FOOD CHEMISTRY
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2025
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IF 9.8
Jun Li,Yanli Li,Yuhan Shi,Zhangqi Li,Chunyu Deng,Guoqi Zhang,Qian Zhou,Zhouyu Wang,Xiaoqi Yu
Constantly escalating oxidative stress greatly increases the daily demand, and total antioxidant capacity (TAC) have become an important indicator. Therefore, the development of effective methods for TAC evaluation remains to be a research hotspot. Herein, a fluorescence/colorimetric sensor based on Fe-adsorbing carbon dots nanozymes (Fe-CDs) was constructed through a rational design. Fe-adsorbing step quenched the fluorescence of carbon dots and restored it by adding antioxidants to achieve fluorescence detection. Furthermore, it endowed Fe-CDs with peroxidase (POD) activity necessary for achieving colorimetric detection. A dual-mode fluorescence/colorimetric sensor array based on Fe-CDs was further constructed to selectively recognize 7 antioxidants and accurately evaluate TAC in 5 actual samples. In addition, Fe-CDs demonstrated excellent accuracy and anti-interference performance in detecting ascorbic acid TAC in fruit juice based on fluorescence/colorimetric methods, with detection limits of 2.1 and 0.4 μM as well as linear ranges of 4–40 and 6.3–150 μM, respectively. Moreover, Fe-CDs indeed guided changes in glutathione content through fluorescence imaging at the cellular level
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Materials Today Communications
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2025
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IF 4.5
Ming Liu,Hao Yang,Daixing Zhang,Yingjie Yu,Xiaoping Yang,Qing Cai
The occurrence of secondary caries associated with the polymerization shrinkage of dental resin composite repairing is mainly due to the resin lacking of bacteria-killing ability to counteract bacterial colonization at the tooth-resin interface. Photodynamic therapy against bacterial infections paves a new way for developing novel antibacterial dental resin composites. Herein, a yellowish graphitic carbon nitride (g-C 3 N 4 ) is synthesized via thermal polycondensation of melamine and functions as photoactive filler for resin composites in oral application. Upon exposed to visible light, the g-C 3 N 4 would generate reactive oxygen species (ROS) to kill bacteria, that Staphylococcus aureus ( S. aureus ) and Streptococcus mutans ( S. mutans ) almost completely die within 30 min. As the g-C 3 N 4 mixed into photocurable bisphenol A glycidyl methacrylate/triethylene glycol dimethacrylate (Bis-GMA/TEGDMA) at 5 wt%, the resulted composite remains high S. aureus and S. mutans killing rates (> 99 %), even supplemented with extra 65 wt% Schott® dental glass powders. The mechanical properties and biocompatibility of the resin composite are not influenced with the addition of g-C 3 N 4 . Overall, this resin composite with excellent photodynamic antibacterial capacity displays significant potential for dental restoration application.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Jin Xu,Zhaoyang Ding,Anqi Ji,Zuyao Fu,Jing Xie
Although various MOFzymes have been used for H2O2 detection, their application in leafy vegetables remains limited. This was primarily due to the interference of complex matrices in leafy vegetables, which affected the detection process. Additionally, the free catalytic metal in MOFzymes could lead to color fading, resulting in unstable and time-consuming reactions. In this study, inspired by the multiactive sites and high selectivity of iron porphyrin-based MOFzymes, along with enhanced stability by chelated iron, we developed a highly sensitive and selective MOFzymes PCN222(Fe)-Gly(Fe)2. This enzyme used zirconium as the metal center, iron porphyrin chelated iron as the organic ligand, and ferrous glycine as a modifier. While the advantages of MOFzymes were retained, the synergistic impact and internal Fenton-like reaction improved the reaction rate, leading to a remarkable 310.2% increase in catalytic velocity. In field testing environments, the H2O2 content in Pakchoi seedling leaves could be determined within 100 s. In addition, the sensor demonstrated practical utility in predicting the shelf life and freshness of Pakchoi seedlings.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Jin Qian,Sai Bai,Guoping Xiang,Dandan Zhang,Junmei Zhou,Minxian Cheng,Xiaohong Zhao,Xinying Chen,Yichu Zhang,Yueping Bao,Xiangning Xu
In this study, cobalt-encapsulated nitrogen-doped carbon hollow nanospheres (Co@NCs) were synthesized for peroxymonosulfate (PMS) activation and tetracycline (TC) degradation. Co@NCs synthesized at a high pyrolysis temperature exhibited relatively higher graphitic N and C═C contents, which effectively regulated the electron density of Co sites, enhancing the PMS activation efficiency. In the Co@NCs-900/PMS system, remarkable TC removal efficiency (97.14%, kobs = 0.179 min–1) and TOC removal (63.62%) were achieved within 60 min. Based on the quenching tests, EPR technology, and electrochemical measurements, a synergistic radical and nonradical pathway was unveiled, with SO4•–, 1O2, and ETP dominated. Co@NCs-900/PMS showed efficient catalytic performance and practical application potentials without interference from organic and inorganic compounds under the experimental background. Additionally, over 80% TC removal could be achieved after the seven-cycle catalytic reaction and showed negligible Co2+ leaching, indicating superior recyclability. Chemical analysis and DFT calculation revealed that PMS adsorption and activation could be strengthened by modulating the electron density with Co and N serving as the active sites. Overall, this study provides valuable insights into the incorporation of metal sites on N-doped carbonaceous catalysts for Fenton-like reactions in water purification applications.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Hua Yan,Chunfei Dai,Xingkun Luan,Hang Li,Chen Wang,Xiaona Li,Xuezhong Du
Multimodal tumor therapy based on “all-in-one” nanoplatforms enhances therapeutic efficacy, simplifies the construction process, and improves material utilization. Elemental selenium was successfully supported on upconversion nanoparticles (UCNPs) to constitute the near-infrared (NIR) light-responsive UCNP@Se heterostructures for the first time. Under 980 nm irradiation, the UCNP@Se heterostructures could not only produce holes and superoxide radicals •O2– but also catalyze the generation of hydroxyl radicals •OH by highly elevated levels of H2O2 in tumor cells to kill the tumor cells. In addition to the superior photocatalytic performance, elemental selenium itself also exhibited inherent inhibition activity against tumor cells. On the basis of the binding of anthracycline anticancer drugs such as doxorubicin (DOX) to the supported elemental selenium through Cu2+ bridging coordination, the UCNP@Se–Cu-DOX drug delivery system was constructed. The introduction of Cu2+ not only improved the efficient loading of DOX but also achieved the “AND” logic-controlled release of DOX under the combined stimuli of low pH and overexpressed glutathione (GSH) in tumor cells. Moreover, the loaded Cu2+ reacted with the overexpressed GSH to generate the active species CuII-GSSG upon NIR light irradiation, which further promoted tumor cell apoptosis. The NIR light-responsive UCNP@Se–Cu-DOX drug delivery system achieved the combination tumor therapy of selenium therapy, photocatalytic therapy, and logic-gated chemotherapy and has great potential applications in tumor therapy.
研究领域:
生物医学工程
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肿瘤学
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纳米医学
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ACTA PHYSICO-CHIMICA SINICA
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2025
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IF 13.5
Xue Wu,Yupeng Liu,Bingzhe Wang,Lingyun Li,Zhenjian Li,Qingcheng Wang,Quansheng Cheng,Guichuan Xing,Songnan Qu
Carbon dots (CDs) have emerged as promising photothermal agents for near-infrared (NIR)-mediated tumor therapy due to their excellent biocompatibility and tunable optical properties. However, it is still unclear how to precisely control their assembly behavior to enhance NIR absorption and photothermal conversion efficiency. In this work, we present a hyper-assembled electron donor/acceptor CDs complex (S-d/a-CDs), constructed by integrating electron-donating CDs (d-CDs) with electron-withdrawing CDs (a-CDs). This configuration significantly enhances the NIR absorption capacity of S-d/a-CDs. Under 740 nm laser irradiation, S-d/a-CDs achieve a remarkable photothermal conversion efficiency (PTCE) of 65.8%. S-d/a-CDs exhibit negligible cytotoxicity and effective tumor accumulation capacity through intravenous administration, enabling complete tumor elimination after NIR laser irradiation. To our knowledge, this study is the first to exploit synergistic assembles of two types of CDs for photo-physical property engineering, establishing a groundbreaking paradigm for the development of advanced NIR-triggered photothermal materials.
研究领域:
生物医学工程
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纳米医学
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肿瘤学
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APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Qingqing Zhu,Xiaojuan Zhang,Li Li,Chao Cheng,Jun Zheng,Youmin Guo,Chunchang Wang
This study focuses on enhancing the piezoelectric photocatalytic activity of BiFeO 3 through rare earth ion doping. By doping rare earth ions (La, Sm, Ce), the crystal structure, optical properties, and piezoelectric properties of BiFeO 3 are modified. The results show that the doping alters the rhombic structure, reduces the band gap, and enhances light absorption. A synergistic system combining ultraviolet − visible spectral irradiation and a high − frequency ultrasonic field was used. By monitoring the decomposition kinetics of Rhodamine B (RhB) and the generation pathways of free radicals, the multi-field coupling catalytic efficiency of piezoelectric semiconductor materials was systematically quantified. The doping significantly improves the degradation rate, with Bi 0.8 Sm 0.2 FeO 3 showing the best performance. The roles of different radicals in the degradation process are investigated, and the catalyst shows good stability and sustainability after multiple cycles.
研究领域:
材料科学
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环境科学
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CHEMICAL ENGINEERING RESEARCH & DESIGN
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2025
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IF 3.9
Da Wang,Miao Zhang,Qingjie Xie,Song Han,Sisi Xiao,Huijuan Wang
In this study the indigenous materials in plateau areas were used to cope with the challenge of increasing antibiotics pollution in Qinghai-Xizang Plateau. The barely straw was chosen as the raw material to prepare the manganese modified biochar (XBSMBC) and then combined with peroxymonosulfate (PMS) to set up the PMS/XBSMBC system to treat the enrofloxacin (ENR) in water. The study showed that there was a higher PMS activation and thus ENR degradation of the manganese modified biochar prepared from the barley straw than those from Xizang wheat straw and Henan wheat straw. The preparation parameters of the XBSMBC, including the mass ratio of barley straw to manganese and the pyrolysis temperature, for the PMS activation as well as the ENR degradation were reviewed and found that the 1:1 and 900°C were the optimal preparing conditions (XBSMBC-900 (1:1)). The influence of the XBSMBC-900 (1:1) additive amount, PMS dosage and solution initial pH on the ENR degradation was also ascertained. Results of quenching experimental studies and electron paramagnetic resonance demonstrated that ENR degradation in the PMS/XBSMBC system was achieved by a combined effect of SO 4 ·- , ·OH, ·O 2 - and 1 O 2 . Four possible pathways of ENR degradation were provided, and the toxicity analysis predictions were applied to infer the validity of the PMS/XBSMBC process for the ENR solution treatment.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xinyu Wang,Tianren Li,Chunrui Zhao,Zian Fang,Mingyu Li
The selective conversion of peroxymonosulfate (PMS) to singlet oxygen ( 1 O 2 ) critically depends on precise electronic structure engineering of the catalysts. The PMS electron-donating pathway enables 1 O 2 generation, but the high energy barriers associated with the initial intermediate *SO 5 •− formation result in an unsatisfactory 1 O 2 yield. Herein, Co-doped ZnO was designed by calcination of zeolitic imidazolate framework. Co doping significantly improved the visible-light response, enhanced the photogenerated carrier separation and migration of ZnO, and increased the ZnO valence band potential. These effects promoted the electron-donating reaction of PMS to produce 1 O 2 . The optimized Co-ZnO-3/vis/PMS system exhibited a 27.2-fold higher methylene blue degradation rate constant (k = 0.9871 min⁻¹) with 43.7 % total organic carbon removal within 5 min. In addition, the developed 1 O 2 -dominated oxidation system removed 83.1 % of chromaticity, 59.9 % of total phenol, and 24.8 % of chemical oxidation demand from the coking wastewater tailwater. This work provides a pathway for tailoring 1 O 2 -dominated reactive species for contaminant removal, providing a theoretical guideline for the deep treatment of coking wastewater tailwater.
研究领域:
环境科学
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材料科学
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化学工程
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Materials Horizons
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2025
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IF 10.7
Yuling yang,Yingxin Zhang,Ping Zhu,Gang Wang,Lijing Zhu,Zhixiang Zeng,Zhanghui Wang
The hydrophilic and underwater superoleophobic membranes can handle membrane pollution from low-viscous oils in oily wastewater, but application in high-viscous oils and other foulants is limited. In this study, the filtration membrane with outstanding anti-fouling performances in complicated wastewater purification is designed and developed, which not only prevents oils from the membrane bulk because of the underwater superoleophobicity but also activates peroxymonosulfate advanced oxidation processes (PMS-AOPs) generating reactive species for the degradation of various pollutants on the membrane. Briefly, amorphous Fe-based metal-organic frameworks (aMOF) were covered on the polyvinylidene difluoride/polyacrylic acid (PVDF/PAA) blend membrane and further modified by amorphous Co(OH)2 nanosheets, therefore amorphous Fe/Co synergistic catalysts-modified membrane (M-aMOF-Co) was engineered for the first time. Compared with the membrane modified by crystalline MOF (M-cMOF) and the membrane decorated by amorphous Co(OH)2 nanosheets (M-Co), M-aMOF-Co exhibits more stability and higher PMS-AOP performances against the dyes and antibiotics (such as methylene blue, rhodamine B, tetracycline, levofloxacin, and enrofloxacin), due to the fast redox reaction between Co2+ and Fe3+ on the amorphous catalysts. For the separation of a soybean oil-in-water emulsion containing rhodamine B and tetracycline, M-aMOF-Co has a high flux recovery rate (FRRP) of 98.1% and low pollution resistance (Rfp) of 0.1 × 1011 m-1, which are superior to M-cMOF (86.8% and 0.6 × 1011 m-1) and pure PVDF/PAA membrane without modification (called M, 35.8% and 3.0 × 1011 m-1). This study not only pioneers a novel application of amorphous Fe/Co catalysts in PMS-AOPs but also offers an innovative solution for membrane fouling in wastewater reclamation.
研究领域:
环境科学
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材料科学
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化学工程
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WATER RESEARCH
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2025
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IF 12.4
Haojun Ma,Weijian Duan,Li Tian,Wuwei Wang,Chunhua Feng
The use of electrochemical advanced oxidation process (EAOP) for treating NH 4 + -rich wastewater via reactive halogen species offers a promising alternative to biological methods but faces challenges in strong acid due to poor NH 4 + oxidation kinetics. Herein, we identify the strong solvation of NH 4 + as the key limiting factor, where surrounding H 2 O molecules form a protective shield that hinders oxidative species. To address this, low-frequency sonication (LFS, e.g., 40 kHz) was introduced, disrupting the solvation environment through cavitation and enhancing NH 4 + exposure to oxidative species. At pH 2, electrolysis alone exhibited only 8.0–28.8 % NH 4 + oxidation efficiency within 2.5 h, while this value significantly improved (60.73–100 %) in the LFS-Cl/EAOP systems and reached 100 % in the LFS-Br/EAOP systems. The LFS-Cl/EAOP systems showed strong dependence on anode materials, with boron-doped diamond (BDD) and PbO 2 outperforming mixed metal oxides (MMO) and Pt; in contrast, the LFS-Br/EAOP systems achieved high NH 4 + removal regardless of anode type. It is further revealed that bromate formation was suppressed by rapid HBrO consumption and cathodic reduction. Moreover, the feasibility of complete NH 4 + elimination and acid solution regeneration for NH 3 adsorption via LFS-Br/EAOP was demonstrated, highlighting its potential for practical application.
研究领域:
环境科学
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电化学工程
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Xinyan Huang,Fengyu Qu,Yajie Ma,Huiming Lin
The tumor microenvironment (TME) inherently exhibits treatment resistance, which restrains the therapeutic effect. Here, intracellular piezoelectric catalysis and stepwise nitric oxide (NO) release were integrated to modulate the TME for anticancer therapy. A piezoelectric homologous boron nitride (BN) heterostructure (BN3:1) was prepared, which promotes the piezoelectric character and facilitates the spatial separation of ultrasound (US)-generated charges. The electrons dominate reactive oxygen species (ROS) generation, and the holes also consume endogenous glucose and nicotinamide adenine dinucleotide phosphate (NADPH). The simultaneous reactions of electrons and holes not only facilitate charge separation but also disrupt TME metabolism. In addition, BN3:1 releases NO in response to TME-specific H+/H2O2. Under US irradiation, increased ROS generation boosts NO release to damage DNA/mitochondria and decompose the extracellular matrix (ECM). Without US, moderate NO release is conducive to vascular normalization, hypoxia relief, and PD-L1 downregulation. Furthermore, intracellular NO microbubbles amplify US imaging contrast, endowing efficient monitoring of NO release in vitro and in vivo. It is the first time employing BN nanosheets as sonosensitizers and NO donors. The synergistic effect grants great anticancer efficiency, which can also arouse an anticancer immune response to further fight against metastasis and recurrence.
研究领域:
生物医学工程
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肿瘤学
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材料科学
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