SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yuning Zhang,Jian Zhang,Tiantian Yang,Xinyan Wang,Haina Bai,Xin Cheng
Oxygen-bridged S-scheme Bi 2 WO 6 /FeOCl achieves 93% DCF and 91% CBZ removal. • Self-Fenton/PMS synergy generates multiple ROS (SO 4 ·− , ·OH, 1 O 2 , ·O 2 − , h + ). • System sustains >85% removal in real waters and > 90% in 300-min flow test. The built-in electric field at oxygen-bridge-connected heterojunctions is a key driving force for regulating S-scheme charge separation and PMS activation. To address the challenge of removing persistent pharmaceutical and personal care products (PPCPs) from water, a Fe–O–W/Fe–O–Bi double‑oxygen-bridge interface was precisely engineered using an in-situ hydrothermal growth strategy, leading to the successful preparation of a direct S-scheme Bi 2 WO 6 /FeOCl heterojunction. The built-in electric field within the interface significantly promotes the directional separation of charges, enhancing light absorption and carrier utilization efficiency. The optimal Bi 2 WO 6 /FeOCl ratio (3:1) efficiently degrades DCF and CBZ in a visible light/PMS system, exhibiting good activity in the pH range of 5–7 with a moderate decrease at pH 9, along with strong resistance to water matrices. The system sustains >90% removal for 300 min in a continuous-flow reactor. Radical trapping and EPR confirm synergistic interactions among SO 4 ·− , ·OH, ·O 2 − , 1 O 2 , and h + , further enhanced by the self-Fenton effect. DFT and LC-MS analyses elucidate the transformation pathways of DCF and CBZ. TOC tests verify that only partial mineralization is achieved under current conditions, and toxicity assessments confirm significantly reduced ecological risks of residual intermediates. This study provides an efficient and stable photocatalytic-PMS synergistic system for PPCPs-contaminated water remediation.
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Solar RRL
·
2026
·Vol. 10
·期 18
·e70488
·
IF 4.8
Jinze Li,Jiahao Gan,Ming Sheng,Mengyang Xu,Yining Zhang,Xiang Liu,Pengwei Huo
The accumulation of antibiotic pollutants in aquatic environments poses threats to ecosystems. Photocatalysis is a promising approach for removing these pollutants, but conventional powder photocatalysts often suffer from difficult recovery and poor stability. Therefore, developing efficient, stable, and easily recoverable catalytic materials is important. In this study, 2D g-C 3 N 4 and MoS 2 were immobilized in a polyvinylidene fluoride (PVDF) membrane to prepare a g-C 3 N 4 /MoS 2 /PVDF piezo-photocatalytic composite membrane. Under the combined action of visible light and mechanical vibration, the membrane achieved a TC degradation efficiency of 76.54%, indicating a synergistic enhancement between piezoelectric polarization and photocatalysis. The formation of C─S bonds at the g-C 3 N 4 /MoS 2 interface enhanced electronic coupling between the two phases, promoting directional migration and spatial separation of photogenerated carriers. Meanwhile, the piezoelectric built-in electric field generated by PVDF under ultrasonic excitation further suppressed carrier recombination and accelerated interfacial charge transfer. Overall, the g-C 3 N 4 /MoS 2 /PVDF membrane shows good visible-light response, piezoelectric-assisted charge separation, mass transfer, recyclability, and stability, offering a new approach for antibiotic wastewater treatment and related membrane material design.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Feitao Fan,Yiting Che,Vadim Efimov,Kuzmin Anton,Shitan Yan,Ting Bian
Developing efficient and durable platinum-based catalysts for the oxygen reduction reaction (ORR) is a major challenge. In this work two Platinum-Zinc Hofmann-type Metal-Organic Frameworks are synthesized by ligand regulation, one with 4,4′-dipyridyl disulfide introducing sulfur and the other with 4,4′-azopyridine as a sulfur-free analogue. After pyrolysis, the sulfur-containing precursor yields small Pt nanoparticles embedded in a sulfur and nitrogen co-doped carbon matrix (Pt/SNC), while the sulfur-free precursor forms intermetallic L1₀-PtZn on nitrogen-doped carbon (L1 0 -PtZn/NC). Zn evaporation and S/N co-doping in Pt/SNC optimize Pt dispersion, tune electronic structures, and strengthen Pt–carbon interactions, whereas the absence of sulfur stabilizes the L1₀-PtZn phase. Pt/SNC shows much smaller particle sizes (~4.98 nm) than L1 0 -PtZn/NC (~10.61 nm) and exhibits the best ORR performance with a half-wave potential of 0.88 V, surpassing Pt/C (0.86 V) and L1 0 -PtZn/NC (0.79 V). Its specific and mass activities are 1.6/1.8 times higher than Pt/C and 2.85/6.4 times higher than L1 0 -PtZn/NC. Durability tests confirm that Pt/SNC retains 78 % of its mass activity after 60,000 cycles. These results demonstrate the effectiveness of ligand regulation and S/N co-doping in designing high-performance Pt-based electrocatalysts.
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Scientific Reports
·
2025
·Vol. 15
·期 1
·1-13
·
IF 3.9
Jeong Ji-Soo,Kim Jeong-Won,Kim Jin-Hwa,Kim Chang-Yeop,Chung Eun-Hye,Boo So-Young,Giorgi Mario,Ko Je-Won,Kim Tae-Won
Korean red ginseng (KRG, Panax ginseng C.A. Meyer) contains ginsenosides, which are metabolized into active metabolites with various pharmacological effects. This study assessed the in vivo exposure and accumulation of ginsenosides following single and repeated administration of KRG and its active ingredient, compound K, in experimental rodents. In Study 1, rats received KRG (2 g/kg) orally as a single dose or for 2, 4, and 8 wks. Repeated administration increased the maximum plasma concentrations (C max ) of ginsenosides Rb1 and Rd compared to a single dose (Rb: 23.9 to 68.3 ng/mL; Rd: 8.5 to 30.8 ng/mL over 8 wks). Compound K was detected at 2.9 and 2.3 ng/mL of C max after 4 and 8 wks of continuous KRG administration, with no significant differences. In Study 2, oral administration of compound K (5 or 10 mg/kg) in rats resulted in accumulation factors of 4 and 7, respectively. Study 3 evaluated the oral bioavailability of compound K in mice (intravenous, 2 mg/kg; oral, 10 mg/kg), estimating it at approximately 12%. Additionally, network pharmacology and molecular docking simulation studies supported the clinical potential of compound K against inflammation-related diseases. These findings suggest that for substances like KRG, which undergo in vivo metabolic conversion after administration, repeated KRG administration alters pharmacokinetic profiles and should be taken into consideration in its application.
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PubMed
高影响因子
ACS Applied Optical Materials
·
2026
·
IF 3.4
Shichao Rao,Wentao Niu,Zhongwei Man,Xiulin Xie,Zhe Yin,Yue Qin,Shuaibing Wang,Ouyang Lin,Aiwei Tang
The advancement of environmentally benign I–III–VI colloidal quantum dots (QDs) has established a promising materials platform to replace cadmium-based counterparts. However, in practical device architectures, especially blue-emitting devices, abundant surface nonradiative recombination centers and imbalanced carrier injection often lead to suboptimal device performance, thereby hindering their deployment in display technologies. Herein, we employ a zinc iodide (ZnI2) post-treatment for the Cu–Ga–Zn–S (CGZS) QDs film strategy, effectively passivating surface defects and nonradiative sites, thereby enhancing device performance. The treated QDs facilitate the formation of an interface dipole, which effectively elevates the overall energy levels of the QDs while simultaneously reducing the hole injection barrier, leading to an enhanced hole injection efficiency. Working in concert, these effects facilitate balanced carrier injection and optimize exciton recombination, thereby boosting the device efficiency and operational stability. Consequently, the peak external quantum efficiency (EQE) exhibits a favorable improvement, increasing from 1.01% in the pristine device to 1.90% after treatment. This work offers an effective approach to achieving balanced carrier injection in quantum-dot light-emitting diodes (QLEDs) and establishes a solid foundation for the development of high-performance, cadmium-free, blue-emitting QLEDs.
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.3
Mingyang Hu,Ying He,Yunying Wang,Hongzhi Du,Liang Wang,Jie Yang,Yun Liu
The methanolysis of polyethylene terephthalate (PET) to produce dimethyl terephthalate (DMT) and ethylene glycol (EG) is a promising route for sustainable PET valorization. Conventional metal-based catalysts often suffer from high cost, large loading, low processing capacity, and environmental concerns. Here, we report a nitrogen–sulfur codoped lignin-derived carbon catalyst (S–N@C-800 °C) for oxidative alcoholysis of PET. Under 180 °C and 30 min with a PET-to-catalyst ratio of 250:1, PET conversion reached 99.58%, with EG and DMT yields of 97.67 and 95.37%, respectively. Even at a 600:1 ratio (0.16% catalyst by mass), the system maintained high depolymerization efficiency, highlighting its performance under low catalyst usage and high solid loading. Characterization revealed strong correlations among activity, acid–base sites, nitrogen species, and vacancies. Mechanistic studies using electron paramagnetic resonance (EPR) and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) showed that basic sites activate O2 to generate superoxide (·O2–), which reacts with methanol to form OOH· and CH3O-, while acidic sites activate carbonyl groups, forming carbocations that lower ester bond dissociation energy and facilitate nucleophilic attack. This metal-free, efficient, and environmentally benign catalytic system provides a practical strategy for PET recycling.
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ANALYTICAL LETTERS
·
2026
·
IF 1.8
Junliang Lin,Bingmei Lai,Guxi Huang,Guihua Ruan,Yipeng Huang
Sulfur-doped carbon quantum dots (S-CQDs) were synthesized via a one-pot hydrothermal method using ascorbic acid and thioglycolic acid as precursors. The S-CQDs showed a uniform size distribution, excellent photostability, and bright blue fluorescence with a fluorescence quantum yield of 32.07%. The as-prepared S-CQDs were used as fluorescent probes for the rapid and accurate determination of salicylhydroxamic acid (SHA) in human urine via an “on-off-on” responsive mode. The sensing mechanism involves two steps: initially, Fe3+ quenches the fluorescence of S-CQDs through photoinduced electron transfer (PET); subsequently, SHA competitively coordinates with the Fe3+ on the surface of S-CQDs, leading to the recovery of the fluorescence. Under optimized conditions, this method enabled the determination of SHA in artificial urine over a concentration range of 0.1–120 mg/L, with a limit of detection (LOD) of 0.033 mg/L. The spiked recoveries of SHA in urine samples ranged from 99.55% to 109.28%, with coefficients of variation (CVs) between 2.79% and 6.19%. Meanwhile, the low cytotoxicity of S-CQDs was verified by CCK-8 assays. These results confirm the high accuracy and precision of the proposed method, making it suitable for SHA monitoring in pharmacokinetic studies, pharmaceutical quality control, and clinical diagnostics.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Bin Zhu,Wei Zhang,Zheng Li,Qiyu Wang,Naifeng Wen,Zhian Zhang
Lithium iron oxide (Li5FeO4, LFO) holds great promise in cathode prelithiation additives for lithium-ion batteries. However, it is hard to make full use of the power under high current rates due to its poor air stability and electronic conductivity. The carbon protective layer is an effective approach, and introducing heteroatoms would be beneficial to further improving Li+ kinetics. However, the interplay between the dopants and Li+ is always ignored. Herein, we aim to reveal the interaction among Li+ ions and the defects of carbon layers from nitrogen/sulfur dopants and the corresponding influence on delithiation performances of LFO. It is found that the codoping of nitrogen and sulfur on carbon layers contributes to the boosted capacity and rate capability. The modified SNC@LFO presents a large irreversible capacity (779.3 mAh g–1 at 0.1 C) and excellent rate performance (537.1 mAh g–1 at 1 C), which is up to 16.6 and 64.0%, respectively, compared to LFO.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Li Xiang,Ling Ling,Chi Chaoxian,Ding Chuan-Fan
The development of a rapid analytical method for distinguishing chiral sulfur-containing compounds is essential due to the significant differences in biological activity exhibited by different enantiomers. This work presents a straightforward and rapid method for the chiral discrimination of D/L-homocysteine (D/L-Hcy), D/L-homocystine (D/L-Hcy 2 ), and S-allyl-D/L-cysteine (D/L-SAC) using cyclodextrin (CD) and metal adducts in conjunction with ion mobility-mass spectrometry (IM-MS). Through the formation of ternary complexes, separation was achieved with IM peak resolutions of 1.41 for [α-CD+D/L-Hcy+Co−H] + , 1.24 for [α-CD+D/L-Hcy 2 +Ca−H] + , and 1.65 for [β-CD+D/L-SAC+Fe−H] + . Theoretical calculations were performed to identify the optimal conformations of these ternary complexes. Conformational analysis elucidated distinct structural differences at the molecular level, providing insight into the chiral separation mechanism. Owing to its superior resolving power, this method enables the direct quantification of D/L enantiomers in mixtures. It was successfully applied to the determination of D/L-SAC in garlic samples, obviating the need for laborious sample pretreatment or derivatization steps. Overall, this work establishes a robust analytical platform for the chiral analysis of sulfur-containing amino acids and their derivatives. Graphical abstract
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高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Tao Sun,Shuo Wang,Mengyao Xu,Ning Qiao,Qizhen Zhu,Bin Xu
Sulfurized polyacrylonitrile (PAN@S) is a promising cathode material for room-temperature Na/S batteries but suffers from low conductivity and insufficient electrochemical activity, resulting in unsatisfactory actual capacity and rate performance. Herein, Ti3C2Tx MXene nanosheets are used as a conductive and catalytic binder to establish the PAN@S electrode, wherein MXene constructs a highly conductive framework for fast charge transport and provides high catalytic effect to improve the active material utilization and accelerate the redox kinetics significantly. Therefore, the PAN@S electrode bonded by MXene shows an electronic conductivity of 5.05 S cm–1, 4 orders of magnitude higher than the conventional electrodes bonded by the insulative polymer binders, and much decreased activation energy barrier and resistance. Consequently, the PAN@S electrode displays superior performance in terms of high capacity (697.3 mAh g–1 at 200 mA g–1), unparalleled rate capability (189.0 mAh g–1 at 20 A g–1), and excellent high-rate cycling performance (a capacity decay rate of ∼0.04% per cycle during 1000 cycles at 5 A g–1). This work provides a high-performance electrode for room-temperature Na/S batteries and shows the promising potential of conductive and catalytic MXene binders in boosting the performance of active materials.
研究领域:
储能
·
材料科学
·
电化学
·
电池技术
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Catalysis Science & Technology
·
2022
·Vol. 12
·期 21
·6416-6426
·
IF 6.177
Binxiong Guang,Wei Zhang,Yiwei Zhang,Yahui Xiao,Yong Liu
A novel, efficient and economical process of cyclohexanol (CHOL) production based on cyclohexene esterification–hydrogenation has become a research hotspot in recent years. Wherein, hydrogenation of cyclohexyl acetate (CHA) derived from the esterification of cyclohexene with acetic acid is a crucial step. Combining the advantages of metal complexes and heterogeneous catalysts, the robust Cu(I) coordinated amino-functionalized poly(ionic liquid)s (PILs-Cu(I)) were, in this research, synthesized for use in the mild and highly selective hydrogenation of CHA to CHOL. The results of FT-IR, UV-vis, BET, XPS and SEM-EDS confirmed that the Cu(I) was dominant in the PILs-Cu(I), and was homogeneously and stably coordinated on the amino-functionalized poly(ionic liquid)s. Benefiting from that, the PILs-Cu(I) was endowed with an unprecedented performance in the mild and highly selective hydrogenation of CHA to CHOL. Specifically, 95.6% CHA conversion with 96.6% selectivity of CHOL, and 97.0% selectivity of ethanol was obtained under extremely mild conditions of 80 °C and 2 MPa H2. Furthermore, no significant activity loss was observed over the PILs-Cu(I) after recycling for at least five times, delivering excellent stability and reusability.
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POLYMER INTERNATIONAL
·
2023
·Vol. 72
·期 5
·520-531
·
IF 3.2
Yaqing Wen,Chunshan Lu,Guofei Chen,Xingzhong Fang
Two series of poly(ester-amide-imide)s (PEsAIs) with simultaneously bulky side groups, ester and amide bonds were synthesized by copolymerization of tert -butylhydroquinone bis(trimellitate anhydride), p -phthaloyl chloride and other monomers. These PEsAIs had glass transition temperatures ( T g s) in the range of 231–301 °C, coefficients of thermal expansion (CTEs) of 17–59 ppm K −1 and displayed good mechanical properties with tensile modulus of 2.6–4.5 GPa, tensile strengths of 63–143 MPa and elongations at break of 3.0%–11.7%. All films had good transparency with transmittances at 400 nm ( T 400nm ) of 43%–80%. The introduction of p -phthaloyl chloride successfully improved the properties of the polymer with higher transmittance, higher T g and lower CTE. In particular, PEsAI-b-60 presented the best comprehensive performance with a moderate T g of 301 °C, low CTE of 17 ppm K −1 and high transmittance ( T 400nm ) of 75%. © 2023 Society of Industrial Chemistry.
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