SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Rui Ma,Xiaoxiang Cheng,Xinsheng Luo,Tao Yang,Daoji Wu,Heng Liang
Herein, sodium hypochlorite (NaClO) and peroxomonosulfate (PMS) were systematically compared in enhancing vacuum ultraviolet (VUV) oxidation for alleviating ultrafiltration membrane fouling of effluent organic matter. Results indicated that VUV/NaClO pre-treatment exhibited significantly better performance than VUV/PMS, with the irreversible fouling resistance reduced by 64 %. Simultaneously, 96 % of fluorescent substances were removed by VUV/NaClO, and an apparent decrease in surface deposits was observed, with membrane pores exposed and clearly visible. The calculation results through the extended Derjaguin-Landau-Verwey-Overbeek theory indicated that the enhanced hydrophilicity of pollutants reduced the tendency of pollutants to adhere to the membrane surface, leading to the weakening of membrane fouling degree. In the VUV/PMS process, HO • and SO 4 •– were detected with steady-state concentrations of 8.55 × 10 -14 and 1.53 × 10 -13 M. By contrast, the VUV/NaClO system generated HO • , Cl • , ClO • , and Cl 2 •– with steady-state concentrations of 1.15 × 10 -13 , 8.79 × 10 -14 , 7.30 × 10 -13 and 1.50 × 10 -13 M. In conclusion, VUV/NaClO pre-treatment demonstrated high efficiency and significant potential in improving water quality and decreasing membrane fouling in secondary effluent treatment.
✓ 已验证
产品关联
DOI
高影响因子
Horticultural Plant Journal
·
2025
·
IF 6.2
Wenyi Duan,Zhenyu Yao,Chengkui Qiao,Junren Meng,Shihang Sun,Lei Pan,Liang Niu,Guochao Cui,Zhiqiang Wang,Wenfang Zeng
Volatile organic compounds (VOCs) are the main chemical compounds that determine the characteristic aroma and flavor of fruit. In this study, we identified a total of 97 VOCs, including 5 C6 compounds, 12 aldehydes, 4 alcohols, 10 esters, 13 lactones, 18 terpenes, 8 norisoprenoids, 8 ketones, 3 hydrocarbons, 8 phenylalanine derivates, and 8 other compounds, in 60 peach cultivars using headspace solid-phase micro-extraction (HS-SPME) combined with gas chromatography-mass spectrophotometry (GC-MS). A wide range of VOCs were detected in these germplasm resources with respect to both quantity and concentration. Correlation analysis with different physiological traits demonstrated that the genetic background exerts a significant influence on the composition and content of VOCs among peach cultivars. For example, the content of norisoprenoid was significantly lower in yellow-fleshed peach than in white-fleshed peach, and lactones were almost undetectable in stony hard peach. Among the 97 VOCs, 26 exhibited odor activity values (OAVs) exceeding 1, suggesting that these compounds act as key odorants in the peach VOC composition. Moreover, six structural genes associated with the synthesis of γ-decalactone and ( Z )-3-hexenyl acetate and five genes linked to aldehyde and 1-octen-3-one biosynthesis were identified through weighted gene co-expression network analysis (WGCNA). Additionally, 15 transcription factors (TFs) were identified as potentially regulating VOC synthesis. Overall, these data provide insight into the factors contributing to the differences in aroma qualities among peach cultivars, which can help to promote the development of peach breeding.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shizong Wang,Jun Hu,Jianlong Wang
This study investigates the treatment performance of saline wastewater using electron beam radiation (EB), comparing it with ozonation. The results indicate that chloride ions (Cl - ) inhibited the mineralization of all the organic pollutants, and the inhibition presented slightly enhancement with the increase of Cl - concentration. Within pH ranging from 3 to 9, Cl - had a minimal impact on the removal of organic pollutants. At pH 3.0 and pH 9.0, Cl - promoted the phenol mineralization when Cl - concentration was 1 and 5 g/L, while decreased the mineralization when Cl - was 10 g/L. Sulfate ions (SO 4 2- ) had no significant effect on removal and mineralization. Similarly, nitrate ions (NO 3 – ) had minor effect on the removal. At 1, 2 and 5 kGy, NO 3 – even enhanced the mineralization. In comparison, Cl - , SO 4 2- , and NO 3 – also had minor effect on the removal of organic pollutants by ozonation, but predominantly inhibited mineralization, except for benzoic acid, where Cl - promoted it. Mechanistic analysis suggests that inorganic ions influenced the types and utilization efficiencies of reactive species during EB, ultimately affecting pollutant degradation. While the effect of inorganic anions on ozonation was not only reflected in the reactive species, but also in the changes in solution ionic strength that further decrease the mineralization. Overall, EB radiation demonstrated superior COD removal and cost-effectiveness compared to ozonation, presenting a viable alternative for saline wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Food Measurement and Characterization
·
2024
·
IF 2.9
Chen Zhiyan,Ye Xiangzhen,Dhamodharan A.,Zhou Tianhao,Gao Yajun,Xie Mingjiang
Excessive nitrite ( \(\:{\text{NO}}_{\text{2}}^{-}\) ) addition poses a significant threat to food safety. Thus, it is desirable to construct a selective and dependable electrochemical sensor for the quantitative measurement of \(\:{\text{NO}}_{\text{2}}^{-}\) . In this study, an electrochemical sensor using nitrogen-rich porous carbon (NPC) derived from graphitic carbon nitride (g-C 3 N 4 ) was developed for the quantitative detection of \(\:{\text{NO}}_{\text{2}}^{-}\) . The NPC synthesis involved a two-step process, namely polymerization and carbonization. The carefully designed polymerization method and optimal carbonization condition yielded an NPC material with a relatively high surface area of 593.36 m²·g⁻¹. Notably, NPC nanomaterials exhibited a high nitrogen content of 19.8%, comprising various nitrogen species (pyridinic N, pyrrolic N, and oxidized N) that are fully faradaic-active N species, leading to enhanced electrochemical properties and sensitivity. The calibration plot exhibited linearity within the concentration range of 2-3410 µM, LOD of 0.11 µM, a sensitivity of 11.32 µA·µM − 1 cm − 2 and further showed excellent adaptability in real sample analysis. This innovative way of creating electrochemical sensors from nitrogen-rich porous carbon materials broadens the scope of electroanalysis and provides a beneficial means of guaranteeing food safety.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Ling Tan,Yufei Huang,Wei Mao,Xiayi Hu,Yangqiang Huang,Hao Chen,Xiao Luo
Diphenyl carbonate (DPC) is a crucial organic chemical intermediate that is widely applied for the synthesis of polycarbonate. The process of transesterification of dimethyl carbonate (DMC) and phenol to produce DPC is promising and is in line with the requirements of green transitions and raw material sustainability. In this work, anatase-layered titanium dioxide (A-TiO2) was prepared and applied for the efficient transesterification of DMC and phenol to synthesize DPC with 10.5% phenol conversion and 87.9% DPC selectivity. The high activity and selectivity of transesterification over A-TiO2 were ascribed via characterizations to the tetracoordinate Ti species and Lewis acid–base sites on the catalyst surface. We further studied the deactivation mechanism of this kind of A-TiO2, and it was found that Ti leaching and the deposition of organic compounds onto the catalyst surface were the major reasons for deactivation during transesterification. This study provides some insights into the design of highly active and selective catalysts for transesterification reactions.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Fangxin Deng,Shoushu Wei,Xiangwei Zhang,Yanping Zhu,Qingze Chen,Zhiyi Deng,Runliang Zhu
A novel single-atom-like Co/Fe catalyst (i.e., Co/Fe-N-C) was synthesized by pyrolysis of a Zn/Co/Fe zeolitic imidazolate framework, and applied in peroxydisulfate (PDS) activation for removal of organic contaminants from wastewater. The isolated diatomic metal-nitrogen sites were detected by X-ray adsorption fine-structure. The degradation of four contaminants (i.e., phenol, bisphenol A, 2,4-dichlorophenol, and N-methyl-2-pyrrolidone) with a concentration of 100 mg/L could be degraded separately within 20 min by the Co/Fe-N-C system with 10 mmol/L of PDS, 0.5 g/L of catalyst dosage, and initial pH of 3. Besides, 79.2 % of phenol could be mineralized in 120 min, and the turn-over frequency value of the catalyst was calculated to be 27.17 min −1 , which was higher than the commonly reported homogeneous PS-AOPs. Moreover, the Co/Fe-N-C exhibited high stability (mineralization rate over 70 % after 5 cycles), a wide initial pH range (3−9), and high catalytic performance at 5–20 mmol/L of PDS concentrations. Based on the analysis of radical scavenging experiments and electron spin resonance spectra, the radical and non-radical pathways for PDS activation were proved in the system, and the contribution of phenol degradation by each pathway was clarified.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMISTRY
·
2024
·Vol. 42
·期 24
·3201-3210
·
IF 5.5
Zhou Zhong,Xiang-Ji Liu,Li Ma,Zi-Jian Zhan,Yu-Xin Yuan,Heng-Jian Zhang,Feng-Ying Cai,Yi-Dong Hou,Jian Lü,Rong Cao
Comprehensive Summary Electron transfer is an important way to activate persulfate. Currently, the electrons for persulfate activation mainly originate from organic contaminants or the catalyst itself, which can lead to selective activation of persulfate or oxidation of the catalyst, respectively, and thus become a bottleneck restricting its application. In this work, Cu−doped FeVO 4 (Cu−FVO) was prepared, and the results showed that Cu doping can significantly improve the photocatalytic activity and stability of FVO for peroxymonosulfate (PMS) activation. The optimized Cu−FVO/PMS/light system exhibited a high BPA degradation rate that is 4.3 times higher than that of the FVO/PMS/light. This system manifested a broad applicability to various organic contaminants even with complex matrix. Photoelectrochemical analysis and DFT theoretical calculations revealed that Cu doping boosted the photogenerated charge separation and the adsorption of PMS on FVO. Furthermore, Cu doping led to the establishment of an electron transfer channel from Cu−FVO to PMS, through which photogenerated electrons achieved an efficient PMS activation. Meanwhile, holes were consumed by organic contaminants to avoid the oxidation of catalyst. These collectively enhanced the photocatalytic activity and stability of Cu−FVO, which also maintained high catalytic activity even after 20 cycling degradation reactions.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Mengzhen Jiang,Ruohan Xu,Chunyan Yang,Haili Wang,Jinyuan Cai,Yanrong Wen,Mingfu Ye,Tingxuan Yan,Shuangshou Wang
cis -Diol compounds are of great biological and clinical values, but their detection is usually instrument-inseparable. Herein, a flexible sensing strategy was proposed at the first time for multi-mode visualization of cis -diol compounds based on boronate affinity (BA)-mediated colorimetry and fluorometry. Boronic acid-decorated sensors with color-/fluorescence-derived binary responsivity were designed using cis -diol fluorescent dyes or dyes-fluorophore counterparts as response units, inducing competitive BA when cis -diol analytes were existed. Consequently, colors and fluorescence of sensors changed simultaneously, and both signals were linearly varied versus the dosages of cis -diol analytes in certain ranges. As proofs of concept, dual-mode visual sensing of glucose in normal/hyperglycemic human serum and sucrose in canned white fungus and edible mushroom plant beverage was achieved with sensing time as short as 1 min and limit of detection as low as 0.18 mg/mL. Furtherly, color information of colorimetric/fluorometric cards and tested sensors was picked by a smartphone APP for digital image analysis, by which the validity of dual-mode visual sensing assays was reinforced by avoiding possible errors from subjective judgement on colors and fluorescence. Besides, the credibility of visual sensing was cross-validated by fluorescent quantification and classical tools such as portable blood glucose meter and phenol-sulfuric acid method-based halochromic reaction.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
·
2025
·
IF 2.8
Xinyuan Ye,Lili Jiang,Ying Xiong,Cui Zhang,Chenxi Wang,Meiling Qi,Chenyue Zhu,Yi Chen,Zhifeng Du,Zhongzhe Cheng,Hongliang Jiang
Oligonucleotide (ON) is one of the rapidly developing fields in biotherapeutics. Ultra high-performance liquid chromatography high-resolution mass spectrometry (UHPLC-HRMS) has been widely used for the identification of metabolites due to its high sensitivity, high resolution, and ability to provide structural information. The identification of ON metabolites in matrix has been reported by UHPLC-HRMS, however, manual data processing is time-consuming. In this study, an analytical strategy based on UHPLC-QTOF-MS/MS and molecule profiler software was established and employed for the automatic identification of metabolites of ONs. Fomivirsen (FMVS), a 21-mer antisense oligonucleotide with 20 phosphorothioate linkages, was selected as proof of concept. Firstly, the sample preparation and UHPLC-QTOF-MS/MS condition were optimized. Secondly, the feasibility of the automatic identification of ON metabolites by this strategy was verified using enzymatic digests of FMVS. Finally, in vitro and in vivo metabolites of FMVS were identified. As a result, the enzymatic digests of FMVS were successfully identified by the established strategy, and a total of 17 metabolites were identified from serum, plasma and tissues. FMVS was mainly metabolized by 3′-exonuclease in plasma, liver and kidney. This is the first study on metabolites identification of FMVS, and the proposed strategy would simplify the identification of ON metabolites, thus could be used for other ON metabolites.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Xiaoqin Zhang,Manyuan Yin,Jinggang Wang,Chengcai Pang,Xiaoqing Liu,Jin Zhu
Biobased feedstocks developed from renewable resources play a crucial role in polymers. Dimethyl octahydro-2,5-pentalenediol (MeOPD) with excellent thermal stability and rigidity is a biobased bicyclic diol derived from citric acid . In this work, MeOPD was first reacted with dimethyl carbonate (DMC) to form oligo (dimethyl octahydro-2,5-pentalenediol carbonate) (OMC). Subsequently, a series of poly(butylene-co-dimethyl octahydro-2,5-pentalenediol furanoate-co-carbonate) (PBMFC) polyesters with MeOPD units ranging from 5 to 31 mol% were synthesized via melt polycondensation from OMC, dimethyl furan-2,5-dicarboxylate (DMFD) and 1,4-butanediol (BDO). Due to the low reactivity of MeOPD, its actual content in copolymer is much lower than that in the feed, and as the MeOPD content rises, the number-average molecular weight of PBMFCs drops from 25,200 g/mol of PBMFC5 to 12,800 g/mol of PBMFC31. Despite the presence of MC units weakens thermal stability, PBMFCs still maintain good thermal stability, evidenced by T d,5% ranging from 294-325 °C in N 2 and from 295-339 °C in air. The mechanical properties are also satisfactory, exhibiting tensile modulus ≥ 500 MPa, tensile strength ≥ 23 MPa, and elongation at break ≥ 150 %. Compared to PET, PBMFCs demonstrate commendable gas barrier properties, with CO 2 and O 2 barrier capability being 4.7–11.0 times and 2.0–3.6 times that of PET, respectively. All results indicate that PBMFCs can serve as a renewable potential material for packaging application.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Tao Yang,Jiyang Zuo,Fei Liu,Caiqi Liu,Caohong Chen,Xiaoqin Jiang,Kangpeng Liu,Siqi Yu,Jinggang Wang,Jin Zhu
Thermoplastic elastomers (TPE), as a class of essential materials, play an important role in manufacturing, engineering, medical and military fields due to their excellent properties. However, the elastomers often underperform and suffer from the familiar trade-off between stiffness and high elasticity. In this study, thiophenedicarboxylic acid (TDCA), a class of potential bio-based aromatic monomers was used for the design and synthesis of high performance TPE. Poly(propylene thiophenedicarboxylate) (PPThF) possessing a surprising crystallization ability was proposed to use as an ideal hard segment, and a series of poly(ether-ester) copolymers were designed. Results showed that the well-defined reprocessable poly(ether-ester) elastomers demonstrated impressive ultra-high elastic modulus (>120 MPa), elasticity ( η r (1) = 55 %, and by adjusting the sequence structure, η r (1) can be further improved to as high as 73 %) and melting temperature ( T m = 164 °C). Plus, the TDCA-based TPEEs showed excellent biocompatibility and bacteriostatic effect. This innovative work not only provides an alternative choice for the fabrication of high performance bio-based TPE, but also resolves the irreconcilable contradiction between stiffness and elasticity.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Hong Chen,Wendong Li,Yue Wang,Shouzhen Li,Jichao Zhang,Caijiao Yu,Qixia Liu,Haoru Shan,Jianlong Ge
Carbon nanofibrous membranes (CNFMs) are promising materials for treating oily wastewater, but their broad application is limited by challenges such as hydrophobicity, lipophilicity, and poor flexibility. In this study, we developed a superhydrophilic and underwater superoleophobic CNFM with enhanced flexibility through electrospinning using polyacrylonitrile and benzoxazine as precursors. The morphology, mechanical properties, and surface wettability of CNFMs were effectively regulated by incorporating silica nanoparticles (SiO 2 NPs) into the spinning solutions. With an optimal doping level of SiO 2 NPs (over 23 wt% relative to the polymers), the resulting CNFM exhibited a biomimetic hierarchical structure and robust mechanical flexibility. A proposed mechanism indicates that doped SiO 2 NPs within the carbon nanofiber matrix help disperse bending strain and stress. Additionally, these nanoparticles created numerous hydrophilic sites on the CNFM surface, significantly enhancing capillary action for water—resulting in remarkable superhydrophilicity (water contact angle = 0°) and underwater superoleophobicity (oil contact angle > 155°), regardless of water conditions (acidic, alkaline, or saline). Consequently, the obtained CNFM effectively separated various oil-in-water emulsions solely under the force of gravity, and could be easily regenerated. This work offers a promising solution for designing next-generation membranes for oily wastewater treatment in complex environments.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）