INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2021
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IF 3.764
Xinyan Yang,Yunmei Wei,Yinhua Jiang,Yunyun Wang,Li Chen,Long Peng,Shen Zhang,Yan Yan,Yongsheng Yan
Removing excess phosphate from environmental water is extremely important to reduce eutrophication. In this study, cellulose nanocrystals (CNCs) were utilized as biological templates, and the SA-La-X was synthesized by calcination with lanthanum modification. Some characterization techniques were used to confirm the impregnation of La on the surface of mesoporous silica aerogel (SA). The obtained aerogels SA-La-5, 10, and 25 had large specific surface areas (262.69, 251.23, and 197.18 m2 g–1), and average pore sizes of aerogels SA-La-5, 10, and 25 were 5.14, 4.85, and 4.71 nm, respectively. The results manifested that sample SA-La-5 with the molar ratio of Si/La of 5:1 presented the maximum adsorption capacity of 42.08 mg g–1. Meanwhile, SA-La-X exhibited less La leaching, good stability, and strong selectivity for phosphate. Through the adsorption isotherm, the phosphate adsorption over SA-La-X samples followed the Langmuir model, and the kinetic experiment demonstrated that the adsorption process fitted the pseudo-second-order models. The phosphate adsorption mechanism of SA-La-X was detected by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and X-ray diffraction (XRD), and it was found that the binding mechanism of the adsorbent and phosphorus included electrostatic adsorption, surface precipitation, and ligand exchange. Among them, electrostatic and ligand exchange were considered to be the main ways to selectively adsorb phosphate at pH 3.0. At the same time, the prepared SA-La-X with a cylindrical shape was easy to separate without causing secondary pollution to the water system, which would be the promising adsorbent for phosphate adsorption in the water environment to reduce eutrophication.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 36
·16972-16980
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IF 3.3
Yan Shang,Jing Xu,Yue Ma,Zezhong Li,Qian Li
The Mn0.2Cd0.8S/NiCo2S4 was prepared using an electrostatic self-assembly method. It was confirmed by analyses of the crystal structure, morphology, and elemental composition. The photoelectrochemical measurement confirmed that Mn0.2Cd0.8S and NiCo2S4 had a close interaction and can form a Schottky barrier. The construction of the Schottky junction speeded up the transport of the photogenerated electrons and inhibited the recombination of the photogenerated electrons and holes. Using Mn0.2Cd0.8S/NiCo2S4, the amount of hydrogen production was higher than with NiCo2S4 and Mn0.2Cd0.8S alone. Different amounts of NiCo2S4 were loaded onto Mn0.2Cd0.8S for the photocatalytic hydrogen production reaction. The hydrogen photocatalytic hydrogen production of Mn0.2Cd0.8S/NiCo2S4-3 was 28.97 times higher than of the Mn0.2Cd0.8S. The Mn0.2Cd0.8S/NiCo2S4 composite exhibited excellent photocatalytic activity and stability, which provided reference values for exploring bimetallic sulfide composite materials, and demonstrated great potential in photocatalytic applications.
研究领域:
材料科学
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光催化
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DOI
高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 6
·1-16
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IF 2.4
Li Tong,Liu Fuliang,Wang Xiaofang,Han Zhaohao,Jia Xiaoqiong,Wang Ping,Chu Qingyan,Sheng Yuxuan
The precise embedding of metal species within specific sites of zeolite frameworks and their unique microenvironments exert fascinating influences on catalytic performance. Herein, we report the rational design of a highly efficient Co-Cu@CTS-1 catalyst through the strategic incorporation of Co, Cu, and Ce into TS-1 zeolite, where Ce is doped at silicon atomic sites while Co and Cu are encapsulated within the zeolite cages. Mechanistic investigations reveal that the synergistic interplay among Co, Cu, and Ce is pivotal for catalytic activity: Co facilitates molecular oxygen activation to generate reactive oxygen species (O⁻), while Ce(III) enhances oxygen vacancy concentration, significantly boosting styrene conversion. Moreover, the distinctive electronic interaction between Ce and Cu markedly improves the selectivity toward styrene oxide. The optimized Co-Cu@CTS-1 catalyst exhibits exceptional performance in the aerobic epoxidation of styrene, achieving a remarkable conversion of 78.11% with 87.31% epoxide selectivity under mild conditions (80 °C, 2 h). Furthermore, the catalyst demonstrates outstanding stability, retaining 68.21% conversion even after 20 reaction cycles, underscoring its superior resistance to metal sintering and long-term durability. This work provides valuable insights into the rational design of multifunctional zeolite catalysts through precise metal positioning and microenvironment modulation. Graphical
研究领域:
催化化学
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材料科学
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环境化学
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DOI
高影响因子
FUEL
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2024
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IF 6.7
Yuqian Wang,Defeng Zhou,Weiyi Zhang,Jie Yang,Qingyuan Sheng,Xiaofei Zhu,Jinghe Bai
The advancement and application of mesophilic solid oxide fuel cells (IT-SOFCs) rely heavily on enhancing cathode materials to achieve greater efficiency. In this paper, Pr 0.4 Sr 0.6 Co 0.2 Fe 0.8 O 3-δ (PSFC) and transition metal oxide CoOx were selected as cathode materials, which not only combined the high catalytic activity of Pr 6 O 11 but also took advantage of the structural stability and economy of Fe-based perovskite. The samples underwent analysis using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), and X energy dispersion spectrometer (EDS) for structural examination. The electrochemical workstation was used to test the conductivity of the material and the stability of the cell. The results indicate that an appropriate amount of CoO X composite can effectively enhance the level of oxygen vacancies, thereby enhancing the ORR activity of the cathode. Among these composites, Pr 0.4 Sr 0.6 Co 0.2 Fe 0.8 O 3-δ -CoO x -I exhibits the fastest rate of oxygen exchange at the surface and the best electrochemical performance. At 700 °C, the polarization resistance ASR of Pr 0.4 Sr 0.6 Co 0.2 Fe 0.8 O 3-δ -CoO x -I is 0.0749 Ω cm 2 ; In single-cell fuel mode with NiO-YSZ as anode, YSZ electrolyte, and GDC as cell layer, the peak power density (PDD) is 0.97W cm −2 . The PSCF-CoO x composite cathode holds promise as a high electrocatalytic active material for Solid Oxide Fuel Cells (SOFCs).
研究领域:
材料科学
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能源技术
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DOI
高影响因子
PEST MANAGEMENT SCIENCE
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2025
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IF 3.8
Guoqi Chen,Kai An,Jiahao Xue,Wei Deng,Zeyue Huang,Yang Xu
BACKGROUND Various mechanisms or factors may cause the wide infestation of herbicide-resistant weeds with different contributions, such as target-site resistance (TSR), non-target-site resistance (NTSR), hormesis, and dissemination of herbicide-resistant weeds. Here we tested this hypothesis in eastern China in Leptochloa chinensis , for which cyhalofop resistance is a major challenge to rice planting. RESULTS Our results revealed that 30% of the total 242 populations held high (10 < RI < 100) or very high resistance (RI > 100) to cyhalofop. Resistance increased from north to south, and from transplanted rice fields to direct-seeded rice fields. Six mutant types conferring TSR to cyhalofop were found in 89% sampled populations, with 18% carrying two types, 2% carrying three types, and another 2% carrying four types of mutations. W2027C was the most frequent TSR mutation, present in 47.3% of sampled populations, followed by I2041N (21.8%), W1999C (20%), L1818F (20%), W1999G (5.5%) and C2088R (1.8%). Non-target-site resistance linked with P450 monooxygenases (P450) and glutathione S-transferases (GST) were observed in 7% and 10% cyhalofop-resistant populations sampled. No significant correlation between genetic and geographic distances were observed among cyhalofop-resistant populations. Hormetic effects of cyhalofop to L. chinensis were evident in 13% of overall populations. CONCLUSIONS This study compared the contribution of different mechanisms towards herbicide resistance, revealed herbicide hormesis and revealed the distribution of resistance. Insights from this study could be important for weed management practices in other areas of the world. © 2025 Society of Chemical Industry.
研究领域:
植物学
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遗传学
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农业科学
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PubMed
高影响因子
JOURNAL OF ELASTOMERS AND PLASTICS
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2023
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IF 1.7
Xiaoyong Yang,Xiaofang He,Fuqin Xu,Zhaoyang Hou,Zhihui Ma,Jing Cai,Ruimin Jiao
With the rapid development of electronic devices and rubber tires, the industry has put forward new requirements for the heat dissipation of rubber components. With excellent thermal conductivity, oxidation resistance, and thermal stability, hexagonal boron nitride (h-BN) is often added to plastics or rubber as a thermally conductive filler, but is less effective when used directly. In this study, h-BN-K was prepared by direct modification of the mixed solution of KH-550, and KH-570, while h-BN-PK was prepared by co-modification of dopamine, KH-550, and KH-570. Two modified h-BN were added to natural rubber (NR) to improve the vulcanization properties, mechanical properties, and thermal conductivity. It was found that the tensile strength and thermal conductivity of 20 wt% h-BN-PK/NR composites were 30.6 MPa and 0.335 W/mK, which were 39.1% and 110.7% higher compared to pure NR (22.0 MPa and 0.159 W/mK), respectively. In addition, the addition of h-BN improved the thermal stability performance of NR to some extent. In conclusion, the h-BN-PK/NR composites provide a certain reference for the use of thermally conductive NR and suggest new ideas for heat dissipation of electronic devices.
研究领域:
材料科学
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高分子化学
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DOI
高影响因子
ACS Omega
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2021
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IF 3.512
Shuangping Xu,Wenqiang Ma,Hailiang Zhou,Yushu Zhang,Hongge Jia,Jingyu Xu,Pengfei Jiang,Xintian Wang,Wenwen Zhao
The synthesis of poly(methyhydrosiloxane) (PMHS) and N,N′-bis(3-allyl)pyromellitic diimide was optimized for O2/N2 separation. The membrane exhibits excellent mechanical and thermal properties and shows an O2/N2 selectivity of up to 4.44 with an O2 permeability of 31.0 Barrer; compared with polydimethylsiloxane (PDMS) and pure polyimide (PI) membranes, the separation selectivity shows a 107% increase for PDMS, and the permeation shows a 660% increase for pure PI. The obtained results were well above the ones reported on the literature for similar conditions opening the door for the preparation of a stable polysiloxane (PMHS-I) gas separation membrane with extraordinary O2/N2 separation performance.
研究领域:
材料科学
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化学工程
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膜技术
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气体分离
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DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
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2025
·
IF 7.3
Ruijie Liao,Jiakang Wu,Yanming Wang,Yuxia Pang,Hongming Lou,Zhixian Li,Dongjie Yang,Xueqing Qiu
In situ encapsulation of lipase within MOFs can enhance its stability and enable its reuse, which improves lipase’s greenness and economy. However, the compact MOFs framework can hinder the opening of the lipase’s active site “lid”, limiting the catalytic process. This study employs a strategy where amino acids are used to preopen the “lid” before in situ encapsulation of lipase to improve its activity. The experiment reveals that proline can increase the lipase’s activity by 1.2 times. Additionally, proline can coordinate with Cu2+ to form clusters that promote MOFs encapsulation process, increasing the enzyme loading to 139 mg/g, a 41% improvement. Comparison of the secondary structure of lipase before and after encapsulation demonstrated that proline can induce the unfolding of the “α-helix lid”, exposing the active site and enhancing catalytic efficiency. The resulting proline30-CRL@CuBDC exhibited activity 2.5 times higher than the directly encapsulated CRL@CuBDC, with its activity at 90 °C being 7.7 times that of lipase, and its conversion rate of substrate acetic acid to isoamyl acetate at 80 °C being 6.3 times that of lipase. The use of proline to preopen the “lid” followed by in situ encapsulation offers a novel approach for regulating enzyme activity during the encapsulation process.
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高影响因子
Food Science & Nutrition
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2019
·Vol. 7
·期 2
·797-804
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IF 1.747
Huhu Wang,Yue Qin,Jihao Li,Xinglian Xu,Guanghong Zhou
Soft-boiled chicken is widely popular with its flavor and texture. In a traditional view, the edible quality of soft-boiled chicken producing with hot-fresh carcass (without any chilled procedure after evisceration) was better than that of chilled carcass. Hot-fresh groups with 1, 2, or 4 hr and chilled groups with 24, 48, or 60 hr were used to clarify the view in this study. The results indicated that no significant difference in hardness, springiness, cohesiveness of texture profiles and b * value of skin color was observed between each group, although the highest L * value was obtained in hot-fresh 4 hr group. Higher contents of succinic acid were found in chilled groups when compared to that of hot-fresh groups, but there was no difference in lactic acid and pH values. Lower contents of adenosine 5′-monophosphate (AMP), guanosine 5′-monophosphate (GMP), inosine and hypoxanthine, and higher inosine-5′-monophosphate (IMP) (especially for hot-fresh 1 hr) were observed in hot-fresh groups. In addition, although no difference in umami amino acids and bitter amino acid was observed between each tested group, higher amounts of Asp, Met, Ile, Leu, Tyr, and Arg were observed in chilled groups, especially for chilled 60 hr. The finding indicated that the traditional view was lack of scientific evidence, and chilled carcass was suitable for soft-boiled chicken, substituting for the hot-fresh carcass.
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高影响因子
Catalysts
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2019
·Vol. 9
·期 3
·215
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IF 3.444
Penghe Su,Ya Chen,Xiaotong Liu,Hongyuan Chuai,Hongchi Liu,Baolin Zhu,Shoumin Zhang,Weiping Huang
A simple and practical Rh-catalyzed hydroformylation of vinyl acetate has been synthesized via impregnation-calcination method using silicate nanotubes (MgSNTs) as the supporter. The Rh0(zero valent state of rhodium) was obtained by calcination. The influence of calcination temperature on catalytic performance of the catalysts was investigated in detail. The catalysts were characterized in detail by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectrometer (XPS), atomic emission spectrometer (ICP), and Brunauer–Emmett–Teller (BET) surface-area analyzers. The Rh/MgSNTs(a2) catalyst shows excellent catalytic activity, selectivity and superior cyclicity. The catalyst could be easily recovered by phase separation and was used up to four times.Keywords:silicate nanotubes;Rh;hydroformylation;vinyl acetate
研究领域:
催化化学
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材料科学
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DOI
高影响因子
JOURNAL OF APPLIED TOXICOLOGY
·
2019
·Vol. 40
·期 3
·388-402
·
IF 3.065
Tianshu Wu,Keyu He,Xue Liang,Tingting Wei,Yan Wang,Lingyue Zou,Ting Zhang,Yuying Xue,Meng Tang
The excellent optical property and relatively low toxicity of CdTe/ZnS core/shell quantum dots (QDs) make them an advanced fluorescent probe in the application of biomedicines, particularly in neuroscience. Thus, it is important to evaluate the biosafety of CdTe/ZnS QDs on the central nervous system (CNS). Our previous studies have suggested that the high possibility of CdTe/ZnS QDs being transported into the brain across the blood-brain barrier resulted in microglial activation and a shift of glycometabolism, but their underlying mechanism remains unclear. In this study, when mice were injected intravenously with CdTe/ZnS QDs through tail veins, the microglial activation, polarized into both M1 phenotype and M2 phenotype, and the neuronal impairment were observed in the hippocampus. Meanwhile, the increased pro- and anti-inflammatory cytokines released from BV2 microglial cells treated with CdTe/ZnS QDs also indicated that QD exposure was capable of inducing microglial activation in vitro. We further demonstrated that the glycolytic shift from oxidative phosphorylation switching into aerobic glycolysis was required in the microglial activation into M1 phenotype induced by CdTe/ZnS QD treatment, which was mediated through the mTOR signaling pathway. The findings, taken together, provide a mechanistic insight regarding the CdTe/ZnS QDs inducing microglial activation and the role of the glycolytic shift in it.
研究领域:
神经科学
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毒理学
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细胞代谢
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生物医学工程
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DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.6
Kaipian Shi,Junfeng An,Yu Yin,Li Yin,Ziyu Rong,Jinyu Han,Shiyin Li
A stable XG-WAS@n-FeS slurry was constructed for simultaneous removal of Cr(VI) and TBBPA. • Xanthan gum enhanced slurry viscosity, stability, and oxidation resistance. • TBBPA was transformed through successive debromination reactions. • Coexisting contaminants influenced TBBPA removal through site competition. Nanoscale ferrous sulfide (n-FeS) is a promising reductant for water treatment, but rapid oxidation, particle aggregation, and poor transportability restrict its practical use. In this study, n-FeS was immobilized on alkali-modified waste activated sludge (WAS), and xanthan gum (XG) was added as a structural regulator. This approach produced a stable, shear-thinning XG-WAS@n-FeS slurry for the simultaneous removal of Cr(VI) and tetrabromobisphenol A (TBBPA). Carboxyl and hydroxyl groups contributed to the binding of FeS within the XG-WAS matrix, which helped establish a stable reactive interface. The slurry exhibited lower viscosity at higher shear rates, confirming its shear-thinning behavior. Increasing the XG concentration also improved sedimentation stability and oxidation resistance. Cr(VI) was completely removed at all tested concentrations. By contrast, TBBPA removal decreased from 81.93% to 53.19% as the Cr(VI) concentration increased from 20 to 80 mg L −1 . It also decreased from 92.49% to 58.99% when the TBBPA concentration increased from 5 to 20 μM. These concentration-dependent trends reflect the finite reducing capacity of the slurry and the preferential consumption of electrons by Cr(VI). Humic acid, Ca 2+ , Mg 2+ , and Cl − enhanced TBBPA removal to varying degrees, while Cr(VI) removal remained complete. XPS analysis showed that Cr(VI) was reduced and immobilized as Cr(III) species. HPLC-MS analysis revealed the stepwise debromination of TBBPA to BPA. These findings demonstrate that XG-WAS@n-FeS is a stable and effective slurry for treating water containing both Cr(VI) and TBBPA. Download: Download high-res image (190KB) Download: Download full-size image
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高影响因子
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