WATER RESEARCH
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2024
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IF 11.4
Yuanping Fang,Congli Chen,Bin Cui,Haiyan Li,Dandan Zhou
Frequent occurrence of trace antibiotics in reclaimed water is concerning, which inevitably causes aquifer contamination in the case of managed aquifer recharge (MAR). Global governments have formulated strict reclaimed water standards to ensure the safety of water reuse. Recent studies have found that improved antibiotics removal is intimately associated with high ammonia-oxidizing activity. However, the role of NH 4 + -N in the removal of residual antibiotics of reclaimed water during MAR remains unknown. NH 4 + -N removal and the effects of ammonia oxidation on antibiotics biodegradation in the aquifer are the most significant facts for solving the above collision. In this work, the effects of NH 4 + -N (0, 1 and 5 mg/L) in a model refractory antibiotic (oxacillin (OXA), 100 μg/L) attenuation were deciphered by employing three individual simulated MAR columns, which so called N0, N1 and N5. The results showed that 5 mg/L NH 4 + -N in influent upregulated the abundance of amo genes by 28.9 %-68.0 % in N5. And the enriched functional genes encoding key degradation enzymes enhanced the OXA removal by 18.7 % and alleviated the oxidative stress caused by antibiotics. Subsequently, antibiotic resistance genes (ARGs), mobile gene elements (MGEs) and human bacterial pathogens (HBPs) abundance were all significantly decreased. Moreover, the intimate association between ammonia-oxidizing microorganisms (AOM) and candidate OXA degraders based on microbial network analysis further supported the significance of AOM on OXA biodegradation. This study provides comprehensive evidence that appropriate amounts of NH 4 + -N are beneficial in antibiotics and antibiotic resistance risk reduction, providing compelling insights for refine NH 4 + -N recharge limitation.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Wei Ding,Min Feng,Ziqi Zhang,Faying Fan,Long Chen,Kewei Zhang
Triethylamine, an extensively used material in industrial organic synthesis, is hazardous to the human respiratory and nervous systems, but its accurate detection and prediction has been a long-standing challenge. Herein, a machine learning-motivated chemiresistive sensor that can predict ppm-level triethylamine is designed. The zero-dimensional (0D) bismuth vanadate (BiVO 4 ) nanoparticles were anchored on the surface of three-dimensional (3D) tungsten oxide (WO 3 ) architectures to form hierarchical BiVO 4 /WO 3 heterostructures, which demonstrates remarkable triethylamine-sensing performance such as high response of 21 (4 times higher than pristine WO 3 ) at optimal temperature of 190 °C, low detection limit of 57 ppb, long-term stability, reproducibility and good anti-interference property. Furthermore, an intelligent framework with good visibility was developed to identify ppm-level triethylamine and predict its definite concentration. Using feature parameters extracted from the sensor responses, the machine learning-based classifier provides a decision boundary with 92.3 % accuracy, and the prediction of unknown gas concentration was successfully achieved by linear regression model after training a series of as-known concentrations. This work not only provides a fundamental understanding of BiVO 4 -based heterostructures in gas sensors but also offers an intelligent strategy to identify and predict trace triethylamine under an interfering atmosphere.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2024
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IF 4.3
Zhiyu Xue,De Ning,Kaihong Jia,Hao Liu,Yong Xiang,Jinlong Cao,Junxian Chen,Yeshuang Zhong,Xinyu Wang,Zhen Zhang
Carbon dots (CQD) have received significant attention as a novel ratiometric fluorescent pH nanoprobe, owing to their favorable optical properties and excellent biocompatibility. Despite their appealing features, the precise mechanism behind the pH-sensitive photoluminescence of CQDs remains to be fully understood. This study endeavors to unravel the mechanism underlying the pH-responsive ratiometric fluorescence in dual-emission CQDs, synthesized through a one-step hydrothermal method using o-phenylenediamine and oxalic acid as precursors. The resultant CQDs exhibit inherent dual-emission at wavelengths of 383 nm and 566 nm, with the ratiometric fluorescence response tailored by the ratio of precursors, providing a robust tool for pH sensing across a range of 2 to 6. Detailed characterizations, including chemical, morphological, and optical analyses, alongside theoretical insights from time-dependent density functional theory (TD-DFT), elucidate the mechanism underlying the pH-dependent luminescence, attributed to the electron cloud transmission between amide and adjacent carboxyl groups on the CQD surface. The superior performance of these CQDs in real-time pH monitoring is demonstrated through their application in glucose oxidase-catalyzed reactions, showcasing their potential as efficient, reliable nanoprobes for biomedical research and diagnostic applications.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Zhiliang Feng,Zekun Geng,Shuzhen Pan,Yaru Yin,Xinzhi Sun,Xiaojuan Liu,Lei Ge,Feng Li
The electrocatalytic valorization of glycerol is an emerging upcycling process for the biomass utilization. In this work, nickel/sulfur-codoped laser-induced graphene (LINiSG) on flexible polyimide film was fabricated and demonstrated as a self-supported and binder-free monolithic electrode for electrocatalytic glycerol oxidation reaction (EGOR) towards the selective generation of value-added three-carbon (C3) chemicals. The laser-induced in-situ and synchronous carbonization of polysulfone and Ni precursor was demonstrated to remarkably promote both the electrochemical surface area and Ni loading of LINiSG electrode. These synergistic merits are considered as the main origin for its enhanced EGOR activity and stability, showing much smaller Tafel slope and 2-fold enhanced current density, as compared to LINiG electrode without the co-carbonization of polysulfone. The influence of experimental parameters has been systematically investigated by the product analysis, achieving an average 94.7 % C3 selectivity and 76.1 % C3 Faradaic efficiency with a high selectivity of dihydroxyacetone (ca. 67.7 %) in near-neutral conditions, which is better than most of the reported EGOR electrodes operated in near-neutral conditions. This work demonstrated the viability of using flexible self-supported and binder-free LIG electrode with rational design and preparation approach for electrocatalytic valorization of biomass.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2024
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IF 5.7
Yanqun Huang,Pingping Lu,Hongyun Lan,Daozhan Huang,Beiyang Liu,Qiaozhen Wei,Lanjie Huang,Yuehong Gan
Twelve novel longifolene-derived primary amine carboxylates were synthesized and evaluated for herbicidal activity. The structures of title compounds were confirmed by Fourier-transform infrared spectroscopy, 1H nuclear magnetic resonance (NMR), 13C NMR, and high-resolution mass spectrometry. The results showed that all the synthesized compounds exhibited higher herbicidal activity than the corresponding carboxylic acids involved in the reaction and the commercial herbicide glyphosate; some of them even possessed inhibition rates of 100% against Lolium multiflorum Lam. and Brassica campestris at low concentrations (0.039–0.313 mmol/L). Moreover, structural factors, including types of carboxylates and carbon chain length, had a great influence on the herbicidal performance. The herbicidal activity of dicarboxylates was similar to or much higher than that of corresponding monocarboxylates and glyphosate. Furthermore, compound 5l was found to be the most active candidate against the root and shoot growth of L. multiflorum Lam. and B. campestris with half maximal inhibitory concentrations (IC50) of around 0.010 and 0.023 mmol/L. The present work indicated that those prepared compounds have great potential to serve as high-performance botanical herbicides used at low doses.
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2024
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IF 2.6
Zhang Daile,Pan Dijun,Xiao Qunhao,Wang Qian
Aqueous magnesium ion batteries (AMIBs) have aroused enormous concern on account of their high intrinsic safety, low manufacturing budget, and eco-friendliness for large-scale storage application. Although the spinel-type manganese oxides presented good storage properties of Mg ion, their poor diffusion kinetics greatly limited their further application. In this work, MgMn 2-x Ni x O 4 was synthesized via electrochemical conversion from LiMn 2-x Ni x O 4 precursors. Their electrochemical properties were affected by the stoichiometric ratio of Mn:Ni. MgMn 1.5 Ni 0.5 O 4 displayed good rate capability with a discharge specific capacity of 221.8 mAh g −1 at a current density of 50 mA g −1 and stable cycling of 500 laps with a capacity retention of 92.9% at a current density of 1000 mA g −1 . Substituting Ni ion for partial Mn ion could raise the content of Mn 4+ and the electrical conductivity, which was in favor of the redox reaction in the discharge/charge processes. Moreover, spinel MgMn 1.5 Ni 0.5 O 4 achieved a high Mg ion diffusion ability, generating good electrochemical behavior.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Zhiyuan Ni,Tao Yu,Xiang Li,Chunming Liu,Junhua You,Xuanwen Liu,Rui Guo,Hangzhou Zhang,Hongyu Li
Electrochemical carbon dioxide reduction (ECR), which converts carbon dioxide into valuable chemical substances, effectively achieves sustainable carbon neutrality. In this study, we report that CuO catalysts with varying vacancy (CuO-O V ) concentrations and morphological structures. CuO-O V can significantly enhance the selectivity for ethylene (C 2 H 4 ) and multicarbon products (C 2+ ) by reducing the free energy required for the formation of ∗CHO intermediates from ∗CO hydrogenation and lowering the energy barrier for C-C coupling reactions. The CuO(NaOH) catalyst exhibited a maximum Faradaic efficiency of 55.7% for the C 2+ product at -1.36 V vs. RHE. And C 2 H 4 displays a maximum Faradaic efficiency of ∼32.7% at -1.56 V vs. RHE.
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Food Bioscience
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2025
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IF 5.9
Zhiwei Sun,Liping Liu,Ruiguo Li,Xiangying Zhao,Jianjun Liu,Jiaxiang Zhang
Mung bean yogurt (MBY) is a novel plant-based milks substitute. Changes in quality and aroma during the fermentation of MBY are key factors influencing its commercial value. This study investigated the effects of Lactiplantibacillus plantarum ( L. plantarum ) SF28 fermentation on the nutritional and flavor characteristics of MBY. Fermentation was conducted with L. plantarum SF28 at 35°C for 12 h. Results showed that MBY fermented for 8 h achieved the highest sensory score. L. plantarum SF28 thrived in MBY and maintained or increased the levels of free polyphenols, with vitexin and isovitexin particularly well preserved. Additionally, fermentation elevated the levels of umami free amino acids and antioxidant capacity in MBY while reducing oligosaccharides and phytic acid. Glutamic acid, aspartic acid, and lactic acid were identified as major contributors to MBY’s taste, imparting umami and acidic notes. Fermentation decreased off-odor compounds such as hexanal and enhanced aromatic components like ketones and esters, which impart desirable aroma characteristics to MBY. The fermentation of MBY with L. plantarum SF28 demonstrates potential for practical applications, offering a promising approach to the deep processing of mung bean products and enhancing their added value.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Kexin Li,Bin He,Ruirui Wang,Ruiyi Yan,Ruirui Zhang,Ruixia Liu
The selective oxidation reaction of cyclohexane is one of the typical activated sp 3 C-H reactions, and its product adipic acid (AA) is the indispensable raw material used to produce nylon. However, subjecting to the inertness of C-H bond and the great reactivity of AA, the targeted transformation of cyclohexane remains a challenge. Here, the interfacial hydrogen bond (IHD) was developed by anchoring CeO 2 on graphite carbon nitride (g-C 3 N 4 ) surface, which could boost targeted acquisition adipic acid from aerobic oxidation of cyclohexane. The results indicated that the IHD effect can be flexibly regulated by changing the ratio of Ce 3+ /Ce 4+ , further optimizing the properties of surface OH species and Lewis acid sites. Under the synergistic effect of Ce 3+ /Ce 4+ and Lewis acid sites on reaction interface, the glorious performance (32.2% conversion of cyclohexane with 66.4% selectivity) was obtained over the as-prepared CeO 2 /g-C 3 N 4 IHD system. In addition, the interfacial adsorption properties of cyclohexane were explored by the virtue of in situ infrared spectroscopy, revealing the IHD effect could tune the adsorption behavior of cyclohexanone and further improve the selectivity of AA. This work disclosed that engineering the interface hydrogen bond effect between CeO 2 and g-C 3 N 4 provided feasible strategies to obtain excellent catalyst for cyclohexane oxidation.
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ANALYTICA CHIMICA ACTA
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2024
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IF 5.7
Chiyu Ma,Yong Qiu,Tao Liang,Nan Jiang,Liubing Kong,Jianguo Wu,Xianyou Sun,Guangqing Ren,Xinwei Wei,Ping Wang,Hao Wan
Background Ionic calcium (Ca 2+ ) plays a crucial role in maintaining normal physiological and biochemical functions within the human body. Detecting the concentration of Ca 2+ is of utmost significance for various purposes, including disease screening, cellular metabolism research, and evaluating drug effectiveness . However, current detection approaches such as fluorescence and colorimetry face limitations due to complex labeling techniques and the inability to track changes in Ca 2+ concentration. In recent years, extensive research has been conducted in this field to explore label-free and efficient approaches. Results In this study, a novel light-addressed potentiometric sensor (LAPS) using silicon-on-sapphire technology , has been successfully developed for Ca 2+ sensing. The Ca 2+ -sensitive LAPS achieved a wide-range detection of Ca 2+ , ranging from 10 −2 M to 10 −7 M, with an impressive detection limit of 100 nM. These advancements are attributed to the ultra-thin silicon layer, silicon dioxide layer, and solid-state silicon rubber sensitive membrane around 6 μm. Furthermore, the sensor demonstrated the ability to dynamically monitor fluctuations in Ca 2+ concentration ranging from 10 −9 M to 10 −2 M within a solution. Its remarkable selectivity , specificity, and long-term stability have facilitated its successful application in the detection of Ca 2+ in human serum and urine. Significance and novelty This work presents a Ca 2+ -sensitive sensor that combines a low detection limit and a wide detection range. The development represents the emergence of a label-free and rapid Ca 2+ detection tool with immense prospects in home-based health monitoring, community disease screening, as well as cellular metabolism, and drug screening evaluations.
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Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Wang Lixiang,Ren Qiang,Wang Xiaoli
Through a facile sol-gel method, a novel Z-scheme heterojunction BTMO was synthesized by combining Bi-modified TiO 2 with oxygen-modified graphitic carbon nitride. Bi serves as an electron mediator in the catalyst, facilitating the transfer of excited electrons to MCN-O. Infrared characterization reveals that the doping of O increases the adsorption of peroxymonosulfate by the catalyst, promoting the reaction between electrons on the conduction band of MCN-O and PMS. The as-prepared BTMO Z-scheme heterojunction significantly improved the degradation rate of trichloroethylene was in BTMO/PMS system. TCE degradation efficiency in BTMO/PMS photocatalytic system could reach 99.8 % within 1 hour. According to the results of electron paramagnetic resonance and quenching experiments, sulfate radical and holes are the main reactive species in BTMO/PMS system. This novel photocatalyst also exhibited excellent durability. This work provides a new method for solving environmental problems through visible light photocatalysis.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Zekun Dong,Jie Yao,Zhihui Hu,Jiao Yang,Yan Zhang
Electro-peroxone (EP) is a novel technique for the removal of refractory organic contaminants (ROCs), while the role of anode in this system is neglected. In this work, the EP system with graphite felt anode (EP-GF) and activated carbon fiber anode (EP-ACF) was developed to enhance ibuprofen (IBP) removal. The results showed that 91.2% and 98.6% of IBP was removed within 20 min in EP-GF and EP-ACF, respectively. Hydroxy radical ( O ⋅ H ) was identified as the dominant reactive species, contributing 80.9% and 54.0% of IBP removal in EP-ACF and EP-GF systems, respectively. The roles of adsorption in EP-ACF and direct electron transfer in EP-GF cannot be ignored. Due to the differences in mechanism, EP-GF and EP-ACF systems were suitable for the removal of O ⋅ H -resistant ROCs (e.g., oxalic acid and pyruvic acid) and non- O ⋅ H -resistant ROCs (e.g., IBP and nitrobenzene), respectively. Both systems had excellent stability relying on the introduction of oxygen functional groups on the anode, and their electrolysis energy consumption was significantly lower than that of EP-Pt system. The three degradation pathways of IBP were proposed, and the toxicity of intermediates were evaluated. In general, carbon anodes have a good application prospect in the removal of ROCs in EP systems.
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