Journal of Materials Chemistry C
·
2025
·
IF 5.1
Runji Yang,Weiqing Guo,Qingxi Jin,Yaohua Xu,Feng Wei,Jiliang Zhang
Sensitive, selective and low-cost sensors for nitric oxide (NO) detection are significant due to its toxicity. This report investigates the tunable sensing behavior in chemiresistive NO sensors using α-Fe2O3 nanoparticles as sensing materials. The sensor exhibits a distinctive sensing characteristic with a reversible transition from p- to n-type sensing behavior, which is regulated by working temperature. The temperature-modulated (200–400 °C) and concentration-dependent (100–1000 ppm) p–n transition diagrams are constructed, while the gas sensing behaviors can be well described using a two-isotherm model based on Langmuir adsorption theory. Detailed reactions between NO and α-Fe2O3 at each temperature are proposed, and the corresponding activation energy is calculated. It is demonstrated that the p–n transition mechanism during NO detection is modulated by the dynamic variations in the α-Fe2O3–NO interaction. The p–n transition observed as a specific behavior in NO gas sensing can provide a novel approach to enhance the recognition capability for NO gas.
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CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Shenglong Li,Ruoqing Zhang,Jipeng Fan,Kun Xiang,Jing Zou
Phosphogypsum, a voluminous by-product of wet-process phosphoric acid production, presents substantial environmental burdens due to its extensive accumulation. Transforming this waste material into high-value α-hemihydrate gypsum (α-HH) offers a promising avenue for resource recovery and environmental sustainability. This study delves into the innovative process and underlying mechanism for synthesizing high-strength α-HH from phosphogypsum utilizing mellitic acid as a crystal modifier. By employing single-factor and orthogonal experiments within a pressurized hydrothermal method, an optimal procedure was identified. The resultant product demonstrated impressive mechanical properties, achieving 2 h flexural and dry compressive strength of 9.84 MPa and 67.65 MPa, respectively, thereby exceeding the α60 level specified in JC/T 2038–2010. X-ray photoelectron spectroscopy (XPS) analysis confirmed the adsorption of mellitic acid onto the α-HH surface. Density functional theory (DFT) calculations further elucidated that the adsorption energies of mellitic acid on the (001) and (100) crystal planes were −10.45 eV and −1.80 eV, respectively, indicating stronger interaction with the (001) plane. This strong adsorption plays a crucial role in regulating the crystal morphology towards more desirable short columnar structures, thus enhancing the mechanical strength of the produced α-HH. These findings offer valuable theoretical and practical insights for advancing gypsum-based material engineering and expanding the high-value utilization of industrial by-products.
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RENEWABLE ENERGY
·
2026
·
IF 9.1
Jiajin Jiang,Kang Chen,Wenrui Yao,Tianhao Liu,Lideng Yang,Shengyuan Qiu,Qingli Sun,Ce Sun,Haiyan Tan,Yanhua Zhang
In this study, we integrated photocatalysis with biomass thermal liquefaction technology to address the problems of limited yield and unstable quality of biocrude in conventional processes. Specifically, this photo-thermal synergistic system enables the efficient conversion of α-cellulose by fabricating a suspension through the homogeneous dispersion of cellulose and bismuth oxychloride photocatalyst in methanol solvent, followed by conducting the thermal liquefaction reaction under continuous light irradiation. Experiments were performed by selecting different process variables, including the reaction temperature (240-280°C), holding time (10-50min), and the α-cellulose/methanol ratio (CMR, 5-15wt%). Single-factor experimental results demonstrated that photocatalysis, functioning as an external energy input, was observed to facilitate reaction progression under relatively mild conditions. Furthermore, according to biocrude yield prediction model constructed based on the Box-Behnken design (BBD) response surface methodology, a maximum biocrude yield of 54.44wt% was achieved at the optimized conditions of 270°C, 15 min, and CMR of 5wt%. Compared with the yield of 27.52wt% obtained under dark condition without catalyst, this yield increased by 97.8%. In addition, conventional hydrothermal liquefaction (HTL) typically requires temperatures of 300-350°C to achieve optimal biocrude yield and quality, while photo-thermal synergistic system enables high-yield biocrude production at significantly reduced temperatures of 260-280°C. Product analysis revealed that the biocrude sample obtained under the photothermal synergistic system exhibited a relatively higher proportion of light fractions (e.g., C7 glycosidic compounds). This compositional shift contributes to improved fuel properties of the biocrude, rendering it better suited for energy-oriented applications.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Min Wang,Tianyi Li,Yuncheng Huang,Xin Liu,Yixuan Liang,Wen Zhang,Guoqing Yang,Fan Su,Wei Zhang,Chuan Ding,Qilin Gu,Chao Huangfu,Hailin Shen,Zhenghui Pan
Aqueous zinc-ion batteries (ZIBs) are attracting widespread attention for large-scale energy storage due to their high safety, environmental friendliness, high theoretical capacity and favorable cost-effectiveness. Substantial research has focused on addressing side reactions such as corrosion, hydrogen evolution, and dendrite formation at the zinc anode interface. However, the absence of high-performance cathode materials hinders the commercialization of this battery system. Manganese dioxide as a promising cathode candidate for ZIBs suffers from severe capacity decay during cycling, which remains a critical challenge. Herein, an effective strategy for enhancing cyclic stability and specific capacity of α-MnO 2 nanowires via Ti 4+ -induced dual-functionality is provided. As expected, the Ti-doped sample exhibits superior cyclic stability and rate capability compared to the pristine material, delivering an initial specific capacity of 175 mAh·g -1 and maintaining 116 mAh·g -1 after 200 cycles. Notably, the Ti-doped electrode retains excellent long-term stability and comparable specific capacity upon reverting to the initial low current density after stepwise cycling at progressively increased rates, demonstrating enhanced structural and electrochemical reversibility. Comprehensive experimental and theoretical analyses reveal that the incorporation of Ti 4+ offers dual-functionality by reducing energy barriers for electron transitions and ion migration, while optimizing the electrode surface to suppress insulating by-products accumulation, thereby boosting overall electrochemical performance.
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Materials Today Communications
·
2026
·
IF 4.9
Zhangwei Guo,Zhuolu Li,Yi Wu,Song Wang,Jiaxin Rui,Zhaogang Teng,Lihong Qi,Kai Pan
One-dimensional (1D) CsPbI 3 nanomaterials with long carrier lifetimes, high carrier transport efficiencies, and anisotropic optical properties show promising applications in lasers and photodetectors. In this study, monodisperse Cs 4 PbI 6 nanocrystals (NCs) (12.3 nm) were first synthesized by thermal injection. The addition of deionized water to this solution then induced the conversion of Cs 4 PbI 6 NCs into CsPbI 3 NCs, followed by their self-assembly into CsPbI 3 nanorods (NRs) with controllable aspect ratios. This process leverages the high solubility of CsI in water, which drives the decomposition of Cs 4 PbI 6 and the formation of CsPbI 3 NCs, which subsequently self-assembled and fused into CsPbI 3 NRs. CsPbI 3 NRs synthesized under the optimal reaction conditions were characterized by uniform size and regular morphology, with a diameter of 12.4 nm and length of 52.5 nm. XRD analysis shows that these monodisperse CsPbI 3 NRs, in contrast to 1D CsPbI 3 nanomaterials synthesized by the conventional thermal injection method, possess a typical cubic phase (α-phase) structure and exhibit good red light emission properties. Due to kinetic limitations during rapid nucleation at the nanoscale, the system preferentially forms the metastable α-CsPbI 3 , characterized by a low nucleation barrier and strong structural inheritance, rather than the thermodynamically stable δ-phase. Compared with NRs obtained under other reaction conditions, the optimal CsPbI 3 NRs demonstrate stronger fluorescence intensity and longer fluorescence lifetime. The CsPbI 3 NRs synthesized under the optimal conditions (2 mL water, 5 min) exhibit a strong first exciton absorption peak at 450 nm, a narrow photoluminescence emission peak at 695 nm, a lifetime as high as 239.9 ns, and a higher exciton binding energy (72.5 meV), ensuring efficient exciton emission at room temperature. Compared with NRs obtained under other reaction conditions, these optimally synthesized NRs demonstrate stronger fluorescence intensity and longer fluorescence lifetime. This work presents a reliable method for the controlled synthesis of 1D α-CsPbI 3 NRs, offering a theoretical and experimental foundation for the application of halide perovskite nanorods in high-performance optoelectronic devices.
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Journal of Energy Storage
·
2026
·
IF 10.7
Zhao Wang,Wenrong Hu
Aqueous Zn//MnO 2 batteries have attracted much attention for their promising application in large-scale energy storage and flexible electronics. However, it is an obstacle to develop high-performance MnO 2 that can be massively synthesized via a facile method. Herein, a mechanical grinding method is employed to prepare α -MnO 2 /reduced graphene oxide ( α -MnO 2 /rGO) composite material in which α -MnO 2 nanofibers are uniformly loaded onto the surface of rGO sheets. It is found that the α -MnO 2 /rGO composite cathode exhibits much superior rate performance and cycling stability over α -MnO 2 , which is attributed to the significantly increased electrical conductivity and enlarged specific surface area. In addition, a flexible quasi-solid-state Zn// α -MnO 2 /rGO battery with excellent cycling performance was fabricated, and can survive multiple damages. This work provides a guidance to the massive production of high-performance cathode materials for aqueous zinc-ion batteries.
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Mycology-An International Journal On Fungal Biology
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2025
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IF 4.4
Yue Zhang,Yunxiao Luo,Xiaoyu Liu,Jun Li,Yuxian Xia,Yueqing Cao
In pathogenic fungi, N-glycosylated cell wall proteins serve as initial contact points during interactions with host. In the process of protein N-glycosylation, N-linked glycans are processed by α-glucosidases I (Gls1) and II (Gls2) to trim the final two glucose residues to facilitate glycoprotein maturation. In this study, we identified and characterized MaGls2 by disrupting its catalytic subunit MaGls2α, in the entomopathogenic fungus Metarhizium acridum. MaGls2α was found to localize to the endoplasmic reticulum. Deletion of MaGls2α resulted in earlier conidiation and increased conidial yield, but impaired colony growth and diminished tolerance to various stresses. ∆MaGls2α mutant exhibited disrupted cell wall architecture, characterized by a smoother surface, increased wall thickness, reduced β-1,3-glucan, and elevated chitin content. Bioassays demonstrated that the ∆MaGls2α mutant exhibited significantly attenuated virulence and triggered a stronger immune response from the host. Further analysis of the infection process revealed that reduced cell wall hydrophobicity and impaired appressorium formation in ∆MaGls2α mutant led to its decreased ability to penetrate the insect cuticle. Furthermore, the mutant showed slowed growth in host hemolymph, hindering successful colonization. These results indicate that MaGls2α is essential for maintaining proper cell wall composition and structure, thereby influencing fungal growth, conidiation, stress tolerance, and pathogenicity.
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Food Bioscience
·
2026
·
IF 6.2
Ying Bao,Kasper Hettinga,Yaowei Liu,Peng Zhou
α-lactalbumin, rich in essential amino acids, is widely used in infant formula and special medical foods containing polyunsaturated fatty acids, which may induce interactions between proteins and lipids/lipid derivatives during processing and storage. This study investigates the effects of malondialdehyde (MDA) oxidation, a typical product of lipid peroxidation, on the structure, functionality, and digestibility of α-lactalbumin. Spectroscopic techniques showed that MDA incubation altered the secondary and tertiary structure of α-lactalbumin and increased its surface hydrophobicity. After MDA modification, the rehydrated particle size of α-lactalbumin increased from ∼2.00 nm to ∼13.00 nm, and SDS-PAGE results confirmed the presence of protein crosslinking and aggregation. Additionally, MDA modification reduced the solubility and interfacial properties of α-lactalbumin. In vitro gastrointestinal digestion results showed that MDA modification delayed protein hydrolysis, which finally increased the abundance of high-molecular-weight peptides, and decreased the release of free amino acids. This is probably due to MDA-induced protein aggregation, which shields the hydrolysis sites of digestive enzymes, enhancing resistance to proteolysis. The findings of this study provide a theoretical basis for elucidating lipid–protein interactions and their consequences in complex food systems, offering valuable insights for the formulation design and monitoring of nutritional component changes during processing and storage.
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PLoS Pathogens
·
2026
·Vol. 22
·期 2
·e1013954
·
IF 4.9
Gan Luo,Mingzhu Zhao,Qingxia Wang,Yang Zhou,Dan Yao,Jue Zhang,Gang Wang,Junjie Zhang,Chongbing Liao,Wuyuan Lu
Harnessing antimicrobial peptides as bactericidal agents affords an attractive approach to developing new anti-infective therapies. We found that abolishing disulfide bonding in mouse cryptdin 1 (Crp1), a weakly bactericidal α-defensin of 35 residues, turned it into a potent antimicrobial peptide against Gram-negative bacteria. Here we report that Crp1 in its natively folded β-sheet structure forms high-ordered nanonets to cloak, but not kill, Escherichia coli , whereas its disulfide-devoid linear counterpart (L-Crp1) readily disintegrates the bacterial membrane as monomers. L-Crp1 adopts a helix-loop-helix conformation in molecular dynamics simulations, likely conducive to productive peptide-membrane interactions detrimental to bacteria. A truncated peptide spanning the helix-loop-helix, L-Crp1 1-25 , maintains the same conformation as and similar membranolytic and bactericidal activities to L-Crp1. Remarkably, intraperitoneally administered L-Crp1 1-25 rescues E. coli -challenged mice from lethality in a sepsis model by effectively reducing bacterial burden, inflammation and tissue damage. Our studies cultivate additional mechanistic insights into the mode of action of defensins and shed new light on how to harness these host factors for potential therapeutic use.
A recent epidemiological study estimates that antibiotic-resistant bacterial infections directly and indirectly killed 4.71 million patients worldwide in 2021 and will cause 8.22 million annual deaths by 2050. Searching new classes of antibiotics refractory to the existing resistance mechanisms for antibacterial therapy is imperative for global public health and economic growth. Toward this end, cationic antimicrobial peptides are particularly attractive drug candidates as they primarily target the anionic microbial membrane by a mechanism that deters the rise of resistance. However, obstacles abound in their clinical translation, including, but not limited to, subpar bactericidal activity and safety concerns. In studying a weakly bactericidal mouse α-defensin, cryptdin 1 (Crp1), we made a surprising finding that breaking its three structurally stabilizing disulfide bonds through Cys-to-Ala mutations unleashed an antimicrobial peptide against Gram-negative bacteria with an altered conformation but significantly improved potency and selectivity. A further shortened peptide of 25 amino acid residues, L-Crp1 1-25 , was safe and highly efficacious in rescuing E. coli -infected mice from lethality by reducing bacterial burden, inflammation and tissue damage. Our study demonstrates how to harness naturally occurring antimicrobial peptides as novel anti-infective agents to combat increasingly prevalent antibiotic resistance.
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Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 8
·2897-2910
·
IF 6.4
Mei Wu,Hongchang Wang,Xiaohui Liang,Dunhui Wang
In this work, we designed the flower-like structure of 1T/2H-MoS2@α-Fe2O3 nanocomposites with high-efficiency microwave absorption, in which the α-Fe2O3 microdrums are attached to the surface of 1T/2H-MoS2 constituting a special flower-like morphology. During the synthesis process, the content of α-Fe2O3 microdrums plays a significant, constructive role in the dielectric properties and impedance matching characteristics of the 1T/2H-MoS2@α-Fe2O3 nanocomposites. The optimal reflection loss (RL) value of the flower-like nanocomposites can reach −61.18 dB at low frequency (6.52 GHz), while the RL value is also −56.98 dB at 4.43 GHz with a lower frequency. Furthermore, the frequency bandwidth below −10 dB was up to 4.68 GHz with an effective absorption frequency range of 13.32–18 GHz when the thickness was 1.82 mm. The results show that excellent electromagnetic wave absorption capabilities of the 1T/2H-MoS2@α-Fe2O3 nanocomposites in the low frequency range mainly benefit from the perfect coordination of multiphase MoS2 and α-Fe2O3 microdrums, which makes them achieve perfect impedance matching in the low frequency range. This provides a simple demonstration for the development of highly efficient electromagnetic wave absorption materials in the low frequency range.
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RSC Advances
·
2023
·Vol. 13
·期 3
·1594-1605
·
IF 3.9
Baikang Zhu,Qinbing Dong,Jianghua Huang,Debin Song,Lihui Chen,Qingguo Chen,Chunyang Zhai,Bohong Wang,Jiří Jaromír Klemeš,Hengcong Tao
To improve the efficiency of photocatalytic oxidative degradation of antibiotic pollutants, it is essential to develop an efficient and stable photocatalyst. In this study, a polymer-assisted facile synthesis strategy is proposed for the polymorph-controlled α-Bi2O3/Bi2O2CO3 heterojunction retained at elevated calcination temperatures. The p–n heterojunction can effectively separate and migrate electron–hole pairs, which improves visible-light-driven photocatalytic degradation from tetracycline (TC). The BO-400@PAN-140 photocatalyst achieves the highest pollutant removal efficiency of 98.21% for photocatalytic tetracycline degradation in 1 h (λ > 420 nm), and the degradation efficiency was maintained above 95% after 5 cycles. The morphology, crystal structure, and chemical state of the composites were analysed by scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Ultraviolet-visible diffuse reflection, transient photocurrent response, and electrochemical impedance spectroscopy were adopted to identify the charge transfer and separation efficiency of photogenerated electron–hole pairs. The EPR results verified h+ and ˙OH radicals as the primary active species in the photocatalytic oxidation reactions. This observation was also consistent with the results of radical trapping experiments. In addition, the key intermediate products of the photocatalytic degradation of TC over BO-400@PAN-140 were identified via high-performance liquid chromatography-mass spectrometry, which is compatible with two possible photocatalytic reaction pathways. This work provides instructive guidelines for designing heterojunction photocatalysts via a polymer-assisted semiconductor crystallographic transition pathway for TC degradation into cleaner production.
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JOURNAL OF ORGANIC CHEMISTRY
·
2022
·
IF 4.198
Hong-Li Huang,Juan Xu,Ya-Xin Fan,Qing-Qiang Su,Ji-Yuan Du,Ru-Fen Zhang,Yan-lan Wang,Honggang Hu,Fei Gao
The visible-light-promoted difunctionalization of alkenyl ketones has been developed for easy access of various tetralones, cyclopropane, or alkenyl migration compounds. With fac-[Ir(ppy)3] as the photocatalyst, alkenyl ketones captured the α-carbonyl alkyl radical and evolved through intramolecular cyclization and the elimination of a proton to give the difunctionalized products. This strategy is characterized by good yields, mild reaction conditions, and outstanding functional group tolerance.
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