Small
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2026
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IF 12.1
Yu Liu,Yi Xin,Teng Zhang,Yunlong Li,Junhong Jian,Shoufu Cao,Jian Luan,Xiaosa Zhang,Wenze Li,Wei Qi
Tailoring bimetallic synergy in azo-functionalized porous organic polymers for enhanced electrocatalytic CO 2 reduction porous organic polymers (POPs) have emerged as promising candidates for electrocatalytic applications due to their structural tunability and high surface areas. In this study, we report a coordination-driven assembly strategy to construct a Cu/Co bimetallic azo-phenolic polymer (denoted as Cu@Azo-CoPG) through chelation of azo-phenolic motifs with Cu 2 + ions. Systematic evaluation reveals that the bimetallic Cu@Azo-CoPG outperforms its monometallic counterparts (Cu-PG and Co-PG) in CO 2 reduction reaction (CO 2 RR), achieving a remarkable CO Faraday efficiency (FE CO ) of 94.3%. First-principles calculations elucidate that the Cu─Co dual sites synergistically modulate reaction energetics: the Co center lowers the energy barrier for * COOH intermediate formation, while adjacent Cu sites facilitate CO desorption. This work establishes a design paradigm where the electronic interplay between heterometallic sites in POPs enhances both CO 2 adsorption/activation and product desorption kinetics, offering new insights into the rational engineering of dual-active-site catalysts for sustainable energy conversion.
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PubMed
高影响因子
CHEMICAL PHYSICS
·
2026
·
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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高影响因子
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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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
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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高影响因子
Environmental Science-Nano
·
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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高影响因子
TALANTA
·
2026
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IF 6.1
Tai Ye,Shuying Yue,Long Bai,Haohao Chen,Chenyang Li,Rehemutula Wubuli,Kehua Dang,Min Yuan,Hui Cao,Ziqing Ye,Fei Xu
Co-immobilization of horseradish peroxidase (HRP) with G-quadruplex/hemin complex often suffer from low efficiency, intricate procedures, and reduced catalytic performance. To address these challenges, we developed a biomineralization strategy that integrates HRP and G-quadruplex/hemin into the single nanosheet structure. By engineering a split aptamer sequence into a G-rich domain, the nanosheets synergistically combine enhanced catalytic activity with better target-specific molecular recognition. Compared with either free HRP or it biomineralized counterpart alone, the prepared nanosheets exhibited markedly improved peroxidase-like activity. In the presence of enrofloxacin, specific aptamer-target binding facilitated the formation of a ternary complex on the electrode surface, enabling the catalysis of H 2 O 2 -mediated oxidation of TMB. Under the optimized conditions, the electrochemical aptasensor displayed a wide linear detection range of 1 nM–10 μM with a low detection limit of 0.53 nM. Beyond high selectivity, the sensor demonstrated excellent practical applicability in spiked milk and egg white samples. The generality of the developed platform was further confirmed by its successful extension to other antibiotics detection through replacing the split-aptamer pairs.
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DOI
PubMed
高影响因子
Nanoscale
·
2026
·
IF 5.1
Qi Chen,Yanming Li,Hui Shi,Wenbin Ma,Chunzhen Yang,Changli Li,Jingfu He
Multi-carbon (C2+ ) products from electrocatalytic CO2 reduction (CO2 RR) hold significant industrial value. Tandem Cu-based catalytic systems can markedly improve C2+ selectivity, but their performance is often limited by suboptimal spatial configurations. In this study, we fabricate layer-stacked Ag/CuO and array-patterned Ag/CuO catalysts with tunable array spacings (200, 400, and 800 μm) to decouple CO generation and consumption, thereby enabling precise regulation of * CO flux. The array-patterned Ag/CuO systems markedly outperform layer-stacked designs, indicating that lateral CO diffusion is more effective than longitudinal diffusion.Moreover, C 2+ selectivity strongly depends on array spacing, with the best performance achieved at 400 μm (Ag-CuO-400), reaching a Faradaic efficiency (FE) of 63% for ethylene at 300 mA/cm 2 in a neutral electrolyte. Through operando infrared microscopy, we visualize the * CO coverage distribution in real time, revealing an effective lateral CO diffusion length of approximately 200 μm. This corresponds to an optimal balance between * CO supply and C-C coupling activity on the Ag-CuO-400 catalyst. This work underscores the significance of anisotropic * CO transport and provides a design strategy for spatially structured tandem catalysts.
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DOI
PubMed
高影响因子
ACS Catalysis
·
2026
·
IF 13.1
Can Cheng,Yaolin Wang,Jia-nan Wang,Haomiao Xu,Wenjun Huang,Zhisong Liu,Wei Li,Yuyang Li,Zan Qu,Xin Tu,Naiqiang Yan
Plasma-catalytic CO2 hydrogenation to CO offers a promising route for carbon-neutral chemical synthesis. However, its advancement is constrained by low energy efficiency and limited mechanistic insight. Here, we developed an oxygen vacancy-engineered Pd-WO3–x catalyst supported on nickel foam (NF), which exhibits enhanced performance in ambient plasma-driven CO2 conversion. The system leverages the conductive properties of NF to spatially divide the discharge zone into streamer and filamentary discharge zones, thereby enhancing plasma activation and interfacial charge transfer. Catalyst characterization reveals that Pd plays a critical role in stabilizing metastable oxygen vacancies (OVs) within WO3–x, which function as electron reservoirs to promote CO2 dissociation into CO. Density functional theory calculations and in situ spectroscopic studies confirm that Pd facilitates H2 dissociation, while vibrationally excited CO2 generated in the plasma gas phase preferentially adsorbs at OV sites. At a specific energy input of 33.6 kJ L–1, the system demonstrates superior performance, achieving 54.9% CO2 conversion with 99.8% selectivity toward CO, surpassing typical plasma-catalytic benchmarks. The catalyst exhibited good stability over 100 h of continuous operation, with a slight decrease in CO2 conversion (<10%) and nearly unchanged CO selectivity (>99%) due to strong metal–support interactions and the conductive nature of NF. This work demonstrates that OV engineering provides a promising strategy for designing efficient plasma-catalytic systems for CO2 conversion.
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PubMed
高影响因子
ENERGY
·
2018
·
IF 4.968
Yi Zhang,Xihui Kang,Zhongming Wang,Xiaoying Kong,Lianhua Li,Yongming Sun,Shunni Zhu,Siran Feng,Xinjian Luo,Pengmei Lv
Microalgae have been considered as one of the most promising biomass resources for the generation of biodiesel , whereas algal residues (AR) after lipid extraction need to be utilized to enhance its economy and sustainability. This study proposed an integrated biochemical method for microalgae Chlorella sp. processing to achieve a high energy yield (12.33 KJ g −1 VS). The microalgae were first pretreated with mixed enzymes for lipid extraction. After that, the AR obtained from the lipid extraction of microalgae was co-digested with energy grass (GR) Pennisetum hybrid for methane production. Results indicated that the lipid yield from microalgae was enhanced by 54.45% with mixed enzymes pretreatment of cellulase , xynalase and pectinase compared to that without enzymatic pretreatment. The maximal methane yield (207.35 ± 15.66 mLCH 4 g −1 VS) of AR and GR co-digestion was obtained with the AR and GR VS ratio at 1:3. Energy yields evaluation based on the biodiesel and methane yields indicated that the energy yield for this two-step combined method was 169% higher than that for biodiesel alone. Thus, the proposed integrated approach was verified to be applicable for microalgae processing for energy production.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Zhiping Zhang,Xinmiao Xi,Yongjie Wang,Hongfei Liu
At room temperature , monoclinic In 2 W 3 O 12 ceramics exhibits positive thermal expansion. However, it transforms into an orthorhombic phase above 253 ℃, and then stably exhibits negative thermal expansion (NTE). In this work, to improve the NTE performance and extend the NTE temperature range of In 2 W 3 O 12 , the K x Mn x In 2-x W 3 O 12 (0≤x≤0.5) ceramics were synthesized via the solid-state reaction method. The effects of (KMn) 3+ double cation co-doping on the composition , microstructure, and thermal expansion behaviors of In 2 W 3 O 12 ceramics were studied using XRD , Raman, XPS, SEM, and TMA. The results show that (KMn) 3+ cations can replace In 3+ in In 2 W 3 O 12 ceramics. As the (KMn) 3+ doping amount increases, monoclinic In 2 W 3 O 12 gradually changed into monoclinic K x Mn x In 2-x W 3 O 12 . Meanwhile, the grains grow up and the density of K x Mn x In 2-x W 3 O 12 ceramics was increased. Pure monoclinic K x Mn x In 2-x W 3 O 12 ceramics were prepared when x rises to 0.25 and 0.4. Among them, the thermal expansion coefficient of K 0.4 Mn 0.4 In 1.6 W 3 O 12 ceramics in 100–700 ℃ is as high as -17.83×10 -6 ℃ -1 , which was significantly improved compared to In 2 W 3 O 12 ceramics. In addition, the structural phase transition of In 2 W 3 O 12 ceramics around 253 ℃ was gradually eliminated and the NTE temperature range was widened. Double cation (KMn) 3+ co-doping effectively improves the NTE performance of In 2 W 3 O 12 .
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DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2023
·
IF 4.1
Kang Cheng,Xinyue Liu,Weichao Huang,Xinyong Gong,Chaoyong Deng
Cr 3+ is an ideal activator for near-infrared phosphor. Cr 3+ ions have an electronic structure in which the outermost shell is not fully filled, which makes the emission of Cr 3+ susceptible to the crystal field environment and the change of local structural. Therefore, when Zn 2+ -Ti 4+ ion pairs are replaced with Al 3+ -Al 3+ /Ga 3+ -Ga 3+ ion pairs , changes in the crystal structure and the crystal field are strengthened, which improves the luminescence performances of Zn 2 TiO 4 :Cr 3+ phosphors. The thermal stability and the intensity of the luminescence can be clearly seen to have increased.
研究领域:
材料科学
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无机化学
·
发光材料
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固体物理
·
功能材料
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DOI
高影响因子
CHEMOSPHERE
·
2018
·
IF 4.427
Xianqiang Yin,Yanji Jiang,Yuehui Tan,Xiangmin Meng,Huimin Sun,Nong Wang
The ability to predict the transport of heavy metal ions in porous media with different surface characteristics is crucial to protect groundwater quality and public health. In this study, the effects of graphene oxide (GO) on co-transport and remobilization of Pb 2+ and Cd 2+ in humic acid (HA), smectite , kaolinite , and ferrihydrite-coated sand media were evaluated via laboratory packed-column experiments. Scanning electron microscope and energy dispersive X-ray analysis showed that the surface morphology of the coated sands was quite different and that ∼56.7–89.9% of the surface was covered by the coating and the major elemental components were C, O, Si, Al, and Fe. GO exhibited high mobility in HA, kaolinite , and smectite-coated sand, but showed high retention in ferrihydrite-coated sand. While GO reduced the transport of Pb 2+ and Cd 2+ , both metal ions also reduced the mobility of GO in coated-sand columns. Elution experiments revealed that GO led to the remobilization and release of the previously sorbed Pb 2+ and Cd 2+ from the coated sand. However, GO could not release Pb 2+ and Cd 2+ from smectite-coated sand columns, probably because smectite has stronger adsorption affinity to the heavy metals than GO. Derjaguin-Landau-Verwey-Overbeek calculations were employed and explained the GO transport behavior in the columns well. Furthermore, the advection-dispersion-reaction equation simulated the cotransport of Pb 2+ and Cd 2+ with GO in the coated sand well. These results are expected to provide insight into the potential impact of coexisting nanomaterials with contaminants in vulnerable soil and groundwater systems.
研究领域:
环境地球化学
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土壤学
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水文地质学
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纳米毒理学
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环境污染与修复
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高影响因子
危险品化学品经营许可证（带存储）