RSC Advances
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2016
·Vol. 6
·期 106
·104724-104730
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IF 3.289
Jiangling He,Youling He,Yonghao Chen,Bingfu Lei,Haoran Zhang,Jianle Zhuang,Mingtao Zheng,Yingliang Liu
Here we introduce an approach to prepare air-stable blue-light-emitting carbon dots (B-CDs) grafted trisodium citrate dihydrate (SC) at 200 °C with yields up to 93.0%. After annealing for 20 minutes at 200 °C, these CDs/SC present yellow-light-emitting CDs/SC (Y-CDs/SC) under UV excitation. CDs grafted SC namely CDs/SC, which can be synthesized via one-step solvent thermal method. The luminescence origins of B-CDs/SCs and Y-CDs/SCs are from two different types of CDs, which can be embedded in solid matrices (SC) to realize solid state fluorescence of CD-based composites. By tuning the mass ratio of B-CDs/SC to Y-CDs/SC, the color of the luminescence can be systematically tailored from greenish-yellow (0.333, 0.358) to light-blue (0.243, 0.247), or by adjusting the excitation wavelength, the color of the luminescence can also be regulated. Moreover, both B-CDs/SC and Y-CDs/SC are favorably used in white light-emitting diodes (WLEDs).
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
JOURNAL OF FOOD ENGINEERING
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2022
·
IF 6.203
Limei Jin,Feng Zuo,Yu Gao,Shiyou Sui,Dongjie Zhang
Ultrafiltration is an effective method to improve the purity of pectin, but membrane fouling is an urgent problem to overcome. In this work, trisodium citrate, sodium caseinate and calcium caseinate were combined with ultrafiltration to separate and purify pectin extract. The molecular weight cutoff (MWCO) of the ultrafiltration membrane and the sodium citrate concentration were optimized using the color and clarity of the pectin extract as indices, and the influence of sodium citrate on the pectin particle size and zeta potential was further studied. Finally, the pectin extraction yield, some physicochemical indices, including galacturonic acid (Gal A) content, esterification degree, and ash content, and the surface morphology of the pectin particles were measured. The results showed that the ultrafiltration membrane fouling was effectively controlled and that the steady-state flux increased by 2-fold when the pectin extract was treated with a polyether sulfone (PES) UF membrane (100 kDa) in combination with sodium citrate at a concentration of 0.25 mg/ml. The pectin extraction yield increased to 16.4%, and the resulting pectin was a higher-ester refined pectin with a Gal A content of 89.7%, DE content of 77.42%, and ash content of 0.63%. The combination of sodium citrate and ultrafiltration was beneficial not only for improving the permeability and separation performance of the ultrafiltration process but also for providing an example of a monovalent salt as a precipitation agent.
研究领域:
食品科学
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生物工程
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
·
IF 20.2
Jiaqi Feng,Yanlin Wang,Guilin Li,Qizhou Xue,Min Wang,Xiaofu Sun,Shaojuan Zeng,Xiangping Zhang
Copper-based catalysts hold promise for electrochemical reduction of CO 2 to multi-carbon (C 2+ ) products, but achieving high selectivity and ampere-level current density remains challenging. A key hurdle lies in stabilizing Cu + species under reducing conditions, which are crucial for C-C coupling reaction. Herein, we modified Cu 2 O with sodium citrate through the coordination interaction between Cu atoms and carboxyl group. In situ spectroscopy analysis and theoretical studies revealed that the modification induced electron transfer from Cu 2 O to the citrate anion, stabilizing Cu + species under reduction conditions. Additionally, the presence of sodium citrate facilitated the hydrogenation of *CO to *CHO, with *CHO being more prone to C-C coupling reactions. Thereby, the as-prepared catalyst showed an C 2+ products Faradaic efficiency (FE) of 88.1 % at − 0.9 V vs reversible hydrogen electrode (RHE) with a C 2+ products partial current density ( j C2+ ) of 825.94 mA cm −2 and maintained over 80 % FE at − 1.1 V vs RHE with j C2+ of 1239.92 mA cm −2 . This work suggests that surface modification of Cu 2 O via carboxyl group is an effective strategy for altering the surface electronic structure of Cu 2 O and regulating the C-C coupling pathway, encouraging the exploration of more carboxyl-containing molecules for modifying copper-based catalysts to further enhance electrocatalytic performance.
研究领域:
电化学
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催化材料
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能源转换
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产品关联
DOI
高影响因子
DESALINATION
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2025
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IF 9.8
Liping Qiu,Shuai Gong,Qi Qiu,Xuewu Zhu,Daliang Xu,Xinwei Kang,Daoji Wu,Feihong Wang,Zhe Yang,Xiaoxiang Cheng
The elimination of natural organic matter (NOM) and organic micropollutants, while effectively preserving essential dietary minerals, constitutes a crucial objective during nanofiltration (NF) of healthy drinking water production. In this study, sodium citrate (SC), distinguished by its unique functional group, was selected as an aqueous phase additive to customize interfacial polymerization for multifunctional NF membranes. The resultant NF membranes exhibited optimal pore sizes, enhanced negative charge density, increased hydrophilicity, and improved separation selectivity. The optimized NF membrane (PIP-SC6) demonstrated a water permeance of 27.8 LMH bar −1 and achieved over 80 % NOM removal while maintaining calcium and magnesium retention below 10 %. Impressively, PIP-SC6 displayed >76.9 % rejection for four selected organic micropollutants while achieving double the permeance compared to commercial NF270. The effluent produced showed low levels of organic matter content while retaining beneficial mineral elements suitable for healthy drinking water consumption. Furthermore, PIP-SC6 exhibited double resistance to both organic fouling and gypsum fouling compared to NF270. This research offers a new approach to customizing highly selective NF membranes aimed at producing healthy drinking water.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-15
·
IF 15.7
Liu Lu,Li Xiurong,Chen Yongxian,Gao Junbin,Jiang Yuejun,Ye Yicheng,Wang Peng,Peng Fei,Tu Yingfeng
Uricase (UOx)-based gout treatments are generally limited due in part to the accumulation of H 2 O 2 in an arthrosis environment characterized by a sluggish metabolism. Here we develop a self-cascade nanomotor with high efficiency toward simultaneous uric acid (UA) degradation and H 2 O 2 elimination on the basis of UOx and sodium citrate loading in amine functionalized hollow mesoporous silica nanoparticles (AHMSNs). Due to the inherent asymmetry of AHMSNs, the developed nanomotors can be actuated by ionic diffusiophoresis induced by the enzymatic UA degradation, thus enlarging the diffusion range within the joint cavity. H 2 O 2 generated during UA decomposition can be simultaneously eliminated by the loaded sodium citrate, resulting in a considerable improvement in mammalian cell viability. In vivo studies display powerful therapeutic effect in gouty models using this self-cascade nanomotor system. These results present the potential of nanomotors as active therapeutic agents for gout, providing a perspective on the application of enzyme-driven micro/nanomotors.
研究领域:
医学
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纳米技术
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生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
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2020
·
IF 7.098
Weiwei Zhang,Hui-Jing Li,Liwei Chen,Jiani Sun,Xingyi Ma,Yunfei Li,Chao Liu,Xu Han,Boyi Pang,Yan-Chao Wu
An environment-friendly scaling–corrosion inhibitor composed of 10-methylacridinium iodide (MAI) and sodium citrate (SC) was developed, whose scale inhibition performance were studied through weight loss, electrochemical techniques , static tests and surface analysis techniques (SEM, SECM , XPS , XRD). The optimum mass ratio of MAI and SC corrosion inhibition was found to be 1:2, and the optimum mass ratio of scale inhibition was 1:3. The experimental results showed that MAI–SC mixture as mixed-type scaling–corrosion inhibitor with excellent corrosion ( η w = 92.7%) and scale inhibition performance ( η Ca = 98.3%). The electrochemical stability of the inhibitor film was investigated by chronoamperometry (CA). SEM and XRD simulations indicated that the MAI–SC mixture inhibitor can distort and disperse the crystal lattice of calcium carbonate without forming scale, and it plays a dominant role in the inhibition of calcite (110) surface growth. The structure-activity relationship between the molecule structure of the MAI–SC mixture and its scale–corrosion inhibition performance was discussed based on the quantum chemistry calculation.
研究领域:
材料科学
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化学工程
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环境科学
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产品关联
DOI
高影响因子
CHEMOSPHERE
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2022
·
IF 8.943
Yue Gao,Yanan Xue,Jing Ji,Kai Zhen,Xuejiao Tang,Peng Zhang,Cuiping Wang,Hongwen Sun
The remediation for industrial site soil has attracted public concerns because of the hazardous and hydrophobic properties of organic pollutants existed in the soil. The persulfate oxidation activated by Fe 2+ chelated with sodium citrate (PS/Fe 2+ /SC) was used to remediate different types of industrial site soils in the present study. The maximum removal rates of Σ16 PAHs in the Nanjing site soil (NJS) and Hefei site soil (HFS) were 73.6% and 85.8% after the second-stage oxidation, respectively. The late oxidation stages couldn't enhance the degradation efficiency of PAHs due to the increase of high crystalline Fe mineral phases both in the NJS and HFS, which significantly decreased the Fe 2+ /Fe 3+ recycle and further inhibited the reactive oxygen species production during the remediation. The remediation using PS/Fe 2+ /SC could change the soil physicochemical properties , such as the functional groups, specific surface area (SSA), total pore volume (TPV) and some UV spectral parameters of soil particles. Additionally, the oxidation of PS/Fe 2+ /SC also altered the composition of soil dissolve organic matters, especially the fulvic acid , which further affected the Fe 2+ oxidation. The study mainly discloses the mechanism of limitation using persulfate oxidation activated by Fe materials at late oxidation stage.
研究领域:
环境科学
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土壤学
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污染控制
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产品关联
DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
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2023
·
IF 11.4
Kaikai Gao,Hanxing Wang,Yu Chen,Jie Chu,Junhua Zhang
Currently, the production of xylo -oligosaccharides (XOS) from lignocelluloses by chelating system hydrolysis has not been investigated. Herein, iron (III) chloride/sodium citrate (IC/SC) chelating system hydrolysis and xylanase hydrolysis were used to produce XOS from poplar. Then, the delignification of IC/SC-hydrolyzed poplar was performed by p -toluenesulfonic acid ( p -TsOH) pretreatment to increase the accessibility of cellulase. The results demonstrated that 42.3% of XOS with an extremely low by-product (xylose/XOS = 0.11) was produced from poplar by 50 mM IC/SC hydrolysis (molar ratio of 1:1, 170 °C, 60 min) and xylanase hydrolysis. The second step IC/SC hydrolysis and xylanase hydrolysis of poplar increased the yield of XOS to 51.3%. Finally, the glucose yield of p -TsOH-pretreated poplar (60% p -TsOH, 70 °C, 30 min) was greatly increased from 37.5% to 83.8% by cellulase hydrolysis with Tween 80 addition. The novel strategy proposed in this work was feasible for XOS and monosaccharides production from poplar.
研究领域:
生物化学
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生物质能工程
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 17
·14329-14334
·
IF 3.289
Juanjuan Li,Yang Liu,Ruitao Cha,Bei Ran,Kaiwen Mou,Huashan Wang,Qian Xie,Jiashu Sun,Xingyu Jiang
This paper reports a new synthesis method to control the size of iron oxide nanoparticles (IONs) by adding sodium citrate during fabrication to obtain sodium citrate-modified iron oxide nanoparticles (SCIONs). The method was simpler and more effective than the synthetic process of ferumoxytol, a commercial nano-sized iron agent. Compared with other iron agents which were prepared using branched polymers to form a carbohydrate shell, our SCIONs were tightly bound within a nonionic carbohydrate matrix. The physicochemical properties of SCIONs were characterized, and the results showed that these nanoparticles could be stably stored in water for six months without sedimentation. The cytotoxicity evaluation of SCIONs indicated that they were biocompatible to cells. The effect of iron supply by SCIONs was assessed by measuring the retention of iron ions in the serum, and the results demonstrated that the synthesized SCIONs are very promising for intravenous iron supply.
研究领域:
材料科学
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医学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2013
·
IF 2.206
Lingfeng Wu,Weiwei Wu,Xiaolian Jing,Jiale Huang,Daohua Sun,Tareque Odoom-Wubah,Hongyu Liu,Haitao Wang,Qingbiao Li
The synthesis and applications of anisotropic nanostructures have attracted much attention in modern nanotechnology. Recently, biosynthesis has been demonstrated to be a viable green alternative to traditional chemical and physical methods for synthesizing metal nanostructures. Herein, we developed a new, green one-pot synthetic protocol in which silver nanoflowers (Ag NFs) with three-dimensional structures were synthesized by Canarium album foliar broths in the presence of trisodium citrate (TSC) at room temperature. The effects of silver nitrate, TSC, and foliar broths on these synthesis processes were investigated to determine the optimum synthesis conditions. Further exploration of the formation mechanism of Ag NFs showed that both the biomolecules and TSC played very important roles. The improved insight into the specific roles of the bioprotective components and the controlled synthesizing ability are expected to help explain the formation mechanism of this interesting nanostructure that exhibited an excellent performance in surface-enhanced Raman scattering.
研究领域:
纳米技术
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生物合成
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材料科学
·
光谱学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
·
IF 5.2
Junjun Tan,Tao Pan,Ruojiao Su,Miaomiao Wang,Yuwei Jiang
Precise control of the size, morphology and surface hydrophilicity of HA nanocrystals is an important prerequisite for the realization of relevant applications, especially biologically relevant ones. Although sodium oleate-assisted hydrothermal methods have received considerable attention due to their impressive synthesis quality and extremely wide aspect ratio tunability. However, the synthesized nanocrystals are usually hydrophobic due to oleic acid encapsulation, which greatly limits their wide application in biomedical fields. In view of this, we have established a robust ligand exchange strategy with sodium citrate as the exchange ligand and a mixture of water and ethanol as the exchange environment. The ligand exchange reaction requires only 5 min of stirring at 25 °C. DLS and zeta potential results show that the ligand-exchanged HA nanocrystals are highly negatively charged in water and dispersed as individual particles in water. TG and IR results showed that the oleic acid ligands on the surface of the nanocrystals were completely replaced by citric acid ligands. TEM images showed no change in the size and morphology of the nanocrystals before and after ligand exchange. Moreover, the colloidal stability of the ligand-exchanged HA nanocrystals in water could be quickly recovered in a few seconds even after freeze-drying into powder. The success of ligand exchange is mainly attributed to the fact that sodium citrate complexes calcium ions more strongly than sodium oleate , as well as the addition of ethanol eliminates the oil-water interface providing the basis for the approach of sodium citrate molecules to HA nanocrystals. This strategy undoubtedly bridges the gap that oleic acid-coated HA nanocrystals can be quickly and efficiently transferred to water, allowing HA nanocrystals to be used in bio-related applications without any obstacles.
研究领域:
材料科学
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2015
·
IF 1.955
Xiulan Hu,Yanqiu Xu,Haikui Zhu,Fengnan Hua,Shoufeng Zhu
Square-like bismuth oxychloride (BiOCl) nanoplates with high exposed {001} facets were successfully synthesized through a facile hydrothermal process in the presence of sodium citrate . Citric anions reduce BiOCl nanoplate size and lead to high intensity ratio of (001)–(102) by selectively absorbing on the {001} facets of BiOCl nanoparticles or nanoplates. Size of BiOCl nanoplates decrease to about 200 nm when 1.5 mmol sodium citrate was added. Thickness of BiOCl nanoplates also decreases from 100 nm to about 45 nm with increasing sodium citrate amounts. Diffraction peak intensity ratio of (001)–(102) of BiOCl nanopaltes is up to 0.93 with the adding of 1.5 mmol sodium citrate. As-obtained BiOCl nanoplates show a higher photocatalytic activity for degrading methyl orange (MO) than that prepared without sodium citrate under simulated sunlight irradiation.
研究领域:
材料化学
·
纳米科学
·
光催化
·
无机合成
·
环境功能材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）