NEW CARBON MATERIALS
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2025
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IF 6.8
Yan-bing YUAN,Zong-bin ZHAO,Hong-hui BI,Run-meng ZHANG,Xu-zhen WANG,Jie-shan QIU
For rechargeable aqueous zinc-ion batteries (ZIBs), the design of nanocomposites comprised of electrochemically active materials and carbon materials with novel structures has great promise in addressing the issue of electrical conductivity and structural stability in the electrode materials during electrochemical cycling. We report the production of a novel flexible electrode material, by anchoring MnO 2 nanosheets on a B,N co-doped carbon nanotube array (BNCNTs) grown on carbon cloth (BNCNTs@MnO 2 ), which was fabricated by in-situ pyrolysis and hydrothermal growth. The generated BNCNTs were strongly bonded to the surface of the carbon fibers in the carbon cloth which provides both excellent electron transport and ion diffusion, and improves the stability and durability of the cathode. Importantly, the BNCNTs offer more active sites for the hydrothermal growth of MnO 2 , ensuring a uniform distribution. Electrochemical tests show that BNCNTs@MnO 2 delivers a high specific capacity of 310.7 mAh g −1 at 0.1 A g −1 , along with excellent rate capability and outstanding cycling stability, with a 79.7% capacity retention after 8000 cycles at 3 A g −1 . Download: Download high-res image (181KB) Download: Download full-size image
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2024
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IF 4.3
Xiping Mei,Qian Du,Junfen Li,Chuan Dong
Although a few of fluorescent probes based on carbon dots (CDs) for vitamin B (VB) determination have been emerged, none of them can realize the detection of different kinds of VB. In this paper, nitrogen, chlorine co-doped dual-emission CDs (N, Cl-CDs) with emissions at 404 nm and 595 nm have been easily synthesized. VB 2 , VB 9 and VB 12 can all induce obvious fluorescence turn-off response toward the N, Cl-CDs. Based on that, three types of VBs are quantitatively and sensitively evaluated in aqueous solution with wide concentration ranges of 14.9–135.0 μM, 34.7–89.8 μM and 29.8–79.8 μM, respectively. Importantly, visual semiquantitative detection of VBs on a test strip are also proposed. Moreover, the current N, Cl-CDs have been successfully applied to the detection of VBs in real samples. The N, Cl-CDs are sensitively multifunctional sensors for three kinds of VBs in aqueous solution and the visual semiquantitative detection by test paper assay is simple, portable and inexpensive.
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PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 25
·45070-45079
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IF 5.6
Hengji He,Dainan Zhang,Youbin Zheng,Cheng Liu,Jie Li,Qinghui Yang,Huaiwu Zhang
Herein, the influences of Mo 6+ substitution at the B-site on the sintering character, microstructures, and dielectric properties of scheelite-type CaW 1- x Mo x O 4 ( x = 0–0.12) ceramics were studied in detail. The formation of scheelite solid solutions effectively reduced the sintering temperature of conventional CaWO4 ceramics from 1150 °C to 950 °C . Appropriate Mo substitution improved the compactness of the samples (relative density is 98.78 %), promoted grain growth, and consequently influenced their dielectric properties. At x = 0.08, the modified ceramics exhibited significantly improved dielectric properties compared to conventional CaWO 4 ceramics, with ε r ∼9.92 ± 0.05, Q × f ∼64848.33 ± 1459 GHz (@12.8 GHz), and τ f ∼ −20.97 ± 1.91 ppm/°C. Furthermore, comprehensive analyses employing Piller-Van Loan (P-V-L) chemical bond theory, lattice vibration characterization analysis, and ionic polarizability evaluation demonstrated that the chemical stability of W-O bonds is the important factor governing the variations in dielectric properties of CaW 1-x Mo x O 4 ceramics. This study presents a promising candidate material for microwave device applications.
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BIOFACTORS
·
2019
·Vol. 45
·期 6
·950-958
·
IF 3.598
Haihua Zhang,Qiumei Shi,Weixiao Nan,Yaqi Wang,Shiyong Wang,Fuhe Yang,Guangyu Li
The regeneration of proliferation potential of dermal papilla (DP) cells contributes to the treatment of hair loss disorders. Ginkgolide B (GKB) and bilobalide (BB) are two functional components isolated from Ginkgo biloba that can promote hair growth. In the current study, the effect of GKB or BB on DP cell viability and the related signaling was assessed. Hair follicles were isolated from minks, and the growth of hair follicles was measured under the administration of GKB or BB. DP cells isolated from minks were also subjected to GKB or BB. The administration of GKB or BB induced the growth of hair follicles. The viability of DP cells was also increased by GKB or BB as illustrated by methyl thiazolyl tetrazolium and flow cytometry detection. Moreover, the secretion of VEGF was enhanced by GKB or BB. At molecular level, the activities of Akt, ERK1/2, and β-catenin were induced by GKB, whereas BB only increased the activities of Akt and β-catenin. In conclusion, although the two components influenced the β-catenin signaling activity in distinct mechanisms, they both increased the viability of DP cells and promoted the cycle of hair follicles.
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PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Miao Wang,Feixiang Ding,Yuren Zhao,Ge Xu
Conventional graphitic carbon nitride (g-C3N4) suffers from rapid complexation of photogenerated charge carriers and limited visible-light absorption. To address these issues, this study aims to construct an intramolecular donor–acceptor system within g-C3N4 to precisely modulate its electronic structure and enhance photocatalytic performance. A novel carbon nitride-based composite photocatalyst (CN-abIM9mg) was synthesized via a two-step thermal condensation method using 2-aminobenzimidazole (abIM) as a dopant. The ultratrace doped donor provides an electron transfer mode requiring lower energy, which narrows the band gap of g-C3N4 from 2.79 eV to 2.70 eV and expands the absorption capability to visible light. Furthermore, CN-abIM9mg has a specific surface area of 112.215 m2 g−1, which is 3.5 times higher than that of g-C3N4 (32.156 m2 g−1), supplying more photocatalytic active sites. A possible mechanism was proposed based on characterization using X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, and density functional theory simulation calculations. In addition to the π–π* transition originating from the pristine g-C3N4, the occurrence of n–π* electronic transition within the donor–acceptor system enhanced the delocalization ability of the photogenerated charge carriers. The synergistic effects of improved light absorption, efficient charge separation, and increased surface area endow CN-abIM9mg with high photocatalytic activity, leading to a 98.8% degradation rate for Rhodamine B under visible light, with a reaction rate constant 4.9 times that of pure g-C3N4. This work provides profound molecular-level insights into enhancing photocatalytic activity through n–π* transition promotion in donor–acceptor-structured polymers.
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Journal of Chemistry
·
2015
·Vol. 2015
·期 1
·131050
·
IF 0.772
Lu Zeng,Ligang Yang
Calcium silicate hydrate based on steel slag (SCSH) and Ni-doped SCSH (NSCSH) were synthesized under specific hydrothermal conditions at saturated vapor pressure and 185°C for 7 hours. The structure and morphology of SCSH and NSCSH were characterized by XRD, SEM, and N 2 adsorption/desorption. SCSH mainly consisted of amorphous calcium silicate hydrate gel (C-S-H gel) together with some flake-like tobermorite and NSCSH consisted of crystalline tobermorite and xonotlite. The addition of Ni(NO 3 ) 2 had great influence on microstructure of the composites, and SCSH possesses a mesoporous structure with slit-shaped pores, but NSCSH has narrow distributions of pore size. Furthermore, NSCSH has a higher adsorption capacity for Rhodamine B (RhB) than SCSH with removal percentages of RhB of about 52.4% and 88.2%, respectively. In addition, the effects of NSCSH dosage and pH values on the adsorption of RhB were investigated. Adsorption isotherm parameters are obtained from both Langmuir and Freundlich analysis and showed a better fit to a Langmuir model. All results indicated that NSCSH has a great potential to be a safe, easily-made, and cost-effective material for the control of RhB contamination.
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ACTA MATERIALIA
·
2026
·
IF 9.3
Sai Liu,Xiaopeng Hu,Guangsheng Chen,Shenxiang Luo,Yu Zou,Jinwei Guo,Wang Zhu
Despite their promise as candidates for thermal barrier coatings (TBCs), the engineering application of A 6 B 2 O 17 ( A = Hf, Zr; B = Ta, Nb) ceramics is currently limited by a lack of comprehensive understanding regarding their CMAS corrosion behavior and underlying mechanisms. This paper addresses this gap by elucidating the governing effects of compositional modulation and corrosion conditions on the CMAS corrosion performance of these ceramics, integrating experimental and first-principles theoretical approaches. The results demonstrate that while all compositions exhibit similar corrosion products and resistance mechanisms, A 6 Ta 2 O 17 (particularly Hf 6 Ta 2 O 17 ) displays superior corrosion resistance. This enhanced performance is attributed to a combination of factors, including its exceptional thermodynamic stability, reduced Ca 2+ diffusivity, the significant barrier effect of its dense corrosion product layer, and stronger interfacial bonding strength. Corrosion-induced spallation in Zr 6 B 2 O 17 primarily stems from two factors: the phase transformation of ZrO 2 and an inherently weak interfacial bonding strength. Moreover, while an elevated Ca/Si ratio increases the aggressiveness of CMAS melts, the formation of a dense corrosion product layer on the ceramic surface effectively mitigates this detrimental effect.
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高影响因子
Chem
·
2025
·Vol. 12
·期 3
·
IF 19.6
Yu-He Liang,Jia-Xin Kang,Yan Wang,Yi-Ge Li,Hou-Ji Cao,Qianyi Zhao,Xuenian Chen,Yan-Na Ma
The selective B–H functionalization of carboranes has received considerable attention because of their wide applications in functional materials, catalysis, and pharmaceuticals. Deuterium-labeling experiments and kinetic-isotope-effect experiments are two important tools for mechanistic studies on the selective B–H activation of carboranes. Thus, developing an effective method for the synthesis of perdeuterated carboranes is highly desirable. Herein, we present a practical method for synthesizing perdeuterated carboranes via Pd(II)-catalyzed B–H activation by using D 2 O as a deuterium source. This protocol features extraordinary functional-group tolerance, high levels of deuterium incorporation, and ease of scaling. Mechanistic studies illustrate that the deuteration reaction proceeds via Pd(II)-catalytic electrophilic H/D exchange and subsequent intermolecular Pd migration. The same degree of deuterium incorporation across all boron vertices indicates that the Pd-migration step is faster than the electrophilic palladation step. Additionally, the versatility of this method is reflected in the deuteration of other boron clusters.
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PROGRESS IN SOLID STATE CHEMISTRY
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2026
·
IF 9.7
Chao Wei,Jingyu Ran,Jie Zhang
The wideband near-infrared (NIR) phosphors for next-generation intelligent NIR light sources are becoming a research hotspot in the field of luminescent materials due to their potential applications in optical sensing, biological imaging, and smart lighting. This study reports a Cr 3+ -activated A 3 B(PO 4 ) 3 -type (Sr 3 Lu(PO 4 ) 3 ), abbreviated as SLP) near-infrared phosphor. Under 466 nm blue light excitation, SLP:Cr 3+ phosphor exhibits a broad near-infrared emission from 700 to 1200 nm with a peak wavelength at 860 nm, a full width at half maximum (FWHM) of 141 nm, and an initial quantum yield of 31.48%. Structural and spectroscopic characterization confirms that Cr 3+ preferentially occupies the octahedral coordination sites of Lu 3+ in the matrix, forming a weak crystal field environment that favors the spin-allowed 4 T 2 → 4 A 2 transition of Cr 3+ , leading to broad near-infrared emission. Additionally, by substituting Y 3+ for the B-site (Lu 3+ site), the luminescent intensity of the material is significantly enhanced, and the quantum yield is increased to 81.53%. Furthermore, the introduction of Yb 3+ constructs a Cr 3+ →Yb 3+ energy transfer system, further optimizing the luminescent performance. Although the phosphor exhibits severe thermal quenching, the packaged near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) maintain a low surface temperature of 59.5 °C at 500 mA, ensuring reliable operation. The phosphor also exhibits excellent temperature sensitivity (max relative sensitivity: 3.33%·K −1 ) for fluorescence thermometry. Practical applications including invisible QR code encryption, night vision, biological imaging, and long-distance illumination are demonstrated, showcasing the versatility of the developed NIR pc-LED. This work provides a high-performance NIR phosphor candidate for multi-functional smart light sources.
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高影响因子
Journal of Pharmaceutical Analysis
·
2026
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IF 11.2
Luyun Yang,Yingchao Li,Chunyan Yin,Litao Wu,Kexin Cheng,Jiafu Liang,Xiaona Cheng,Quan Zhang,Yakun Huang,Haoyun Bai,Wenlong Wang,Kaikai Lu,Rong Zhao,Zizhen Guo,Mingzhen Zhang,Shengli Han,Dongmin Li
Inflammatory bowel disease (IBD) is a chronic intestinal inflammatory condition resulting from complex interactions. With current clinical treatments showing limited efficacy, IBD poses an increasing global health challenge. Analysis of the GEO database, clinical samples from IBD patients, and a dextran sulfate sodium (DSS)-induced murine colitis model consistently reveal elevated Toll-like receptor 2 (TLR2) expression at both transcriptional and protein levels, implicating it in IBD pathogenesis and highlighting its potential as a therapeutic target. Previous studies have shown that Schisandrin B (SchB) protects DSS-induced colitis, but whether it directly targets an upstream immune receptor such as TLR2, and what additional mechanisms beyond its known anti-inflammatory actions exist, remain to be explored. In this study, SchB is identified as a moderate TLR2 ligand using cell membrane chromatography (CMC). By directly binding to TLR2 and inhibiting its heterodimerization with Toll-like receptor 1 (TLR1) or Toll-like receptor 6 (TLR6), SchB exerts significant anti-inflammatory and therapeutic effects in inflammatory cell models and ameliorates both DSS-induced ulcerative colitis and peptidoglycan (PGN)-induced immune colitis in mice. SchB inhibits TLR2 signaling and activates the sequestosome 1 (p62/SQSTM1)/Kelch-like ECH-associated protein 1 (Keap1)/nuclear factor erythroid 2-related factor 2 (Nrf2) axis, concurrently exerting anti-inflammatory, antioxidant, and anti-apoptotic effects and reinforcing intestinal barrier integrity. These findings provide new evidence of molecular mechanisms supporting SchB as a promising therapeutic candidate for IBD.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Chunlin Chen,Zhikui Huang,Guoqing Xiao,Beibei Ren,Guirong Zhao,Shuang Qing,Ting Ma,Chunyan Chen,Chuanlin Mou
PDA@Fe was loaded onto BN surface, imparting abundant functional groups and enhancing carbonization performance. • High-phosphorus-content PA was grafted onto the BN/PDA@Fe surface to promote the cross-linking of the polymer into a char. • Co-Ni/B were uniformly loaded onto the BN/PDA@Fe surface to construct a hierarchical BN/PFPA@Co-Ni/B flame retardant. • The nano-reinforcing agent combines high P-N-B content with Fe, Co, Ni to achieve synergistic flame retardancy. Boron nitride (BN) is regarded as an effective nano-flame retardant due to its high thermal stability and thermal shielding effect. Here, Fe 3+ -doped polydopamine (PDA@Fe) was first immobilized on the BN surface to provide abundant functional groups and enhance its catalytic carbonization capability. Subsequently, high-phosphorus phytic acid (PA) and cobalt-nickel borate nanosheets (Co-Ni/B) were loaded onto the BN/PDA@Fe surface to prepare the BN/PFPA@Co-Ni/B composite flame-retardant material. Notably, this multi-level structured nano-reinforcer combines the synergistic flame-retardant effect of high P-N-B content with the highly efficient catalytic charring ability of multiple metal ions (Fe, Co, Ni). Notably, the BN/PFPA@Co-Ni/B/EP composite coating achieved the lowest back surface temperature (167.9 °C) and exhibited the highest expansion height (25.2 mm) and expansion ratio (19.69), demonstrating its excellent thermal insulation performance. Furthermore, the BN/PFPA@Co-Ni/B/EP composite coating exhibited the highest residual carbon content (29.9%) and the lowest smoke density (39.2%). This can be attributed to the strong catalytic pyrolysis effect of the multi-metal ions, which converts more pyrolysis intermediates into stable carbon, thereby increasing carbon residue while reducing smoke emissions. Microstructural analysis revealed a dense and intact carbon layer, providing strong support for its exceptional thermal protection performance. The successful preparation of this novel flame retardant, which combines high barrier properties, high phosphorus and nitrogen content, and multi-metal-catalyzed carbonization, offers a new approach for developing high-performance refractory coatings. Download: Download high-res image (430KB) Download: Download full-size image
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Journal of Agriculture and Food Research
·
2026
·
IF 7.2
Rongting Min,Aji Li,Houxier Li,Li Yang,Nan Zhang,Jiahui Wu,Xiang Wang,Lei Li,Maochun Xiao,Shiyao Su,Mengling Yang,Jingmei Wang,Zhiqiu Yang,Miaomiao Chang,Xueyong Wang
Salvianolic acid B (SA) has significant regulatory effects on glucolipid metabolism. Combining SA with resistant starch endowed this type of starch with unique functional properties. This study represents the first direct complexation between SA and Canna edulis type 3 resistant starch (RS3). The findings indicated that SA has a beneficial effect on the physicochemical and prebiotic properties of RS3. SA and RS3 form a complex via non-covalent interactions, thereby increasing the crystalline and gelatinization temperatures. The 1 H NMR spectrum exhibited aromatic ring signals and increased hydroxyl signal intensity. Concurrently, the solubility of SA-RS3 decreased after composite formation, while the expansion, water absorption index and resistant starch content (59.40%) increased markedly. Fermentation analysis revealed decreases in pH and increases in reducing sugar content, in vitro antioxidant activity and hypoglycemic activity. Interestingly, SA-RS3 substantially increased the relative abundance of the Firmicutes and Actinomycetes phyla, promoted the proliferation of the beneficial bacterium Bifidobacterium , inhibited the growth of Klebsiella and Sutterella , and increased the content of acetic, propionic, and butyric acids. This indicates that SA confers antioxidant properties while retaining the prebiotic properties of raw RS3. Consequently, SA-RS3 demonstrates potential for blood glucose regulation and exhibits in vitro prebiotic properties, offering a novel direction for the development of RS3-type functional foods.
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