JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2025
·
IF 4.9
Jing Li,Ying-Xia Ma,Shi-Fan Chang,Wen-Jing Li,Rui-Xiang Wu,Zhi-Da Wang,Yu-Ting Chai,Fen Ran
Metal-organic frameworks (MOFs) exhibit promising prospects as supercapacitor electrode materials due to the high specific surface area, adjustable pore structure and flexible structural design, but suffer from low conductivity, unstable structure and easy collapse. In this work, by selecting nickel (Ⅱ) nitrate hexahydrate and 2-amino-5-mercapto-1,3,4-thiadiazole (EAMTD, containing various functional groups), a series of Ni-MOFs-EAMTD samples were fabricated in a mixed solvent system of N, N-dimethylformamide and ethylene glycol. EAMTD and mixed solvents provided a coordination environment rich in S, N and O heteroatoms for Ni ions, enhancing the delocalization of charge throughout the framework. The synergistic electronic interaction improved electrical conductivity and electrochemical performance of the Ni-MOFs-EAMTD, which demonstrated a high specific capacitance of 1608.0 F·g -1 at 1 A·g -1 . And assembled into an asymmetric supercapacitor (ASC) with activated carbon, it exhibited high energy density (39.2 Wh·kg -1 ) and power density (850.0 W·kg -1 ). More significantly, the ASC exhibits self-regenerative property. After 10000 cycles, the specific capacitance of ASC dropped to 45%, then recovered to 65%, which was attributed to the decomposition of Ni-MOFs-EAMTD into smaller nanoparticles and the release of active sites to compensate for the capacitance. This work provides a feasible strategy to develop MOFs-based electrode materials, paving the way for secondary resource utilization and extended industrial chain development.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Chunjing Shi,Menghang Wang,Zhenyu Zhang,Hongxiu Zhou,Pengfei Hu,Longhua He,Xingzhong Liu,Huaxiang Cai,Zehong Pang
Ceramic dentures differ from those produced by additive manufacturing, and manual polishing is employed for ceramic dentures due to their hard-brittle nature, complex shapes, and thin-walled structures with thicknesses less than 1.0 mm. This presents challenges for the medical and manufacturing industries. To address these challenges, we prepared a novel ternary composite of Fe 3 O 4 @TiO 2 @PB (Prussian blue) to establish a photo-Fenton system. This composite enhances the transport of photogenerated electrons and facilitates the generation of radicals, demonstrating high photocatalytic activity for the polishing and degradation of pollutants without the need for sacrificial agents. Meanwhile, Fe 3 O 4 @TiO 2 @PB was utilized to develop a new photocatalytic magnetorheological polishing slurry. The slurry consisted of sorbitol, hydrogen peroxide, Fe 3 O 4 @TiO 2 @PB, and ceria (0.025 wt. %). After polishing, the surface roughness (Sa) decreased from 5.538 to 0.081 μm, representing a reduction of 98.54 % compared to the pristine surface. Due to photogenerated hydroxyl radicals, the Si-OH and Li-OH bonds can be created on the surface of the ceramic dentures, facilitating defects removal. Before and after polishing, the ceramic dentures enhanced the inhibition rates of Escherichia coli and Staphylococcus aureus from 50 % to 74 % and from 49 % to 80 % over the course of one day, respectively. Through irradiation with simulated sunlight, Fe 3 O 4 @TiO 2 @PB generates electrons, holes, and hydroxyl radicals, leading to the degradation of amoxicillin (AMOX) and polysorbate (PS20) by up to 99 % within 60 min. Additionally, Fe 3 O 4 @TiO 2 @PB was successfully separated and reused from the developed slurry. Therefore, the designed and developed novel ternary composite, Fe 3 O 4 @TiO 2 @PB, achieves photocatalysis, photodegradation, and recycling, offering new solutions for the medical, manufacturing, and environmental industries.
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Water
·
2025
·Vol. 17
·期 14
·2161
·
IF 3
Qiliang Xiao,Jun Nan
This study presents the development of a novel Cu–Co–O-codoped graphitic carbon nitride (g-C3N4) catalyst for efficient peroxymonosulfate (PMS) activation to degrade sulfamethoxazole (SMX) in aqueous environments. The synthesized Cu–Co–O-g-C3N4catalyst demonstrated exceptional catalytic performance, achieving 90% SMX removal within 10 min—significantly outperforming pristine g-C3N4(14%) and O-doped g-C3N4(22%)—with a reaction rate constant of 0.63 min−1. The superior activity was attributed to the synergistic effects of Cu-Co bimetallic doping and oxygen incorporation, which enhanced the active sites, stabilized metal ions, and minimized leaching. Mechanistic studies revealed a dual-pathway degradation process: (1) a radical pathway dominated by sulfate radicals (SO4•−) and (2) a non-radical pathway driven by singlet oxygen (1O2), with the latter identified as the dominant species through quenching experiments. The catalyst exhibited broad pH adaptability and optimal performance at neutral to alkaline conditions. Characterization techniques (XRD, FTIR, XPS) confirmed successful doping and revealed that oxygen incorporation modified the electronic structure of g-C3N4, improving charge carrier separation. This work provides a sustainable strategy for antibiotic removal, addressing key challenges in advanced oxidation processes (AOPs), and highlights the potential of multi-heteroatom-doped carbon nitride catalysts for water purification.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Jianhua Zheng,Jiayi Hou,Zhen Xu,Zhenping Guan,Xiangyu Cao,Guangming Yin
Rational design of heterojunction is of vital importance for addressing the rapid recombination problem of photogenerated charge carriers in photoreactions. Herein, a highly efficient Z-scheme heterojunction with interfacial Zn-O-Ce bonds was successfully fabricated by hybridizing 3D flower-like hierarchical ZnCo 2 O 4 (ZCO) microspheres with CeO 2 nano particles (NPs) and used to photocatalytic remove multiple pollutants. These features of Z-scheme charge transfer mechanism and chemically bonded interface not only reserved the strong oxidation–reduction ability of CeO 2 /ZCO hybrid but also speeded up electron migration from CeO 2 to ZCO. Meanwhile, the 3D hierarchical structure provided rich photocatalytic reaction sites and increased light harvesting ability. Thus, the as-prepared CeO 2 /ZCO displayed an extraordinary photocatalytic decomposition of Ciprofloxacin (CIP) and Basic Fuchsin (BF), removal rate as high as 87.6 % and 90.7 %, respectively. This work can enlighten a new insight to design versatile hetero-catalysts for solar energy conversion.
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Results in Chemistry
·
2025
·
IF 4.2
Worku Lakew Kebede,Molla Tefera,Amogne Wondu,Melesse Ababay,Abrha Berhe,Mengistu Mulu,Atnafu Guadie
Water contamination caused by textile and industrial dyes is currently among the most important issues facing humanity that require urgent attention. Organic pollutants are harmful and can cause cancer in both humans and aquatic life. Even small amounts of these pollutants in water can lead to grave health problems. One promising way to clean up these pollutants is through degradation, using oxysulfide-based photocatalysts. These materials are effective because of their advanced optical and structural properties. The Sn-Mo(O,S) 3 catalysts were prepared through an easy precipitation process conducted at low temperatures. Different techniques were used to examine the catalyst's shape, structure, electrical properties, chemical makeup, and how it interacts with light. The Sn-Mo(O,S) 3 oxy-sulfide nanoparticle was successfully used to break down organic pollutants through photocatalytic processes. Among the samples made, the SMOS-25 catalyst showed the best performance in breaking down methylene blue dye. The effectiveness of the SMOS-25 catalyst was tested by seeing how well they could break down organic dye pollutant when exposed to visible light. The SMOS-25 nanoparticle was able to remove 98.9 % MB dye from water within 105 min under visible light. In this system, the main substance responsible for breaking down the dye is hydroxyl radical ( • OH).
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xuan Xuan,Shuang Meng,Guozhe Sui,Ning Liu,Dongxuan Guo,Dantong Zhang,Xue Yang,Yue Li,Jinlong Li
The rational design of solid-solution-oxide heterostructure presents a promising pathway to synergize band structure engineering and interfacial charge dynamics in advanced photocatalysis. Herein, a novel S-scheme CeZnO/ZnO heterojunction was fabricated through solid-solution lattice engineering, where Ce-O-Zn covalent bonding networks are strategically constructed at phase boundaries via controlled exceedance of the Ce solubility limit in ZnO matrix. Coupled with Ag nanoparticle-induced localized surface plasmon resonance (LSPR), this hierarchical system achieves remarkable visible-light-driven tetracycline (TC) degradation (90.4 % within 60 min). The outstanding degradation performance can be attributed to the formation of a built-in electric field at the Ce-O-Zn interface, the presence of oxygen vacancies, and the synergistic catalytic effect of Ag nanoparticles. Density functional theory (DFT) calculations and experimental characterizations further reveal that the CeZnO/ZnO heterojunction facilitates S-scheme charge transfer via Ce-O-Zn bonds, improving charge transfer and separation efficiency while preserving the strong redox capability of photo-generated charge carriers. This study provides valuable insights into the design of high-performance heterojunction photocatalysts and carries significant implications for the development of photocatalysis.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Sai-Yu Huang,Qi-Hang Zhou,Ying-Jie Song,Yu-Han Dong,Jia-He Zhang,Jing-Yu Pang,Dong-Bin Dang,Yan Bai
Electronic structure modulation of active sites plays a critical role in oxidation catalysis reactions but remains insufficiently explored in polyoxometalate (POM) systems. Here, we employ Anderson-type polyoxomolybdates (XMo 6 , X = Fe, Co, Ni) as molecular platforms to elucidate how central transition metals regulate the electronic properties and catalytic behavior of Mo=O sites. Through atomic-precision synthesis and heterogenization on ionic liquid-modified h -BN, a series of MMo 6 -C 4 /BN were constructed and enabled precise structure–activity correlation in oxidative desulfurization (ODS). Among them, NiMo 6 -C 4 /BN exhibits the best performance, achieving 100 % DBT removal within 50 min at 60 °C. DFT calculations reveal that the electron-withdrawing Ni center optimally modulates the Mo d-band center, resulting in the most favorable reaction energetics, which fundamentally explains the superior activity. Furthermore, Radical trapping and electron paramagnetic resonance (EPR) measurements identified • OH and • O 2 − as the key reactive species involved in the oxidation process. The catalyst also demonstrated strong practical potential by achieving a 69 % desulfurization rate in real diesel. This work establishes a general strategy for electronic tuning in POM catalysts and provides molecular-level insights into active site engineering for advanced oxidative catalysis.
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RSC Advances
·
2025
·Vol. 15
·期 15
·12028-12041
·
IF 4.6
Wen Xuan Zheng,Tian Xiang Li,Yu-hui Xie,Ya Dong Lv,De Long Xie,Feng Wu
Multi-colored carbon dots (CDs) have attracted significant research interest due to their wide range of applications. However, the mechanisms underlying their luminescence and regulation still require further exploration. Herein, blue, green, and orange CDs with different quantum yields were successfully prepared, by changing the thermal degradation behavior of the waste wheat bran/o-phenylenediamine via adjusting the pH of the acidic hydrothermal conditions. The structure–photoluminescence property relationship of the prepared multi-colored CDs was thoroughly analyzed and discussed, aiming to provide new insights into the luminescence red-shift mechanisms of CDs. It was found that the larger sp2 domains, higher graphitization of carbon cores, increased graphitic nitrogen, and elevated levels of CO functional groups contribute to the CDs' lower band gap, resulting in a red-shift of the emission fluorescence. Among them, the elevated levels of CO functional groups are normally neglected for their contribution in the red-shift of CDs. Additionally, the prepared CDs were explored for their application in monitoring Fe3+ content in aquatic environments. A detection limit of 378.76 nM was obtained for the prepared CDs.
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高影响因子
Inorganics
·
2025
·Vol. 13
·期 8
·275
·
IF 3
Hongmei Wang,Xiaoxu Zhang,Yifei Niu,Zichuan Ma
The recovery and control of volatile organic compounds (VOCs) have gained significant attention. Supported sulfonic acid materials show potential in converting aromatic VOCs into non-volatile sulfonic acid derivatives. However, their effectiveness is closely tied to the anchoring state of the sulfonic acid groups. In this study, two supported sulfonic acids, SSA@CdO and SSA@CaO, were synthesized via the respective reactions of CdO and CaO with chlorosulfonic acid to investigate how the properties of the supports influence sulfonic acid anchoring and reactivity towardo-xylene. Comprehensive characterization and performance tests revealed that sulfonic acid groups on CdO were covalently bonded, forming positively charged sites ([O0.5Cd–O]ɗ−–SO3Hɗ+) with high loading (9.7 mmol/g), enabling excellento-xylene removal (≥95.6%) and adsorption capacity (51.67–91.59 mg/g) at 130–150 °C. In contrast, ion-paired bonding on CaO formed negatively charged sites ([O0.5Ca]+:OSO3H−), which were inactive in electrophilic sulfonation. This work provides new insights for enhancing supported sulfonic acid materials in VOC treatment.
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Redox Biology
·
2019
·
IF 7.793
Shen-Fei Wang,Xin Liu,Mo-Yu Ding,Shuangcheng Ma,Jing Zhao,Ying Wang,Shaoping Li
Reducing agents are crucial for the management of maladaptive inflammation-induced macrophage death and hematopoietic toxicity of chemotherapy. 2- O - β - d -glucopyranosyl- l -ascorbic acid (AA-2 β G), a unique AA (or vitamin C) derivative identified in Lycium barbarum , exhibited enhanced free radical scavenging activity compared with AA and its synthetic derivative AA-2 α G. AA-2 β G protected hydrogen peroxide-induced cell death in murine macrophage RAW264.7 cells. Treatment with AA-2 β G eliminated oxidative stress and the ratio of cellular glutathione to glutathione disulfide more effectively than AA and AA-2 α G. AA-2 β G also significantly reduced the fluorescent intensity of DCFH-DA triggered by chemotherapeutic agent camptotehcin-11 but not fluorouracil. AA, AA-2 α G, and AA-2 β G significantly decreased Keap-1expression, and increased the expression levels of nuclear factor E2-related factor 2 (Nrf2) and heme oxygenase-1. All compounds triggered the nuclear translocation of Nrf2, while the ability of AA-2 β G to enhance the Nrf2-DNA binding affinity was approximately two fold as those of AA and AA-2 α G. Sodium ascorbate cotransporters (SVCT) inhibitors, sulfinpyrazone, phloretin, and 3- O -methyglucose, potently abrogated the free radical scavenging activities of AA, AA-2 α G, and AA-2 β G. The cellular uptake efficacy of AA-2 α G and AA-2 β G was less than 10% of AA, while the inhibition of SVCT with sulfinpyrazone considerably diminished the uptake efficacy of these compounds. AA-2 α G and AA-2 β G are more stable in the Fenton reagents than AA. In summary, AA-2 β G from L. barbarum with excellent free radical scavenging activity is a promising natural AA derivative for further pharmacological evaluation.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Shuyu Tang,Hongxi Zhang,Ji Li,Jun Huang,Liang Wei,Jing Yang,Xiande Yang
The valorization of lignin into valuable chemicals is a cornerstone of future biorefineries, but it is often hindered by the need for harsh reaction conditions. Electrochemical oxidation offers a promising green alternative, yet many systems lack mechanistic clarity, which impedes rational design. Herein, we report a simple and highly efficient electrochemical system using tetrabutylammonium tetrafluoroborate (TBABF4) in methanol for the selective cleavage of lignin’s β-O-4 ether bond under ambient conditions. On a model compound, this metal-free system achieved over 97% conversion with excellent selectivity toward high-value aldehyde products. Mechanistic studies revealed a dual-pathway mechanism. Crucially, when this mechanistically guided protocol was applied to bagasse lignin, it demonstrated effective depolymerization, leading to the significant cleavage of native β-O-4 bonds, resulting in a total liquid product yield of 15.6%, which included valuable aromatic products such as benzaldehyde dimethyl acetal (7.9% yield). This work not only presents a practical method for lignin upgrading but also provides a clear mechanistic roadmap for the future design of selective electrocatalytic processes.
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CARBOHYDRATE RESEARCH
·
2025
·
IF 2.5
Wanjun Jin,Cheng Li,Chengjian Wang,Ming Wei,Yuanlin Sun,Qingzhen Yang,Zhongfu Wang,Linjuan Huang
N/O -glycans in various human seminal plasma (hSP) glycoproteins, especially α2,3- and α2,6-sialylation levels, are closely associated with semen quality. However, effective differentiation of sialyl linkage isomer remains unachieved. Here, we employed our previously developed glycoqueuing strategy for isomer-specific quantitative analysis of sialylated N/O- glycans released from hSP. A total of 21 exclusively α2,6-sialylated and 14 α2,3-sialylated (bearing α2,3-linked sialic acids) N- glycan isomers were detected, and the relative abundance of α2,6-sialylation among these sialylated N -glycans reached 61.40 %. For O -glycans, seven monosialic and five disialylated species were observed, and all were confirmed to be α2,3-sialylated. Nonsialylated N/O- glycan isomers were simultaneously quantified via hydrophilic interaction liquid chromatography-tandem mass spectrometry. Specifically, 21 nonsialylated N- glycan isomers were identified, among which the relative abundances of oligomannose-type and complex-type glycan were each approximately 50 %. All O- glycans exhibited core 1 or core 2 structures, including 12 α2,3-sialylated and 26 nonsialylated species. Notably, four isomers separated from two newly discovered nonsialylated O -glycan compositions H2N1F1 and H2N1F2 (H: hexose, N: N- acetylgalactosamine, F: fucose) were identified in hSP. Additionally, sialylated and nonsialylated N/O- glycans were all highly fucosylated (16.98 %–67.92 %), and bore numerous Lewis X and Lewis Y structures. The detailed glycan structural and distribution data, particularly α2,3/α2,6-sialylation profiles, not only provides a reference for constructing the hSP glycomic fingerprint, but also supports in-depth investigation of hSP glycan functions in reproduction and exploration of novel glycan markers for clinical semen quality detection.
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危险品化学品经营许可证（带存储）