LANGMUIR
·
2023
·
IF 3.9
Ze-Lin Qiu,Wen-Han Yu,Wu-Shang Yang,Tong Sun,Zi-Hao Zhao,Qian-Wei Su,Bao-Ku Zhu
High-efficiency dye desalination is crucial in the textile industry, considering its importance for human health, safe aquatic ecological systems, and resource recovery. In order to solve the problem of effective separation of univalent salt and ionic dye under the condition of high salt, ionic hyperbranched poly(amido-amine) (HBPs) were synthesized based on a simple and scalable one-step polycondensation method and then incorporated into the polyamide (PA) selective layers to construct charged nanochannels through interfacial polymerization (IP) on the surface of a polyvinyl chloride ultrafiltration (PVC-UF) hollow fiber membrane. Both the internal nanopores of HBPs (internal nanochannels) and the interfacial voids between HBPs and the PA matrix (external nanochannels) can be regarded as a fast water molecule transport pathway, while the terminal ionic groups of ionic HBPs endow the nanochannels with charge characteristics for improving ionic dye/salt selectivities. The permeate fluxes and dye/salt selectivities of HBP-TAC/PIP (57.3 L m–2 h–1 and rhodamine B (RB)/NaCl selectivity of 224.0) and HBP-PS/PIP (63.7 L m–2 h–1 and lemon yellow (LY)/NaCl selectivity of 664.0) membranes under 0.4 MPa operation pressure are much higher than PIP-only and HBP-NH2/PIP membranes. At the same time, this project also studied the membrane desalination process in a simulated high-salinity dye/salt mixture system to provide a theoretical basis and technical support for the actual dye desalination process.
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高影响因子
POLYMER COMPOSITES
·
2023
·
IF 5.2
Qing-qing Liu,Zheng-xing Dai,De-xiang Sun,Xiao-dong Qi,Jing-hui Yang,Yong Wang
With the trend of integration and miniaturization of stretchable electronics, thermal management has been a crucial issue. Developing novel materials with high thermal conductivity (TC) and flexibility is urgent. Herein, we report a stretchable polydimethylsiloxane (PDMS)/boron nitride nanosheet (BNNS)@spherical aluminum oxide (Al 2 O 3 ) composite with high TC and electrical insulation prepared by a two-step strategy of sucrose-template and hot-pressing. An effective foam-pressing route benefits the composites to form a three-dimensional thermally conductive networks, improving the in-plane TC value of the resultant composite to 4.03 W/(mK) at the filler mass fraction of 35.7 wt% and enhancing to 4.66 W/(mK) under 40% stretching ratio. Meanwhile, the composites can be restored to their former state and retain thermally conductive stability with repeated bending and twisting tests. Moreover, the composites were applied in LED with stretching, exhibiting good heat dissipation performance. These results demonstrate this PDMS composite can be potentially utilized as a high-performance material to solve thermal management problems in flexible electronics. Highlights The heat conduction network is prepared by sucrose-template and hot-pressing. BNNS@P-Al 2 O 3 fillers are self-assembled via the electrostatic interaction. The composites exhibit good thermal conduction and superior flexibility. The thermal conductivity of the composite increases after stretching. The composites can retain thermal conductive stability after deformation.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Haitao Wang,Juan He,Lei Ge,Zhi Xu,Wei Zhou,Zongping Shao
Although many metal-based compounds demonstrate the ability to detect glucose, limited metal compounds have the desired high conductivity. Metal nitrides with different states of metal elements (M), such as M 0 and M 2+/3+ , can perform excellent conductivity and catalytic activity. In this work, self-supported non-enzymatic electrochemical sensors supported by carbon paper (CP) were synthesized for monitoring glucose in alkaline solutions. The antiperovskites FeNNi 2 Co and FeNNi 3 as electrocatalysts are first reported in the field of the electrochemical sensor, displaying outstanding catalytic activity and high electrical conductivity. Electrochemical tests suggest that the FeNNi 2 Co/CP and FeNNi 3 /CP electrodes perform outstanding sensing abilities toward rapid glucose determination. In addition, the FeNNi 2 Co with multi-metals can display the trimetallic synergic effect and superior performance than the original material of FeNNi 3 . The sensitivity of FeNNi 2 Co/CP electrode can reach level of 3621 and 1141 μA mM −1 cm −2 in the concentration ranges of 2–2789 μM and 2789–7444 μM, respectively. The repeatability of the glucose concentration in the glucose drink measured by the FeNNi 2 Co/CP electrode can achieve 96.2%.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2021
·
IF 5.645
Ming-Zhao Xiao,Rui Sun,Zhi-Yan Du,Wen-Bin Yang,Zhuohua Sun,Tong-Qi Yuan
Cadmium (Cd) contaminant in soil can pollute crops and poison consumers higher in the food chain. Sorghum ( Sorghum bicolor (L.) Moench) is a promising bioenergy crop that can absorb and accumulate Cd from soil while generate renewable biomass resources for bioethanol or other valuable products, and limit waste production by rational utilization of all components. In this study, a sustainable agricultural strategy was presented and six sorghum cultivars grown under field conditions for the phytoremediation of Cd-contaminated agricultural soil were investigated with the goal of comparing their ability to accumulate Cd and their theoretical bioethanol yields (Cd concentration in the soil was 0.25 and 0.96 ppm). Striking differences were found in the Cd accumulation of these sorghum cultivars, and the result indicated that the Cd accumulation in stalks increased with maturity. The total absorbability of Cd ranged from 19.6 to 148 g/ha, and N6G60 sorghum showed the highest Cd accumulation with a concentration of 9.16 ppm in the stalk on a dry basis. The theoretical yield of bioethanol ranged from 5510 to 7510 L/ha. The overall performance of N6G60 and 15016 sorghums surpassed that of other sorghum cultivars because of their stronger capacities for Cd translocation and higher theoretical yields of bioethanol. Considering the experimental results, as well as the potential ethanol yield and growing situations of sorghums, 15016 sorghum was considered the cultivar showing the most promise for future applications.
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高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Hao Huang,Di Wang,Tarun Belwal,Li Dong,Ling Lu,Ying Zou,Li Li,Yanqun Xu,Zisheng Luo
The postharvest senescence accompanied by yellowing limited the shelf-life of broccoli. In this study, we developed a novel W/O/W double emulsion co-delivering brassinolide and cinnamon essential oil and applied it to broccoli for preservation. Results showed that double emulsion prepared by whey protein concentrate-high methoxyl pectin (1:3) exhibited best storage stability with largest particle size (581.30 nm), lowest PDI (0.23) and zeta potential (−40.31 mV). This double emulsion also exhibited highest encapsulation efficiency of brassinolide (92%) and cinnamon essential oil (88%). The broccoli coated with double emulsion maintained higher chlorophyll contents and activities of chlorophyllase and magnesium-dechelatase were reduced by 9% and 24%, respectively. The energy metabolic enzymes (SDH, CCO, H + -ATPase, Ca 2+ -ATPase) were also activated, inducing higher level of ATP and energy charge. These results demonstrated W/O/W double emulsion co-delivering brassinolide and cinnamon essential delayed the senescence of broccoli via regulating chlorophyll degradation and energy metabolism.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Zhengyang Gu,Ping Li,Xuerui Gao,Yuan Qin,Yishuai Pan,Youbing Zhu,Shuili Yu,Qing Xia,Yanling Liu,Dongsheng Zhao,Guicai Liu
Hydrophilic and porous nanofillers have shown great benefits in the attainment of high-performance nanofiltration (NF) membranes. In this work, a novel nanoporous covalent organic framework (NCOF) was facilely synthesized under mild conditions and deposited onto a polyethersulfone substrate to induce formations of crumpled polyamide layers via interfacial polymerization. With the incorporation of NCOFs, the surface of the COF-based thin-film nanocomposite (CTN) membranes gradually transformed from tent-like to mesh morphology, which significantly enhanced the water permeance owing to the increased effective membrane filtration area and additional water transport channels provided by NCOFs. Besides, the favorable compatibility between NCOFs and the polyamide layer endowed the CTN membranes with high rejection capacities to a variety of solutes. The optimal membrane with the NCOF deposition density of 19.27 μg cm −2 , CTN9 membrane, showed nearly twice higher water permeance of 15.5 L m −2 h −1 bar −1 while maintaining high rejections of Na 2 SO 4 and MgCl 2 (98.9% and 94.2%, respectively). In addition, the CTN membranes exhibited a satisfying stability during the long-term filtration of saline solutions as well as an improved antifouling ability to the model foulants of bovine serum albumin. The superior NF performance rendered the NCOF functionalized membranes highly promising for water treatment.
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高影响因子
EUROPEAN JOURNAL OF PHARMACEUTICS AND BIOPHARMACEUTICS
·
2021
·
IF 5.571
Xiaotian Zhao,Wanqiu Huang,Xufeng Li,Runxing Lin,Qiuxia Li,Jingmiao Wu,Zongjun Yu,Yanfang Zhou,Hong Huang,Mingguang Yu,Yugang Huang,Guodong Ye
Vascular embolization is a well-known therapeutic treatment against hepatocellular carcinoma . However, existing embolic agents require complex synthesis, toxic organic solvents and sometimes produce only low yields. In this study, a novel photopolymerization technique, which addresses these issues, was used to prepare embolic microspheres successfully from the sucrose multi-allyl ether monomer in one step. Compared to the preparation of such microspheres always involved in multiple steps or complicated conditions, we obtained the microspheres used photoclick method in a soft template with simple, economic and feasible procedure. This work focuses on the synthesis of new materials by conducting a photopolymerzation in the presence of the sucrose monomer and the photoinitiator . Then, the embolic microspheres obtained were characterized by morphology assay, degradation, and swelling test. Cell experiments showed that the microspheres had good biocompatibility . Rabbit embolizations showed that the microspheres had long-term embolic effects. It is manifested that one-step preparation of photoclick method hold great potential and competitiveness of being used in preparation embolic microspheres in clinic.
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高影响因子
FUEL
·
2021
·
IF 6.609
Chihe Sun,Qiang Liao,Ao Xia,Cheng Chen,Qian Fu,Yun Huang,Xun Zhu,Fubao Sun
A multifunctional carbon solid acid with binding and catalytic domains was prepared by co-carbonisation of β-cyclodextrin and polyvinyl chloride followed by sulfonation. The abundant –OH group on the surface of β-cyclodextrin cavity increased the hydrophilicity and dispersibility of catalyst, and the grafting of –Cl group collectively promoted its adsorption performance (45.8% within 6 h). Additionally, the oxidation and substitution of alkyl chains and aliphatic bridges in carbon precursors were responsible to introduce catalytic functional –SO 3 H group. The catalyst directionally facilitated disaccharide hydrolysis with strong bond-breaking effects on α–1, 4 and β–1, 4–glycosidic bonds; the hydrolysis rates ranged 72.7%–84.3%, and the monosaccharide yields ranged 68.7%–78.2%. However, the destruction of α–1, 1–glycosidic bond was weak, and the fracture of α, β–1, 2–glycosidic bond was likely to cause fructose decomposition. The reaction rate constants of glucose production and decomposition increased with the increase of temperature. The apparent activation energy of glucose production was 98.6 kJ/mol, decreased by 25.9% and 10.4% compared with homogeneous dilute acids and conventional carbon solid acids. The binding domains of catalyst not only played important role in enhancing the surface hydrolysis reaction of saccharides, but also decreased the activation energies.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Zhongbao Ma,Long-Fei Ren,Diwen Ying,Jinping Jia,Jiahui Shao
High-performance thin film composite polyamide (TFC-PA) membranes with controllable structure and transport properties are of great significance. However, TFC-PA membranes prepared by interfacial polymerization are far from ideal due to their quick and uncontrollable reaction process. In this study, we reported a novel strategy to fabricate TFC-PA membranes via an electrospray interface-less polymerization (EILP) technique with a miscible solvent system. The miscible solvent system facilitated both the stable and fine spraying of monomer solutions and the efficient polymerization of monomers, and thus resulting in the formation of a smooth and defect-free PA skin layer. Moreover, the crosslinking degree and thickness of the EILP membrane skin layer could be controlled easily by regulating the concentration and dose of sprayed monomers. Attenuated total reflectance-Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, zeta potential and mean effective pore size were employed to characterize the EILP membrane and clarify the separation mechanism. The optimum EILP membrane showed excellent filtration performance with a high water flux of up to 17.7 L m −2 h −1 bar −1 , high salt rejection (98.2% of Na 2 SO 4 ) and complete dye rejection for Congo red. This study provides new insights into the understanding of electrospray procedures and enlightens the design and manufacture of advanced membrane materials through electrospray.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2021
·
IF 5.279
Danqiu Luo,Xiaohuan Huang,Bangyan Liu,Wenying Zou,Yuangen Wu
The rapid and onsite detection of glyphosate herbicides in agricultural products is still a challenge. Herein, a novel colorimetric nanozyme sheet for the rapid detection of glyphosate has been successfully prepared through the physical adsorption of porous Co3O4 nanoplates on a polyester fiber membrane. Glyphosate can specifically inhibit the peroxidase-mimicking catalytic activity of porous Co3O4 nanoplates, thereby the visual detection of glyphosate can be realized by distinguishing the change in the color intensity of the established nanozyme sheet. The prepared nanozyme sheet has good sensitivity and selectivity, with a detection limit of 0.175 mg·kg–1 for glyphosate detection just by the naked eyes. It can effectively detect glyphosate within 10 min, and the color spots can maintain more than 20 min. The nanozyme sheet is not easily affected by the external environment in detection and storage. The merits of the nanozyme sheet facilitate its practical application in the large-scale preliminary screening of glyphosate residues in agricultural products.
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高影响因子
SENSORS
·
2021
·Vol. 21
·期 3
·1003
·
IF 3.576
Dongmei Li,Chaofan Weng,Yi Ruan,Kan Li,Guoan Cai,Chenyao Song,Qiang Lin
A chiral sensor with optical rotation detection based on weak measurement for the kinetic study of sucrose hydrolysis is presented. Based on the polarization modulation to the pre-selection state, the optical rotation of chiral sample was accurately determined through the central wavelength shift of the output spectrum. With this approach, the concentration response curves of sucrose and its hydrolysis products, i.e., fructose and glucose, were experimentally obtained for the hydrolysis analysis. By collecting the output spectrum with a frequency of 100 Hz and fitting the central wavelength shift synchronously during the measurement, the sucrose hydrolysis process was monitored in real time. Different hydrolysis conditions with varied concentration of invertase enzyme and citrate were implemented in this work. As a consequence, the real-time hydrolysis curves of the hydrolysis process with distinct velocities was achieved and analyzed. Such a kinetic monitoring about sucrose hydrolysis with optical rotation detection technology played a critical role in the researches involving sucrose, and also revealed the great potential of weak measurement in intersections, such as food safety inspection and chemical analysis.Keywords:chiral sensor;optical sensors;weak measurement;sensor systems and applications;sucrose hydrolysis
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Bing-Xin Gu,Zhuang-zhuang Liu,Kai Zhang,Yan-Li Ji,Yong Zhou,Cong-Jie Gao
Organic solvent nanofiltration (OSN) as a high-efficient membrane separation technology has play an important role in chemical industrial separation, clean energy production, and high-value resources recycling, etc. Inspired by the asymmetric biological structure of Desert beetle, herein a novel kind of polymeric OSN membranes with asymmetric structure have been fabricated via fluorinated polymeric networks (FPNs) regulated interfacial polymerization. The FPNs were formed with m-phenylenediamine (MPD), dopamine (DA) and 1H,1H,2H,2H-Perfluorodecane-thiol (PFDT) via the Michael addition and Schiff-base reaction. The FPNs tailored thin-film composite membrane (FPN-TFC) with biomimetic asymmetric structure, e.g., much hydrophilic looser front surface and much hydrophobic denser rear surface, exhibits an optimum ethanol permeance ~15.7 L m −2 h −1 .MPa −1 and high rejection ~99.5% for Rose Bengal (RB) dye molecules (test with 0.05 g L −1 RB ethanol solution at 25 °C under 1.5 MPa), which is almost 6 times higher than that of the conventional TFC membranes. Moreover, there is a good stability for the FPN-TFC membrane tested with different polar solvents in long-term operation process. Therefore, this work provides a guidance for the development of advanced polymeric OSN membranes with both high solvent permeability and solute selectivity, as well as good stability in OSN process, which would have broad application prospects in chemical and other industrial fields.
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高影响因子
危险品化学品经营许可证（带存储）