SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yue Wu,Hong Chen,Zhuo Chen,Qingling Guan,Shirui Zhang,Yuhao Huang,Yang Xiao,Yun Liao,Liangshu Xia,Fang Wang
Photocatalytic extraction of uranium from wastewater presents an attractive route for environmental remediation as well as sustainable nuclear energy, aligning with the carbon peaking and carbon neutrality goals. However, conventional g-C₃N₄-based photocatalytic systems suffer from fast electron-hole recombination. To address the challenge, this work innovatively constructed a photocatalytic material using a strategy of K/S co-doping coupled with cyano functionalization. It demonstrated superior U(VI) photocatalytic extraction efficiency, strong anti-interference capability against coexisting ions and excellent recyclability. An extraction efficiency of 95.7% for U(VI) was attained without any sacrificial agent or protective gas. The results indicated the synergy of K/S doping combined with cyano functionalization tailored the band structure and generated high localized electron density. The large molecular dipole induced a built-in electric field (BEF) promoting oriented photo-excited electron movement and thereby enhancing U(VI) photocatalytic extraction. Ultimately, U(VI) ions were enriched on the photocatalyst via deposition of (UO 2 )O 2 ·2H 2 O, driven synergistically by photogenerated electrons and ·O₂ − . This research presents a novel and effective approach for recovering uranium resources from wastewater through photocatalysis.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123628
·
IF 7.5
Yan Wang,Jiang Meng,Siyao Wang,Yuzi Yin,Tianyi Huang,Yue Wang,Jianyu Han
The development of efficient photocatalysts for antibiotic removal remains constrained by the lack of well-defined active sites and severe charge recombination. Herein, a nitrogen-vacancy-rich carbon nitride coupled with mixed-phase bismuth oxide (α-Bi 2 O 3 /β-Bi 2 O 3 /g-C 3 N 4 -nitrogen vacancies, denoted as N V -αβBO) was rationally constructed via NaBH 4 -assisted defect engineering and in-situ phase transformation. The optimized N V -αβBO-4 shows significantly enhanced photocatalytic performance under visible light and rapidly removes tetracycline hydrochloride (TCH). Systematic characterizations show that nitrogen vacancies facilitate O 2 adsorption and activation. Meanwhile, the interfacial coupling among α-Bi 2 O 3 , β-Bi 2 O 3 and defective g-C 3 N 4 (N V -CN-10) promotes directional charge transfer and suppresses carrier recombination. More importantly, a dual S-scheme charge-transfer pathway is established. This pathway preserves photogenerated electrons and holes with strong redox capability, thereby promoting reactive oxygen species (ROS) generation. This work demonstrates a synergistic strategy by integrating defect engineering with phase-junction construction, providing new insights into the design of high-performance photocatalysts for antibiotic wastewater treatment.
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高影响因子
MOLECULES
·
2026
·Vol. 31
·期 11
·1780
·
IF 5.1
Xiaohui Cai,Jun Men,Qingwu Yang,Yili Hu,Zhixian Qiao
A derivatisation-free HPLC–MS/MS method was developed and validated for the simultaneous quantification of selenium- and sulphur-containing amino acids in soybean leaves, and applied to a 3 × 3 factorial hydroponic experiment probing selenium–sulphur metabolic interactions. The method resolves five biologically informative analytes (Cys2, SeCys2, MeSeCys, Met, SeMet) within 1.5 min through multiple reaction monitoring (MRM). Ultrasound-assisted extraction (UAE) of the free fraction was jointly optimised for both analyte classes by the response-surface methodology; enzymatic hydrolysis of the extraction residue recovered the protein-bound fraction on the same platform. Limits of detection ranged from 0.036 to 0.556 µg L−1, intra-day relative standard deviations were below 5%, and spike recoveries fell between 92.3 and 117.4%. Free SeAA and SAA pools were negatively correlated across the nine treatments (R2= 0.83), consistent with competitive Se–S assimilation, whereas bound pools were positively correlated (R2= 0.89), reflecting proportional protein-level incorporation. A regime of 1–5 mM of sulphate with 20 µM of selenite yielded the highest bound organo-Se with near-normal growth, providing leaf-level evidence that may inform future seed-focused studies aimed at Se-enriched soy-protein ingredient development.
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PubMed
高影响因子
Nanomaterials
·
2019
·Vol. 9
·期 5
·738
·
IF 4.034
Yue Yang,Tong Zou,Zhezhe Wang,Xinxin Xing,Sijia Peng,Rongjun Zhao,Xu Zhang,Yude Wang
The fluorescence intensity of N, S co-doped graphene quantum dots (N, S-GQDs) can be quenched by Fe3+and Hg2+. Density functional theory (DFT) simulation and experimental studies indicate that the fluorescence quenching mechanisms for Fe3+and Hg2+detection are mainly attributed to the inner filter effect (IFE) and dynamic quenching process, respectively. The electronegativity difference between C and doped atoms (N, S) in favor to introduce negative charge sites on the surface of N, S-GQDs leads to charge redistribution. Those negative charge sites facilitate the adsorption of cations on the N, S-GQDs’ surface. Atomic population analysis results show that some charge transfer from Fe3+and Hg2+to N, S-GQDs, which relate to the fluorescent quenching of N, S-GQDs. In addition, negative adsorption energy indicates the adsorption of Hg2+and Fe2+is energetically favorable, which also contributes to the adsorption of quencher ions. Blue fluorescent N, S-GQDs were synthesized by a facile one-pot hydrothermal treatment. Fluorescent lifetime and UV-vis measurements further validate the fluorescent quenching mechanism is related to the electron transfer dynamic quenching and IFE quenching. The as-synthesized N, S-GQDs were applied as a fluorescent probe for Fe3+and Hg2+detection. Results indicate that N, S-GQDs have good sensitivity and selectivity on Fe3+and Hg2+with a detection limit as low as 2.88 and 0.27 nM, respectively.
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高影响因子
Green Chemical Engineering
·
2026
·
IF 11.9
Kexin Wei,Haoyang Yu,Fan Yang,Yang Sun,Shijia Li,Jiabao Guo,Yongfeng Li
To advance the development of high-performance rechargeable zinc-air batteries (ZABs) with efficient oxygen electrochemistry, significant progress is needed in research on Fe-based nanoparticle/single-atom bifunctional oxygen electrocatalysts. Nevertheless, the structure-activity relationship and synergy mechanism of Fe-based nnoparticle/single-atom hybrid catalysts are not well-known. Herein, Self-supported carbon nanofiber electrocatalysts with in-situ synthesized FeS, Fe 2 P, or Fe 3 C nanoparticles and atomically dispersed Fe-N x sites were prepared in this work by the coaxial electrospinning method. X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) simulations showed that there was a significant change in charge distribution, an increase in the adsorption of *O intermediates, and a decrease in the *OH desorption energy barrier at the FeS/FeSA interface. It can be concluded that FeS/FeSA has better electronic and adsorption properties than Fe 2 P/FeSA and Fe 3 C/FeSA. Therefore, FeS/FeSA has an oxygen reduction reaction (ORR) half-wave potential of 0.89 V and an oxygen evolution reaction (OER) overpotential of 240 mV at 10 mA/cm 2 , which is relatively high compared with that of Fe 2 P/FeSA (0.79 V, 260 mV) and Fe 3 C/FeSA (0.77 V, 250 mV), and it has a small potential gap (Δ E ) of 0.58 V. FeS/FeSA can be used as the air cathode in liquid ZABs; it has a high peak power density of 116 mW/cm 2 and is stable for more than 150 hours. The above results have laid the foundation for the construction of high-performance air cathode catalysts by means of effective coupling of atomic nanoparticles and shown the direction for developing high-efficiency, long-life rechargeable zinc-air batteries.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Jiahui Xu,Jia-qi Bai,Wenjie Si,Yunhai Zhang,Jiazhao Tan,Mengdie Cai,Qin Cheng,Song Sun
Non-noble metals have attracted worldwide attention for the catalytic hydrogenation of halonitrobenzene due to their high activity, low price, and abundance on Earth. However, the construction of effective and stable non-noble-metal catalysts for the selective hydrogenation of halonitrobenzene to haloaniline by a simple method remains challenging. Herein, we report a facile one-pot method for the synthesis of N,S-co-doped mesoporous carbon-supported non-noble-metal catalysts through carbonization of a mixture of metallic precursors and 2-aminothiazole in molten ZnCl2. The prepared Co-NSPC catalyst showed excellent activity and selectivity with a turnover frequency of 84.4 h–1 in the hydrogenation of p-chloronitrobenzene to p-chloroaniline. Furthermore, Co–Nx was found to be the main active site for this reaction on the basis of characterization and experimental data, and the introduction of S promoted the formation of Co–Nx sites. Moreover, the Co-NSPC-800 catalyst can be reused at least four times and applied to the hydrogenation of 10 kinds of halogenated nitrobenzenes with excellent selectivity.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Nuanfei Zhu,Kuijing Yuan,Dinghui Xiong,Fengxiang Ai,Kun Zeng,Biying Zhao,Zhen Zhang,Hongjun Zhao
Dietary intake is an important exposure pathway of environmental bisphenols including bisphenol S (BPS, a typical emerging organic pollutant). However, available data on the occurrence and risk assessment of BPS in food samples are limited due to the lack of high-throughput analytical methods. Herein, based on H 2 O 2 inducing fluorescence turn-off signals, a sensitive and high-throughput fluorescence enzyme-linked immunosorbent assay (FELISA) was developed for BPS investigation in beverages. In this system, the fluorescence of copper nanoclusters in ZIF-8 (CuNCs-CS@ZIF-8) could be quenched with the presence of H 2 O 2 owing to the strong oxidation, being served as signal amplification in FELISA. Meanwhile, the aggregation-induced emission (AIE) fluorescence enhancement of CuNCs-CS through the conformational locking of ZIF-8 provided an effective strategy to overcome the intrinsic limitations of FELISA including high background, serious fluorescence quenching in the detection of real samples. Thus, the integration of AIE building blocks into porous ZIF-8 showed obvious advantages in enhancing the analytical performance of FELISA. Under optimized conditions, satisfactory results with good accuracy were achieved in this proposed FELISA, which was applied for the systematic investigation of BPS in foods and further health risk assessments. The results after 100 beverages analysis displayed an average detection frequency of 55%, and the detected concentration of BPS ranged from below the limit of quantification (LOQ) to 12.08 ng/mL with a mean value of 1.717 ng/mL. Besides, the estimated daily intake (EDI) of BPS was calculated to be 0.05449–4.483 ng/kg-bw/day, in which milk–tea drinks contributed to the majority of BPS daily intake (mean EDI = 4.483 ng/kg-bw/day). And the hazard quotient (HQ) according to EDI values indicated that BPS exposure in beverages might not make a considerable impact on human health.
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高影响因子
FUEL
·
2023
·
IF 7.4
Junnan Tao,Mingyuan Wang,Xiangzhao Zhang,Lei Lu,Hua Tang,Qinqin Liu,Shuangying Lei,Guanjun Qiao,Guiwu Liu
Energy band matching coupled with intimate interface in a heterojunction is the prerequisite for achieving the separation of photogenerated carriers. Herein, 0D CdS nanospheres were uniformly anchored in 3D flower-like CoAl layered double hydroxide (CoAl-LDH) spheres via a hydrothermal process. The unique porous structure and abundant hydrophilic groups can significantly promote the interactions between catalyst and solutions and thus facilitate the photocatalytic reaction. The appropriately staggered band structures can trigger the formation of S-scheme heterojunction, and the tight connection between the CdS and CoAl-LDH offers more charge transport channels, thereby accelerating the charge transfer. The optimized CdS/CoAl-LDH nanohybrid presents a photocatalytic hydrogen evolution of 6.19 mmol/g/h and tetracycline hydrochloride (TC) degradation efficiency of 92.2 % in 50 min. Moreover, the Cd 2+ ion concentration measured by ICP-OES verifies the alleviation of photocorrosion, and the DFT calculations further demonstrate the higher hydrophilia, lower H 2 absorption energy and stronger charge interactions of CdS/LDH hybrid. This work provides a feasible strategy to efficiently utilize the photoinduced carries by constructing a highly hydrophilic S-scheme heterojunction.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 8
·3936-3944
·
IF 3.3
Binxiong Guang,Yiwei Zhang,Yahui Xiao,Miaojun Su,Yong Liu
To bridge transition metal complexes and heterogeneous catalysts for allylic oxidation of cyclohexene to 2-cyclohexene-1-one with O2 under mild conditions, Cu(II) coordinated N-bearing heteropolyacid-based poly(ionic liquid)s (Cu-PDVD-PW) were herein synthesized as novel heterogeneous catalysts. The physicochemical properties of the catalysts were investigated by BET, TG, XPS, FT-IR and SEM/EDS analysis. The results indicated that the as-prepared Cu-PDVD-PW catalyst inherited appreciable mesopores and excellent thermal stability from the N-bearing poly(ionic liquid)s, which could increase the mass transfer rate and provide more accessible active sites. Significantly, the Cu2+ cations were homogeneously and stably coordinated on the N-bearing poly(ionic liquid)s, which greatly improved the catalytic performance for cyclohexene oxidation toward 2-cyclohexene-1-one with O2 under mild conditions. Specifically, the 3% Cu-PDVD-PW catalyst exhibited 75.9% conversion of cyclohexene with a selectivity towards 2-cyclohexene-1-one of 45.5% and no activity loss within five cycles under the optimum reaction conditions.
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高影响因子
Small Structures
·
2023
·Vol. 4
·期 11
·2300177
·
IF 15.9
Yi-lei Li,Qing Zhao,Xu-jia Liu,Ying Liu,Ying-juan Hao,Xiao-jing Wang,Xin-ying Liu,Diane Hildebrandt,Feng-yu Li,Fa-tang Li
Precise regulation of photogenic electron transfer path plays an important role in improving photocatalytic carbon dioxide reduction efficiency and product selectivity. Herein, under the guidance of density functional theory calculation, the interface chemical bond (Co N 2 bond) at the atomic level is designed, and g-C 3 N 4 /CoCo-layered double hydroxide (LDH) heterostructure is manufactured. CoCo-LDH with water oxidation ability and g-C 3 N 4 were combined to construct S-scheme heterojunction with redox ability. The valence band and conduction band of g-C 3 N 4 and CoCo-LDH are precisely connected by the interfacial Co N 2 bond, which realizes the high-speed transfer of electron transport. Despite the absence of cocatalyst, the heterojunction exhibits high water oxidation and carbon reduction capacity due to the precise regulation of Co N 2 bonds. Theoretical calculations and experimental results show that the addition of CoCo-LDH: reduces the oxidation overpotential of water to provide more H protons; regulates the delocalization charge of g-C 3 N 4 ; and reduces the energy barrier of the CO 2 intermediate (*COOH) in the reduction half-reaction. The results show that the selectivity of carbon-based substances in the products was 100%, and the optimal CO yield was 71.39 μmol g −1 h −1 , which is among the highest values of g-C 3 N 4 -based photocatalysts.
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高影响因子
Food Frontiers
·
2023
·
IF 9.9
Pengde Lu,Jinfen Chen,Ying Chen,Xingping Quan,Jiayue Liu,Yan Han,Yiyang Li,Li Yang,Jian-Bo Wan,Yonghua Zhao
Ulcerative colitis (UC) is a digestive disease with a high incidence and is difficult to be cured due to its complex etiology. It has evidenced that intestinal barrier dysfunction plays a predominant role in UC. 20( S )-protopanaxadiol saponins (PDS) isolated from Panax notoginseng possess anti-inflammatory and antioxidative activities, suggesting its potential of treating UC. Herein, the therapeutic effects of PDS against UC and underlying mechanisms in the aspect of intestinal barrier dysfunction were investigated in vivo and in vitro. The results showed PDS had protective effects against dextran sulfate sodium–induced colitis, including attenuating weight loss, disease activity index score elevation, colon length shortening, and histological lesions. Additionally, PDS reduced the colonic activity of myeloperoxidase and the cytokine levels of TNF-α, IL-6, and IL-1β, decreased MDA production, and elevated colonic activities of SOD and GSH-Px in the colitis mice. The expressions of proteins related to tight junction (TJ), including ZO-1, claudin-5, occludin, caveolin-1 (Cav-1), and Nrf2 were downregulated, whereas that of Keap1 was upregulated after colitis induction. These changes were reversed by PDS. Cav-1 expression was downregulated in lipopolysaccharides (LPS)- and H 2 O 2 -induced HCT116 cells, and the expressions of ZO-1, claudin-5, and occludin were suppressed in HCT116 cells stimulated by LPS and H 2 O 2 combined with Cav-1 small interfering RNA transfection, which were ameliorated by PDS, suggesting PDS targeted Cav-1 against intestinal barrier damage. Collectively, PDS alleviates inflammatory injury and oxidative stress by regulating the Nrf2/Keap1 pathway, contributing to targeting Cav-1 against intestinal epithelial TJ proteins loss. It suggests PDS might be a promising therapeutic natural product for UC treatment.
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高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jiaojiao Jiao,Zexiang Wang,Jing Wang,Tiantian Yao,Zongliang Chen,Chen Chen,Li Sun,Xian Zhao,Weiliu Fan
The reasonable design of g-C 3 N 4 (CN)-based homojunctions is a promising method to improve the photocatalytic performance. Controlling the interfacial charge-transport process is challenging. Herein, Ag and P-doped CN (ACN and PCN) were selectively synthesized. The band edges of CN move downward continuously with increasing Ag or P doping concentration. CN/4ACN (type-II), CN/8PCN (S-scheme) and 4ACN/8PCN (S-scheme) were formed by suitable energy level matching, and their charge transfer mechanisms were confirmed via VB-XPS, UPS and ESR analysis. In the presence of the hole sacrificant triethanolamine (TEOA), both CN/4ACN and 4ACN/8PCN exhibited better H 2 evolution reaction (HER) rate than CN/8PCN due to the improvement in conductivity caused by Ag doping. However, only CN/8PCN and 4ACN/8PCN exhibited HER coupled with tetracycline (TC) degradation performance owing to the high redox potential of the S-scheme. Benefiting from a good carrier transport property and high redox potential, 4ACN/8PCN exhibited the best HER rate (2305.6 μmol·g −1 ·h −1 ) with TEOA as the hole sacrificant, which was 11.7 times than that of pure CN, respectively, and achieved a high HER rate (117.8 μmol·g −1 ·h −1 ) coupled with simultaneous TC degradation. This study provides a basic understanding of CN homojunctions, which shows potential for expanded applications in photocatalytic H 2 evolution and pollutant degradation.
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高影响因子
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