C–C coupling, consistent with the results obtained from density functional theory calculations.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Xintong Li,Zhichuan Yang,Shenglong Li,Min Gao,Yu Liu
Although remarkable progress has been achieved in electrocatalytic water splitting, the design of highly efficient bifunctional catalysts remains a significant challenge, mainly because of the slow kinetics of the oxygen evolution reaction (OER) and the limited stability of non-precious metal catalysts. This work presents a novel heterojunction catalyst consisting of Co–MnO nanocubes anchored on nitrogen-doped graphitic carbon derived from carbonized Ganoderma lucidum mycelium (CGLM), synthesized via an ion-exchange-coupled pyrolysis strategy. The unique fibrous entanglement morphology of CGLM offers ideal anchoring sites for catalytic centers, while preserving its intrinsic three-dimensional porous architecture to establish a continuous conductive network. This structural enhances electron transport efficiency and promotes stable immobilization of Co–MnO nanocubes (Co–MnO -2 /CGLM). Extensive experimental and theoretical investigations demonstrate that the Co–MnO -2 heterogeneous interface induces charge redistribution, synergistically optimizes the hydrogen adsorption free energy (Δ G H = −0.15 eV), and reduces the OER energy barrier, with a rate-determining step of Δ G 4 = 1.69 eV. The catalyst demonstrates remarkable bifunctional activity in alkaline media, exhibiting overpotentials of 105 mV for hydrogen evolution reaction (HER) at 10 mA cm −2 and 250 mV for OER at 50 mA cm −2 . Notably, the assembled electrolytic cell (Co–MnO -2 /CGLM||Co–MnO -2 /CGLM) achieves a voltage of only 1.61 V (50 mA cm −2 ) in overall water-splitting tests and maintains excellent durability, with negligible change in current density during prolonged operation. This study highlights the synergistic effect of heterogeneous structure engineering combined with biomass-derived carbon substrates in reducing reaction barriers and facilitating charge transfer, offering novel perspectives on the design of cost-effective electrocatalysts for sustainable energy conversion.
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CHEMICAL PHYSICS
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2026
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IF 2.4
Renping Cao,Chunxi Lin,Jiaxin Lin,Ruirui Yang,Fangrui Cheng,Jingheng Nie,Xiaochun Li,Zhulei Lei
Cr 3+ doped luminescence materials have been investigated widely and their luminescence property improvements are becoming a research hotspot by the researchers. In this work, we study the broadband near-infrared emission improvement and synthesis of Cr 3+ doped perovskite (Li 1.6 Mg 1.6 Sn 2.8 O 8 :Cr 3+ ) via co-doped Bi 3+ ions. The crystal structure, morphology, and luminescence properties of samples are investigated, respectively. Photoluminescence (PL) spectra of Li 1.6 Mg 1.6 Sn 2.8 O 8 :R (R = Cr 3+ , Cr 3+ /Bi 3+ ) in the range of 650 - 1250 nm are observed with a broad PL band and ∼186 nm full width at half maximum due to the 4 T 2 ( 4 F) → 4 A 2 transition of Cr 3+ ion in weak crystal field. The spectral intensity of Li 1.6 Mg 1.6 Sn 2.8 O 8 :Cr 3+ can be enhanced ∼2.4 times because of the change of crystal field when the co-doped Bi 3+ ions is ∼4 mol%. The good luminous thermal stability of Li 1.6 Mg 1.6 Sn 2.8 O 8 :Cr 3+ , Bi 3+ is confirmed by using PL spectra under the temperature from 300 to 450 K. The concentration/thermal quenching and luminescence mechanisms of Li 1.6 Mg 1.6 Sn 2.8 O 8 :R (R = Cr 3+ , Cr 3+ /Bi 3+ ) are analyzed and explained. This paper content can provide help for the improving emission of Cr 3+ doped luminescence materials.
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JOURNAL OF POWER SOURCES
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2026
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IF 7.9
Li-Qian Cheng,Yi Gong,Jiangyun Ding,Jingye Pan,Kai Chen,Xuxia Hao,Yu Dai,Min Jiang,Xinyuan Xie,Fan Yang,Ruiping Liu
High-manganese-to-iron-ratio lithium manganese iron phosphate (LMFP) is a promising candidate for next-generation electric vehicle cathodes due to its high energy density, low cost, and safety. However, its poor cycling reversibility, especially at elevated temperatures, has limited its practical application, which is mainly due to the Jahn-Teller effect and Mn-ion dissolution. Ion doping is a commonly used modification method. Herein, in this work, a novel V/F co-doping and Mn 2+ capture membrane coated with CNT-doped hydroxyapatite (HAP-C) were employed to modify LMFP. The V/F co-doped LMFP showed enhanced structure stability during cycling tests compared to LMFP, and the capacity retention rate increased to 89.5 % after 300 cycles at 1C/1C. Meanwhile, the Mn 2+ -capturing separator further protected the anode stability by preventing the deposition of dissolved manganese ions. Due to these combined properties, the doped cathode battery using the HAP-C modified separator exhibited less manganese deposition on the anode. After 300 cycles at 1C/1C, 25 °C, the capacity retention rate further improved to 96.7 %, and after 300 cycles at 0.5C/0.5C, 45 °C, the capacity retention rate increased to 84.0 %, demonstrating outstanding cycling stability. This comprehensive strategy provides a basis for developing high-energy-density and long-cycle-life lithium-ion battery.
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CERAMICS INTERNATIONAL
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2026
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IF 5.6
Ruiling Chang,Zhonghua Yao,Hua Hao,Minghe Cao,Hanxing Liu
BaTiO 3 -based ceramics are widely used as dielectric materials in base metal electrode multilayer ceramic capacitors (BME-MLCCs), and enhancing their stability is of considerable importance. In this study, Mn 2+ and Y 3+ are co-doped into BaTiO 3 via a chemical method. The acceptor Mn 2+ suppresses carrier migration, while Y 3+ promotes the formation of defect associates that further impede carrier movement, leading to a synergistic enhancement in both reduction resistance and dielectric stability. The results demonstrate that the formation of a core-shell structure significantly enhances both the reduction resistance and the temperature stability of the ceramics. Appropriate co-doping of Mn 2+ and Y 3+ effectively reduces the grain size and increases the activation energy of grain boundaries, thereby improving the bias stability. Simultaneously, co-doping helps maintain a low oxygen vacancy concentration and promotes the formation of defect dipoles ( [ M n T i ″ · V O · · ] , [ 2 M n T i ′ · V O · · ] and Y B a · Y T i ′ ), which further synergistically enhances the bias stability. In particular, the BT-M2Y1 ceramic exhibits a high insulation resistivity of 1.63 × 10 11 Ω cm, indicating good reduction resistance. Its temperature stability meets the EIA X8R specification. Under a DC bias field of 2.0 V/μm, the ceramic shows a minimal variation in dielectric constant of only −0.61 %, demonstrating excellent DC bias stability. Moreover, the BT-M2Y1 ceramic maintains a relatively high dielectric constant (∼1550) and a low dielectric loss (∼0.0078) even with a fine grain size of 204 nm. This study provides an important experimental basis for developing highly stable dielectric materials for BME-MLCCs.
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Environmental Science-Nano
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2026
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IF 5.1
Wenjun Zhang,Yanshan Gao,Qiang Wang
In this work, WO3 was used as a support to prepare noble metal-based IrRu/WO3 catalysts for the CO selective catalytic reduction (CO-SCR) in oxygen-rich flue gas. The CO-SCR activity was promoted through the synergistic interaction between Ir and Ru, coupled with the tailored interface between oxygen-deficient WO3 and the bimetallic IrRu nanoclusters. XRD and TEM results confirmed the formation of well-dispersed Ir–Ru nanoparticles, as well as a reduction-induced transformation of WO3 to WO2.92. Various techniques, along with DFT calculations, were employed to investigate the synergistic roles of Ir and Ru, as well as the contribution of the WO3 support. The enhanced CO-SCR activity of IrRu/WO3 was attributed to the electronic synergy between Ir and Ru, which stabilized Ir0 and facilitated NO activation, and the oxygen vacancies in WO3 induced by the strong metal–support interaction (SMSI). These vacancies not only protected active metal sites but also generated reactive oxygen species that stabilize NOx as nitrates. This work addresses the gap in understanding WO3-supported IrRu bimetallic catalysts and provides new perspectives for designing efficient CO-SCR catalysts, setting the stage for further mechanistic and kinetic investigations.
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DRUG DELIVERY
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2019
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IF 3.829
Weiping Cui,Hanqing Zhao,Chen Wang,Yao Chen,Cong Luo,Shenwu Zhang,Bingjun Sun,Zhonggui He
Self-nanoemulsifying drug delivery system (SNEDDS) have been considered as a promising platform for oral delivery of many BCS (biopharmaceutics classification system) class IV drugs, such as docetaxel (DTX). However, oral chemotherapy with DTX is also restricted by its active P-glycoprotein (P-gp) efflux and hepatic first-pass metabolism. To address these challenges, we developed a novel SNEDDS co-loaded with DTX and cyclosporine A (CsA) to achieve effective inhibition of P-gp efflux and P450 enzyme metabolization, improving oral bioavailability of DTX. The SNEDDS showed uniform droplet size of about 30 nm. Additionally, the prepared SNEDDS exhibited a sequential drug release trend of CsA prior to DTX. The intestinal experiments confirmed that the membrane permeability of DTX was significantly increased in the whole intestinal tract, especially in the jejunum segment. Furthermore, the oral bioavailability of co-loaded SNEDDS was 9.2-fold and 3.4-fold higher than DTX solution and DTX SNEDDS, respectively. More importantly, it exhibited a remarkable antitumor efficacy with a reduced toxicity compared with intravenously administered DTX solution. In summary, DTX-CsA co-loaded SNEDDS is a promising platform to facilitate oral docetaxel-based chemotherapy.
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NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.5
Xianshu Zheng,Rui Piao,Xueqin Wang,Peng Qiao,Xin Guo,Meiru Zheng,Yanxiu Liu,Yuanyuan Wang,Hua Song,Yanguang Chen,Fuping Feng
In this study, TiO2 nanotubes were synthesized through anodic oxidation and subsequently coated with Ag and Cu2O nanoparticles via a two-step photochemical deposition process. The photocatalytic performance of the samples was further analyzed by the photocatalytic hydrogen evolution and photodegradation of Rhodamine B. The Ag/Cu2O/TiO2 nanotubes (4.34 at% of Ag and 0.13 at% of Cu) showed optimal photocatalytic performance. The nanocomposite catalyst delivered a photoinduced current density of 0.335 mA cm−2 and achieved 96.7% RhB degradation within 120 minutes of the reaction. The theoretical hydrogen production rate was 5.06 µmol cm−2 h−1, showing a 1.9-fold enhancement over that of pure TiO2. Electrochemical impedance spectroscopy and LSV tests further revealed that the Ag/Cu2O/TiO2 nanotubes exhibited improved charge transfer properties and hydrogen evolution activity. The performance is ascribed to the built-in p–n heterojunction between Cu2O and TiO2 that promotes carrier separation, further amplified by the intense local electromagnetic field generated through the LSPR effect of Ag, which collectively accelerates both photocatalytic degradation and hydrogen production rate over the Ag/Cu2O/TiO2 nanotubes. The methodology developed herein offers a practical guide for constructing novel multifunctional photocatalysts with controlled heterojunctions for diverse applications.
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Mineral Processing and Extractive Metallurgy Review
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2016
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IF 1.56
Zijian Su,Yuanbo Zhang,Bingbing Liu,Jun Chen,Guanghui Li,Tao Jiang
Calcite (CaCO3), one of the main impurities, has an uncertain effect on the volatilization behavior of tin oxide in the tin-bearing iron ore concentrates during the selective reduction volatilization process. In this study, natural calcite powders were added into the tin-bearing iron ore concentrates to investigate tin volatilization behavior affected by CaCO3 under different roasting temperature, CO content, and roasting time. In addition, the effect of CaCO3 on the phase transformation of SnO2 was determined using XRD, SEM-EDS combined with thermodynamics calculation. The results indicated that CaCO3 had a significantly adverse effect on the Sn volatilization ratio, because Ca2SnO4 was easily formed under CO-CO2 atmosphere. It was also found from the study that the generation of SnO(s) was the most critical intermediate for promoting the formation of Ca2SnO4.
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JOURNAL OF NON-CRYSTALLINE SOLIDS
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2017
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IF 2.124
X.L. Yang,W.C. Wang,Q.Y. Zhang
The influence of BaF 2 on the physical and spectroscopic properties of Cr 3+ /Ho 3+ co-doped germanate glass is investigated systematically by differential scanning calorimeter , excitation and emission spectra , as well as dynamic decay lifetime. The intense and broad absorption band of Cr 3+ provides a selective pump scheme for obtaining an efficient 2.0 μm emission of Ho 3+ , the OH − absorption coefficient, on the other hand, is decreased as low as 1.08 cm −1 , which both highly conducive to obtain an intense 2.0 μm emission of Ho 3+ . In addition, the crystal-field parameter D q / B of Cr 3+ -doped glasses is also calculated to study the influence of BaF 2 on the local environment of activators and sensitizers. Further theoretic calculation shows that the largest absorption and emission cross-sections of Ho 3+ near 2.0 μm are as high as 4.6 and 5.2 (× 10 −21 cm 2 ) in the 10 mol% BaF 2 modified Cr 3+ /Ho 3+ co-doped glass and the maximum energy transfer efficiency from Cr 3+ to Ho 3+ is about 42.5%. All results suggest that this BaF 2 modified Cr 3+ /Ho 3+ co-doped glass is very suitable for a high-efficient 2.0 μm fiber lasers with flexible pump sources.
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