Plants-Basel
·
2024
·Vol. 13
·期 20
·2946
·
IF 4
Jiuying Li,Yinghui Zhu,Lanlan Sun,Hongle Xu,Wangcang Su,Fei Xue,Chuantao Lu,Wenwei Tang,Renhai Wu
Fenoxaprop-P-ethyl (FE) can effectively control weeds in rice fields, but it has been found to cause phytotoxicity in rice. In this study, the phytotoxicity of FE was mitigated by perilla leaf essential oil (PEO) in rice seedlings. The injury recovery rates (IRRs) for shoot length and fresh weight treated with 800 mg/L of PEO were 101.51% and 99.05%, respectively. Moreover, the damage ofs-metolachlor and pretilachlor was also alleviated when co-applied with 800 mg/L PEO; the IRR ofs-metolachlor phytotoxicity was 26.07% and 27.34%, respectively, and the IRR of pretilachlor phytotoxicity was 127.27% and 124.39%, respectively. However, PEO had no significant effect on the phytotoxicity of pinoxaden, mesotrione, penoxsulam, mesosulfuron-methyl, and nicosulfuron. The results of GC–MS analysis showed that a total of 23 components were detected in PEO, among which linalool (36.49%), linalyl formate (26.96%), α-terpineol (10.63%), 2-hexanoylfuran (5.81%), geranyl acetate (4.13%), and neryl acetate (2.30%) were the primary components. Among them, 2-hexanoylfuran was the most effective component to alleviate FE damage, for which the IRR of shoot length and fresh weight was 73.17% and 73.02%, respectively, followed by the geranyl acetate, for which the IRR was 72.32% and 60.56%, respectively, and neryl acetate, for which the IRR was 65.28% and 58.11%, respectively. Furthermore, the application of 50 mg/L of 2-hexanofuran significantly improved the tolerance of shoot length and fresh weight to FE stress by factors of 5.32 and 5.35, respectively. This research demonstrates that PEO and 2-hexanoylfuran have the potential to serve as natural safeners to reduce phytotoxicity.
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高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2024
·
IF 4.5
Yaya Feng,Tongda Lei,Shiyang Chen,Mengli Jin,Qian Zhang,Fenge Li,Xipeng Li,Jie Fan
This paper describes a temperature-responsive composite nanofibrous membrane by blending of the P(NIPAM-AM-ABP) (PNAA) nanofiber and the wool keratin (WK) nanofiber. The photo crosslinkable PNAA with the LCST value of 38.1 °C was obtained by free radical copolymerization of the temperature sensitive N-Isopropylacrylamide (NIPAM) monomer, the hydrophilic monomer Acrylamide (AM), and the photo crosslinkable monomer 4-Acryloyloxybenzophenone (ABP). Keratin was extracted from waste wool fiber by reduction method. The PNAA nanofiber (PNAA-NF) and the keratin nanofiber (WK-NF) were electoral spun separately by two-needle parallel spinning, and the obtained composite nanofiber membrane was then crosslinked by UV irradiation and heat treatments to prepare the PNAA/WK nanofiber membrane (PNAA/WK-NFM) with good water tolerance. The result indicated that the photo cross-linkable temperature sensitive PNAA with the LCST of 38.1 °C was successfully synthesized. The obtained PNAA/WK-NFM has a good fibrous morphology and excellent water tolerance. The composite nanofiber membrane showed good reversible temperature sensitivity and temperature responsive drug releasing property due to the PNAA. By combining of the PNAA-NF and WK-NF, the mechanical property of the PNAA/WK-NFM was greatly enhanced in both dry and wet states, and the slow drug releasing property of the membrane was further improved. In-vitro cell culture experiments indicated that the PNAA/WK-NFM has a good biocompatibility with no cytotoxicity. These findings suggested that the PNAA/WK-NFM has a potential application in temperature responsive drug releasing biomaterials.
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ChemistrySelect
·
2024
·Vol. 9
·期 23
·e202302680
·
IF 1.9
Pengpeng Li,Lei Su,Juan Chen,Shuo Li,Fu Su
Graphical Co 3 O 4 /Bi 2 MoO 6 p-n type heterojunctions were successfully prepared by hydrothermal combined in-situ deposition. The degradation rate of enrofloxacin reached 87.84 % in 30 min under visible light irradiation with PMS (monoperoxysulfate). Thanks to the construction of the p-n heterojunction system and the activation of the PMS, the photogenerated charge carriers of the Co 3 O 4 /Bi 2 MoO 6 composite can be completely separated and transferred to produce active species with higher oxidation properties. On this basis, the photocatalytic mechanism of Co 3 O 4 /Bi 2 MoO 6 /PMS was explored. In this work, Co 3 O 4 /Bi 2 MoO 6 p-n-type heterojunctions were successfully fabricated via a hydrothermal method combined with in-situ deposition. The as-prepared samples were systematically characterized by means of SEM, TEM, XPS, XRD, etc. Through the synergistic effect of PMS (peroxosulfate monosalt), the obtained composite CB-2 has a superior degradation performance of enrofloxacin under visible light irradiation, and the degradation rate of enrofloxacin reaches 87.84 % within 30 min. The reaction process of enrofloxacin degradation was analyzed by 3D EEM (exception emission matrix spectrum) and LC–MS (liquid phase mass spectrometry). The influence of the reaction system on EFA degradation efficiency without PMS synergy and light was studied. The kind of free radical was determined from the outcome of the EPR and free radical capture experiment. Benefiting from the construction of the p-n heterojunction system and the activation of the PMS, the photogenerated carriers of the Co 3 O 4 /Bi 2 MoO 6 composite can be fully separated and transferred to produce active species with higher oxidative properties. Based on this, the photocatalytic mechanism of Co3O4/Bi2MoO6/PMS was explored.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Weiduo Fei,Xinwen Ma,Xiandie Zhang,Jie Ji,Xiang Zhou
In this study, the self-assembly method is used to modify Al nanoparticles (Al NPs) with perfluorotetradecanoic acid (PFTD) to obtain Al@PFTD. Based on the C–F…F–C interaction and the hydrogen bond between –CF and –CH, the adsorbed PFTD is used to direct the precipitation of P(VDF-HFP) around modified Al NPs to obtain Al@PFTD@P(VDF-HFP) composite energetic materials. Scanning electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy are used to characterize the prepared samples, which prove a successful preparation process. The prepared Al@PFTD@P(VDF-HFP) is compared with physically mixed Al/P(VDF-HFP) counterparts by thermal analysis, electric ignition and constant-volume combustion tests. Thermal analysis results show that the reaction onset temperature of Al@PFTD@P(VDF-HFP) is 20 °C lower while its heat release is 135% higher. Electric ignition and constant-volume combustion tests show that the ignition delay, combustion time and pressurization rate are 50% shorter, 50% shorter and 40% faster, respectively. The improved energetic performance is mainly due to PFTD-directed precipitation of P(VDF-HFP) around Al NPs. Moreover, the fluorine-containing PFTD also contributes positively to energy density and reactivity through the pre-ignition reaction.
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Alexandria Engineering Journal
·
2025
·
IF 6.8
Wenliang Fan,Qinliang Gao,Yingying Yang,Ligang Wang,Yanlai Wang,Haiyan Yao
In order to discuss the intermediate band (IB) formation mechanism, influence on photoelectric conversion, electron transition process and other photovoltaic properties of Ti-doped p-CuGaS 2 light absorption material, p-CuGaS 2 and Ti-doped p-CuGaS 2 were synthesized through low-cost heat injection and annealing. Structural characterization results indicate that Ti 3 + partially replaced Ga 3+ in the Ti-doped p-CuGaS 2 . Two additional sub-band absorption peaks of Ti-doped p-CuGaS 2 confirm the formation of an IB. The band structures are confirmed by optical analysis and ultraviolet photoelectron spectroscopy, and the electron transition processes—from the valence band (VB) to the conduction band (CB), the valence band (VB) to the IB, and the IB to the conduction band (CB)—are analyzed. The IB formation mechanism is discussed using the band structure and theoretical calculations derived from density functional theory. A thin-film solar-cell model with Ti-doped p-CuGaS 2 as the absorbing layer is created. Numerical simulations based on experimental data show that the photoelectric conversion efficiency increase from 15.06 % for CuGaS 2 to 25.46 % for Ti-doped p-CuGaS 2 because of the IB effect, which enhances the optical absorption and extends the spectral response range. In conclusion, the research findings will establish a fundamental basis for the exploration of intermediate-band solar cells based on copper gallium sulfide.
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RARE METALS
·
2024
·
IF 9.6
Liang Xin,Zhao Dong-Qing,Huang Qian-Qian,Liang Sheng,Wang Li-Li,Hu Lei,Liu Ling-Li,Hu Kun-Hong,Deng Chong-Hai,Cheng Sheng,Zhu Er-Tao,Deng Hua-Xia
Lithium–sulfur battery is one of the most promising battery systems for industrialization due to its high theoretical specific capacity and high energy density. Nonetheless, the “shuttle effect” has restrained the advancement of lithium–sulfur batteries. In this work, a gradient-structured nanofiber membrane with pure gelatin on one side and Super P-MoO 2 /MoS 2 -gelatin on the other side was created using a multi-step electrostatic spinning technique, which was applied for multi-functional separator for lithium–sulfur batteries. The pure gelatin layer facing the anode side primarily homogenizes the lithium flux, whereas the Super P-MoO 2 /MoS 2 -gelatin layer facing the cathode side primarily adsorbs polysulfides by physical and chemical adsorption and enhancing polysulfide conversion efficiency. The findings demonstrate that even after 150 cycles at 0.2C, the lithium–sulfur battery can still sustain a discharge-specific capacity of 572.3 mAh·g −1 . When used with Li||Li symmetric batteries, it has a cycle life of more than 1200 h. The commercialization of lithium–sulfur batteries is given a fresh idea by this straightforward preparation technique. Graphical abstract
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Zhouzhou Li,Zheng Li,Feng He,Wen He,Qixu Chen,Hongqing Wang
Recently, how to improve the photocatalytic uranium removal performance of Graphite-phase carbon nitride (GCN) has always been a hot research topic. In this paper, a new strategy based on p-n junction and D-A structure is proposed to improve the photocatalytic performance. And as a result, a novel cyano modified photocatalytic material NC-GCN/Ag 2 O was designed and prepared for the reduction of U(VI). Interestingly, the material shows better adsorption performance for U(VI) in the dark treatment stage, and its removal of U(VI) is close to 70 % under the initial U(VI) concentration of 20 ppm and the solid–liquid ratio of 0.2 g/L. And the adsorption is in accordance with the Langmuir model and Pseudo second order model. After 30 min of illumination, the removal rate of U(VI) can reach 93.2 %, significantly higher than that of GCN (13.6 %) and NC-GCN 10 (37.7 %). It’s worth mentioning that photocatalytic reduction dominated the adsorption-reduction process for U(VI) removal after light exposure. In addition, after four cycles, the removal of U(VI) from the composite material decreased by only 5 % with no change in the crystal structure, i.e., it has good reusability and stability. Meanwhile, there was no significant interference with other ions except for Cu 2+ and V 5+ , which had a weak interference. Finally, a new mechanism for U(Ⅵ) reduction was proposed.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Mingwei Wu,Qinge Fan,Xiaohui Li,Penglong Wang,Caixia Feng,Li Wang,Zhixian Chang,Wenpeng Wu,Ruifeng Chong
The removal of antibiotics from aquatic solutions remains a global environmental challenge. In this work, the photocatalytic removal of a typical antibiotic-tetracycline (TC) using hydroxyapatite (HAp) as a catalyst was investigated. It was impressive that TC could be efficiently degraded by HAp under visible light irradiation, even though both HAp and TC exhibited poor harvesting in visible light region. The experimental and theoretical explorations were undertaken to thoroughly investigate the underlying mechanism of visible light degradation of TC over HAp. The results indicated that the formed TC-HAp complexes via surface coordination played an important role as photosensitizers for the visible light response. Together with the formation of a quasi p-n junction via band alignment, the photogenerated electrons in the highest unoccupied molecular orbital (HOMO) of TC-HAp were excited to the lowest unoccupied molecular orbital (LUMO) and subsequently migrated to the conduction band of HAp to achieve the efficient charge separation. Superoxide radicals and holes were found to be the major active species for TC degradation. The toxicity evaluation showed that TC could be transferred to the lower toxic intermediates, and deep oxidation with prolonged reaction time was necessary to eliminate the toxicity of TC. This work demonstrates the surface coordination with subsequent quasi p-n junction mechanism of TC degradation over HAp under visible light, which will stimulate us to explore new efficient photocatalytic systems for the degradation of various contaminants.
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高影响因子
ACS Omega
·
2025
·
IF 4.3
Chaofan Deng,Chun Cai
Pd–Cu bimetallic catalysts were successfully synthesized for the dehydrogenation of Bisphenol Z (BPZ) by an impregnation-reduction method. The obtained catalyst was studied by XRD, HRTEM, XPS, BET, and NH3-TPD techniques and effectively applied in the highly selective cleavage dehydrogenation of BPZ to give PPP > 99% yield at 270 °C and atmospheric pressure in the solvent-free condition. It was demonstrated that the “synergistic effect” of the bimetallic catalysts could effectively promote the cleavage dehydrogenation reaction. Pd species served as the primary active sites for the adsorption and dissociation of H* and the activation of C–H bonds, while the introduced Cu species accelerated the breaking process of the C–H bond. This catalyst demonstrated remarkable stability and could be reused over ten cycles without obvious decrease both in yield and selectivity. The likely reaction pathway was outlined to elucidate the cleavage dehydrogenation mechanism according to experimental results.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Shuanglong Xiao,Yang Zhang,Fan Zhang,Lulu Wang,Shaoji Wang,Shiwen Zhang,Lingzhi Xiong,Jilin Wang
Poly(p-terphenylene quinuclidinium) anion exchange membranes (AEMs) have remarkable chemical stability. However, their application in anion exchange membrane fuel cells (AEMFCs) is limited by the low conductivity resulting from poor ion mobility. In this study, novel poly(p-terphenylene quinuclidinium) polymers grafted with piperidinium suspended at the end of a long flexible alkyl side-chain are designed to prepare AEMs with both high conductivity and stability. The microphase separation morphology can be optimized by modulating the length of the flexible piperidinium side chains. Quaternary ammonium poly(p-terphenylene quinuclidinium) grafted with (6-bromoalkyl)-1-methylpiperidine (QPPTQ-6-Pip) has the most pronounced microphase separation structure, with higher water uptake (110.7 %), and thus the highest conductivity (194.7 mS cm −1 ) at 80 °C. Multi-carbon quinuclidinium's hydrophobicity suppresses swelling (48.4 %, 80 °C), which in combination with the microphase separation results in excellent alkaline stability of the membrane (retained 91.6 % at 80 °C after 1680 h immersion in 1 M NaOH). In addition, the side-chain length modulation enables QPPTQ-6-Pip to have excellent mechanical properties (tensile strength: 52.8 MPa, elongation at break: 21.5 %), thus allowing for application in fuel cells. The single cell test show that the peak power density is able to reach 1.24 W cm −2 , and the performance decays by 13.9 % after 90 h. This study provides an effective strategy to regulate the microstructure and performance of AEMs by grafting side chain engineering, which is of great significance to promote the practical application of high performance AEMs.
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Journal of Water Process Engineering
·
2025
·
IF 6.7
Rongting Yang,Mengying Liu,Ronghao Wu,Chao Xue,Zuliang Chen
Excess phosphorus in aquaculture wastewater is prone to pose a dual threat to ecological and economic benefits. This study is a simple and low-cost biomolecule-reinforced biochar composite based on three plant extracts with the ability to remove total phosphorus (TP) in real wastewater. Various analyses of the three plant extracts were conducted to understand the differences in TP removal efficiency and identify the differences in the functional groups on their surfaces. The results indicated that plant extracts derived from Excoecaria cochinchinensis Lour (Ec), Green tea (GT), and Pinus massoniana Lamb (PML), were rich in oxygen-containing functional groups, amino and carboxyl groups, and rich in organic acids, respectively. These results revealed differences in adsorption efficiency of the three materials. Among the three biochars obtained by plant modification, P -biochar 3, showed a superior TP removal capacity with a removal efficiency at 70.9 %. The kinetic analysis of its adsorption behavior followed a pseudo-second-order model (R 2 = 0.992), suggesting that the chemisorption mechanism was dominant. Advanced characterization also identified the enhancement of its oxygen-containing functional molecules, facilitating the interaction with phosphate species. Meanwhile, P -biochar 3 maintained a TP removal efficiency above 55.45 % in a real eel aquaculture wastewater column experiment, and it could remove multiple pollutants. This study demonstrates that functionalization of plant extracts is a viable strategy for the development of sustainable adsorbents capable of addressing nutrient pollution in various agricultural wastewater streams.
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高影响因子
POLYMER
·
2025
·
IF 4.5
Yang Gou,Yi-fan Zha,De-xiang Sun,Jing-hui Yang,Yong Wang
The inherent flammability of epoxy resin remains a critical challenge in material applications. To address this issue while overcoming the common drawbacks of flame-retardant additives-including poor miscibility with epoxy matrices, deterioration of mechanical properties, and long-term leaching - recent research has focused on developing efficient reactive flame retardants capable of participating in epoxy curing reactions. In this study, a novel multifunctional reactive flame retardant (TD-DOPO) synthesized through a one-step reaction of tyramine, 1,4-benzaldehyde, and 9,10-dihydro-9-oxo-10-phosphanthracene-10-oxide (DOPO) was presented. In the epoxy system, TD-DOPO demonstrated exceptional flame-retardant performance via a biphasic synergistic mechanism, achieving UL-94 V-0 rating at a remarkably low phosphorus content of merely 0.2 wt%, and the peak heat release rate (PHRR) and total heat release (THR) were also reduced by 31.5 % and 22.4 %, respectively. Concurrently, the limiting oxygen index (LOI) increased significantly from 22.2 % to 33.1 %. Notably, the multiple reactive sites of TD-DOPO not only synergistically modulated the epoxy ring-opening kinetics but also facilitated the formation of a hierarchical crosslinked network due to its inherent rigid molecular structure. This unique molecular architecture simultaneously enhanced the mechanical properties of the composite, resulting in a 29.6 % improvement in toughness. Furthermore, the tensile and flexural modulus increased to 2183.5 MPa and 3909.8 MPa, respectively, while excellent thermal properties were maintained. This work demonstrates that the design and synthesis of novel multi-reactive center flame retardants represents a straightforward yet effective strategy for developing flame retardant epoxy resin with good comprehensive performances.
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危险品化学品经营许可证（带存储）