PLoS One
·
2016
·Vol. 11
·期 4
·e0151479
·
IF 3.057
Huiqing Wu,Qingping Wu,Guojie Wu,Qihui Gu,Linting Wei
The goal of this study was to identify Cd-resistant bacterial strains with endurance capacity and to evaluate their ability to remove cadmium ions from cadmium-polluted water. The Bacillus cereusS5 strain identified in this study had the closest genetic relationship with B . cereus sp. Cp1 and performed well in the removal of Cd 2+ ions from solution. The results showed that both the live and dead biomasses of the Cd 2+ -tolerant B . cereus S5 strain could absorb Cd 2+ ions in solution but that the live biomass of the B . cereus S5 strain outperformed the dead biomass at lower Cd 2+ concentrations. An analysis of the cadmium tolerance genes of B . cereus S5 identified ATPase genes that were associated with cadmium tolerance and involved in the ATP pumping mechanism. The FTIR spectra revealed the presence of amino, carboxyl and hydroxyl groups on the pristine biomass and indicated that the cadmium ion removal ability was related to the structure of the strain. The maximum absorption capacity of the B . cereus S5 strain in viable spore biomass was 70.16 mg/g (dry weight) based on a pseudo-second-order kinetic model fit to the experimental data. The Langmuir and Langmuir-Freundlich isotherm adsorption models fit the cadmium ion adsorption data well, and the kinetic curves indicated that the adsorption rate was second-order. For Cd 2+ concentrations (mg/L) of 1–109 mg/L, good removal efficiency (>80%) was achieved using approximately 3.48–10.3 g/L of active spore biomass of the B . cereus S5 strain. A cadmium-tolerant bacteria-activated carbon-immobilized column could be used for a longer duration and exhibited greater treatment efficacy than the control column in the treatment of cadmium-polluted water. In addition, a toxicity assessment using mice demonstrated that the biomass of the B . cereus S5 strain and its fermentation products were non-toxic. Thus, the isolated B . cereus S5 strain can be considered an alternative biological adsorbent for use in emergency responses to severe cadmium pollution and in the routine treatment of trace cadmium pollution.
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PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Shenghua Yang,Jinming Guo,Hongyu Yuan,Haixia Xiao,Xiaming Feng,Hongyu Yang,Cheng Yan,Wei Cai
Intumescent flame-retardant (IFR) systems are attractive alternatives to conventional halogenated flame retardants due to their halogen-free composition, efficiently reduced heat release, and low toxicity generation. Herein, a nitrogen–boron (N B) dual-element flame retardant, melamine borate (MB), was synthesized and subsequently incorporated into a UV-curable resin based on bis(2-methacryloxyethyl) phosphate to construct a ternary synergistic N/P/B IFR coating system. The structure, thermal stability, and flame-retardant properties of the resulting coatings were systematically investigated by various techniques and combustion tests. Increasing MB content raised the glass transition temperature (T g ), indicating enhanced network compactness and stability. The coating containing only 4 wt% MB achieved a UL-94 V -0 rating and exhibited a 56.35 % reduction in total smoke production (TSP), along with significantly improved thermal stability in terms of decomposition temperature and char residue. The synergistic contributions of phosphorus, nitrogen, and boron promote catalytic charring, gas release, and glass-phase reinforcement, leading to the formation of a dense, stable char barrier. This eco-friendly ternary IFR system overcomes the high loading requirements and toxicity concerns of conventional flame retardants, providing a promising strategy for the efficient and sustainable flame-retardant modification of polymeric coatings.
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Materials
·
2025
·Vol. 18
·期 23
·
IF 3.2
Wenjie Zhou,Tao Du,Changbai Long
High-efficiency, lead-free dielectrics are sought for pulsed-power capacitors, yet pristine Bi0.5Na0.5TiO3(BNT) suffers from large remanence, high coercivity, and limited breakdown strength. Here, we report (1 − x)Bi0.5Na0.5Ti0.97Nb0.03O3-xSr0.85Ba0.15Ta0.5+0.02xAl0.5−0.02xO3(BNTNb–SBTA, x = 0–0.15) ceramics synthesized via solid-state reaction, achieving enhanced relaxor ferroelectric behavior through multi-cation substitution at A- and B-sites. X-ray diffraction confirms a pure perovskite solid solution, while scanning electron microscopy reveals grain refinement, suppressing oxygen vacancies and boosting the breakdown strength. Raman and dielectric analyses evidence strengthened relaxor behavior, accompanied by loop slimming and a systematic rise in breakdown strength. The composition x = 0.10 achieves the best trade-off, deliveringWrec= 3.357 J cm−3andη= 90.5% atEb= 240 kV cm−1. Robust operational stability is demonstrated with small variations ofWrec/ηover 0.1–200 Hz, 25–175 °C, and 106cycles. Pulsed tests show fast discharge (∼26 ns) withWd= 0.826 J cm−3at ∼90% efficiency under moderate fields. These results indicate that synergistic A/B-site disorder (Sr/Ba on A-site; Ta/Al with Nb on B-site), combined with microstructural densification, effectively minimizesPrwhile elevatingEb, enabling high-efficiency energy storage under practical operating conditions.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Tao Jiang,Jin Zhang,Miaomiao Han,Yadong Liu,Shengxiang Ji
Directed self-assembly (DSA) of block copolymers (BCPs) has shown great potential for creating sub-10 nm patterns for advanced semiconductor manufacturing. It is necessary to develop block copolymers with high Flory–Huggins interaction parameters (χ) and similar surface energies (γ) between constituent blocks. Herein, this work presents the synthesis of lamellae-forming poly(4-chlorostyrene-b-methyl acrylate) (P4ClS-b-PMA) and investigates the DSA behavior of P4ClS-b-PMA. P4ClS-b-PMA has a higher χ than poly(styrene-b-methyl methacrylate) (PS-b-PMMA) and poly(styrene-b-methyl acrylate) (PS-b-PMA), resulting in the smallest achievable period (L0) to 14.1 nm. Notably, the P4ClS and PMA blocks possess similar γ values, which facilitates the formation of perpendicularly orientated domains in P4ClS-b-PMA films on neutral, substrate-modified silicon wafers under thermal annealing. 7× density multiplication DSA of P4ClS-b-PMA is successfully demonstrated in films on chemical patterns fabricated by 193 immersion (193i) lithography, with a feature size of about 7.5 nm. These findings confirm that P4ClS-b-PMA could be a potential candidate for DSA lithography.
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MOLECULES
·
2019
·Vol. 24
·期 15
·2835
·
IF 3.06
Wei Lin,Cangwei Zhuang,Xiuxiu Hu,Juanjuan Zhang,Juxian Wang
A concise and efficient approach to synthesizing coumarin-fused pyrazolo[3,4-b]pyridine via silica sulfuric acid (SSA) catalyzed three-component domino reaction under microwave irradiation has been demonstrated. Participation of various alcohols in construction of coumarin derivatives has been described for the first time. Short reaction time, high yields, one-pot procedure, usage of eco-friendly catalyst, and solvent are the key features of this method.Keywords:coumarin;pyrazolo[3,4-b]pyridine;synthesis;silica sulfuric acid
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Journal of Materials Chemistry C
·
2017
·Vol. 5
·期 47
·12422-12429
·
IF 5.256
T. T. Deng,E. H. Song,Y. Y. Zhou,L. Y. Wang,Q. Y. Zhang
Three isotypic double perovskites A2BAlF6:Mn4+ (A = Rb, Cs; B = K, Rb) were synthesized via a facile co-precipitation method at room temperature. XRD Rietveld refinements and Raman spectra indicate that the neighboring smaller A-site or larger B-site cation in A2BAlF6:Mn4+ lowers structural stability, but suppresses the [AlF6] octahedron to increase the crystal field strength and bond strength of the Al–F bond. Cs2KAlF6:Mn4+ presents a sharp line red light and excellent moisture resistance, but experiences severe thermal quenching. In comparison, altering the A- or B-site cation to Rb, Rb2KAlF6:Mn4+ and Cs2RbAlF6:Mn4+ shows blue shifts in emission and declining water resistance, but enhancements in thermal stability. A combination of static and dynamic emission degradations demonstrates that the water resistance of Mn4+ emission mainly relies on the structural stability of the host matrix; meanwhile, the thermal stability highly depends on the rigidity of its local accommodation. The variations of the temperature-dependent white light-emitting diode (WLED) performances further evidence their sufficient thermal stability for LED applications. These findings suggest that neighboring-cation modulation might be a feasible guideline for exploiting stable Mn4+-activated fluoride red phosphors in warm WLED applications.
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LANGMUIR
·
2024
·
IF 3.7
Yuanzhen He,Dengjie Zhong,Yunlan Xu,Ran Jiang,Jiayou Zhang,Pengfei Liao
A La-doped Ti/SnO2-Sb2O4 electrode with TiO2-NTs intermediate layer (Ti/TiO2-NTs/SnO2-Sb2O4-La) was created via the electrodeposition technique. The physicochemical and electrochemical properties of the electrode were analyzed through FESEM, XRD, XPS, CV, and LSV electrochemical tests. The results showed that TiO2-NTs were tightly packed on the surface of Ti substrate, thus improving the binding force of the SnO2-Sb2O4-La coating, offering greater specific surface area, more active spots, higher current response, and longer lifespan for the degradation of rhodamine B. The lifespan of the Ti/TiO2-NTs/SnO2-Sb2O4-La electrode reached 200 min (1000 mA cm–2, 1 M H2SO4), while the actual service life was up to 3699 h. Under the conditions of initial pH 3.0, Na2SO4 concentration of 0.1 M, current density of 30 mA cm–2, and initial rhodamine B concentration of 20 mg L–1, the color and TOC removal rate of rhodamine B reached 100% and 86.13% within 15 and 30 min, respectively. Rhodamine B was decomposed into acids, esters, and other molecular compounds under the action of •OH and SO4•– free radicals and electrocatalysis, and finally completely mineralized into CO2 and H2O. It is anticipated that this work will yield a novel research concept for producing DSA electrodes with superior catalytic efficacy and elevated stability.
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Journal of Energy Storage
·
2025
·
IF 9.8
Jinfeng Zheng,Hao Wu,Xiaoyang Cheng,Baopeng Ding,Jianwen Hu,Jingwei Li,Qingqing Hu,Haojie Gao,Zhipeng Zhao
N and B co-doped carbon materials were prepared using urea and H 3 BO 3 as activators and Pleurotus eryngii as the carbon source. Structural characterization shows that the heteroatom content of PENB (co-modified by urea and H 3 BO 3 ) is as high as 62 %, which is much higher than that of carbon materials modified by a single activator. The specific surface area of PENB is 2.2 times that of PEB (modified only by H 3 BO 3 ) and 127.4 times that of PEN (modified only by urea). The high specific surface area of PENB can provide more active sites. The excellent structure of PENB can be attributed to the fact that urea and H 3 BO 3 retain heteroatoms in the reaction system through neutralization reaction, which promotes the contact between heteroatoms and biomass, thereby enhancing the etching effect of heteroatoms on carbon materials. In addition, N and B atoms can induce amorphous carbon materials to produce graphene microcrystals, which can enhance the electronic conductivity of PENB. Interestingly, this method of increasing the content of heteroatoms and generating graphene is also applicable to other biomass. Electrochemical tests show that PENB exhibits the highest electrochemical performance. The symmetrical supercapacitor (SSC) assembled with PENB has an energy density of 8.8 Wh kg −1 at a power density of 400 W kg −1 . After 10,000 cycles, the capacitance retention rate is 100 %. This work provides a new universal strategy to improve the heteroatom content of carbon materials and the preparation of graphene, which can well cope with the energy crisis.
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WORLD JOURNAL OF GASTROENTEROLOGY
·
2025
·Vol. 31
·期 34
·109825
·
IF 5.4
Peng-Tuo Xiao,Chang-Feng Li,Yuan-Da Liu,Jing Zhong,Xi-Lun Cui,Chang Liu,Wei Yang
BACKGROUND Colorectal cancer (CRC) is a major global health burden. B cell CLL/lymphoma 10 (BCL10), a key component of the caspase recruitment domain protein-BCL10-mucosa-associated lymphoid tissue lymphoma paracaspase complexes, is upregulated in CRC and associated with poor patient prognosis, suggesting its potential role in CRC development and progression. Cuproptosis, a novel form of programmed cell death, has emerged as a promising therapeutic strategy for cancer. AIM To explore the role of BCL10 in regulating the sensitivity of CRC cells to cuproptosis. METHODS A series of in vitro and in vivo experiments were conducted using CRC cell lines and CRC mouse models to evaluate the effects of BCL10 on CRC cell proliferation, migration, invasion, and sensitivity to copper-induced cell death. Mechanistic studies were performed to elucidate the underlying molecular pathways. RESULTS BCL10 promoted CRC cell proliferation, migration, and invasion, while its knockdown had the opposite effects. BCL10 also influenced the sensitivity of CRC cells to cuproptosis, with BCL10 overexpression enhancing resistance and its knockdown increasing sensitivity. The mechanism involved BCL10 modulating the expression of DLAT, a key protein in the copper-induced cell death pathway, through activation of the nuclear factor kappa-B (NF-κB) signaling pathway. CONCLUSION BCL10 promotes CRC growth and regulates the sensitivity of CRC cells to cuproptosis by activating the NF-κB signaling pathway and modulating DLAT expression. These findings provide a molecular basis for developing BCL10-targeted therapies for CRC.
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Journal of Zhejiang University-SCIENCE A
·
2015
·Vol. 16
·期 8
·669-679
·
IF 0.882
Shan Jie,Wang Li,Yu Hao-jie,Tai Yu-lei,Akram Muhammad
Porous polymers are very suitable materials for the adsorption of organic pollutants due to their abundant pores and organic frameworks in aqueous solution. However, their recovery from treated pollutant is difficult, and thus, their application is limited. A facile strategy to synthesize reusable magnetic porous microspheres (MPMS) of Fe 3 O 4 /poly(methylmethacrylate (MMA)- co -divinylbenzene (DVB)) is described in this paper. The magnetic microspheres were synthesized by suspension copolymerization. MMA was used as a monomer, DVB was used as a crosslinker, and the magnetic fluid was added to the organic phase. The morphology of MPMS was observed by scanning electron microscope (SEM) and other properties were tested by superconducting quantum interference device, Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), and nitrogen sorption-desorption techniques. The synthesized MPMS possessed a high specific surface area using toluene as a porogen. It was further found that the ratio of DVB to MMA, the ratio of porogen to monomer, and the type of porogen all affected the specific surface area and the morphology of the microspheres. Furthermore, the microspheres were applied to remove Rhodamine B from its aqueous solution. The results showed that the microspheres possessed good adsorption capacity for Rhodamine B. This result was due to the porous structure, polar groups, and superparamagnetic characteristic of the synthesized microspheres.
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JOURNAL OF MATERIALS SCIENCE
·
2015
·Vol. 51
·期 6
·3257-3270
·
IF 2.371
Nian Pei,Su Meihui,Yu Ting,Wang Zheng,Zhang Binxing,Shao Xiuli,Jin Xiaoyong,Jiang Nanzhe,Li Shan,Ma Qiang
A novel highly compact and b -oriented MFI-type zeolite monolayer was obtained by assembling sec -butanol-modified rounded-coffin-shaped silicalite-1 microcrystals by Langmuir–Blodgett (LB) method. The LB monolayer was subsequently tested as a seed layer for the secondary growth of uniformly b -oriented and defect-free MFI zeolite films on stainless steel substrates and platinum electrodes. Three different methods were evaluated for identifying a suitable synthesis route to suppress the undesired a -oriented twin growth during the synthesis of MFI films. The crystal intergrowth and orientation of the MFI films were characterized by scanning electron microscopy and X-ray diffraction (XRD). The crystallographic preferred orientation indices and preferred orientation coverage values calculated using the XRD data were used to quantitatively determine the preferred orientation and surface coverage of the prepared zeolite films. The experimental results confirm that the low tetrapropylammonium hydroxide (TPAOH) method is the most effective route to suppress the undesired a -oriented twin growth, when the highly b -oriented LB monolayer was used as the seed layer for the secondary growth of the b -oriented MFI film. The highly b -oriented MFI-type zeolite film-modified electrodes were further tested as the working electrodes in electrochemical experiments. Cyclic voltammetry experimental results confirmed that the b -oriented MFI films fabricated at low TPAOH concentration were defect free and possessed a distinct molecular sieving property after calcination. The LB method, a highly reproducible and controllable method for the organization of zeolite crystals, can be further applied as an effective platform for the promotion and development of zeolite-modified electrodes as selective sensors. Graphical
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Yidi Liu,Qiunan Xie,Ming Huang,Xin Qu,Jingcheng Liu,Xiaojie Li,Wei Wei
Although epoxy resins (EP) have been widely used in many fields, performing halogen-free flame-retardant modification on them while improving their mechanical properties still holds significant research value. Herein, a halogen-free P/N/B-containing modifier (DVB) was synthesized via mild nucleophilic substitution, esterification, and Schiff base reactions using diphenylphosphinyl chloride, vanilline, phenylboronic acid, and 3-amino-1,2-propanediol as precursors. Its efficacy on bisphenol A epoxy resin/4,4′-diaminodiphenylmethane thermosets was systematically evaluated, with comparisons to a phosphorus-only intermediate (DV). At 3 wt% DVB loading (0.18 wt% P content), the modified EP exhibited a limiting oxygen index of 28.5% and achieved UL-94 V-0 classification. Relative to pristine EP, EP/5% DVB demonstrated a reduction of 41.8% in peak heat release rate, 27.7% in total heat release, and 30.0% in total smoke production, outperforming EP/5% DV (17.8%, 15.8%, and 12.2% reductions, respectively). Furthermore, EP/DVB thermosets displayed maximal improvements of 37.0% in flexural strength and 59.4% in impact strength, coupled with a glass transition temperature retention rate of 98%. Collectively, DVB presents considerable application potential for synergistically enhancing the flame retardancy and mechanical performance of epoxy resins.
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