JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2023
·Vol. 28
·期 7
·2413-2423
·
IF 2.5
Lu Chengwei,Yu Liyue,Zhou Xiaozheng,Gan Yongping,He Xinping,Huang Hui,Zhang Jun,Zhang Wenkui,Xia Xinhui,Xiao Zhen,Fang Ruyi,Xia Yang
Lithium sulfide (Li 2 S) is a promising alternative cathodic material for lithium–sulfur batteries, which can alleviate the volume expansion of sulfur‑based cathodes. As a fully lithiated cathode, Li 2 S can be paired with Li-free anodes, thereby increasing the selectivity of anodic materials. Nevertheless, Li 2 S cathode is hindered by its high cost, harsh preparation conditions, and inadequate conductivity, which impose limitations on its practical application. Hence, the crucial factor in enabling the practicality of Li 2 S cathode is the development of low-cost and facile synthetic methods to produce highly conductive Li 2 S material. Herein, a high‑conductivity Li 2 S@C/CNT composite cathode is prepared using low-cost Li 2 SO 4 as a lithium source through a facile spray drying technique combined with carbothermal reduction method. Benefiting from the high-speed three-dimensional pathway for electron transport provided by the in-situ formed botryoidal highly conductive network, the Li 2 S@C/CNT cathode exhibits ultrahigh initial discharge capacity (1028.5 mA h g − 1 @1 C), superior cycle stability (520.6 mA h g − 1 after 200 cycles), and remarkable rate capability (301.8 mA h g − 1 @5 C). This work not only presents a simple and feasible approach for the low-cost preparation of high‑performance Li 2 S cathode, but also proposes an innovative idea for advancing the development of high energy density lithium–sulfur batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Rong-Kun Liu,Jia Jia,Qian Sun,Hong Zhao,Jie-Xin Wang
Janus-microswimmers, as efficient self-propelled materials, have garnered considerable attention, particularly for their potential applications in nonagitated liquids, like natural aquatic systems. However, current microswimmers face challenges such as unconfined diffusion areas and small-scale production. Herein, we propose a scalable spray-drying-assisted strategy for the efficient production of Janus-microswimmers. The Janus structures are fabricated by the assembly of polystyrene microparticles and SiO2/polydopamine nanoparticles in the microdroplets, and the single-side propulsion microswimmers are subsequently obtained by loading MnO2. By catalyzing the decomposition of H2O2 to produce oxygen, the speed of these microswimmers is much faster than those of other reported continuous-motion microswimmers. Interestingly, the microswimmers are self-propelled and gather in the proximity of water surface, and the extent of the confined area is controllable. This range-confined motion, distinct from the traditional irregular motion, offers a novel perspective on the behavioral patterns of Janus-microswimmers. Furthermore, by in situ loading of Fe3O4 nanoparticles, the microswimmers can be sensitively induced and controlled in their movement direction by a magnetic field. As a proof-of-concept, by harnessing the hydrophobic components of the microswimmers, we successfully recover floating oil films in a simulated natural water body, offering a promising approach for the remediation of petroleum pollution in the environment.
研究领域:
材料科学
·
环境科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Nano Energy
·
2021
·
IF 17.881
Guijia Cui,Qingyu Dong,Zhuangzhou Wang,Xiao-Zhen Liao,Siqi Yuan,Meidan Jiang,Yanbin Shen,Hong Wang,Haiying Che,Yu-Shi He,Zi-Feng Ma
NASICON-type (Na super ionic conductor) Na 4 VMn(PO 4 ) 3 (NVMP) cathode material has attracted increasing attention due to its higher sodium de-/intercalation voltage, lower cost and greener resources compared with Na 3 V 2 (PO 4 ) 3 . However, the poor electronic conductivity limits the exploitation of its electrochemical performance. In this work, we achieved an ultrahigh rate capable and long cycle life NVMP/C-rGO composite using the simple and scalable spray-drying technique, in which low-fraction rGO nanosheets (2.14 wt%) highly dispersed and bridged the carbon shelled NVMP nanoparticles to form an effective electron conductive network. Benefiting from this favorable nano-architecture, the elaborately designed NVMP/C-rGO composite exhibited excellent performance as cathode in sodium ion batteries, delivering reversible capacities of 105.5 mA h g −1 at 1 C (1 C = 110 mA h g −1 ) and 102.6 mA h g −1 at 50 C with capacity retention of 90.6% (1 C) and 80.4% (50 C) over 500 cycles, respectively. This is the highest rate performance for Na 4 VMn(PO 4 ) 3 materials reported so far. This work provides a practicable tactic for fabricating advanced polyanion-type cathode materials which can be commercially scale up for sodium energy storage.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2017
·
IF 3.091
Yingchao Hu,Wenqiang Liu,Zijian Zhou,Yuandong Yang
Various synthesis methods, such as the combustion method, sol–gel method, impregnated suspension, precipitation, etc., have been previously proposed for the production of efficient Li4SiO4 sorbents. During these methods, the mixture of the precursors of Li and Si were usually dried through the oven, water bath, or oil bath, which are all energy-consuming and slow processes. To produce Li4SiO4 sorbents quickly and efficiently, the spray-drying technique was employed in this work. The spray-dried sorbents exhibited both excellent CO2 capture capacity and cyclic stability during the multiple cycles, indicating that the spray-drying method was effective for the preparation of efficient and durable Li4SiO4 sorbents for high-temperature CO2 removal. Especially, the sorbent using lithium tartrate as the Li source achieved a considerable first-cycle CO2 sorption capacity of ∼0.275 g of CO2/g of sorbent and still held the capacity of ∼0.248 at the 50th sorption/desorption cycle under the realistically low CO2 concentration of 15 vol %. The excellent performance of the sorbent was demonstrated to be attributed to the corresponding small crystallite size of Li4SiO4, high surface area, large pore volume, and rich porosity.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2019
·Vol. 33
·期 11
·e5230
·
IF 3.259
Xian Zhang,Chang Liu,Min Wang,Xiao Sun,Xiao Yu Sun,Ni Xian Qian,Rui Rao,Yong Qing Ma
Anatase titania (TiO 2 ) nanoparticles were synthesized via a self-developed ethanol vapor-thermal method at 240°C (T240) and 250°C (T250), i.e. at temperatures lower and higher, respectively, than the supercritical temperature (243.5°C, 7.0 MPa) of ethanol. Compared to T240, T250 exhibited a higher ratio of exposed (001) facets, oxygen vacancies, and concomitant TiO x . The specific surface area of T250 was 119.0 m 2 g −1 , smaller than that of T240 (144.2 m 2 g −1 ). During the degradation of methylene blue, T250 exhibited a high apparent rate constant ( K app ) of 14.5 × 10 −2 min −1 , which was 6.3 times larger than that for T240. Furthermore, compared to T240, T250 exhibited better performance toward degradation of phenol. Results of electron spin resonance spectroscopy and photoluminescence indicated that the photogenerated electron–hole pairs possessed higher separation efficiency for T250 than for T240. In summary, the excellent photocatalytic performance of T250 originates from the higher ratios of exposed (001) facets, oxygen vacancies or TiO x , C═O groups adsorbed at the surface of particles, and higher separation efficiency of photogenerated electron–hole pairs. By employing this self-developed vapor-thermal method, a variety of catalysts and their composites can be synthesized, which may exhibit novel morphological characteristics and properties as well as excellent photocatalytic performance.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yingjun Qiao,Yuxin Hu,Zhiqiang Qian,Meizhen Qu,Zhong Liu
The yolk-shell architecture offers a promising solution to the challenges of silicon (Si) anodes in lithium-ion batteries (LIBs), particularly in addressing the significant volume changes that occur during charge and discharge cycles. However, traditional construction methods often rely on sacrificial templates and acid or alkali etching, which limits industrial applicability. In this work, we successfully constructed a silicon/carbon (Si/C) composite with a multicore yolk-shell structure using scalable spray drying technology and in-situ growth of metal–organic frameworks (MOFs) at room temperature. By controlling the spray drying parameters and the size of the MOF, we achieved a controllable adjustment of cavity size and shell integrity without the need for sacrificial templates, facilitating large-scale preparation. Electrochemical characterization shows that the composites exhibit impressive performance, achieving a reversible specific capacity of 1,054.5 mAh g −1 after 100 cycles at 0.5 A g −1 , and retaining 734.8 mAh g −1 after 400 cycles at 1 A g −1 . Moreover, finite element analysis (FEA) revealed another reason why the yolk-shell structure improves the performance of Si anodes: the presence of cavities promotes ion diffusion processes. This study provides a new synthetic paradigm for preparing Si-C composite materials with yolk shell structure and offers new insights into the improvement mechanism of this structure.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Xin-Ran Shi,Sai-Nan Guo,Ruoxi Zhang,Biao Yang,Hua Zou,Jie-Xin Wang
Metal–organic frameworks (MOFs) have emerged as pivotal materials for the photocatalytic reduction of CO2 to CO due to their exceptionally high surface areas and abundant active sites. However, most of the currently reported MOFs are confined to micropores (<2 nm), which limits adsorption/desorption and substance transport during photocatalytic CO2 reduction reactions. Herein, hierarchically porous MOFs (HP-MOF-74) were synthesized based on the assembly of MOF-74-Ni nanoparticles with different particle sizes (21, 42, and 85 nm) using spray-drying technology. The simultaneous enhancement of CO2 adsorption performance and photoelectroactivity was achieved in HP-MOF-74 due to the additional mesoporous structure formed by the nanoparticle stacking. The HP-MOF-74 exhibits 1.14–1.38 times improvement in the CO2 adsorption capacity compared to the corresponding initial MOF-74 nanoparticles (N-MOF-74). Meanwhile, the hierarchical architecture enhances photon utilization through improved light reflections and accelerates electronic transmission via additional mesopore pathways. These synergistic advantages collectively contribute to a 1.2–2.1 times enhancement in the CO generation rates of HP-MOF-74 compared with N-MOF-74 counterparts. Particularly, HP-MOF-74–42 nm demonstrated the highest CO production rate of 6.65 μmol h–1, outperforming most reported MOF-based photocatalysts. The construction of hierarchically porous MOFs provides a new idea for the design of highly efficient CO2 reduction photocatalysts.
研究领域:
材料科学
·
环境科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2024
·Vol. 13
·期 16
·2483
·
IF 4.7
Guangjing Chen,Juyan Sun,Qinghua Dai,Meiwen Sun,Peng Hu
The selection of an optimal drying method is essential for extending the shelf life and enhancing the quality ofRosa sterilisfruits. This study investigated the effects of both innovative (microwave vacuum drying and infrared drying) and traditional (freeze-drying and hot air drying) techniques on the structural characteristics and bioactivities of polysaccharides fromR. sterilisfruits (RSPs). Four different RSPs were obtained from fruits dried using these methods. Results demonstrated that the structural characteristics and bioactivities of RSPs varied significantly with the drying method. Notable differences were observed in extraction yield, total sugar, uronic acid content, monosaccharide molar ratios, molecular weight distribution, particle size, thermal stability, and microstructures of RSPs. Despite these variations, the types of constituent monosaccharides and major glycosidic linkages remained consistent across all methods. Notably, RSPs obtained via microwave vacuum drying (RSPs-MVD) showed a higher uronic acid content and lower molecular weight, and exhibited stronger in vitro antioxidant, α-glucosidase inhibitory, and antiglycation activities. These findings suggest that microwave vacuum drying is an effective pre-drying technique for extracting RSPs, making them suitable as bioactive ingredients in functional foods and pharmaceuticals for managing diabetes mellitus and its complications.
研究领域:
食品科学
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植物化学
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生物活性物质研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2025
·
IF 5.7
Haowen Zhong,Zongyou Chen,Jiahao Huang,Xiao Yu,Chengyong Wang,Yue Zheng,Mengran Peng,Zhishan Yuan
High incidence and mortality rates of chronic wounds place a heavy burden on global healthcare systems. Achieving phased delivery of antimicrobial and regenerative drugs is crucial for promoting chronic wound healing. Herein, a microneedle (MN) patch with a biphasic release system was developed using a combination of solvent casting and spraying methods. Additionally, a copper/PDMS mold was introduced to address the issue of deformation in the chitosan material during drying on polydimethylsiloxane (PDMS). The MNs have a bilayer structure, with a hyaluronic acid (HA) coating loaded with doxycycline (DOX) for antibacterial action and a chitosan (CS) core loaded with vascular endothelial growth factor (VEGF) for promoting cell migration and proliferation. Notably, in vitro drug release studies showed that the coating drug was released by 98.8% within 10 hours, while the release of the core drug could be sustained for up to 70 hours. In vivo studies showed that chronic wounds on C57 mice treated with CS/HA-bilayer MNs achieved nearly complete healing by day 9. These wounds exhibited reduced inflammatory cell infiltration, increased epithelial tissue regeneration, and enhanced collagen deposition. This work integrates the staged management of bacterial infection and angiogenesis and offers promising prospects for enhancing chronic wound healing.
研究领域:
生物医学工程
·
药剂学
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2024
·
IF 6
Dongsheng Hu,Gaoji Yang,Xiaogang Liu,Yuyue Qin,Fujie Zhang,Zhiqing Sun,Xinle Wang
Drying is a crucial process in the production of tea. The effects of sun drying (SD), hot air drying (HAD), microwave drying (MD), vacuum drying (VD) and freeze drying (FD) on the color, taste, bioactive, and aroma of coffee pulp tea (CPT) were evaluated systematically. The results showed that FD could better retain the original color, total phenolics (4.75 mg/mL), trigonelline (0.31 mg/mL), chlorogenic acid (0.067 mg/mL), protocatechuic acid (0.81 mg/mL), and total soluble sugars (24.33 mg/mL) of CPT, but its drying time was longer (32.56 h), and the taste and flavor were the worst. HAD and SD displayed the highest loss rates of most bioactive components, exceeding 40%. In contrast, MD can better improve the quality of CPT, giving it a better color, superior retention of bioactive components, and the most attractive taste and aroma, and decrease the drying time by 66.1% and 96.5%, respectively. Overall, MD is a promising production method for obtaining high-value-added CPT products.
研究领域:
食品科学
·
农业工程
·
化学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Yao Li,Jingyi Han,Otu Phyllis Naa Yarley,Yujin Wang,Yang Wang,Ao Zhang,Xingyu Fan,Cunshan Zhou,Weiqiao Lv
Dried shiitake mushrooms offer rich nutritional value and unique sensory properties, prompting further investigation. The effects of different drying techniques (hot air drying (HAD), infrared hot air drying (IRHAD), pulsed vacuum drying (PVD), vacuum freeze drying (VFD), and natural drying (ND)) combined with enzymatic hydrolysis on the release of flavor compounds and nutrients from shiitake mushrooms were explored. The combination of HAD with cellulase hydrolysis yielded notably high levels of umami amino acids (5.4723 ± 0.1501 mg/g) and 5′-nucleotides (4.0536 ± 0.0062 mg/g), and superior volatile flavors. Combined with cellulase hydrolysis, IRHAD achieved the highest level of total sugars (6.57 ± 0.34 mg/mL), VFD resulted in the greatest soluble protein content (153.21 ± 0.23 μg/mL), PVD yielded the highest total phenolics content (93.20 ± 0.41 μg GAE/mL), and ND produced the maximum reducing sugar content (5.79 ± 0.13 mg/mL). This study addresses crucial gap in the post-drying processing of shiitake mushrooms, offering valuable insights for further product development of shiitake mushrooms.
研究领域:
食品科学
·
营养学
·
酶学
·
产后技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jialin Zhuang,Yechen Wang,Liping Lin,Jiaying Xiao,Jiahui Cai,Yingmo Hu,Qi An
Reactive oxygen species (ROS) as highly oxidative substances play significant roles in environmental matter cycling. Despite their high potential in environmental regulation, effective artificial ROS generation techniques are still in the primary stage. In this study, we propose an effective piezo-photocatalytic film for ROS generation in water flow and under light irradiation. The high ROS generation capability stem from the special suprathin and highly porous structure obtained using our developed spray-drying technique to prepare the composite film. During the spray process, optimized component of graphene oxide, TiO 2 nanoparticles, and Poly(vinylidene fluoride- co -hexafluoropropylene) (PVDF-HFP) polymer chains self-organized to effective piezoelectrically and photocatalytically active assemblies, and highly porous structures are formed during the drying process. Especial mechanical sensibility to deform is realized in response to external force as weak as 0.2 N. The enhanced piezoelectricity of the PVDF-HFP microdomain, the narrowed band gap, and the electron transfer across the interfacial heterojunction between graphene and TiO 2 all contribute to the especially high piezo-photocatalytic capabilities. Water flow can effectively trigger the piezoelectric field generation in the film, which remarkably boost extractable charge carriers generated upon light irradiation. 88.05 % degradation efficiency of Rhodamine B during 15 min and 95.2 % degradation efficiency of ciprofloxacin in 120 min are realized, along with bacteriostat capabilities. The application potential of the composite are demonstrated in dest-top laundry process and the treated stained water can be used to cultivate plant. We expect the strategy to develop into a novel form of cleaning technique.
研究领域:
环境科学
·
材料科学
·
纳米技术
·
催化
·
水处理
·
高分子科学
·
光化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）