ACTA MATERIALIA
·
2025
·
IF 9.3
Xiang Wei,Minhui Yuan,Meng Jiang,Huang Gong,Jing Shuai,Jiayi Ye,Lianjun Wang,Qihao Zhang,Wan Jiang
Zintl-phase thermoelectrics with CaAl 2 Si 2 -type structures exhibit desirable “phonon-glass electron-crystal” behavior. However, the development of environmentally friendly p-type counterparts remains challenging. While n-type Mg 3 Sb 2 -based compounds have achieved high figures of merit ( zT > 2.0), their integration with non-Zintl systems is hindered by thermal and chemical mismatches. Moreover, many existing p-type Zintl compounds rely on toxic (Cd, Pb) or scarce (Yb, Ge) elements, restricting their scalability and sustainability. Here, we report a scalable, rare-earth- and toxicity-free p-type Zintl compound, Ca 0.5 Mg 1.297 Ag 0.003 Zn 1.2 Sb 2 , developed via targeted Mg-site substitution. First-principles calculations reveal that Ca substitution at Mg1 sites induces beneficial electronic structure modifications, including bandgap widening, valence band sharpening, and an indirect-to-direct bandgap transition, collectively enhancing carrier mobility (50 cm 2 ·V -1 ·s -1 ) and strengthening carrier-phonon scattering at elevated temperature. Simultaneously, trace Ag doping at Mg2 sites precisely tunes the carrier concentration by nearly one order of magnitude, achieving improved electrical conductivity while maintaining ultralow thermal conductivity. As a result, the optimized compound achieves a peak zT of 0.81 at 773 K and an average zT of 0.50 over 300–773 K. These results demonstrate a chemically stable, sustainable, and high-performing Zintl platform, offering a promising strategy for advancing eco-friendly thermoelectric technologies.
研究领域:
材料科学
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热电学
·
固体物理
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能量转换
·
电子结构
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Chemistry
·
2022
·
IF 5.545
Su Ruobing,Tang Hongliang,Xi Fengna
Convenient, rapid and sensitive detection of p-nitrophenol (p-NP), one of the priority environmental pollutants, in environmental samples is of great significance. Electrochemical sensor with simple fabrication process, high sensitivity and selectivity, good antifouling, and regeneration performance is highly desirable. Herein, an electrochemical sensing platform is demonstrated based on the integration of vertically-ordered mesoporous silica-nanochannel film (VMSF) on electrochemical pre-activated glassy carbon electrode (p-GCE), which is able to realize ultrasensitive detection of p-NP in environmental samples. Electrochemical pre-activation of GCE is achieved through a simple and green electrochemical polarization process including anodic oxidation at high voltage and the following cathodic reduction at low voltage. The p-GCE possesses enhanced active area and introduced active sites, and enables stable binding of VMSF. VMSF is easily grown on p-GCE through the electrochemically assisted self-assembly (EASA) method within 10 s. Owing to the hydrogen bonding between silanol groups and p-NP, VMSF nanochannels display strong enrichment effect for the detection of p-NP. The developed VMSF/p-GCE sensor can achieve sensitive detection of p-NP ranging from 10 nM to 1 μM and from 1 to 30 μM with a limit of detection (LOD) of 9.4 nM. Considering the antifouling ability of VMSF, detection of p-NP in pond water is achieved.
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2020
·
IF 6.155
Jiajia Ye,Xuting Li,Guang Xia,Guanghao Gong,Zhiqiang Zheng,Chuanzhong Chen,Cheng Hu
We report for the first time a Na-ion battery anode material composed of P-doped CoSe 2 nanoparticles (P-CoSe 2 ) with the size of 5–20 nm that are uniformly embed in a 3D porous honeycomb-like carbon network. High rate capability and cycling stability are achieved simultaneously. The honeycomb-like carbon network is rationally designed to support high electrical conductivity, rapid Na-ion diffusion as well as the accommodation of the volume expansion from the active P-CoSe 2 nanoparticles. In particular, heteroatom P-doping within CoSe 2 introduces stronger P-Co bonds and additional P-Se bonds that significantly improve the structure stability of P-CoSe 2 for highly stable sodiation/desodiation over long-term cycling. P-doping also improves the electrical conductivity of the CoSe 2 nanoparticles, leading to highly elevated electrochemical kinetics to deliver high specific capacities at high current densities. Benefiting from the unique nanostructure and atomic-level P-doping, the P-CoSe 2 (2:1)/C anode delivers an excellent cycle stability with a specific capacity of 206.9 mA h g −1 achieved at 2000 mA g −1 after 1000 cycles. In addition, this material can be synthesized using a facile pyrolysis and selenization/phosphorization approach. This study provides new opportunities of heteroatom doping as an effective method to improve the cycling stability of Na-ion anode materials.
研究领域:
材料科学
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电化学
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纳米能源材料
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储能技术
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无机功能材料
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2025
·
IF 2.6
Bi Mengqi,Liu Wei,Yang Menghui,Huang Naibao
To enhance the corrosion resistance of 316L stainless steel, which is a potential alternative bipolar plate material for PEMWE or PEMFC, Ni–P amorphous coating was prepared by DC electrodeposition method. The results indicated that the coating’s structure strongly related to the phosphorus (P) content. Under specific phosphorus content conditions, a dense coating (Ni–P-30) with typical amorphous characteristics can be obtained, with a uniform surface morphology and no obvious structural defects. In simulated PEMWE environment, Ni–P-30’s corrosion current density decreased by one order of magnitude and the corrosion potential shifted positively by 0.29 V comparing with untreated steel. The excellent corrosion resistance of the amorphous Ni–P coating is attributed by its continuous and dense microstructure, functioning as an effective physical barrier. Meanwhile, during corrosion process, the P will enrich on the surface from the preferential dissolution of nickel in amorphous Ni–P coatings, improving the corrosion potential, reducing the corrosion current and inhibiting the hydration of Ni. Preliminary studies have shown that Ni–P-coated 316L stainless steel can be used as a replacement for graphite as a bipolar plate for PEMWE and PEMFC.
研究领域:
材料科学
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电化学
·
表面工程
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能源材料
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腐蚀科学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yafeng Jin,Ruilong Zhang,Xinyue Song,Didi Tong,Haibo Shang,Fangming Han,Xiaobo Li,Guangri Xu
Elevated levels of methylglyoxal (MG) in the human body are linked to various metabolic disorders. Therefore, developing efficient methods for detecting MG in food and biological fluid is of significant importance. In this work, a high-catalytic-activity conductive copper-based metal–organic framework (Cu 3 (HHTP) 2 ) was synthesized via a hydrothermal method, and a sensitive electrochemical sensor based on a glassy carbon electrode (GCE), denoted as Super-P/Cu 3 (HHTP) 2 /GCE, for monitoring methylglyoxal (MG) was constructed using a composite of Cu 3 (HHTP) 2 and carbon black Super-P. Leveraging the catalytic activity of Cu 3 (HHTP) 2 and the enhanced conductivity provided by Super-P, the sensor demonstrated a wide linear detection range (1–500 µM) and a low detection limit (0.0275 µM). Moreover, it was successfully applied to the determination of MG in milk, beer, urine, and human serum samples, achieving recoveries ranging from 91.7 % to 115.7 %. This work opens up new avenues for the development of innovative electroanalytical tools for MG monitoring in both food and biological fluid.
研究领域:
分析化学
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生物医学工程
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食品科学
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Jinhuan Liang,Xiaoqi Wu,Jingwen Ma,Jin Huang,Jiaxin Wu,Rongrong Zhong,Zehua Zou,Yanjun Hou,Qingxiang Wang,Xuan Zheng
Constructing efficient and durable bifunctional electrocatalysts for overall water splitting (OWS) under industrial current densities remains a critical challenge. Herein, we report a crystalline–amorphous (C–A) Schottky junction catalyst, NiFe(OH)x/Fe7S8/IF, featuring a nanosphere-assembled hierarchical architecture synthesized via a two-step in situ growth strategy. The hybrid integration of conductive Fe7S8 nanorods and amorphous NiFe(OH)x nanosheets generates a robust C–A heterointerface. Mechanistic investigations reveal that the built-in electric field (BIEF) at the Schottky interface not only narrows the band gap of NiFe (oxy)hydroxide to improve charge transport, but also modulates the adsorption behavior of reaction intermediates by tuning the d/p-band center proximity (Δεd–p) of surface reaction sites. First-principles calculations demonstrate that Δεd–p serves as a reliable electronic descriptor for optimizing HER and OER pathways of NiFe (oxy)hydroxide-Fe7S8 heterointerface via balancing H adsorption and weakening OOH binding, respectively. Benefiting from these unique electronic regulations, the resulting catalyst exhibits exceptional bifunctional electrocatalytic performance, requiring overpotentials of only 359 mV for the hydrogen evolution reaction (HER) at 1 A cm–2 and 380 mV for the oxygen evolution reaction (OER) at 500 mA cm–2. When integrated into a two-electrode electrolyzer, the NiFe(OH)x/Fe7S8/IF couple achieves a low cell voltage of 1.42 V at 10 mA cm–2 and sustains 1 A cm–2 over 300 h with minimal current density decay. This work sheds light on a generalizable interfacial design strategy and introduces Δεd–p as a conceptual framework for the rational design of cost-effective, high-performance water-splitting electrocatalysts.
研究领域:
电催化
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材料科学
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能量转换
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纳米材料
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可再生能源
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界面工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2025
·
IF 3.1
Ying He,Lidan Ding,Jiabin Zhou,Dan Liu,Ying Zhang
In this study, Fe 2 O 3 /Bi 2 O 3 p-n heterojunction photocatalysts were fabricated to remove tetracycline (TC). The Fe 2 O 3 /Bi 2 O 3 /Vis/PMS system achieved the complete degradation of TC within 80 min, with a reaction rate constant of 0.0553 min −1 , which was 34.5 and 5.8 times higher than individual photocatalytic process and PMS-AOPs, respectively. This superior catalytic performance of Fe 2 O 3 /Bi 2 O 3 is primarily attributed to two key aspects. Firstly, forming a heterojunction promotes efficient segregation of photogenerated electron–hole pairs, wherein holes (h + ) directly activate PMS. Secondly, PMS simultaneously functioned as an electron acceptor to generate SO₄• − , accelerating the Fe 3+ /Fe 2+ redox cycle while inhibiting electron-hole recombination. This study confirmed the dual advantages of enhanced radical generation through PMS-assisted photocatalysis synergistic effects and improved charge separation via heterojunction engineering.
研究领域:
环境科学
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材料化学
·
催化
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·11574
·
IF 15.7
Zhang Xiaojian,Hao Lu,Xie Juxuan,Tan Zhaohong,Li Shuaiqi,Gan Chongwu,Xiong Wei,Duan Xianghao,Li Shuai,Xu Zishuo,Zhang Kai,Wang Yazhong,Tang Haoran,Huang Fei
Electrochromic devices enable dynamic modulation of light and heat, yet their broader adoption is hindered by limited color tunability, slow switching kinetics, and low coloration efficiency. Here, we present a complementary organic electrochromic device that addresses these challenges by employing dual conductive polymers: poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) and poly(benzodifurandione). The resulting device delivers exceptional performance, featuring a high optical contrast of 51% at 570 nm, ultrafast switching speeds (0.17/0.36 s for coloration/bleaching), a record-high coloration efficiency (1688 cm 2 C⁻ 1 at 550 nm), and excellent cycling stability over 10,000 cycles. By integrating the device with a semitransparent organic solar cell, we realize a fully self-powered smart window with reducing indoor temperatures by 7 °C. Furthermore, coupling the electrochromic filter with a 4 × 4 organic photodetector array featuring on-chip Fabry–Pérot cavities enables a miniaturized spectrometer with 7.2 nm spectral resolution. This multifunctional electrochromic platform seamlessly bridges smart-window technology and spectral sensing, paving the way for energy-efficient, and compact optoelectronic systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysts
·
2021
·Vol. 11
·期 12
·1550
·
IF 4.146
Hongzhou Dong,Yingjie Chen,Chong Gong,Lina Sui,Qiong Sun,Kangle Lv,Lifeng Dong
Due to slow kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) during discharging and charging processes, it is essential to rationally design and synthesize non-precious metal bifunctional electrocatalysts with good performance for metal-air batteries. Herein, Ag-MnFe2O4heterojunction nanoparticles supported on N, S, P-codoped graphene (NSPG) are developed with enhanced ORR and OER bifunctional electrocatalytic activities and stability. In contrast, S, P-doped graphene (SPG) and N, P-doped graphene (NPG) show less stabilization for the heterojunction particles. For example, under alkaline conditions, the ORR half-wave potential of Ag-MnFe2O4/NSPG can reach 0.831 V, and the over potential for OER is 0.56 V at the current density 10 mA·cm−2. Furthermore, Ag-MnFe2O4/NSPG shows better methanol resistance and durability than Pt/C catalysts.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 13
·4555-4566
·
IF 4.39
Ishaq Muhammad,Maher Jabeen,Peiran Wang,Yu-Shi He,Xiao-Zhen Liao,Zi-Feng Ma
The advancement of novel synthetic approaches for micro/nanostructural manipulation of transition metal phosphide (TMP) materials with precisely controlled engineering is crucial to realize their practical use in batteries. Here, we develop a novel spray-drying strategy to construct three-dimensional (3D) N,P co-doped graphene (G-NP) microspheres embedded with core–shell CoP@C and MoP@C nanoparticles (CoP@C⊂G-NP, MoP@⊂G-NP). This intentional design shows a close correlation between the microstructural G-NP and chemistry of the core–shell CoP@C/MoP@C nanoparticle system that contributes towards their anode performance in lithium-ion batteries (LIBs). The obtained structure features a conformal porous G-NP framework prepared via the co-doping of heteroatoms (N,P) that features a 3D conductive highway that allows rapid ion and electron passage and maintains the overall structural integrity of the material. The interior carbon shell can efficiently restrain volume evolution and prevent CoP/MoP nanoparticle aggregation, providing excellent mechanical stability. As a result, the CoP@C⊂G-NP and MoP@⊂G-NP composites deliver high specific capacities of 823.6 and 602.9 mA h g−1 at a current density of 0.1 A g−1 and exhibit excellent cycling stabilities of 438 and 301 mA h g−1 after 500 and 800 cycles at 1 A g−1. The present work details a novel approach to fabricate core–shell TMPs@C⊂G-NP-based electrode materials for use in next-generation LIBs and can be expanded to other potential energy storage applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
Frontiers in Microbiology
·
2025
·
IF 4.5
Yuanyang Yi,Yuxian Wang,Wanqin Liu,Jing Zhu,Meiying Gu,Qiong Jia,Xue Li,Munire Mutalifu,Ling Jiang,Wei Zhang,Zhidong Zhang
Introduction: Di-n-butyl phthalate (DBP) is one of the most widely used phthalate esters (PAEs) and is considered an emerging global pollutant. It may pose a significant threat to ecosystem and human health due to its residual hazards and accumulation in the environment. Bacteria-driven PAE biodegradation is considered an economical and effective strategy for remediating such polluted environments.Methods: A DBP-degrading bacterium (P-7), was isolated from long-term film mulched cotton field soil. Its identity was confirmed via physiological, biochemical, and 16S rRNA gene analyses. The degradation conditions were optimized through single-factor experiments and response surface methodology (RSM).Furthermore, the whole-genome sequencing coupled with metabolomics was employed to elucidate metabolic mechanisms.Results: Priestia megaterium P-7 (P. megaterium P-7) achieved 100% DBP removal within 20 h under optimal conditions and exhibited broad substrate specificity for other PAEs. Genomic analysis identified key genes (lip, aes, ybfF, estA, and yvaK) encoding esterases/hydrolases that initiate DBP catabolism, converting it to phthalic acid (PA). Subsequent decarboxylation (pdc, bsdCD, mdcACDH, and lysA) and dioxygenase-mediated steps integrated PA into the TCA cycle. Metabolomics revealed three degradation pathways: decarboxylation (DBP → MBP → BB → BA→Catechol), hydrolysis (DBP → MBP → PA → PCA → Catechol) and direct β-oxidation (DBP → DEP → MEP → PA → Catechol).Conclusion: P. megaterium P-7 demonstrates exceptional degradation efficiency, substrate versatility, and environmental stress tolerance, making it a promising candidate for bioremediation of organic pollutants in contaminated soil.
研究领域:
微生物学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Cellular and Infection Microbiology
·
2025
·
IF 4.8
Jiansheng Lin,Chunyan Lin,Jingyang Zheng
Background: P. diazotrophicus was isolated from a newborn with D-galactosemia complicated sepsis. A homologous blaCAR-2 gene, encoding CAR-2, a predicted member of the CAR family subclass B3 metallo-β-lactamases (MBLs), was found in the genome of this strain. This study aimed to explore the identification of a novel CAR-2 protein encoded by the chromosome of P. diazotrophicus Pd1 that exhibits the zinc-binding motifs of subclass B3 enzymes and the regulatory pattern of CARR, located directly upstream of the blaCAR-2 gene, on the blaCAR-2 gene and its impact on antibiotic resistance.Methods: Antibiotic susceptibility testing was conducted by the plate agar dilution method. Site-directed mutagenesis was conducted using Mut Express II Fast Mutagenesis Kit V2. Kinetic assays were used to determine the hydrolysis of β-Lactam. The construction of bacterial knockout strains was carried out according to the principle of homologous recombination. The detection of the mRNA expression level of the gene was performed by Real-time Quantitative PCR (qPCR).Results: The minimum inhibitory concentrations (MICs) for E.coli DH5α(pHSG398::CAR-2), which expressed blaCAR-2, increased significantly for cefalothin, cefuroxime and cefotaxime sodium by 2-, 16- and 32- fold, respectively, which showed that blaCAR-2 had resistance to these three antibiotics. This protein, which was a MBL, contains two classical zinc-binding sites characteristic of subclass B3, with the amino acid motif His136, His138, His211, Asp140, His141, and His276. Among the six residues, His136, Asp140, and His211 exhibited the highest catalytic activity. We determined that CAR-2 can effectively hydrolyze cefalothin, cefuroxime and cefotaxime. The chloramphenicol resistance of the constructed E. coli DH5α strain was significantly reduced in the presence of CARR than in the absence of CARR. Compared with those for the wild-type P. diazotrophicus, MICs of cefalothin, cefuroxime and cefotaxime for the ΔCARR strain increased by 8-, 8- and 16-fold, respectively, and the expression level of blaCAR-2 also increased by approximately 10-fold.Conclusion: Overall, CAR-2 is a novel subclass B3 MBL of the CAR family that exhibits catalytic activity against cefalothin, cefuroxime and cefotaxime. CARR represses the expression of blaCAR-2, thereby reducing the resistance of P. diazotrophicus to these antibiotics. This provided a theoretical basis for revealing new mechanisms of pathogen resistance.
研究领域:
微生物学
·
分子生物学
·
感染性疾病
·
抗生素耐药机制
·
基因调控
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）