ENERGY
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2018
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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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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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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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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2023
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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
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发光材料
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固体物理
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功能材料
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DOI
高影响因子
CHEMOSPHERE
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2018
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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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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
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IF 6.901
Wenli Pei,Xiaoyang Wang,Chunhong Liu,Dong Zhao,Chun Wu,Kai Wang,Qiang Wang
Hyperbranched transition metal phosphides (TMPs) nanocrystals are an interesting class of materials, which can be used as an efficient catalyst for hydrogen evolution reaction (HER). However, big challenge remains for the preparation of ternary hyperbranched TMPs, and relationship between their HER performances and the splitting degree is also not well understood. Here, hyperbranched Co-Ni-P nanocrystals with different splitting degrees were prepared via a novel strategy, and their alkaline HER performances were studied. During the synthesis process, hyperbranched Co 2 P nanocrystals were used as template, and Ni precursors were injected into the reaction solution at different holding stage. When the Ni precursor was injected earlier, the podgy particles with low splitting degree would be obtained. Conversely, delaying the injection of Ni precursor would lead to high splitting degree. The formation process of ternary phase was also studied. After Ni precursor was injected, a Co-Ni-P amorphous layer was formed on the surface of the Co 2 P particles, and then the Ni atoms diffused into the Co 2 P phase to form Co-Ni-P nanocrystals. Electrochemical performances tests show that the splitting degree has great impact on HER performances. The higher splitting degree usually leads to larger electrochemical surface area, and higher catalytic activity can be achieved. The sheaf-like Co-Ni-P nanocrystals demonstrate a small overpotential of 119 mV at current density of 10 mA cm −2 , and good durability over 23 h in 1 M KOH solution. We believe that this work can help understand the relationship between the HER performances of hyperbranched TMPs nanocrystals and their splitting degree, and provide a synthetic strategy for the preparation of highly efficient TMPs catalysts.
研究领域:
材料科学
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电化学
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纳米技术
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催化
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2021
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IF 4.094
Jingying Zhang,Yanchun Yang,Guonan Cui,H. Alata,Yiming Wang,Chengjun Zhu
Substitution of Zn 2+ ionic by Co 2+ ionic is known to suppress the cation disorder of Cu 2 ZnSn(S,Se) 4 thin films , which is helpful to obtain the excellent Cu 2 ZnSn(S,Se) 4 solar cell devices. In our work, the extra trace Co incorporation was added in the solution without affecting the compositions of other elements (i.e. Cu, Zn, and Sn) to enhance the electrical properties of Cu 2 ZnSn(S,Se) 4 thin films . And Co incorporation does not enter into the lattice nor be found in the selenized films after taking effect, but increases the crystallinity , compactness, carrier concentration, and electrical properties of Cu 2 ZnSn(S,Se) 4 thin films samples. By tuning the doping ratios of Co 2+ ionic, the surface roughness of the selenized films can be decreased from 110.2 nm (0 mol %) to 68.90 nm (5 mol %). As 1 mol % of Co 2+ ionic is doped, the carrier concentration of films can be also improved to 4.35 × 10 17 cm −3 from 2.63 × 10 16 cm −3 , and average surface current of films applied 1 V AC voltage can be increased from 2.426 nA to 4.454 nA. The enhanced properties of Co-incorporated films brings hope for the excellent performance of Cu 2 ZnSn(S,Se) 4 solar cells.
研究领域:
材料科学
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光伏技术
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半导体薄膜
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可再生能源
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DOI
高影响因子
TALANTA
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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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产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2026
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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
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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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产品关联
DOI
PubMed
高影响因子
ENERGY CONVERSION AND MANAGEMENT
·
2026
·
IF 10.9
Shiying Yang,Fan Jiao,Xiaotong Fan,Lixinyu Mei,Xiaojing Shi,Qibin Liu
Methane carbon cyclic reforming (MCCR) represents a novel dry methane reforming (DMR) reaction, offering advantages in terms of greenhouse gas utilization and automatic product separation. This study dedicated to exploring the potential of the MCCR method for continuous and long-term production of H 2 and CO fuels. Using a self-synthesized Ni/Al 2 O 3 catalyst, we elucidated at the microscopic level the advantages of directional conversion of carbon and hydrogen elements during the MCCR process, as well as its underlying mechanism. Through in-situ testing and microscopic characterization, it was confirmed that the decoupling of the MCCR reaction can suppress side reactions, and prevent excessive graphitization of carbon deposits and promote their removal by switching reaction mechanisms promptly. The long-term continuous fuel production experiment was conducted at the macroscopic level for validating these findings. The catalyst’s stability was confirmed by 2750 min of continuous TGA cycling tests, maintaining a carbon removal ratio of 99.99% after 250 cycles. This performance was further validated in a fixed-bed reactor, where an average H-C ratio of 1.13 was sustained over 40 cycles during a 20-hour long-term test. This research paves the way for the advancement of MCCR technology and complements conventional DMR methods for the production of clean fuel.
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LWT-FOOD SCIENCE AND TECHNOLOGY
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2026
·
IF 6.6
Siyuan Chu,Lijia Chen,Wenjie Zhang,Huaiyue Sun,Xiaoyu Du,Zhengquan Wang,Xichang Wang,Jian Zhong
Nutrients co-encapsulation is a significant research focus in functional foods. This study developed a method to co-encapsulate fish oil and curcumin (Cur) using bovine bone gelatin (BBG)-chitosan (CS) complex coacervation, followed by freeze-drying with maltodextrin (MD) as a drying aid. The results confirmed that the successful encapsulation of fish oil/Cur droplets in the powder particles. As the MD/BBG mass ratios increased (0–8), several trends were observed for the powders: the oil loading capacity decreased progressively (17.7%–2.7%), oil encapsulation yields increased and then decreased (54.1%–27.9%), oil encapsulation efficiencies exponentially increased (75.6%–92.9%), Cur loading capacities exponentially decreased (0.82%–0.24%), Cur encapsulation yields exponentially increased (63.7%–85.9%), Cur encapsulation efficiencies linearly decreased (79.8%–73.4%), and peroxide values during the oxidative stability process logistically increased (19.5–44.5 mmol/kg oil at 1 h). During simulated small intestinal digestion, an MD/BBG mass ratio of 5 resulted in the highest percentage (92.8%) among all ratios tested (0–8). These results suggested fish oil can act as an effective carrier for Cur in functional powders, and that miscible nutrients can be co-encapsulated within complex coacervates. This work provided an efficient strategy for developing raw materials with co-encapsulated nutrients for functional foods and contributed to understanding the underlying mechanism of the multi-nutrient co-encapsulation.
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CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Dongxu Wang,Miao Pan,Wen-Jie Chen,Zhibin Cheng,Xiaoyang Pan
Novel CaCu 3- x Zn x Ti 3.95 Zr 0.05 O 12 (CCZTZO, x = 0.025 - 0.1) ceramics were synthesized via a sol-gel route to optimize the intrinsic dielectric limitations of CaCu 3 Ti 4 O 12 (CCTO). Systematic investigation of Zn 2+ and Zr 4+ co-doping effects and annealing temperature variations (900 - 1050 °C) on microstructure and dielectric characteristics revealed: XRD analysis confirmed phase-pure CCZTZO crystallization with complete elimination of secondary phases after organic binder removal via re-sintering at 1000 °C. SEM and XPS characterizations validated successful dopant incorporation, demonstrating a monotonic reduction in grain size with increasing Zn 2+ content. Impedance spectroscopy revealed enhanced electrical resistance and substantially reduced dielectric loss tangent (tanδ) while maintaining high dielectric constants (ε′). Optimal performance was achieved in CaCu 2.9 Zn 0.1 Ti 3.95 Zr 0.05 O 12 (CCZTZO-4), exhibiting an low tanδ of 0.002 with high ε′ ≈ 1.27 × 10 3 . Furthermore, excellent frequency stability was observed across 10 2 Hz - 10 5 Hz, with ε′ maintained at ∼10 3 and tanδ consistently between 0.002 - 0.054. Temperature-dependent measurements revealed outstanding thermal stability with a relative permittivity coefficient Δε′/ε′ 25°C ≤ ±10 % over − 60 °C to 120 °C. Analysis of electrical modulus and impedance spectra indicated modified activation energies for both bulk and grain boundary responses, demonstrating that Zn 2+ and Zr 4+ co-doping effectively enhances the interfacial polarization mechanism in CCTO-based ceramics.
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高影响因子
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