Journal of Sustainable Metallurgy
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2022
·Vol. 8
·期 3
·1090-1103
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IF 3.068
Jin Yonglong,Gao Lihua,He Zhijun,Sun Yujia
An economic and effective strategy synchronously utilizing blast furnace bag dust (BF-BD) and converter-removing dust (C-RD) by carbothermic reduction roasting is reported to achieve separation and recovery of iron and zinc. In this paper, the effect of operating parameters on the recovery rate and remove rate of Fe and Zn from BD and GD was initially studied by synergetic carbothermic roasting reduction. The optimized parameters include a reduction temperature pf 1200 °C, a reduction time of 90 min, a FC/O of 2.0, and a proportion of C-RD/BF-BD of 7:3, and the removal efficiency of Zn and metallization degree of Fe reached 98.35% and 90.58%, respectively. The phase transformation and stepwise reduction behavior of wüstite (ZnO) x (FeO) 1− x , spinel Zn x Fe 1− x Al 2 O 4 , olivine Zn x Fe 2− x SiO 4 , and gehlenite Zn z Fe 2− x SiAl 2 O 7 are systematically investigated by SEM–EDS, XRD, TG/DTG, and thermodynamic analyses. It was found that the formation of wüstite (ZnO) x (FeO) 1− x as an intermediates plays an crucial role in the formation of metallic Zn–Fe–C alloy. Phase transformation and reduction mechanisms of C-RD and BF-BD and the interfacial reaction formation mechanism of wüstite (ZnO) x (FeO) 1− x were discussed and clarified in synergistic carbothermic reduction process. Graphical Abstract
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JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
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2022
·Vol. 107
·期 1
·178-189
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IF 2.606
Li Qing,Qian Fuping,Yuan Ke,Dong Wei,Han Yunlong,Lu Jinli
In order to solve the problem of blocking the filter media when bag filters are used to deal with high-humidity dust, hydrophobic surface-modified filter media were prepared. Here we constructed a multi-layer rough structure using TiO 2 and SiO 2 , with polydimethylsiloxane (PDMS) subsequently deposited to reduce its surface energy to prepare stable and robust TiO2–SiO2@PDMS modified superhydrophobic filter media. Through modification of the filter media, its surface was changed from superhydrophilic to superhydrophobic, and the water contact angle reached 158°. For the particles with 0.3 μm, the filtration efficiency and quality factor of the modified filter media are higher than those of the unmodified filter media at a flow velocity of 0.043–0.127 m/s, which improves the filtration performance of the filter media. In addition, the modified filter media has strong durability in harsh environmental conditions (such as mechanical wear, strong acid or alkali solution), and has excellent self-cleaning performance. Therefore, such superhydrophobic filter media have great potential for the application of bag filters in various industrial production processes.
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Advanced Fiber Materials
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2022
·Vol. 4
·期 5
·1219-1232
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IF 12.958
Jiao Yongjie,Li Xiaojing,Chen Jinjie,Li Chaojing,Liu Laijun,Liu Xingxing,Wang Fujun,Chen Guang,Wang Lu
Fibrosis is a common problem in soft tissue regeneration, often caused by the differentiation of fibroblasts into myofibroblasts. Because of the nanoscale topology that regulates the mechanical transduction of cells, nanofibers or nanoparticles are commonly used to modulate fibroblast differentiation. However, the strength of nanofibers is insufficient, and the physiological toxicity of nanoparticles still remains to be verified. In this study, self-induced crystallization was used to construct nano-protrusions on the random and aligned polycaprolactone microfibers to regulate the behavior of fibroblasts. The results revealed that the mechanical properties of microfibers with a nanoscale topology were improved. Immunofluorescence staining manifested that nano-protrusions impeded the activation of integrins and vinculins, thereby inhibiting the nuclear transfer of Yes-associated protein, resulting in a decrease in the expression of α- smooth muscle actin. Nanoscale topology of microfibers hampered the activation of the Rho/ROCK signalling pathway. In general, we used a simple process to construct a fibrous scaffold with a micro-nano multilevel structure. This structure can hinder the transformation of fibroblasts into myofibroblasts on both random and aligned fibers, which is expected to prevent fibrosis. Graphical abstract
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2022
·Vol. 29
·期 51
·77851-77863
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IF 5.19
Jiang Changjin,Zhang Ting,Li Shuhui,Yang Zhaoguang
Fe(III)-chitosan and Fe(III)-chitosan-CTAB composites were prepared using an ionotropic gelation method. Various techniques were used to analyze the morphology, structure, and property of the adsorbents, including SEM, EDS, FT-IR, XPS, and zeta potential. Compared with Fe(III)-chitosan, Fe(III)-chitosan-CTAB was more effective for As(V) adsorption at a wide range of pH (3.0–8.0). The adsorption of As(V) onto Fe(III)-chitosan and Fe(III)-chitosan-CTAB could reach equilibrium in 20 min, and their maximum adsorption capacities were 33.85 and 31.69 mg g ‒1 , respectively. The adsorption kinetics was best described by the pseudo-second-order model ( R 2 = 0.998 and 0.992), whereas the adsorption isotherm was fitted well by the Freundlich model ( R 2 = 0.963 and 0.987). The presence of H 2 PO 4 – significantly inhibited the adsorption of As(V) onto Fe(III)-chitosan and Fe(III)-chitosan-CTAB, and humic acid also led to a slight decrease in As(V) adsorption by Fe(III)-chitosan-CTAB. Over 94% of As(V) at the initial concentration of no more than 5 mg L –1 was removed from real water by the two adsorbents. 1% (w/v) NaOH solution was determined to be the most suitable desorption agent. Fe(III)-chitosan and Fe(III)-chitosan-CTAB still maintained their initial adsorption capacities after five adsorption–desorption cycles. Based on different characterization results, both electrostatic attraction and surface complexation mechanisms played important roles in As(V) adsorption on Fe(III)-chitosan and Fe(III)-chitosan-CTAB.
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高影响因子
CLAYS AND CLAY MINERALS
·
2022
·Vol. 70
·期 3
·450-459
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IF 2.207
Wang Yan,Zhuang Yu,Wang Sheng,Liu Yin,Kong Lingbing,Li Jianjun,Chen Huayong
In order to develop high-performance adsorbents to remove toxic methylene blue (MB) from wastewater, palygorskite (Plg) was utilized as a template to prepare palygorskite/carbon (Plg/C) composites by using a hydrothermal reaction in the presence of glucose. The porous Plg/C composites were then activated with ZnCl 2 . The effects of the dose of the activator and the activation temperature on the crystal structure, micro-morphology, specific surface area, and adsorption performance of the porous Plg/C composites were studied systematically here. X-ray diffraction (XRD) and scanning electron microscopy (SEM) results indicated that the crystal structure of Plg was destroyed during the activation process and irregular porous carbon was closely attached to the residual aluminosilicate skeleton. The activation was optimized at 400°C with a ZnCl 2 :Plg/C impregnation ratio of 2:1. The sample had a specific surface area of 1497.88 m 2 /g, together with a total pore volume and micropore volume of 1.0355 and 0.5464 cm 3 /g, respectively. The MB adsorption capacity was 381.04 mg/g. Such inexpensive, high-performance, porous Plg/C composites could find potential applications in wastewater treatment.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 20
·16113-16125
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IF 2.779
Wang Yuanyuan,Wu Linqiu,Hu Yingfei,Du Hongxiu,Liu Pengfei,Hao Lingyun,Guan Hangmin,Zhao Yijie
Photocatalytic removal of hexavalent chromium (Cr(VI)) based on semiconductor is important under visible light for environment and energy. Herein, a visible light-responsive heterojunction composed of molybdenum disulfide and zinc indium sulfide was synthesized through a simple one-pot hydrothermal method to ensure full contact between the two components to efficiently improve the Cr(VI) reduction. The MoS 2 /ZnIn 2 S 4 composites build heterojunctions between MoS 2 and ZnIn 2 S 4 to inhibit recombination of photogenerated holes and electrons and provide the reaction sites to trap photogenerated electrons to participate in the reduction of Cr(VI). The highly efficient reduction of Cr(VI) was obtained by adjusting the proportion of molybdenum disulfide. It demonstrates that the 0.5 wt% MoS 2 /ZnIn 2 S 4 composite microstructures show the highest degradation rate of 0.1989 s −1 under visible light irradiation, 1.7 times of bare ZnIn 2 S 4 . Moreover, the MoS 2 /ZnIn 2 S 4 showed excellent stability during photocatalytic recyclable processes. This work encourages researchers to remove Cr(VI) by constructing effective heterojunction structures.
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Plasmonics
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2022
·Vol. 17
·期 4
·1743-1750
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IF 2.726
Wang Tongtong,Zhang Qijia,Li Jia,Xu Guangda,Guo Na,Song Peng,Xia Lixin
Thiram is used as a fungicide and insecticide in agriculture to prevent white rot and anthracnose, but it also produces certain pesticide residues that endanger human health. Polydopamine (PDA) is an adhesive polymer that functionalizes almost all chemical materials, having been inspired by the adhesive properties of catechol and amines in mussel adhesive protein. In this work, we have fabricated a highly sensitive face mask (FM)–based surface-enhanced Raman scattering (SERS) substrate by depositing silver nanoparticles (AgNPs), using a PDA layer as an interface to promote adhesion. Face masks are currently ubiquitous, and are simple and easy to obtain, and this approach can be regarded as waste utilization. FM/PDA/AgNPs can detect Nile blue A (NBA) probe molecules at concentrations as low as 1.0 × 10 −9 M, and permit measurements with sensitivity and uniformity. The Raman substrate can be used to swab the surface of fruit to detect thiram at concentrations as low as 1.0 × 10 −7 M, and the reproducibility has been assessed. The simple utilization of this flexible SERS substrate holds promise for its practical application in the field of pesticide control.
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Chinese Medicine
·
2022
·Vol. 17
·期 1
·1-20
·
IF 4.546
Yu Hui,Shao Shumin,Xu Junnan,Guo Haibiao,Zhong Zhangfeng,Xu Jiangping
Background Fresh or dried Persimmon leaves (Diospyros kaki Thunb.) exhibit preventive effects on cardiovascular and cerebrovascular diseases. However, their antidepressant effects and underlying mechanisms are unclear. Thus, we investigated mechanisms responsible for Persimmon leaf extract (PLE) activity on chronic social defeat stress (CSDS)-induced depressive-like behaviors in mice.Methods CSDS was used as a mouse model of depression. We performed the sucrose preference test (SPT), forced swim test (FST), and tail suspension test (TST) to identify depressive-like behavior. Spine density and dendritic morphology were assessed using Golgi staining. Neurochemicals were quantified by microdialysis, doublecortin by immunofluorescence, and cAMP using an ELISA kit. Finally, the levels of cortical proteins of phosphorylated cAMP-response element binding protein (CREB), brain-derived neurotrophic factor (BDNF), postsynaptic density synapsin-1 and protein 95 (PSD95) were quantified by western blot. 16S rRNA gene sequencing was used to detect fecal microbiota.Results Treatment of CSDS-subjected mice with PLE (30.0–60.0 mg/kg, i.g.) enhanced sucrose preference, decreased immobility times in the TST and FST but did not affect locomotor activity. Furthermore, persistent social defeat stress decreased dendritic spine density and dendritic length in the brain, as well as decreased PSD95 and synapsin-1 expression. PLE, interestingly, inhibited dendritic spine loss and increased synaptic protein levels. PLE also increased brain levels of 5-HT, cAMP, phosphorylated (p)-CREB, BDNF, PSD95, and synapsin-1 in mice subjected to CSDS. Furthermore, PLE increased their doublecortin-positive cell count in the hippocampal dentate gyrus. CSDS mice represented a distinct fecal microbiota cluster which differed compared with normal C57BL/6J mice, and the phenotype was rescued by PLE.Conclusion sPLE alleviated CSDS-induced depressive behaviors and spinal damage by suppressing serotonin reuptake and activating the cAMP/CREB/BDNF signaling pathway. Simultaneously, PLE influenced the composition of the fecal microbiota in CSDS-subjected mice.
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Journal of Inorganic and Organometallic Polymers and Materials
·
2022
·Vol. 32
·期 9
·3407-3416
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IF 3.518
Pang Yaming,Gao Liguo,Xia Mingxuan,Fu Yuxiu,Song Xiaoli
In this paper, phenol was used as the material to be treated, and HMS molecular sieve was used as the catalyst for the catalytic treatment of the material. HMS, Ti-HMS, Ce-HMS and composite modified Ce/Ti-HMS molecules were used to prepare sieved catalysts. Simulated phenol-containing wastewater with phenol as the main component is treated. The structure of the molecular sieve and its elements and contents were characterized by field emission scanning electron microscope; the morphology of atoms or molecules in the material was characterized by X-ray diffractometer; the chemical bonds in the molecular structure were characterized by Fourier transform infrared spectroscopy. The change of vibration peak was analyzed, and the change of surface and skeleton structure was analyzed; the absorbance of the substance to be tested to visible light was measured by ultraviolet–visible diffuse reflectance method. The experiment was optimized by response surface methodology, and the oxidation of Ce 3+ was detected by infrared tracking, and the reaction mechanism of phenol catalytic degradation was analyzed. The active sites that determine the catalytic performance of the composite catalyst were studied by DFT calculations, which further confirmed that the bimetallic modified zeolite has better catalytic effect.
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APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2022
·Vol. 128
·期 8
·1-5
·
IF 2.983
Liu Biaojie,Yang Guoren,Meng Xianwei,Si Yunfei
Thermal stability is the main problem affecting the application of inorganic fluorescent materials in high-power LED devices. Here, we have synthesized a green light-emitting phosphor Na 2 Ca 1-x Ge 6 O 14 : xTb 3+ with high luminescence thermal stability mainly through high temperature solid-state reaction. By changing the concentration of doping ions, the traps concentration of the material can be increased, so that the thermal stability of the material can be improved, which is attributed to the traps compensating greater than the thermal quenching effect. This method of utilizing traps to improve thermal stability provides a potential synthesis strategy for improving high-power white LED used in automotive.
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CELLULOSE
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2022
·Vol. 29
·期 13
·7263-7276
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IF 6.123
Qiao Liangzhi,Liao Yuxin,Wang Xiawen,Wang Shanshan,Du Kaifeng
Cellulose microspheres are commonly chromatographic media yet seriously limited in biomacromolecules separation and purification due to the slow mass transfer kinetics resulting from their narrow nanopores. Herein, a macroporous cellulose microsphere (MCM) with enhanced mass transfer ability has been successfully developed by an oil-in-water-in-oil (O 1 /W/O 2 ) double emulsion strategy. The evolution profile of the double emulsion was tracked and achieved the optimization of interconnected macroporous structure. The macroporous structure not only provide fast mass transfer pathways for proteins but also increase the accessibility of meso/micropores. Benefitting from the macropores, the obtained diethylaminoethyl-modified MCM (DEAE-MCM) exhibits high permeability (3.81 × 10 –13 m 2 ), and fast adsorption rate (reaching equilibrium within 40 min) and high adsorption capacity (334.21 mg/g) for bovine serum albumin, far superior to commercially DEAE Sepharose Fast Flow. More importantly, under the high flow rate, DEAE-MCM remains a high dynamic adsorption capacity, promising it for fast protein chromatography.
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CATALYSIS LETTERS
·
2022
·Vol. 153
·期 5
·1319-1332
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IF 2.936
Amin Bilal Ul,Yu Haojie,Wang Li,Fahad Shah,Nazir Ahsan,Haq Fazal,Mehmood Sahid,Uddin Md Alim,Liang Ruixue,Liu Jinyi,Li Xuefei,Ding Lei
This study focus on hetero cyclic ferrocene-based furan and triazole (FT-Fcs) organometallic compounds with their burning rate catalytic and anti-migration application for rocket propellant system. FT-Fcs (Fc-FAM, Fc-AMT, and Fc-FAO) were successfully prepared by the coupling reaction from the corresponding unit monomers. The structures of the targeted FT-Fcs were characterized by 1 H NMR, 13 C NMR, FT-IR, XPS and ESI-MS. Reversible or quasi-reversible redox waves were observed in the current work using CV analysis of FT-Fcs and electrochemical behaviors were discussed. From the TGA data it was observed that with the addition of 5 wt% of Fc-AMT thermal decomposition temperature of pure AP was significantly decreased to 353.58 °C from 426.15 °C and proposed decomposition mechanism were discussed. Because of the presence of electronegative elements in the hetero cyclic ring, which are responsible for the establishment of interaction with AP and binding agent, FT-Fcs had better anti-migration performance than Fc. Graphical Abstract
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危险品化学品经营许可证（带存储）