JOURNAL OF CATALYSIS
·
2019
·
IF 7.723
Hongye Qin,Biao Zhang,Yaping Pan,Xixi Wang,Lechen Diao,Jiao Chen,Jinli Wu,Enzuo Liu,Junwei Sha,Liying Ma,Naiqin Zhao
Developing efficient and low-cost electrocatalysts for hydrogen evolution reaction (HER) is important in clean energy systems. Non-noble transition metals are the most promising candidates for the replacement of conventional Pt group catalysts of HER . However, most non-noble metals show poor HER activity due to the intrinsic electronic structures. Herein, P atoms doped Ni 3 S 2 (P-doped Ni 3 S 2 ) nanosheets array grown on Ni foam has been successfully synthesized and further applied as the efficient electrocatalysts for HER in alkaline media. P-doped Ni 3 S 2 shows higher catalytic activity for HER compared with pristine Ni 3 S 2 , which affords the current densities of 10 mA cm −2 at an overpotential of 139 mV and long-term stability over 110 h. Density functional theory (DFT) calculations reveal that the introduction of P atoms modify the electronic structure of Ni 3 S 2 , enhance the electrical conductivity, optimize the HER Gibbs free-energy (Δ G H* ) and the change of water adsorption energy (Δ G H2O* ), and reduce the barrier of water dissociation optimize the HER Gibbs free-energy (Δ G H* ), change water adsorption energy (Δ G H2O * ) and reduce the barrier of water dissociation. Remarkably, energy integral of a crystal orbital Hamilton population (ICOHP) gives access to the contribution of an atom or a chemical bond to the distribution of one-particle bonding within the transistion state of water dissociation and reveals the reduced essence of water dissociation barrier.
研究领域:
材料科学
·
电催化
·
理论计算
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高影响因子
MATERIALS LETTERS
·
2020
·
IF 3.204
Haiyan Zhang,Sen Liu
SnO 2 /Co 3 O 4 n-p heterojunctions have been prepared by organometallic chemistry-assisted approach, where holy Co 3 O 4 nanosheets and (CH 3 ) 2 SnCl 2 were used as precursors. It is found that the surface oxygen-containing species could be regulated by changing the ratio of Co 3 O 4 precursors and Sn-containing organic compound. Our present work is of importance because it provides a new and effective approach for construction of heterojunctions .
研究领域:
材料科学
·
化学工程
·
纳米技术
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高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 3
·2063-2076
·
IF 6.123
Li Na,Chen Panpan,Liu Dongni,Kang Gaowei,Liu Liu,Xu Liyun,Yu Jianyong,Li Faxue,Wu Dequn
Cotton fabric has a wide application due to its hygroscopicity, air permeability, and large production of cotton fiber used to make the fabric. However, cotton materials are a safety hazard during its application because of flammability (limiting oxygen index is about 18%). In order to improve the flame retardancy of cotton fibers and reduce the damage of its mechanical properties, novel P/Si based flame retardant (PFR) nanoparticles were synthesized by one-step radical polymerization. Vinyl phosphoric acid and tetramethyl divinyl disiloxane were introduced into the nanoparticles. The structure, morphology and thermal stability of PFR was characterized by fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), thermogravimetric analysis test (TGA). Durable flame retardant cotton fibers were prepared by dip-coating and plasma induced crosslinking methods. Micro-calorimeter (MCC) characterization showed that the peak of heat release rate (pHRR) and the total heat release (THR) were reduced by 47.3% and 29.8% for modified cotton fibers compared with pure cotton fibers. Limiting oxygen index (LOI) of modified cotton fibers was increased to 27%. The residue carbon of modified cotton fibers was 19.0% at 700 °C, while the value of pure cotton fibers was 3.0%. Besides, durability of the modified cotton fibers was approved by cyclic washing test. In addition, flame retardant mechanism was revealed by collecting and analyzing condensed and gaseous pyrolysis products. The data of FE-SEM for residue carbon, FT-IR spectra of products at different pyrolysis temperatures and pyrolysis gas chromatography mass spectrometry (Py-GC–MS) showed that PFR was a synergistic flame retardant contained barrier and quenching effecting applied on cotton materials. Graphical abstract Novel phosphorus-silicon based nanoparticles were synthesized by one-step radical polymerization and applied to improve the flame retardant of cotton materials by dip-coating and plasma induced crosslinking.
研究领域:
材料科学
·
纺织工程
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高影响因子
JOURNAL OF RAMAN SPECTROSCOPY
·
2026
·
IF 2.2
DongFei Li,JianShuo Ji,NaiCui Zhai,Mi Zhou,Shuo Guo
Raman spectroscopy data of p -toluamide (PTA) polycrystals in the spectral region of 100–3500 cm −1 under high pressure have been collected up to 14.8 GPa at room temperature. Raman spectra exhibited distinct changes during compression, including the appearance of new Raman bands, disappearance of original Raman bands, and discontinuous changes in Raman shifts. The pressure dependence of the Raman shifts of PTA has been obtained. Detailed Raman spectral analysis suggested that compression induces three structural phase transitions of PTA within the investigated pressure range: phase I to II at 1.8 GPa, phase II to III at 5.5 GPa, and phase III to IV at 13.1 GPa. Moreover, the effect of pressure on the N H stretching vibrational modes has been analyzed based on the hydrogen bonds rearrangements among PTA molecules. This study provides a comprehensive understanding of PTA vibrational mode assignments and valuable insights into the amide structure stability for medicinal and pharmacological applications.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Dongdong Yang,Ming Wu,Ziyang Zhang,Xiaozhuo Ku,Xiangui Shang,Lijun Liang,Liangliang Dong,Junqiang Zhao,Yiping Zhao,Zhongyi Jiang
Twisted HPZ monomer enables tunable separation layer microstructure via NaOH-modulated interfacial polymerization. • HPZ@0.33 achieves high selectivity, while HPZ@0.50 delivers ultrahigh permeability. • Rigid non-planar conformation increases free volume and enhances pore connectivity. • Dual-membrane technology achieves resource recovery of high-salinity dye wastewater. The microstructure of polymer membranes critically governs two key performance parameters, namely permeance and selectivity, and thus directly influencing overall separation efficiency. Novel loose nanofiltration (LNF) membranes were prepared by interfacial polymerization using p -hydroxyphenylpiperazine (HPZ), a nonplanar aqueous phase monomer containing phenolic hydroxyl and secondary amine groups. By modulating NaOH additive concentrations, hierarchical tuning of the separation layer's microstructure was achieved by altering ester-amide condensation-hydrolysis equilibria. The optimized HPZ@0.33 membrane (0.33 wt% NaOH) demonstrated exceptional selectivity with a Congo red/NaCl separation factor of 210 and a permeance of 40 L m −2 h −1 ·bar −1 . Increasing NaOH concentration to 0.50 wt% induced ester bond hydrolysis, expanding pore radii and reducing layer thickness. This yielded the HPZ@0.50 membrane with ultrahigh permeance (220 L m −2 h −1 ·bar −1 ) while maintaining 98.65% Congo red rejection. Due to the twisted conformation and rigid benzene ring of HPZ, the as-prepared separation layer had a high porosity and improved the pore interconnection, enabling it to operate stably at low pressure (0.5-2 bar). Furthermore, dual-membrane coupling technology effectively desalinated high-salinity dye wastewater. This study provides insights into mitigating the permeability-selectivity trade-off in membrane design, offering a potentially scalable and cost-effective strategy to advance resource recovery in sustainable water management systems. Download: Download high-res image (483KB) Download: Download full-size image
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高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
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2026
·
IF 6
Guanlin Zhou,Chengwei Wu,Wei Zhang
Chemoresistance remains a major obstacle to the efficacy of cancer chemotherapy. The tumor mechanical microenvironment such as substrate stiffness, fluid shear stress, and solid stress can considerably influence drug resistance. Compared with normal tissues (∼0.7 cP), high extracellular fluid viscosity (∼8 cP) is another typical mechanical feature of tumors. However, whether cancer cells can sense this mechanical stimulus and engage mechanosensitive signaling to influence chemoresistance remains unclear. We found that high-viscosity treatment promotes P-gp (ABCB1) expression, enhancing doxorubicin (DOX) chemoresistance. The elevated viscosity increased the density of the F-actin–vinculin cytoskeleton and promoted Na + /H + exchanger 1 (NHE1)/aquaporin 1 (AQP1)-dependent water influx, increasing cell membrane tension, as suggested by atomic force microscopy (AFM) and fluorescence lifetime measurements. This high tension may enhance the activity of the mechanosensitive channel transient receptor potential vanilloid 4 (TRPV4), which promotes Yes-associated protein (YAP) nuclear translocation, as evidenced by increased intracellular Ca 2+ fluorescence and nuclear YAP fluorescence intensity. The elevated expression of the YAP target genes CTGF and CYR61 indicates the enhanced transcriptional activity of nuclear-localized YAP. The inhibition of YAP transcriptional activity suppressed the high viscosity–induced increases of P-gp mRNA and protein levels, supporting the YAP dependence of P-gp upregulation. Reducing tumor viscosity may provide new insights for overcoming drug resistance in clinical settings.
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DOI
PubMed
高影响因子
NATURE
·
2026
·Vol. 654
·期 8117
·69-75
·
IF 56.1
Wang Di,Li Saisai,Ding Zijin,Xu Jian,Chen Xingyu,Zheng Qiao,Alshahrani Thamraa,Liu Siyu,He Tingwei,Yue Xinxin,Qaid Saif M. H.,Wei Keyu,Fu Xuewen,Feng Lin,Yang Ou,Ju Huanxin,Jiang Yuanzhi,Chen Jun,Yuan Mingjian
Conventional n–i–p architecture remains a robust platform for scalable perovskite photovoltaics 1 , 2 , yet its steady-state efficiency has stagnated at about 26% (ref. 3 ), lagging behind their p–i–n counterparts 4 . This performance gap arises from persistent non-radiative recombination at textured electron transport layer (ETL)/perovskite interfaces, yet the underlying physical origin remains unknown. Here we show that these losses originate from the synergistic combination of band misalignment and electron accumulation at the buried interface. To address this dual challenge, we develop a continuously graded n + /n-doped SnO 2 ETL through a ligand-competitive binding strategy, which enables spatially defined doping that creates a built-in electric field. This graded architecture simultaneously minimizes band offset and accelerates electron extraction, thereby effectively suppressing the cross-interface recombination. The resulting n–i–p perovskite solar cells (PSCs) achieve a certified steady-state power conversion efficiency (PCE) of 27.17% (27.50% in reverse scan), the highest for n–i–p PSCs reported so far. The scalability of this strategy is further demonstrated by achieving a PCE of 25.79% for a 1 cm 2 device and 23.33% for a perovskite module with a 16.02 cm 2 aperture area. This work establishes a generalized example for energy-band engineering in metal-oxide transport layers, overcoming a fundamental efficiency bottleneck in conventional perovskite photovoltaics.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Longyan Zhang,Gang Zhao,Xinming Wu
Molybdenum disulfide (MoS 2 ) has been widely studied in supercapacitors due to its high theoretical capacity, but the lower intrinsic conductivity limits its further application. In this paper, Al, P-doped MoS 2 was grown in situ on carbon cloth using a one-step hydrothermal method, respectively, and the implementation of the doping strategy increased the layer spacing of MoS 2 while synergistically improving the conductivity and specific capacitance of the material. The results show that Al, P doping not only enhance the conductivity of pristine MoS 2 by 35.8% and 21.1%, respectively, but also improve the specific capacitance from 284.4 F g -1 (at a current density of 0.5 A g -1 ) to 424.6 F g -1 and 449.2 F g -1 , respectively. Surprisingly, the ASC device assembled with Al 0.05 -MoS 2 as the positive electrode and P 0.05 -MoS 2 as the negative electrode achieved an energy density of 30.07 Wh kg -1 at a power density of 1259.99 W kg -1 . These results demonstrate the superiority of Al, P-doped MoS 2 nanoflowers for high-performance supercapacitor applications.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
DRUG DELIVERY
·
2025
·
IF 8.1
Xuelian Luo,Xiaohan Wu,Haifeng Ai,Chunrong Li,Hanghang Jiang,Conghui Wang,Jielin Liu,Song Xiao
Photodynamic therapy (PDT) represents a promising noninvasive modality for the selective targeting of tumors. However, its clinical utility is often constrained by the aggregation-induced quenching of photosensitizers and suboptimal reactive oxygen species (ROS) generation. In contrast, gene therapy has exhibited potent antitumor efficacy through the specific silencing of oncogenic targets. In this study, we developed a cationic photosensitizer-based nanocarrier, PEI-PEG-PpIX, designed to deliver the shRNA-BLM plasmid (p-shBLM). The PEI-PEG-PpIX/p-shBLM complex demonstrated a threefold increase in ROS production compared to free PpIX, along with a 57.5% enhancement in transfection efficiency. When this method was combined with photodynamic therapy for the treatment of neuroblastoma, the system significantly suppressed tumor cell proliferation, resulting in an 83.67% tumor growth inhibition rate in murine models. This outcome effectively demonstrates the synergistic integration of gene therapy and photodynamic therapy. Furthermore, the multifunctional nature of this platform enables real-time tumor imaging, thereby facilitating image-guided diagnosis and therapeutic monitoring. Overall, this strategy presents a noninvasive, efficient, and targeted approach to cancer treatment, offering valuable insights for future translational applications.
研究领域:
肿瘤学
·
纳米医学
·
光动力治疗
·
基因治疗
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Juanhua Kong,Jinrong Liang,Xiong Zhang,Quanxi Lu,Sijie Liu,Qiang Zeng,Zhenping Cai,Jinxing Long,Xuehui Li
The new technology for lignin to value-added aromatic chemicals is of great significance in the fields of spices, cosmetics and pharmaceutical industry. Herein, a novel surfactant-free microemulsion reactor composed of methanol, n -butanol and n -hexane was designed for bagasse lignin depolymerization and in-situ esterification to p -hydroxycinnamate esters (PCE) using dicationic ionic liquid as the catalyst. Due to amphipathy of the ionic liquid and lignin, both of them can be enriched on the surface of so constructed microemulsion, resulting to an efficient process intensification for lignin conversion. Therefore, 13.8 % yield of PCE are obtained with a selectivity of 81.2 % after 4 h at 453 K. Experimental results about lignin model compound conversion reveal that the dicationic ionic liquid can efficiently activate the C-O and ester bonds in lignin and enhance the in-situ esterification process to generate PCE selectively. Therefore, this work provides a novel strategy for producing PCE from agricultural residues under mild conditions.
研究领域:
绿色化学
·
生物资源技术
·
离子液体
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生物炼制
·
可持续能源
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产品关联
DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2025
·
IF 2.4
Guinan Lu,Cuilian Yi,Lingbo Hao,Chenyi Wang,Xiaoyan Zhao
Based on the rigid structure and conjugation effect of terphenyl, a series of p-terphenyl copolymers (TP-x) were synthesized in this study to investigate the effect of p-terphenyl group on the thermal, optical, and processability of the materials. It was found that Td of the polymers increased from 390 °C (10% p-triphenyl content) to 407 °C (30% p-triphenyl content) in O2. In addition, the fluorescence intensity of the polymer in liquid state enhanced with the enhancement of p-terphenyl content. However, in the solid state, the fluorescence intensity of the samples actually decreased with the increase of p-terphenyl. This is related to the aggregation state of molecular chains. In order to avoid the fluorescence quenching phenomenon caused by the stacking of molecular chains, the polymers were produced into the nanofiber membranes. The electrospun fibers exhibited the bright blue. The fluorescence stability of the fiber membranes were further studied via immersing the fiber sample in different pH solutions. The results showed that the membranes exhibited relatively stable luminescence under acidic conditions, and the fluorescence retention rate under alkaline conditions could reach to 86.5%. This indicates that the polymer membranes developed in this work can be the competitive candidate for flexible fluorescent labeling.
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高影响因子
Journal of Materiomics
·
2019
·Vol. 5
·期 3
·489-495
·
IF 0
Ruonan Wu,Zhili Li,Yongbo Li,Li You,Pengfei Luo,Jiong Yang,Jun Luo
Superionic conductors, which exhibit liquid-like phonon transport but crystal-like carrier transport, have attracted great attention and broad research interest in the thermoelectric community. Ag 2 Te is a superionic conductor; however, its small band gap and large Ag vacancy formation energy impede its application as a prominent p-type thermoelectric material. In this work, synergistic optimization of the thermoelectric performance of Ag 2 Te through Cu substitution is realized through a combination of experimental and theoretical efforts. For the electrical transport, Cu substitution systematically increases the band gap of Ag 2 Te and reduces the cation vacancy formation energy. These two beneficial effects simultaneously increase the electrical conductivity and suppress the bipolar effect, thereby greatly enhancing the p-type electrical transport properties of Ag 2 Te. For the thermal transport, alloying Cu 2 Te with Ag 2 Te significantly reduces the thermal conductivity through not only point defect scattering but also softening of the interatomic interactions. The latter is attributed to the relatively small Cu atoms vibrating in the oversized 8c sites. This two-fold optimization results in maximum thermoelectric figure of merit zT values of over 1.3 at 773 K for both Ag 1.2 Cu 0.8 Te and AgCuTe, demonstrating the great potential of Ag 2− x Cu x Te as a promising p-type thermoelectric material system.
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