WATER RESEARCH
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2024
·
IF 11.4
Jie Liu,Kexin Zhang,Xin Liu,Qiyong Xu,Weiyi Li
Despite being recognized as a promising technique for treating high salinity water, membrane distillation (MD) has been plagued by the scaling of sparingly soluble salts. The growth of crystals can not only create additional resistance to evaporating water at the feed-membrane interface, but also alter the hydrophobic network to bridge the feed and distillate (i.e., result in the phenomenon of wetting). When recognizing the uncertain behaviors of calcium sulfate (CaSO 4 ) scaling in MD, this study was motivated to ascertain whether the crystal-membrane interactions could be dependent on the variation in crystalline morphology. In particular, optical coherence tomography (OCT) was employed to characterize the scaling-induced wetting via a direct-observation-through-the-membrane (DOTM) mode, which mitigated the effects of developing an external scaling layer on resolving the crystal-membrane interactions. The improved in-situ characterization suggests that the crystalline morphology of CaSO 4 could be effectively regulated by varying the stoichiometry of crystallizing ions; the richness of calcium in the aqueous environment for crystallization would be in favor of weakening the crystal-membrane interactions. The stoichiometry-dependent growth of CaSO 4 crystals can be exploited to develop an effective strategy for preventing the hydrophobic network from being wetted or irreversibly damaged.
研究领域:
环境科学
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膜科学与技术
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化学工程
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水处理技术
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材料表征
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结晶过程
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DOI
高影响因子
Horticultural Plant Journal
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2017
·Vol. 3
·期 4
·165-171
·
IF 0
Yanhui ZHANG,Peiying LIU,Qianqian KONG,Shiyan XING,Xiaojing LIU,Limin SUN
Flavonoids and terpene trilactones, especially, ginkgo flavonglycosides, ginkgolides and bilobalides in leaves of ginkgo trees, need to be studied for effective application of these active components with high medical and health-care values. This study was aimed to provide scientific bases for genealogies selection and harvest season confirmation for Ginkgo biloba . A high-performance liquid chromatographic method (HPLC-ELSD) was developed to determine the contents of terpene trilactone and flavonoid of 36 ancient G. biloba genealogies from 19 provinces in China. The study indicated that the content gradually increased from April to August, and thereafter declined. Analysis of variance indicated that the contents of terpene trilactone, flavonoids, and their respective components had significant difference among 36 genealogies. The cluster analysis showed that No. 72 (Xing'an, Guangxi), No. 58 (Youyang, Chongqing), No. 82 (Rugao, Jiangsu), No. 123 (Huixian, Gansu), No. 99 (Dujun, Guizhou), No. 10 (Tai'an, Shandong) and No. 133 (Mentougou, Beijing) genealogies have higher content of terpene trilactone and flavonoid. These results can help us to select superior variety containing high content of terpene trilactone and flavonoid.
研究领域:
植物化学
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药用植物学
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天然产物化学
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林木遗传育种
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药物代谢
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DOI
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
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2020
·
IF 2.606
Sen Shan,Yuanzhi Qi,Jiwei Tian,Xuchen Wang,Chunle Luo,Chun Zhou,Xiao-Hua Zhang,Yu Xin,Yonghong Wang
The Mariana Trench in the western North Pacific (NP) contains the deepest (11,000 m) point in the ocean and thus remains the least explored environment. Carbon cycling in the deep Mariana Trench is largely unknown and remains a curious mystery. Here, we report radiocarbon (Δ 14 C) and stable carbon isotope (δ 13 C) compositions of dissolved inorganic and organic carbon (DIC and DOC) and sinking particulate organic carbon (POC) for samples collected at 2000 m, 4000 m and 6000 m from the Mariana Trench in the western NP. DOC had much lower Δ 14 C values (−189‰ to −538‰) than DIC (38‰ to −236‰) and POC (11‰–38‰) at the same depths, indicating the different cycling processes and time scales of different carbon pools. The 14 C ages of DOC were approximately 1700 years and 4400 years older than those of DIC in the surface (2 m) and deep (10,000 m) waters of the Mariana Trench. Both DOC and DIC Δ 14 C values at hadal depths (>6000 m) in the trench are comparable to values at other sites in the deep NP, suggesting that water movement and mixing at hadal depths in the Mariana Trench are active and follow the deep-water circulation patterns of the NP. POC fluxes at the three deep depths showed large variations, but their modern Δ 14 C values indicate that the effective biological pump that drives fresh surface-produced particles to sink rapidly to deep depths in the trench could provide essential food sources for microbial and benthic communities living in an extremely harsh environment of the Mariana Trench.
研究领域:
海洋生物地球化学
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深海微生物学
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同位素地球化学
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碳循环研究
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深渊生态学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Fanyong Yan,Chunhui Yi,Zhonghua Hao,Yao Wang,Ming Xu,Keqing Zhou,Fangyu Shi,Jinxia Xu
Solid-state fluorescent and phosphorescent carbon dots (CDs) have widespread applications, with difficulties in obtainment. In this study, solid-state carbon dots (SCDs) emitting green, yellow, and orange fluorescence were fabricated using urea and phthalic acid as precursors. The band gap size was systematically controlled by varying the ratio of raw material nitrogen. By changing the temperature during synthesis, the phosphorescent properties of SCDs were adjusted, and the longest lifetime possessed 156.8 ms of orange phosphorescence. CDs were attached to the crystals of phthalimide , allowing a certain spacing between the particles and suppressing the phenomenon of aggregation-induced quenching (ACQ), thus obtaining solid-state fluorescence. Detailed characterization and density flooding theory (DFT) calculations further indicate that the reduction of the conjugation domain leads to the redshift of the solid-state fluorescence. The phosphorescence appearance is attributed to the presence of crystals that inhibit the nonradiative relaxation channels, and N elements that promote spin-orbit coupling interactions. Based on their special luminescent properties, they have been successfully applied in the fabrication of (0.38,0.54), (0.44,0.54) and (0.51, 0.47) light-emitting diodes, as well as in the production of secure anti-counterfeit cryptographic inks and their successful application in digital encryption.
研究领域:
材料科学
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纳米技术
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光电子学
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分析化学
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生物医学工程
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药物递送
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分子影像
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DOI
高影响因子
CRYSTENGCOMM
·
2019
·Vol. 21
·期 19
·3064-3073
·
IF 3.382
Yu Song,Ling-Yang Wang,Fang Liu,Yan-Tuan Li,Zhi-Yong Wu,Cui-Wei Yan
With the objective to improve the physicochemical properties and optimize pharmacokinetic performances of acetazolamide (ACA), a new zwitterionic cocrystal of ACA with proline (PRO), namely, ACA-PRO, was synthesized and characterized. The single-crystal X-ray diffraction analysis revealed that the cocrystal has a component ratio of 1 : 1 and is dominated by a three dimensional hydrogen bonding supramolecular structure. The water solubility and permeability of ACA in the cocrystal were simultaneously enhanced compared with pure ACA in physiological pH environments. The in vivo pharmacokinetic evaluation indicated that the relative bioavailability of ACA from the cocrystal was enhanced by 2.68-fold. The present investigation not only provides an alternative approach for optimizing physicochemical and pharmacokinetic properties of BCS class-IV drugs without changing the molecular structures and intrinsic bioactivities, but also enriches the current understanding of the structures of zwitterionic cocrystals and their behaviors in vitro and in vivo.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121201
·
IF 7.2
Yijia Ran,Kehan Yang,Zhihao He,Xinrong Wang,Huiqin Chen,Chengyi Huang,Junzhuo Cai
Tetracycline antibiotics (TCs) pose escalating environmental threats due to their persistence and resistance gene dissemination. Herein, this research pioneered a waste-derived structured electrode by immobilizing polycrystalline waste steel rust (WSR) on honeycomb activated carbon (HAC@WSR) as a third-electrode for flow-through TCs removal. Under the optimal conditions of cell voltage 10 V, initial solution pH 7.5 ± 0.2, and flow rate 5 mL min −1 , the system achieved a removal rate ( k obs ) of 0.055 min −1 , approximately double that of commercial Fe powder, FeO, or Fe 3 O 4 with k obs of 0.025–0.032 min −1 . Integrated analyses reveal dual enhancement mechanisms: (1) Electric-field-promoted adsorption via WSR-mediated chemisorption (HAC@WSR exhibits an equilibrium adsorption capacity of 118.46 mg g −1 for tetracycline hydrochloride (TCH), 2.02 times higher than static adsorption), where adsorbed TCs self-optimize electrode activity; (2) Multivalent iron-triggered generation of diverse radicals (•OH, •O 2 - , H*) at the electrode surface, accelerating ring-opening mineralisation with negligible aquatic toxicity in final products. Under continuous operation, the three-dimensional electrochemical system (3DES) achieved about 95 % removal for TCs, with effluent TCs concentrations remained below 0.1 mg L −1 . Compared with the two-dimensional electrochemical system (2DES) without HAC@WSR, the 3DES exhibited a 40.6 % enhancement in TCH removal efficiency. Under 360 min of continuous flow operation, the 3DES maintained a removal efficiency of > 90 % for TCs with negligible iron leaching, while the 2DES had a breakdown. Additionally, the 3DES significantly improving wastewater’s biodegradability (BOD 5 /COD increased from 0.15 to 0.44), enabling practical integration as a biological pretreatment. This work establishes a "waste-to-clean-water" paradigm aligned with circular economy principles, simultaneously addressing metal waste recycling and antibiotic contamination.
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高影响因子
EUROPEAN JOURNAL OF MASS SPECTROMETRY
·
2015
·
IF 1
Xiaoping Zhang,Kezhi Jiang,Xingfeng Bai,Huiqing Lv,Zuguang Li,Maw-Rong Lee
Electrospray ionization mass spectrometry (ESI-MS) analyses of 2-(1,2,4-triazole-1-yl)-6-methyl-3-quinolinecarboxaldehyde were carried out by using an ion trap mass spectrometer in a positive-ion mode. Interestingly, several unusual [M + 15]+, [M + 33]+ and [M + 47]+ ions were observed with a high abundance in the ESI-MS spectrum when methanol was used as the ESI solvent. However, only the protonated molecule was obtained with acetonitrile as the ESI solvent. These unusual ions have been proposed as the intermediates of an aldolization reaction occurring in the ESI source, which have been validated by a tandem mass spectrometry experiment, high-performance liquid chromatography/mass spectrometry analysis and theoretical calculations. A full understanding of this reaction can contribute to the avoidance of analysis errors in the ESI-MS analysis of unknown heteroaromatic aldehydes.
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高影响因子
DESALINATION
·
2026
·
IF 9.8
Qin Zheng,Meng-ran Xu,Dai-feng Song,Wen-shi Liu,Hao-Ran Zuo,Ming Duan
Forward osmosis (FO) offers a promising wastewater treatment option with energy efficiency and lower membrane fouling than pressure-driven processes. However, its practical application remains constrained by operational temperature limitations, particularly in high-temperature industrial dyeing wastewater treatment. Inspired by the muscle that effectively controls the movement of seashells, this study employs a homogeneous catalyst to rapidly modify polyacrylonitrile support layers using bridging molecules that mimic such structures. During interfacial polymerization, one end of the molecular bridge is covalently anchored to the support layer and the other to the active layer, thereby enhancing interfacial adhesion and yielding a thermally stable FO membrane. After anchoring, the glass transition temperature ( T g ) of the polyamide active layer on the modified support increases to 90.08 °C. Utilizing 1 mol/L NaCl as the draw solution and deionized water (DI) as the feed solution, the J w of the FO membrane increased from 33.6 ± 3.9 (L∙m −2 ∙h −1 ) at 25 °C to 110.3 ± 9.98 (L∙m −2 ∙h −1 ) at 90 °C under AL-DS mode. The reverse salt flux ratio ( J s / J w ) remained nearly constant at 0.26 (g∙L −1 ). In addition, the FO membranes also exhibit superior anti-fouling properties. In a 48 h concentration experiment using actual industrial dyeing wastewater, the membranes sustained a stable J w of 20.0 ± 0.92 (L∙m −2 ∙h −1 ). Not only 83 % of the industrial dyeing wastewater was recovered, but also the contaminants in the wastewater were forced to aggregate by external concentration polarization. This study proves FO membrane feasibility in harsh industries and presents a scalable route to high-performance membranes for high-temperature wastewater.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Mengxiang Liu,Mengle Li,Ziqian Xu,Miao Li,Jiale Fan,Yu Zhang,Kaibo Yu,Zihan Kong,Tao Zhang,Xiaoxiao Huang
Interfacial polarization tuning via BO x F y modification and in situ N-doped carbon • Synergistic interfacial polarization for dielectric response and impedance matching • Minimum reflection loss of −58.97 dB with a bandwidth of 4.24 GHz Pristine Ti 3 C 2 T x MXene generally suffers from severe impedance mismatch arising from its excessive electrical conductivity, which fundamentally limits efficient electromagnetic wave (EMW) attenuation. Herein, an interfacial modulation strategy is proposed by integrating fluorinated boron oxide (BO x F y ) nanophases and in situ derived N-doped carbon into a Ti 3 C 2 T x MXene framework through a hydrothermal process. Distinct from conventional boron-containing modification, the introduced BO x F y species provide abundant polarization-active sites and tailor the local interfacial environment through the coexistence of B O and B F coordination, thereby improving dielectric polarization and impedance matching. Meanwhile, the in situ formed N-doped carbon establishes defect-rich conductive networks, enabling balanced conductive loss and dipolar polarization. More importantly, the synergistic coupling among BO x F y nanophases, N-doped carbon, and Ti 3 C 2 T x MXene constructs abundant heterogeneous interfaces and multiscale conductive pathways, facilitating interfacial polarization and electromagnetic energy dissipation. As a result, the optimized BN(1:1)-MXene achieves a minimum reflection loss of −58.97 dB at 1.77 mm and an effective absorption bandwidth of 4.24 GHz. Furthermore, radar cross-section simulations demonstrate remarkable electromagnetic scattering suppression with a maximum reduction of 32.05 dB m 2 at normal incidence. This work highlights the synergistic effects of interfacial modulation on electromagnetic attenuation, offering a promising strategy for high-performance MXene-based EMW absorbers. Download: Download high-res image (320KB) Download: Download full-size image
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高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 7
·458
·
IF 5.4
Zhou Yaqiu,Zhu Linlian,Li Mengwei,Yao Yi,Su Mengjie,Wu Zengqiang,Yu Chunmei
A flexible electrochemical sensing platform on the basis of carbon cloth modified with zeolite imidazole framework-67/carbon nanotubes nanocomposite with catalase-like activity was developed for in situ and real-time tracking of H 2 O 2 produced by living cells. The obtained sensor exhibits excellent electrochemical performance for detecting H 2 O 2 with a broad linear response range from 1 µM to 5.2 mM and a detection limit of 0.3 µM. Owing to the favorable biocompatibility and mechanical stability of the prepared electrodes, living cells can be proliferated well on their surfaces, thereby achieving in situ and real-time profiling of endogenous H 2 O 2 flux from normal and cancer cells. This work proposed a novel sensing platform for extracellular analysis, providing an innovative tool for the dynamic monitoring of biomarkers generated by cellular metabolism in cell biology. Graphical abstract The alternative text for this image may have been generated using AI.
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PubMed
高影响因子
INTERNATIONAL DAIRY JOURNAL
·
2026
·
IF 3.1
Xia Dan,Eng Huan Hau,Jiali Chen,Pan Yang,Jiaqi Jiang,Zizhen Huang,Zhiwen Li,Shanlian He,Qingkun Zeng,Ling Li
The first comprehensive oligosaccharide profiling in buffalo milk. • Buffalo milk has great diversity and 3′-FL increased during lactation. • Key oligosaccharides correlate with milk protein and fat content. • Thermal processing shows no effect on oligosaccharide content. Milk oligosaccharides (MOs) have attracted widespread attention owing to their diverse biological activities. In this study, an integrated strategy combining untargeted UPLC-Q-Orbitrap MS/MS profiling and targeted triple-quadrupole LC-MS/MS quantification was adopted to characterize the milk oligosaccharide profiles of Guangxi buffalo and Holstein cattle. A total of 38 oligosaccharide features were putatively annotated, and buffalo milk was found to have a richer variety of MOs than Holstein milk. Furthermore, 28 differentially abundant MOs were identified, 23 of which were more abundant in buffalo milk, further confirming the higher oligosaccharide diversity of buffalo milk. Subsequently, a fully validated LC-MS/MS method was established for the quantification of seven core differential MOs, and their dynamic changes across lactation stages, breed differences, and correlations with conventional milk components were systematically investigated. The results showed that 3′-sialyl-N-acetyllactosamine was a characteristic oligosaccharide in colostrum; the content of 3′-fucosyllactose increased gradually with lactation progression, while most other oligosaccharides exhibited a decreasing trend; and 6′-sialyllactose and lacto-N-neotetraose showed significant breed differences in mature milk. Additionally, significant correlations were observed between specific oligosaccharides and the contents of milk protein and milk fat, and thermal processing had no significant effect on the levels of target MOs. These findings provide a scientific basis for the quality improvement of buffalo milk and the development of functional dairy products. Download: Download high-res image (239KB) Download: Download full-size image
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Onyeagoro Robinson Uzochukwu,Lin Chen,Xuanxing Chen,Muhaned Maysrah,Liang Zhu
Ammonia and lithium recovery are increasingly important in resource management. This study developed a three-compartment membrane distillation (MD) module integrated into an electricity-assisted system for ammonia stripping and lithium precipitation. Key operational parameters (feed concentration, temperature, pH, and applied voltage) were systematically investigated. At 0.5000 mol dm −3 feed concentration, the system achieved 60.20% ammonia removal (1843 mg L −1 ), 1.436 × 10 4 mg L −1 ammonia recovered in the acid compartment, and 2.420 g Li 2 CO 3 precipitated on the feed side. At 75 °C, ammonia removal increased to 92.02% (342.5 mg L −1 ) with 1.389 × 10 4 mg L −1 recovered, 1.63-fold lower than the optimal concentration, and 1.950 g of Li 2 CO 3 recovered. pH exerted the strongest influence: at pH 12, ammonia removal reached 95.40% (163.0 mg L −1 ) with recovery of 1.560 × 10 4 mg L −1 , 5× the initial concentration and the highest among all parameters, though lithium recovery decreased to 1.810 g Li 2 CO 3 , confirming elevated pH's critical role in ammonia volatilisation. Continuous direct current at 2.5 V further enhanced performance, achieving 97.17% ammonia removal (121.8 mg L −1 ) and 1.807 × 10 4 mg L −1 recovery while maintaining 2.420 g Li 2 CO 3 recovery. An XGBoost model accurately predicted key variables across compartments. This study demonstrates the potential for efficient, dual-product recovery from complex aqueous streams.
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高影响因子
危险品化学品经营许可证（带存储）