JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Tong Zhang,Qiaoying Wang,Bingbing Zhang,Zhichao Wu,Zhiwei Wang
Inspired by the simultaneous increase of permeability and selectivity by introducing nanobubbles by physical methods, this study firstly proposed a in situ chemical nanobubbles controlled guanidyl-incorporated double layer nanofiltration (NF) membrane for Mg/Li separation in salt-lake brine. As a bridge, 1,3-diaminoguanidine released nanobubbles rapidly and uniformly by pH control while polymerizing with trimesoyl chloride (TMC) during interfacial polymerization, followed by polyethyleneimine (PEI) secondary reaction, which effectively changed the solute transportation to obtain the shortest pathways in horizontal and normal directions. Compared with conventional PEI-TMC membrane, the water flux of guanidyl-incorporated PEI (G-PEI) membrane was obviously increased by 54.28% while separation factor of Li/Mg ( S Li/Mg ) enhanced by 63.27% in the initial 1 h, indicating chemical nanobubble interlayer effectively broke Trade-off effect by increasing the effective filtration area. In the long-term operation, G-PEI-NF membrane exhibited an excellent S Li/Mg of >60, low mass rate of Mg 2+ and Li + (MLR) of 0.31 and Li + purity of >75% with the stable flux of 19–20 L/(m 2 ·h). This study expected to provide a novel chemical nanobubble interlayer NF membrane with high filtration performance for Mg/Li separation in salt-lake brine.
✓ 已验证
DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2024
·
IF 7.2
Yan Gao,Shuhong Jia,Hongyan Zhou,Ziyun Chen,Miao Yan,Jianshe Zhao
s An efficient and sustainable catalyst is urgently needed for the actual oil refining process. Different amounts of peroxophosphotungstate (PW 4 ) were successfully encapsulated into the pore of ZIF-8 framework material to obtain composites (x%-PW 4 @ZIF-8, x = 10.7, 14.6, 27.5 and 34.8) through a stirring process at room temperature for desulfurization of model diesel. The successful encapsulation of the active component PW 4 in the pore was verified by a variety of characterization methods, and there is weak force between the PW 4 and the ZIF-8. The composite 27.5%-PW 4 @ZIF-8 showed good catalytic activity for various sulfides under moderate conditions. In addition, DBT removal rate catalyzed by 27.5%-PW 4 @ZIF-8 could still reach levels of 95.1% after 10 cycles. The high efficiency of activity and excellent reusability are attributed to the high matching of host and guest sizes. This work provides new inspiration for designing and preparing catalysts with high activity and excellent reusability by a simple and environmentally friendly method.
✓ 已验证
DOI
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2024
·
IF 3.3
Yinfang Yan,Lin Li,Mingyuan Zheng,Bingbing Duan,Jiajing Zhang,Yashan Li,Wei Liu,Xu Liu
BACKGROUND Spine grapes are widely cultivated in southern China because of their strong adaptability to hot and humid climates. As a wild species native to China, spine grape ( Vitis davidii Foëx) was studied as a resource of proanthocyanidins (PAs). PA composition, biosynthesis, and histochemistry in different tissues (skins, seeds, and stems) during berry development were analyzed in this study. RESULTS The findings revealed that PA accumulation occurred in concurrence with flowering and was completed by veraison. High-performance liquid chromatographic results showed that the epicatechin type was the most dominant. The skins were more likely to accumulate PA polymers. Reverse transcription–quantitative polymerase chain reaction analysis revealed that the expression levels of structural genes (flavonoid-3′-hydroxylase, flavonoid-3′5′-hydroxylase, dihydroflavonol 4-reductase, leucoanthocyanidin reductase, and leucoanthocyanidin dioxygenase) were positively associated with PA dynamic changes. Histochemical results revealed that PAs in skins were mainly found in the hypodermis of the exocarp, PAs in seeds were mainly found in the middle layer of the outer integument of the testa, and PAs in stems were mainly found in the phloem. CONCLUSION This study provides a clear understanding of the spatial and temporal accumulation of PAs in spine grape, and forms a basis for the analysis of structural profiles and synthesis of PAs and their biological effects. © 2024 Society of Chemical Industry.
✓ 已验证
DOI
PubMed
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2021
·
IF 6.475
Xin Ying,Jiaxing Gao,Jing Lu,Changlu Ma,Jiaping Lv,Benu Adhikari,Bo Wang
Soy peptide solution (40%, w/w) was successfully encapsulated in a W 1 /O/W 2 double emulsion produced by a two-step emulsification process. Polyglycerol polyricinoleate (PGPR) was found to be an effective inner emulsifier compared to Span 60 and lecithin to produce stable W 1 /O primary emulsion. The primary emulsion was subsequently emulsified into an outer aqueous phase (W 2 ) containing octenyl succinic anhydride (OSA) starch and maltodextrin. The droplet size and encapsulation efficiency of the peptide solution in W 1 /O/W 2 emulsion were found to depend on the W 1 :O ratio, peptide concentration in the inner W 1 phase and homogenization condition of the secondary emulsification step. The double emulsion with the highest encapsulation efficiency (>80%) was prepared by: (i) using 40% (w/w) soy peptide solution as W 1 phase; (ii) controlling W 1 :O ratio at 3:7 (w/w) and (iii) homogenizing the emulsion at 10,000 rpm for 3 min. The freeze-dried microcapsule powder of W 1 /O/W 2 emulsion showed higher encapsulation efficiency (>70%) compared to spray-dried one. The freeze-dried microcapsule of W 1 /O/W 2 double emulsion developed in this study is a promising delivery matrix to encapsulate hydrophilic ingredients including peptides. Fourier-transform infrared spectroscopy (FTIR) spectra of the microcapsule powder indicated good compatibility between peptide and encapsulants.
✓ 已验证
DOI
高影响因子
JOURNAL OF EXPERIMENTAL BIOLOGY
·
2018
·Vol. 221
·期 5
·
IF 3.179
Zhang Junjun,Wang Zhengwei,Wen Ping,Qu Yufeng,Tan Ken,Nieh James C.
The nectar of the thunder god vine, Tripterygium hypoglaucum , contains a terpenoid, triptolide (TRP), that may be toxic to the sympatric Asian honey bee, Apis cerana , because honey produced from this nectar is toxic to bees. However, these bees will forage on, recruit for, and pollinate this plant during a seasonal dearth of preferred food sources. Olfactory learning plays a key role in forager constancy and pollination, and we therefore tested the effects of acute and chronic TRP feeding on forager olfactory learning, using proboscis extension reflex conditioning. At concentrations of 0.5–10 µg TRP ml −1 , there were no learning effects of acute exposure. However, memory retention (1 h after the last learning trial) significantly decreased by 56% following acute consumption of 0.5 µg TRP ml −1 . Chronic exposure did not alter learning or memory, except at high concentrations (5 and 10 µg TRP ml −1 ). TRP concentrations in nectar may therefore not significantly harm plant pollination. Surprisingly, TRP slightly increased bee survival, and thus other components in T. hypoglaucum honey may be toxic. Long-term exposure to TRP could have colony effects but these may be ameliorated by the bees’ aversion to T. hypoglaucum nectar when other food sources are available and, perhaps, by detoxification mechanisms. The co-evolution of this plant and its reluctant visitor may therefore likely illustrate a classic compromise between the interests of both actors.
✓ 已验证
DOI
高影响因子
NANOTECHNOLOGY
·
2018
·Vol. 29
·期 20
·205705
·
IF 3.404
X X Cui,Q Fan,S J Shi,W H Wen,D F Chen,H T Guo,Y T Xu,F Gao,R Z Nie,Harold D Ford,Gordon H Tang,C Q Hou,B Peng
Fluorescence imaging signal is severely limited by the quantum efficiency and emission wavelength. To overcome these challenges, novel NIR-emitting K5NdLi2F10 nanoparticles under NIR excitation was introduced as fluorescence imaging probe for the first time. The photostability of K5NdLi2F10 nanoparticles in the water, phosphate buffer saline, fetal bovine serum and living mice was investigated. The fluorescence signal was detected with depths of 3.5 and 2.0 cm in phantom and pork tissue, respectively. Fluorescence spectrum with a significant signal-to-background ratio of 10:1 was captured in living mice. Moreover, clear NIR images were virtualized for the living mice after intravenous injection. The imaging ability of nanoparticles in tumor-beard mice were evaluated, the enrichment of K5NdLi2F10 nanoparticles in tumor site due to the enhanced permeability and retention effect was confirmed. The systematic studies of toxicity, bio-distribution and in-vivo dynamic imaging suggest that these materials give high biocompatibility and low toxicity. These NIR-emitting nanoparticles with high quantum efficiency, high penetration and low toxicity might facilitate tumor identification in deep tissues more sensitively.
✓ 已验证
DOI
高影响因子
Frontiers of Environmental Science & Engineering
·
2025
·Vol. 19
·期 8
·1-13
·
IF 6.4
Shi Lin,Zhan Cetao,Bai Wenjing,Wang Wei,Yuan Shoujun,Hu Zhen-Hu
Arsanilic acid ( p -ASA), an organoarsenic additive found in livestock wastewater, can release toxic inorganic arsenic into the environment. While bioelectrochemical systems have proven effective in decomposing organoarsenics, managing the resulting inorganic arsenic remains a challenge. This study demonstrated the feasibility of a two-stage bioelectrochemical process designed to facilitate p -ASA degradation and in situ recover inorganic arsenic from contaminated livestock wastewater. It consisted of two sequential stages: (I) anodic stimulation for p -ASA degradation and (II) reversing electrode polarities for the cathodic reduction of inorganic arsenic. In Stage I, the anode significantly enhanced the degradation of p -ASA, resulting in 18 μg/L of As(III) and 700 μg/L of As(V) released into the bulk solution. In Stage II, the cathode further reduced the As(III) and As(V) to 8.9 and 35.5 μg/L, respectively, through the synergistic action of the cathode and suspended microbes. The inorganic arsenic was recovered as a layer of As(V)-O on the cathode. Microbial analysis indicated that Alcaligenes was responsible for the degradation of p -ASA, while Anaerobacillus and Desulfitibacter played key roles in reducing As(V) and As(III) on the cathode, respectively. This study provided a promising alternative approach for the removal of organoarsenics and in situ recovery of inorganic arsenic from organoarsenic-bearing wastewater.
✓ 已验证
DOI
高影响因子
Exploration
·
2024
·
IF 0
Heng Guo,Linlin Shi,Zengliang Shi,Yue He,Yizhi Zhu
Yellow light-emitting diodes (LEDs) with a wavelength of 570–590 nm can reduce the excitability of peripheral nerves and the sensitivity of the skin, stimulate collagen synthesis, and tighten the skin, which plays an important role in skin rejuvenation. In general, commercial LEDs are made of phosphor excited by ultraviolet chips. It is very important for the development of yellow light emitters with high luminous efficiency, good stability, and environmental protection. For the first time, a simple organic structural unit (2-methylimidazole, 2-MIM) was used to collect a mixture of two metal precursors (CsI and CuI) and successfully synthesized an all-inorganic lead-free yellow light CsCu 2 I 3 powder in water. The prepared CsCu 2 I 3 powder exhibited excellent optical properties and considerable stability. Finally, a phosphor-converted LED (pc-LED) device was fabricated via the CsCu 2 I 3 phosphor coated on a 310 nm ultraviolet chip. The pc-LED device's electroluminescence spectra may be a good fit for the blood's absorption regions. Therefore, this work provides a facile method for the synthesis of novel lead-free metal halide CsCu 2 I 3 powder in eco-friendly solvents. In addition, the stable and efficient CsCu 2 I 3 powder shows promising exciting potential applications in photoluminescence and phototherapy fields.
✓ 已验证
DOI
Desalination and Water Treatment
·
2024
·
IF 1
Chaojie Cai,Xiaobin Lei,Xinzhen Zhao,Lin Wang,Jizhen Jia,Changkun Liu
ABSTRACT Modification of the active layer is an effective method to improve the separation performance of the thin-film composite forward osmosis (FO) membranes. In this paper, the dendrimer polyamidoamine (PAMAM) was in-situ integrated into the polyamide (PA) active layer via the interfacial polymerization. The separation performance results showed that the addition of PAMAM significantly improved the separation water flux of the modified FO membrane by 1.7 times, and the reverse salt flux was almost unchanged. In addition, the removal efficiency of the modified FO membrane for heavy metal ions was enhanced, with the rejection rates of various heavy metal ions all higher than 99.6%, and the corresponding water flux was also significantly enhanced. The PAMAM integrated with the active layer contained a large number of hydrophilic segments and terminal amine groups, which in situ enhanced the hydrophilicity and permeability of the active layer, and further improved the removal of heavy metal ions based on the coordination and electrostatic repulsion effects. The purpose of this paper is to provide a feasible way to improve the practical application performance of the FO membranes.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Fengchen Zhou,Lingyu Liu,Dongju Dai,Zhongning Huang,Yun Han,Jinchan Huang,Yatong Yang,Yankun Zou,Shoujie Guo,Xiaoyang Zhao,Pinjiang Li,Xiaolong Li,Junmin Nan
Black phosphorus (BP) has been highly regarded as a favourable candidate for fast-charging anode applications owing to its high theoretical capacity and advantageous charge–discharge platform. However, BP faces challenges related to compromised electrochemical performance resulting from an unstable solid-electrolyte interface (SEI) and substantial volumetric expansion. This study proposes the engineering of an inorganic-dense SEI on the surface of BP-C through the strategic incorporation of lithium fluoride (LiF). The presence of LiF in the system preferentially promotes LiPF 6 adsorption from the electrolyte, facilitating the in-situ formation of a lithium-enriched inorganic SEI film on the BP-C particulate surfaces. This strategic formation effectively mitigates subsequent electrolytic decomposition, accommodates volumetric expansion, and substantially improves the rate capability and cycling stability of the system. Consequently, the BP-LiF-C electrode demonstrates high initial coulombic efficiency of 86.8 % and maintains a steady capacity of 926.1 mAh g −1 over 700 cycles at 2000 mA g −1 . Moreover, when paired with a LiFePO 4 cathode, the full cell exhibits long cycling stability, retaining 98.6 % of its capacity after 500 cycles at 2000 mA g −1 , and performs at high rate. Therefore, utilising LiF to modulate the interfacial architecture of BP-based electrode composites provide notable guidance to enhance energy storage systems.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Lihua Cao,Huiling Li,Xiaolin Liu,Shuwu Liu,Lin Zhang,Wenhui Xu,Haoqi Yang,Haoqing Hou,Shuijian He,Yan Zhao,Shaohua Jiang
Rational design of electrode with hierarchical charge-transfer structure and good electronic conductivity is important to achieve high specific capacitance and energy density for supercapacitor, but it still remains a challenge. Herein, a nitrogen, sulfur co-doped pollen-derived carbon/graphene (PCG) composite with interconnected “sphere-in-layer” structure was fabricated, in which hierarchically pollen-derived carbon microspheres can serve as “porous spacers” to prevent the agglomeration of graphene nanosheets. The optimized PCG composite prepared with 0.5 wt% of graphene oxide (PCG-0.5) exhibited high specific capacitance (420 F g −1 at 1 A g −1 ), rate performance (280 F g −1 at 20 A g −1 ), and excellent cycling stability with 94% of capacitance retention after 10,000 cycles. The symmetrical device delivered a remarkable energy density of 31.3 Wh kg −1 in neutral medium. Moreover, density functional theory calculation revealed that PCG electrode possessed the accelerated charge transfer and enhanced electronic conductivity, thus ensuring a remarkable electrochemical performance. This work may afford an effective strategy for the development of biomass-derived carbon electrodes with novel charge-transfer structure toward supercapacitor applications.
✓ 已验证
DOI
高影响因子
Journal of the American Chemical Society
·
2019
·
IF 14.695
Fangfang Wei,Shiu-Lun Lai,Shunan Zhao,Maggie Ng,Mei-Yee Chan,Vivian Wing-Wah Yam,Keith Man-Chung Wong
A series of luminescent cyclometalated rhodium(III) complexes have been designed and prepared. The improved luminescence property is realized by the judicious choice of a strong σ-donor cyclometalating ligand with a lower-lying intraligand (IL) state that would raise the d–d excited state and introduction of a lower-lying emissive IL excited state. These complexes exhibit high thermal stability and considerable luminescence quantum yields as high as up to 0.65 in thin film, offering themselves as promising light-emitting materials in OLEDs. Respectable external quantum efficiencies of up to 12.2% and operational half-lifetimes of over 3000 h at 100 cd m–2 have been achieved. This work demonstrates a breakthrough as the first example of an efficient rhodium(III) emitter for OLED application and opens up a new avenue for diversifying the development of OLED materials with rhodium metal being utilized as phosphors.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）