RSC Advances
·
2021
·Vol. 11
·期 35
·21235-21247
·
IF 3.361
Guang Xiong,Feifei Meng,Jiaxu Liu,Liping Liu,Leping Zhao
An innovative hydrothermal method has been successfully applied to the synthesis of hierarchical ZSM-5/beta composite zeolites with different mass ratios. Firstly, the ZSM-5 zeolites were coated with amorphous silica and aluminum species by a spray drying process. Then, the precursor powder was hydrothermally crystallized for only 1–2 days with the addition of tetraethyl ammonium hydroxide (TEAOH). The obtained products were characterized by XRD, SEM, TEM, N2 physical adsorption–desorption, 27Al MAS NMR, ICP, pyridine-IR and NH3-TPD techniques. The characterization results imply that the ZSM-5/beta composite zeolites exhibit hierarchical-pores, higher external surface areas and larger mesopore volumes as compared to those of the pure ZSM-5 and beta zeolite. Moreover, the pore structure and acid sites of the ZSM-5/beta composite can be adjusted by changing the mass ratio of ZSM-5/beta. Finally, the ZSM-5/beta composite catalysts exhibit good catalytic performances in the cracking of 1,3,5-triisopropylbenzene (1,3,5-TIPB).
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Chemistry
·
2023
·
IF 5.5
Sun Lixia,Hu Jiayan,Bai Weiqi,Mao Wutao,Song Zhongcheng
The hunt for a higher power storage, relatively inexpensive, non-polluting battery technology is currently a pressing issue because of the rapid growth of the worldwide economic and the progressively significant environmental pollution. Among the possible nanomaterials for rechargeable batteries that can have heteroatoms applied to it in order to improve its electrochemical behavior is LixTiy(PO4)3. Carbon-coated Mn-doped Li2Mn0.1Ti1.9(PO4)3 materials was synthesized by spray drying method. The material was characterized by XRD, SEM, TEM, BET, TGA et al. Crystal data refinement results by Rietveld method showed that the symmetry space group is Pbcn.The lattice parameters of Li2Mn0.1Ti1.9(PO4)3 are a = 11.9372 Å, b = 8.5409 Å, c = 8.5979 Å, α = β = γ = 90°, V = 876.59 Å3 and Z = 4). Rietveld refinement was performed, and the confidence factors are Rwp = 11.79%, Rp = 9.14%, and χ2 = 1.425. It was exhibited that LMTP0.1/CA-700 material has good crystallinity. Testing the cells with LAND test procedure (200 mA/g current density for 200 cycles), the LMTP0.1/CA-700 material has a discharge specific capacity of about 65 mAh/g. The capacity decayed by only 3% during the cycle. It has some potential application values as cathode of lithium ion battery in the future.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Ni Wang,Yan Wei,Miao Chang,Jingran Liu,Jie-Xin Wang
Hierarchically porous metal–organic frameworks (HP-MOFs) are promising in many applications. However, most previous studies focus on HP-MOFs with two kinds of pore structures. Herein, a strategy for efficient construction of HP-MOFs possessing macro-meso-micropores using template-assisted spray drying followed by etching process is proposed. Taking ZIF-8 as an example, using polystyrene (PS) templates, the complete HP-ZIF-8 with all the three categories of pores can be easily fabricated. The close arrangement of intrinsic microporous nanosized ZIF-8 (N-ZIF-8) in the spray drying process results in the creation of mesopores, while the macropores are further generated after the removal of PS templates. The structures of macropores and mesopores can be easily adjusted by altering the size and proportion of PS and the size of N-ZIF-8, respectively. Furthermore, this method is extended to the preparation of HP-HKUST-1. As a proof-of-concept, HP-ZIF-8 displays excellent catalytic properties in Knoevenagel reaction owing to its unique pore features. Compared with conventional microsized ZIF-8 (M-ZIF-8) with similar size, HP-ZIF-8 achieves the significantly increased conversion of benzaldehyde from 55% to 100% within 3 h, and shows better recycling performance than N-ZIF-8.
研究领域:
材料科学
·
化学工程
·
催化反应
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xiyue Zhang,Minjie Hou,Jianyong Zhang,Yingjie Zhou,Fupeng Li,Kun Ren,Xuantian Feng,Pengyu Dou,Sicheng Bi,Katsuro Hayashi,Lin Xu,Feng Liang
Alluaudite-type Na 2+2δ Fe 2- δ (SO 4 ) 3 , characterized by its cost-effectiveness and high operating voltage, has emerged as a prospective cathode material for sodium-ion batteries (SIBs). However, poor electronic conductivity and sluggish reaction kinetics hinder its practical application. In this study, we developed a low-strain spherical Na 2.5 Fe 1.75 (SO 4 ) 3 @C@KB (NFS@C@KB) cathode, enclosed within highly conductive Ketjen Black (KB) using a scalable spray-drying method. In-situ X-ray diffraction analysis revealed that the nearly zero-volume strain originates from the synergistic effect of the dense spherical configuration and pearl-like KB branched chains, effectively enhancing the structural stability and prolonging the cycle life. Moreover, the interconnected KB network establishes a continuous electron transport pathway, thereby improving the electronic conductivity. The optimized NFS@C@KB cathode delivered a capacity of 75 mAh g −1 at 5C and exhibited remarkable cycling stability over 4000 cycles. Even under the extreme condition of −20 °C, it retained a discharge capacity of 63 mAh g −1 at a rate of 1C. Consequently, the combination of a low-strain structure and outstanding electrochemical performance is expected to stimulate further exploration of iron-based sulfate cathodes and promote the development of rechargeable SIBs for energy storage applications.
研究领域:
储能技术
·
材料科学
·
电化学
·
无机化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2022
·
IF 5.062
Ping Song,Yuan Tian,Guizhou Hao,Lisa Xu,Yan Sun,Yong Sun
Ibrutinib is an anti-cancer drug, mainly used for treating B-cell malignancies. Because of its low water solubility and poor absorption in vivo , the bioavailability is extremely low, only 2.9%. In this study, a solid self-microemulsifying drug delivery system based on the lipid matrix was designed and prepared for ibrutinib. The composition of the self-microemulsion of ibrutinib includes oil phase Caprylic/Capric Triglyceride (Captex®335), surfactant Tween-80, and co-surfactant Diethylene glycol monoethyl ether (Transcutol HP). And the mesoporous silica SBA-15 was selected as an adsorbent to prepare solid powder preparations using the spray-drying method, which significantly improved its dispersibility and stability, and contributed to reducing the particle size and long-term preservation in gastric and intestinal fluids. The in vivo pharmacokinetic study of beagles showed that compared with commercial ibrutinib capsules , the relative oral bioavailability of ibrutinib capsules based on lipid matrix increased to 467.60%. In summary, the lipid-based solid preparation is a promising platform that can effectively improve the oral absorption of ibrutinib.
研究领域:
药剂学
·
肿瘤学
·
生物医学工程
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Bin Xiao,Wen-hai Zhang,Peng-bo Wang,Lin-bo Tang,Chang-sheng An,Zhen-jiang He,Hui Tong,Jun-chao Zheng,Bo Wang
Phosphate-based polyanion-structured materials have attracted considerable attention as anode materials in lithium-/sodium-ion batteries due to their stable crystal structure, affordability, and environmental friendliness. V 2 (PO 4 )O was encapsulated into crumpled nitrogen-doped graphene (VPO@N-G) through a facile spray-drying method in which VPO particles were completely encapsulated by N-doped graphene. For the first time, VPO@N-G was explored as an anode material for sodium-ion batteries. The Na + storage behavior of VPO@N-G was systematically investigated at the voltage range of 0.01–3.0 V (versus Na/Na + ). Results indicated that the VPO@N-G anode can deliver a highly reversible discharge capacity of 539 mAh g −1 at 0.05 A g −1 and achieve a highly reversible discharge capacity of 235.9 mAh g −1 even at a high current density of 10 A g −1 . Thus, VPO@N-G can be applied as a high-rate anode material for sodium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米复合材料
·
无机功能材料
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Hedong Chen,Zhoulu Wang,Xianhua Hou,Lijun Fu,Shaofeng Wang,Xiaoqiao Hu,Haiqing Qin,Yuping Wu,Qiang Ru,Xiang Liu,Shejun Hu
Carbon-coated core-shell structure artificial graphite@plasma nano-silicon@carbon (AG@PNSi@C) composite, applying as lithium ion battery anode material , has been prepared via spray drying method. The plasma nano-silicon (<100 nm), which contained amorphous silicon , was synthesized by radio frequency induction plasma system with the high temperatures processing capability and high quench rates. The artificial graphite in the composite acts as the core which supports the particle and provides electroconductivity , while PNSi attached on the surface of the core, enhances the specific capacity of the composite. The as prepared composite shows superior performance as anode in lithium-ion batteries, regarding to the initial Coulombic efficiency and cycle life. The initial Coulombic efficiency of AG@PNSi@C electrode is 81.0% with a discharge capacity of 553 mAh g −1 and a recharge capacity of 448 mAh g −1 . During cycling, AG@PNSi@C exhibits excellent performance with a very low capacity fading that the discharge capacity maintains 498.2 mAh g −1 and 449.4 mAh g −1 after 250 cycles and 500 cycles. AG@PNSi@C also shows enhanced resistance against high current density . Besides the remarkable electrochemical performances , the facile and mass-producible synthesis process makes the AG@PNSi@C composite very promising for its application in lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
Journal of Nanomaterials
·
2020
·
IF 1.98
Hongyan Sun,Xiaodong Li,Pengfei Wu,Changgui Song,Yue Yang
RDX/aluminum composites were prepared by the spray-drying method with F2602 as a binder. The morphology and covering effect of composites were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The effect of the processing parameters on the morphology of the samples was investigated. The impact sensitivity and thermal decomposition behavior of RDX/aluminum composites were also measured and analyzed. Optimal morphology of samples was achieved when the inlet temperature, nitrogen flow rate, and suspension feed flow rates were 80°C, 473 L·h-1, and 4.5 mL·min-1, respectively. In addition, RDX/aluminum composites with the same content were prepared by a coverage-mixing method for comparative analysis. Experimental results showed that the thermal sensitivity and the impact sensitivity of RDX/aluminum composites prepared by the spray-drying method were significantly lower than those of RDX/aluminum composites prepared by the coverage-mixing method.
研究领域:
材料科学
·
化学工程
·
爆炸技术
✓ 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）