INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
·
IF 3.9
Ying Zhang,Yue Wu,Tong Yan,Zhicheng Zhang,Wenxiang Zhang,Heping Ma
The development of efficient adsorbents for perfluorinated electronic specialty gases’ (F-gases) recovery presents significant challenges in the chip plasma etching process. In this study, we focus on preparing Ti- and W-replaced MFI zeolites, which offer abundant Lewis acid sites, to enhance the separation of F-gases toward N2. Through single-component gas adsorption and ideal adsorbed solution theory selectivity analyses, the Ti- and W-doped MFI zeolites demonstrate remarkable separation performance. Additionally, dynamic breakthrough experiments have confirmed the effective capture of F-gases using Ti- and W-doped MFI zeolites. The intrinsic adsorption mechanism was also investigated by the Grand Canonical Monte Carlo and independent gradient model (IGM) simulations. IGM results indicate that there is a strong charge transfer interaction between the polar Lewis acid sites in the MFI channel and F-gases with high polarizability. These results highlight the promising potential of MFI zeolites with abundant Lewis acid sites for addressing F-gas capture in the semiconductor industries.
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Scientific Reports
·
2022
·Vol. 12
·期 1
·1-8
·
IF 4.996
Wu Junsheng,Zhao Zhuo,Zhou Yanwen
Tin-based perovskite material is the best choice to replace heavy metal element lead during the last several years. Cs 2 SnI 6 with Sn 4+ is a fascinating optoelectronic material, which is a more air-stable composite cesium tin halide peroxide variant from CsSnI 3 . However, the optoelectronic performance between N and P type of Cs 2 SnI 6 varies considerably. Herein, we synthesized uniform Cs 2 SnI 6 by modified two-step method, which thermal evaporated CsI firstly, and followed annealing in the SnI 4 and I 2 vapor at 150 °C resulted in uniform Cs 2 SnI 6 films. SnF 4 is used as a dopant source to improve the optoelectronic properties of Cs 2 SnI 6 films. Results indicate that good crystallinity was obtained for all films and the doped films underwent a crystalline plane meritocracy transition. The doped films had a flat, non-porous morphology with large grains. The high transmittance of the doped films in the infrared region led to the avoidance of self-generated thermal decomposition. With the help of F − , the films became more conductive and had higher carrier mobility. DFT calculations showed that doping with F reduced the surface energy of (004), resulted in a preferred orientation transition in the crystal of Cs 2 SnI 6 . Fluorine doped double layer perovskite materials would have a broader application prospect.
研究领域:
材料科学
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物理化学
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CHEMISTRY & BIODIVERSITY
·
2024
·
IF 2.3
Yue Lu,Ming-Hua Duan,Xue Zhao,Yang Zhang,Yu Yang,Rui Xu,Ya-shuai Kang,Zi-Lin Wang,You-Zhi Zhang,Chang-Wei Li
Six previously unreported papulacandins, namely pestiorosins A–F (1–6), were isolated from the fermentation products of the fungus Pestalotiopsis rosea YNJ21 isolated from the fruitbody of Amanita exitialis. The structures of these compounds, along with a known compound called pestiocandin (7), were determined using MS, NMR data, and modified Mosher's method. All compounds exhibited significant antifungal activity against Candida albicans, with MIC values ranging from 0.06 to 2.00 μg/mL. In terms of cytotoxicity assays, compounds 3 and 6 demonstrated moderate inhibitory activity against human breast cancer MCF-7 cells with IC50 values of 24.50 and 16.83 μM, respectively. On the other hand, compound 7 displayed similar levels of inhibitory activity against mice microglial BV2 cells with an IC50 value of 24.51 μM.
研究领域:
微生物学
·
药物化学
·
天然产物研究
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高影响因子
Materials
·
2024
·Vol. 17
·期 6
·1417
·
IF 3.1
Chen Zheng,Xu Han,Fangfang Sun,Yue Zhang,Zihang Huang,Tianyi Ma
Aqueous supercapacitors have occupied a significant position among various types of stationary energy storage equipment, while their widespread application is hindered by the relatively low energy density. Herein, N/F co-doped carbon materials activated by manganese clusters (NCM) are constructed by the straightforward experimental routine. Benefiting from the elevated conductivity structure at the microscopic level, the optimized NCM-0.5 electrodes exhibited a remarkable specific capacitance of 653 F g−1at 0.4 A g−1and exceptional cycling stability (97.39% capacity retention even after 40,000 cycles at the scanning rate of 100 mV s−1) in a neutral 5 M LiCl electrolyte. Moreover, we assembled an asymmetric device pairing with a VOxanode (NCM-0.5//VOx), which delivered a durable life span of 95% capacity retention over 30,000 cycles and an impressive energy density of 77.9 Wh kg−1. This study provides inspiration for transition metal element doping engineering in high-energy storage equipment.
研究领域:
材料科学
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能源存储技术
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SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Jiwen Hu,TingTing Liu,Hong-Wen Gao,Senlin Lu,Kajsa Uvdal,Zhangjun Hu
By ingeniously using a (imino)coumarin-precursor, three reactive fluorogenic probes of MP , FP, and FMP have been fabricated in a single facile synthetic route. MP and FP are able to respectively act as selective “turn-on” fluorescent probes for detecting Hg 2+ and F − in buffer solution via specific analyte-induced reactions. Linear ranges for the detection of Hg 2+ and F − are 0–10 μM and 0–100 μM with the limits of detection (LODs) of 4.0 × 10 −8 M and 1.14 × 10 −6 M (3δ/slope), respectively. FMP is able to work as a molecular “AND” logic gate-based fluorogenic probe for monitoring the coexistence of Hg 2+ and F − via a multistep reaction cascade. The analytes-induced sensing mechanisms have been determined by using high-performance liquid chromatography analysis (HPLC). In addition, three probes show negligible toxicity under the experimental conditions, and are successfully used for monitoring Hg 2+ and F − in living cells with good cell permeability. The success of the work demonstrates that ingenious utility of specific analyte-induced reactions and conventional concepts on the appropriate molecular scaffold can definitely deliver tailor-made probes for various intended sensing purposes.
研究领域:
分析化学
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材料科学
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生物化学
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细胞生物学
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CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Jingjing Wu,Hongqiang Li,Xuejun Lai,Zhonghua Chen,Xingrong Zeng
Piezoresistive pressure sensors with high sensitivity, fast response, and simplified signal collection play an important role in a wide variety of fields. However, most of them are water-sensitive and easily attacked by water, leading to serious signal distortion in practical application. Herein, we fabricated a conductive and superhydrophobic 1H,1H,2H,2H-perfluorooctyltriethoxysilane (FAS) modified reduced graphene oxide@carbon nanotubes/chitosan (F-rGO@CNTs/CS) aerogel for piezoresistive pressure sensor. Benefiting from the porous structure of aerogel and the synergy of CNTs and rGO, the aerogel sensor achieved high sensitivity and fast response. Moreover, the sensor maintained a stable electrical resistance response after 1000 loading-unloading cycles. Importantly, owing to the rough structure constructed by CNTs and multi-pores and the low surface energy of FAS, the sensor possessed superhydrophobic property with a high water contact angle of 154°, and exhibited remarkable water repellency even during compression process. In addition, the sensor was successfully applied for detecting human behaviors from small-scale muscle movements to large-scale body motions. Our findings provide a new direction to fabricate functional and high-performance piezoresistive pressure sensor for various applications even under water or wet environment.
研究领域:
材料科学
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传感器技术
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生物医学工程
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SURFACE ENGINEERING
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2020
·
IF 2.433
Bo Yang,Mingze Xu,Tingsong Zhang,Jinhua Li,Xueying Chu,Fangjun Jin,Yingjiao Zhai
In this study, fluorine-doped ZnO (FZO) transparent conductive film was prepared using sol-combustion method at a low temperature. The optimized synthesis conditions were evaluated based on the analysis of crystal structure, morphology, and photoelectric properties. The results of X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–visible absorption spectroscopy (UV–vis), and Hall test (HALL) show that under the optimal ratio of precursor solution and optimal doping concentration (10%), the sol-combustion method can produce FZO transparent conductive film with a higher transmittance (80%), higher conductivity (36.9 Ω cm), and better crystalline quality and surface morphology at a relatively low temperature of 250°C. The FZO films produced using sol-combustion method have good application prospect.
研究领域:
材料科学
·
光学
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高影响因子
JOURNAL OF POWER SOURCES
·
2018
·
IF 6.945
Chao Wang,Youlong Xu,Xiaofei Sun,Baofeng Zhang,Yanjun Chen,Shengnan He
The Li 2 MnSiO 4 as a novel cathode material for lithium ion batteries, performs high specific capacity, high thermal stability, low cost and etc. However, it suffers from relatively low electronic conductivity and lithium ion diffusion rate. Herein, we successfully introduce fluorine to Li 2 MnSiO 4 (Li 2 MnSiO 4-x F x , x = 0.00, 0.01, 0.03 and 0.05) to overcome these obstacles. The results show that F doping not only enlarges the lattice parameters but also decreases the particle size, synergistically improving the lithium ion diffusion of Li 2 MnSiO 4 . Moreover, F doping increase electronic conductivity of Li 2 MnSiO 4 /C by inhibiting the formation of C-O bonds in the carbon layers . Meanwhile, F doping improves the crystallinity and stabilizes the crystal structure of Li 2 MnSiO 4 . Finally, the Li 2 MnSiO 3.97 F 0.03 /C with the best electrochemical performances delivers the initial specific discharge capacity of 279 mA h g −1 at 25mA g −1 current density from 1.5 V to 4.8 V. Also, it maintains a higher capacity (201 mA h g −1 ) than F-free Li 2 MnSiO 4 (145 mA h g −1 ) after 50 cycles.
研究领域:
材料科学
·
电化学
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JOURNAL OF SOLID STATE CHEMISTRY
·
2013
·
IF 2.04
Lingyun Dong,Shilie Pan,Hongping Wu,Xin Su,Hongwei Yu,Ying Wang,Zhaohui Chen,Zhenjun Huang,Zhihua Yang
A series of lead-containing halogen oxyborates, Pb 6 B 3 O 10 X ( X =F, Cl, Br), have been grown by high-temperature solution method and their crystal structures were determined by single-crystal X-ray diffraction. They are isostructural and crystallize in the space group Pbcm of the orthorhombic crystal system . The crystal structures are dominated by one-dimensional ∞ [(Pb 4 O)(BO 3 ) 3 ] “ Zig-Zag ”-chains, while the remaining Pb atoms and X ( X =F, Cl, Br) atoms are filled to balance the charge. Compared with the previously reported compound Pb 4 O(BO 3 ) 2 (the molecular formula Pb 4 O(BO 3 ) 2 can be regarded as Pb 6 B 3 O 10.5 ) with the space group Aba 2, the structures of Pb 6 B 3 O 10 X ( X =F, Cl, Br) are completely different from that of Pb 4 O(BO 3 ) 2 . IR spectroscopy , UV–vis-NIR diffuse reflectance spectroscopy , thermal analysis, and theoretical calculations were also performed on the reported materials.
研究领域:
材料科学
·
晶体学
·
光学
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APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Qi Wang,Baker Rhimi,Hui Wang,Chuanyi Wang
To solve the aggregation problem of TiO 2 nanomaterials and improve the catalytic efficiency, F-doped TiO 2 /exfoliated bentonite (TF/EB) composite was prepared by dispersing F-doped TiO 2 (TF) nanoparticles on an exfoliated bentonite (EB) using a facile sol–gel method. The exfoliated bentonite was prepared by liquid-exfoliation method from the natural bentonite (B). The prepared samples were applied for toluene degradation in gas phase under UV and visible light irradiation. The as-prepared TF/EB composite exhibited higher toluene degradation efficiency than that of pure TiO 2 , F-doped TiO 2 and TF/B composite. Results indicated that the calcination temperature and the initial F/Ti atom ratio of reaction precursors greatly affected the photocatalytic activity towards toluene degradation. The best photocatalytic performance was obtained by the sample calcinated at 400 °C with an initial F/Ti atom ratio of 5%. The improved photocatalytic performance is ascribed to a series of benefits introduced by F-doping and exfoliation process. The presence of F - ions increases the percentage of exposed reactive {0 0 1} facets on TiO 2 . Moreover, F - ions incorporated into the TiO 2 lattice generate oxygen vacancies and Ti 3+ defects, which influence the transfer and migration of the photoinduced charge carriers and induce a visible-light photocatalytic activity . Furthermore, the electrostatic interaction of negatively charged exfoliated bentonite surface leads to a more efficient separation of charge carriers.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Hong Chen,Min Sang,Yucheng Pan,Shilong Duan,Yuan Hu,Xinglong Gong
Developing devices emphasizing safety protection is becoming increasingly important due to the widespread occurrence of impact damage and thermal hazards. Herein, the F-SSG/TPU-based circular cavity structure (FC) is developed through a convenient and efficient template method, which can effectively achieve anti-impact and thermal insulation for protection. The flame-retardant shear stiffening gel/thermoplastic urethane (F-SSG/TPU) is synthesized through the dynamic interaction between the SSG, TPU, and modified ammonium polyphosphate (APP@UiO-66-NH2) by thermo-solvent reactions. The developed FC can dissipate the impact force from 4.19 to 0.99 kN at 45 cm impacting heights, indicating good anti-impact performance. Moreover, the thermal insulation test demonstrates that the FC achieves a temperature drop of 76 °C at 160 °C attributed to the unique cavity structure design. Under the continuous shock of high-temperature flame, FC remains intact, and its performance is almost undamaged. These results elaborate that the designed FC can effectively resist various damage, such as high-temperature shock and collision. Then, a wearable wristband integrated with FC is developed which exhibits superior impact resistance and heat insulation properties compared with commercial wristbands. In short, this cavity structure based on high-performance F-SSG/TPU material shows promising potential applications in the protection field.
研究领域:
材料科学
·
工程学
·
安全技术
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JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Lijie Duan,Mengbin Gu,Minghao Wang,Liquan Liu,Xue Cheng,Xueqi Fan,Jun Huang
Widespread detection in soils and sediments underscores the potential threats posed by persistent, bioaccumulative and toxic perfluorooctane sulfonate (PFOS) to ecosystems and organisms. Nevertheless, the formidable energy of the C-F bond imparts stability and hampers degradation. This study investigates the potential of boron carbide (B 4 C), a hard-ceramic material often utilized in armor and abrasion contexts, for degrading solid-phase PFOS through ball milling. Following a 60-minute reaction period, PFOS degradation reached 100 %, while desulfurization stabilized at 13.9 %. Defluorination initially rose to 23.7 % but subsequently displayed a gradual decline. Fluoride ions, once released, were secured and the stable reservoir surface of B 4 C during the ball-milling process, leading to the formation of B-C-B-F chemical bonds, which was confirmed through characterization by XPS, FTIR, and solid-state NMR analyses. Furthermore, intermediate byproducts formed during the degradation of PFOS, encompassing perfluoroalkyl sulfonic acids (PFSAs) and perfluoro carboxylic acids (PFCAs), were identified. Eventually, the generation of free electrons, contributing to the facilitation of degradation for both PFOS and its intermediates, was confirmed through the DPPH experiment. This identification underscores the intricacy of the PFOS degradation pathway, which encompasses the generation and subsequent breakdown of these intermediates. These discoveries hold significance for pioneering sustainable and inventive methods to combat PFOS pollution across diverse applications. Furthermore, they enrich the comprehension of how mechanical forces can be leveraged for the eco-friendly removal of PFOS contaminants.
研究领域:
环境科学
·
材料科学
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高影响因子
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