SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jianglong Shi,Chen Sun,Zongli Huo,Jia Gu,Jun Ma
This study demonstrated the synergy between peroxymonosulfate (PMS) and p- benzoquinone ( p -BQ) in the sulfamethoxazole (SMX) degradation under the ultraviolet (UV) irradiation. In the UV/ p -BQ/PMS process, the SMX degradation showed positive dependence on the initial dosages of PMS, p -BQ and SMX. The variation of the observed pseudo-first-order rate constant ( k obs ) exhibited aligned with the speciation of SO 5 2− across pH 7–10, and the anomalous decline of k obs emerged at pH 10–12. It suggested that SO 5 2− might be significant for the SMX degradation. The quenching experiments and the electron paramagnetic resonance spectroscopy confirmed the dominant reactive oxygen species (ROS) (i.e., sulfate radicals (SO 4 •– ), hydroxyl radicals (OH • ), singlet oxygen ( 1 O 2 ), peroxymonosulfate anion radical (SO 5 •– )) in the UV/ p -BQ/PMS process. The generation of SO 5 •– might be attributed to the single electron transfer (SET) mechanism from PMS to the triplet excited-state of p -BQ, which subsequently triggered the formation of SO 4 •– and 1 O 2 via disproportionation. The possible degradation pathways of SMX were identified by LC-MS, including the hydroxylation, the cleavage of S N bond, the nitration and the oxidation of amino group. Compared to p -BQ, methyl- p -benzoquinone, with an electron donating group, was found to suppress the activation of PMS, which validated the rationality of the SET mechanism. While tetrachloro-1,4-benzoquinone, with an electron withdrawing group, inhibited the SMX degradation by scavenging the generated radicals. Furthermore, the coexisting ions made no diffidence to the SMX degradation. The results provided the critical insights into the role of quinones in the PMS-based advanced oxidation processes for water treatment.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Fei Li,Huanshun Yin,Yan Chen,Siyu Wang,Jingyan Li,Yuemei Zhang,Chunxiao Li,Shiyun Ai
DNA formylation (5-formylcytosine, 5fC) is a major epigenetic modification involved in alterations in the DNA double helix structure and protein identification. Due to the low amount in all mammalian tissues and cells, it is necessary to develop a rapid, sensitive and efficient method for detecting 5fC for further understanding the biological functions of 5fC. Thus, a novel PEC biosensor was constructed using P-g-C 3 N 4 -WS 2 nanocomposite as photoactive material. Firstly, AuNPs/P-g-C 3 N 4 -WS 2 /ITO electrode was prepared as substrate electrode. Secondly, the probe DNA and complementary DNA (containing 5fC base) was modified to the electrode surface based on the formation of Au-S bonds between AuNPs and thiol group on the probe DNA and hybridization, respectively. Finally, the amino functionalized MnO 2 nanoflowers were further modified to the electrode surface by covalent interaction between the aldehyde group on the 5fC and the amino group on MnO 2 nanoflowers. The sensitive and specific detection of 5fC can be achieved by oxidizing ascorbic acid with MnO 2 nanoflowers and quenching the photoactivity of P-g-C 3 N 4 -WS 2 nanocomposite. The sensor has a detection range of 0.01–200 nM and a detection limit of 3.8 pM. Moreover, this sensor has excellent detection specificity, stability and reproducibility.
研究领域:
生物化学
·
分析化学
·
表观遗传学
·
纳米技术
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DOI
PubMed
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Xuchun Chen,Guangliang Lin,Pei Liu,Zhiqin Sun,Yuchang Si,Qinglun Wang,Lifang Jiao
The P’2-type layered oxides attract much attention as viable cathode materials for sodium-ion batteries (SIBs), due to their high specific capacity and environmental friendliness. Nevertheless, the sluggish Na + diffusion kinetics and drastic capacity decay triggered by irreversible phase transition limit their large-scale application. In this study, we employ a synergistic optimization strategy involving cation and anion dopants to successfully restrain intergranular strain and tune local electronic structure, strengthening structural stability and electrochemical performance of the cathode material. Specifically, the Mg 2+ dopant suppresses Na + /vacancy rearrangement and Mn-O anisotropic changes, while the F − dopant facilitates Na + transport and alleviates phase evolution in high-voltage regions. Through this co-doping design, the modified electrodes display more alleviated voltage decay and exceptional capacity retention enhancements ranging from 6.57 % to 81.23 % after 750 cycles at 1000 mA g –1 . This work provides novel perspectives on precise design of cathode materials, making layered oxides promising contenders for the next generation energy storage systems.
研究领域:
材料科学
·
能源存储技术
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DOI
高影响因子
Advanced Powder Materials
·
2025
·
IF 24.9
Yang Li,Bin Sun,Ying Li,Chong Zhang,Pu-Jun Jin,Xin Wang,Bao Yu Xia,Yu Chen,Xuan Ai
The large-scale implementation of direct ethylene glycol fuel cells (DEGFCs) relies on the design of catalysts that possess exceptional activity, durability, and efficient C–C bond breaking ability. However, Pt and Pd-based nanomaterials continue to face challenges of low selectivity and slow reaction kinetics in driving the complete oxidation of ethylene glycol to CO 2 . In this work, a facile one-pot reduction method is reported for controllable synthesis of PtBi nanodendrites (PtBi-NDs) composed of ultrathin bimetallene subunits. In alkaline media, the composition optimized PtBi-NDs demonstrate outstanding activity and strong resistance to CO poisoning during the ethylene glycol oxidation reaction (EGOR). The PtBi-NDs show 5.8-fold higher mass activity, enhanced stability, and superior C1 selectivity relative to commercial Pt nanoparticles (Pt c-NCs). Most strikingly, PtBi-NDs deliver a higher power density (8.3 mW cm –2 ) than Pt c-NCs in DEGFCs. The theoretical analysis and experimental measurements explain that the introduction of Bi element into Pt induces d–p orbital hybridization and promotes electron transfer from Bi to Pt, thereby facilitating C–C bond cleavage and boosting EGOR kinetics. This work establishes an effective strategy for constructing Pt-based ultrathin bimetallenes and offers fundamental insights into boosting EGOR performance via d-p orbital hybridization.
研究领域:
电催化
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纳米材料化学
·
能源化学
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物理化学
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燃料电池
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表面科学
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Xiangling Wang,Zhimin Li,Zhengfu Zhang,Chengping Li,Rui Bao,Zhishan Li,Jinsong Wang
Elevating the lattice oxygen p -band center (ε p ) is critical to trigger the lattice oxygen mechanism (LOM) for boosting oxygen evolution reaction (OER) activity in advanced electrocatalysts, but it also causes a reduced d -band center (ε d ) due to the coupled metal-oxygen d - p orbital, resulting in a sluggish regeneration of lattice oxygen. Herein, we surmount this challenge by heterojunction and defect-engineering to raise both ε d and ε p of CeO 2 NPs/D-Ni(OH) 2 . The formative built-in electric field and defect reduce the electronic density of Ni(OH) 2 , effectually decreasing the deprotonation energy and promoting its surface reconstruction into γ-NiOOH, the formative high valence Ni δ+ raises ε p to trigger LOM. Meanwhile, the ε d is upshifted by the high f -band of CeO 2 , accelerating the adsorption of oxygenous species to replenish the lattice oxygen vacancies. Consequently, the CeO 2 NPs/D-Ni(OH) 2 demonstrates exceptional OER activity, requiring only 169 mV to reach 10 mA cm −2 , and maintains impressive stability over 300 h at 1000 mA cm −2 in 1 M KOH. This work presents a novel strategy to balance lattice oxygen participation and regeneration by rising d - p orbital for inducing and maintaining LOM activity.
研究领域:
电催化
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材料科学
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物理化学
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能源化学
·
纳米材料
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DOI
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Dengqi Zhou,Ke Zeng,Liqiang Wang,Feiying Tang
The development of highly efficient non-noble metal catalysts for the hydrogenation of N-heteroarenes under mild condition is of great importance for both theoretical and industrial applications, which can efficiently reduce energy consumption and environmental pollution. In this work, we found that the prepared CoCu nano-alloy catalyst after exposed in the air over 24 h (named Co 1 Cu 1 /C) exhibited a dramatically improved catalytic performance (yield from trace to >99%) for quinoline hydrogenation under mild reaction conditions (60 °C, 3 MPa H 2 ). According to the characterization, the catalyst Co 1 Cu 1 /C exhibited the strong interaction between Co and Cu. Meanwhile, it was endowed with a stable partial oxidation surface. The unsaturated oxygen coordinated surface of Co 1 Cu 1 /C presented a moderate binding for quinoline and 1, 2, 3, 4-tetrahydroquinoline, which could efficiently avoid the deactivation of catalyst and favor the hydrogenation kinetics. The density functional theory (DFT) calculations coupled with X ray-based structural analyses suggested that the unsaturated oxygen coordinated surface could lower the diffusion energy of the active hydrogen species and the reaction barrier for quinoline hydrogenation which resulted from the d - p orbital electron coupling. This work revealed that the catalytic performance of nano-alloy catalysts might not only be ascribed to the interaction between metals, while the unsaturated oxygen coordination of metallic surfaces played an important role.
研究领域:
催化化学
·
材料科学
·
理论化学
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DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Tinglei Wang,Lu Zhang,Laipeng Sun,Jiaqi Zhao,Yuan Wang,Zexing Qu,Yu Wang
The site-specific boron-doped graphitic carbon nitride (B-g-C3N4-20) has been synthesized via precise solid-state synthesis methods. Thermodynamic analysis indicates that its excellent reproducibility stems from similar activation energies of the dehydration and condensation reactions involving phenylboronic acid and melamine, as well as the dehydration polymerization of melamine with cyanuric acid. It allows both reactions to occur concurrently, leading to the orderly arrangement of intercalated molecules within the carbon nitride nanosheets, facilitating targeted boron incorporation. The boron atoms of the intercalated molecules not only form triple bonds with nitrogen atoms, horizontally arranging in an ordered manner, but also vertically interact with tertiary nitrogen atoms of the carbon nitride nanosheets. This dual-directional ordered interaction between boron and nitrogen creates atomic-scale p–n junctions at the microscopic level and exhibits a pronounced p–n junction effect at the macroscopic level. Such structural characteristics significantly improve the transport pathways for photogenerated charge carriers, resulting in a remarkable increase in photocatalytic performance with a hydrogen peroxide production rate 30 times higher than that of pure graphitic carbon nitride under neutral conditions. This work not only offers additional perspectives for advancing solid-state synthesis methods but also serves as an innovative example for the development of other functional materials.
研究领域:
材料科学
·
纳米技术
·
催化
·
固态化学
·
可再生能源
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产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2017
·Vol. 27
·期 2
·413-418
·
IF 2.594
Yanyun Zhang,Xichuan Yang,Weihan Wang,Xiuna Wang,Licheng Sun
X1 (MeO-TPD) is an inexpensive and easily synthesized π -conjugated molecule that has been used as a hole-transport material (HTM) in solid-state dye-sensitized solar cells (ssDSSCs), achieving relatively high efficiency. In this paper, we characterize the physicochemical properties of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and show that it is a promising p-dopant in a spin-coating solution with X1 as the HTM. The doped ssDSSCs showed an increase in short-circuit current density from 5.38 mA cm –2 to 7.39 mA cm –2 , and their overall power conversion efficiency increased from 2.9% to 4.3%. Also, ssDSSCs with DDQ-doped X1 were more stable than the undoped samples, demonstrating that DDQ can act as a p-type dopant in X1 as an HTM for highly efficient, stable ssDSSCs.
研究领域:
材料科学
·
能源化学
·
光伏技术
·
纳米材料
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半导体器件
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表面化学
·
电化学
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DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 18
·2309844
·
IF 27.4
Rundong Fan,Wei Sun,Congmeng Li,Yihua Chen,Haipeng Xie,Yongli Gao,Yue Ma,Zongyang Peng,Zijian Huang,Ruiyang Yin,Fengtao Pei,Wentao Zhou,Yuetong Wu,Huifen Liu,Kailin Li,Tinglu Song,Dechun Zou,Huachao Zai,Hui Li,Qi Chen,Qian Wang,Huanping Zhou
Metal halide perovskite solar cells (PSCs) have garnered much attention in recent years. Despite the remarkable advancements in PSCs utilizing traditional metal electrodes, challenges such as stability concerns and elevated costs have necessitated the exploration of innovative electrode designs to facilitate industrial commercialization. Herein, a physically and chemically stable molybdenum (Mo) electrode is developed to fundamentally tackle the instability factors introduced by electrodes. The combined spatially resolved element analyses and theoretical study demonstrate the high diffusion barrier of Mo ions within the device. Structural and morphology characterization also reveals the negligible plastic deformation and halide-metal reaction during aging when Mo is in contact with perovskite (PVSK). The electrode/underlayer junction is further stabilized by a thin seed layer of titanium (Ti) to improve Mo film's uniformity and adhesion. Based on a corresponding p–i–n PSCs (ITO/PTAA/PVSK/C 60 /SnO 2 /ITO/Ti/Mo), the champion sample could deliver an efficiency of 22.25%, which is among the highest value for PSCs based on Mo electrodes. Meanwhile, the device shows negligible performance decay after 2000 h operation, and retains 91% of the initial value after 1300 h at 50–60 °C. In summary, the multilayer Mo electrode opens an effective avenue to all-round stable electrode design in high-performance PSCs.
研究领域:
材料科学
·
光伏技术
·
能源材料
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薄膜技术
·
器件物理
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DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2025
·
IF 3.5
Wang Liping,Tao Xin,Li Renxing,Jiang Lirong,Chen Lin,Li Bingqian
Hydrogen is recognized as a clean and efficient energy carrier, and photocatalytic hydrogen generation represents a pivotal technology for sustainable energy development. In this work, a highly active noble metal-free ZnCo 2 O 4 /ZnO/C composite has been successfully synthesized via in situ carbonization of a ZnCo-based Prussian blue analogue (PBA), exhibiting remarkable photocatalytic hydrogen generation activity. Under simulated solar irradiation, the optimized composite achieves a high hydrogen generation rate of 2039.3 μmol/(g·h), along with excellent stability. The significantly enhanced photocatalytic activity originates from a unique S-scheme heterojunction charge transfer mechanism and multi-component synergistic effects. Specifically, the intimate interfacial contact among graphitic carbon, ZnCo 2 O 4 , and ZnO facilitates efficient separation and migration of photogenerated electron–hole pairs. The S-scheme mechanism not only preserves photogenerated electrons with strong reduction capability but also enhances charge carrier utilization. Furthermore, the graphitic carbon improves the electrical conductivity and light-harvesting capability. These factors are responsible for the remarkable photocatalytic performance and good stability. This work provides a compelling demonstration of utilizing PBA-derived carbonization as a versatile platform for fabricating efficient, stable, and scalable photocatalysts for practical hydrogen production.
研究领域:
材料化学
·
光催化
·
能源科学
·
纳米材料
·
可持续能源
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DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2020
·Vol. 412
·期 4
·915-922
·
IF 3.637
Wu Zhi-Wei,Xie Xing-Chen,Guo Hong-Ran,Xia Huan,Huang Ke-Jing
A tetrahedral DNA probe can effectively overcome the steric effects of a single-stranded probe to obtain well-controlled density and minimize nonspecific adsorption. Herein, a highly sensitive electrochemical biosensor is fabricated for determination of protein using a tetrahedral DNA probe and rolling circle amplification (RCA). N- and P-co-doped graphene (NP-rGO) is prepared, and AuNPs are then electrodeposited on it for DNA probe immobilization. Benefitting from the synergistic effects of the excellent electrical conductivity of NP-rGO, the stability of the tetrahedral DNA probe and the signal amplification of RCA, the biosensor achieves a low limit of 3.53 × 10 −14 M for thrombin and a wide linear range from 1 × 10 −13 to 1 × 10 −7 M. This study provides a sensitive and effective method for the detection of protein in peripheral biofluids, and paves the way for future clinical diagnostics and treatment of disease.
Graphical abstract
研究领域:
生物化学
·
分析化学
·
生物传感器
·
分子诊断
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DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-18
·
IF 15.7
Li Taiguang,Chen Butian,Wang Tenghui,Liu Chong,Yin Wen,Mao Qianjiang,Zhou Dongxu,Hao Yongmei,Liu Xiangfeng
Solid-state sodium metal batteries have attracted great interest because of their improved safety and abundant Na resources. However, the interfacial resistances and instabilities induced by parasitic reactions, together with Na dendrite issues, result in reduced rate capability and poor cycling stability. Here, we address these challenges by intrinsically inhibiting parasitic interfacial redox reactions through enhanced P-O covalency in Na 3 Zr 2 Si 2 PO 12 (NZSP) with Na 2 SiF 6 incorporation, wherein the high electronegativity of F strengthens P-O covalency. Additionally, SnF 2 coating provides a sodiophilic surface and stabilizes the NZSP interface, which is essential for effective electrochemical cycling. This integrated approach significantly reduces interfacial impedance to 2.0 Ω cm 2 , enabling stable Na plating/stripping for 3600 hours at 0.5 mA cm -2 /0.25 mAh cm -2 . The full cell with Na 3 V 2 (PO 4 ) 3 positive electrode demonstrates stable cycling with high-rate capability (87.5% capacity retention after 2500 cycles at 1 C and 96.1% capacity retention after 1200 cycles at 5 C). This study sheds light on the development of high-performance quasi-solid-state sodium batteries.
研究领域:
储能技术
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材料科学
·
电化学
·
固态电池
·
界面工程
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）