CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Yuhua Xie,Yumei Feng,Chen Li,Fang Luo,Qing Li,Shiao Zhu,Mingxing Gong,Zehui Yang
The industrial development of acidic water splitting significantly counts on the activity associated with stability of oxygen evolution reaction (OER) electrocatalyst. In this work, we have constructed cubic Rh@Ir core–shell for acidic water splitting. The formed Rh@Ir electrocatalyst shows a high HER performance with only 29 mV overpotential for 10 mA cm −2 , stemming from the upshifted and downshifted d band center of Ir and Rh, leading to a moderate hydrogen binding strength. The Ir atom donates its electrons to nearby Rh atoms triggering a high susceptibility in nucleophilic attack by H 2 O to generate *OOH; thereby, the overpotential required to achieve 10 mA cm −2 is 216 mV for Rh@Ir core–shell, better than commercial IrO 2 . Moreover, the stability is superior to commercial IrO 2 and pure Ir electrocatalyst due to the strong electronic interplay in Rh@Ir contributing to a better resistance towards electrochemical dissolution proved by operando Raman and electrochemical impedance spectroscopies. Only 1.55 V is needed for Rh@Ir to drive overall water splitting at 10 mA cm −2 .
研究领域:
电化学
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材料科学
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催化
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能源材料
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产品关联
DOI
高影响因子
GLASS PHYSICS AND CHEMISTRY
·
2020
·Vol. 46
·期 2
·181-185
·
IF 0.668
Kai Ma
Abstract In this paper, we present a new cubic boron nitride synthesis method via introduction of highly reactive nitrogen and boron atoms generated from chemical reactions as the raw materials of cubic boron nitride, so the system pressure and temperature are reduced significantly compared with the traditional phase transformation method at super high-pressure and high-temperature, and then the production cost of cubic boron nitride can be reduced greatly and the equipment service life can be extended significantly. Experiments have shown that by this method the cBN can be synthesized with high yield at pressures as low as 2.5 GPa and temperatures as low as 450°C. Compared with the conventional phase transformation method, the pressure decreases by about 50% and the temperature decreases by about 64%. Analyses have shown that the crystal structure of the cBN synthesized is perfect and the impurity content is extremely low.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
Water
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2024
·Vol. 16
·期 12
·1690
·
IF 3
Jingjing Yang,Jie Zhang,Jintong Liu,Quanxin Yang,Bingdang Wu,Xiaoyi Xu,Tianyin Huang
In order to recover the antimony from wastewater, a custom-designed fluidized-bed reactor (FBR) was employed to treat antimony-containing wastewater. By single-factor experiments, the effects of the solution pH, the molar ratio of [TA]/[Sb3+], the seed size and dosage, the up-flow velocity (U), and the hydraulic retention time (HRT) on antimony recovery were investigated based on the antimony removal and granulation efficiency. The optimum conditions for antimony recovery were obtained at pH 9.0, the molar ratio of [TA]/[Sb3+] of 2, 6 g/L of 13–38 μm Sb2O3as the fluidized seed, and the U and HRT of 42 m/h and 40 min, respectively; the antimony removal and granulation efficiency reached 95% and 91%, respectively. The granular products were analyzed by an X-ray polycrystalline diffractometer (XRD) and scanning electron microscopy (SEM) as cubic Sb2O3, widely used in various industries. The fluidized-bed reactor was operated continuously for 7 days, during which the antimony removal and granulation efficiency were stable at 96% and 93%, respectively. This study demonstrated the feasibility of the fluidized-bed granulation process for the recovery of antimony from wastewater. It provides a novel approach for retrieving and managing antimony-containing wastewater.
研究领域:
环境工程
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材料科学
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DOI
高影响因子
Frontiers in Pharmacology
·
2025
·
IF 4.8
Zhiqi Shi,Fan Jia,Xiaoyu Tang,Qing Li
Background Knee osteoarthritis (KOA) is a prevalent degenerative joint disease with limited effective treatment options. Oleanolic acid (OA) possesses promising anti-inflammatory and cartilage-protective properties, but its clinical application is hindered by poor solubility and rapid metabolism. Purpose This study aimed to develop an oleanolic acid-loaded liquid crystalline nanogel (OANG) for intra-articular delivery and to systematically evaluate its therapeutic effects and potential mechanisms in a rat KOA model. Methods OA-loaded nanoparticles were prepared and incorporated into a thermosensitive Poloxamer gel base to form OANG. A papain-induced KOA rat model was established. Rats were administered OANG (high/low dose) intra-articularly, with celecoxib as a positive control. Evaluations included behavioral tests, micro-computed tomography, histological analyses (hematoxylin and eosin, transmission electron microscopy, immunohistochemistry), enzyme-linked immunosorbent assay of synovial fluid, serum, and hippocampus, Western blot (WB), network pharmacology, and molecular docking. Results OANG exhibited sustained-release properties and improved joint lubrication. Treatment with OANG significantly alleviated KOA-induced pain and depression-like behaviors, reduced cartilage degradation and subchondral bone sclerosis, and downregulated levels of pro-inflammatory cytokines (tumor necrosis factor-α, interleukin-1β, interleukin-6) and cartilage degradation markers (C-terminal cross-linked telopeptide of type II collagen, cartilage oligomeric matrix protein) in synovial fluid. It also enhanced antioxidant capacity (increased superoxide dismutase, glutathione peroxidase; decreased malondialdehyde) and modulated the expression of key cartilage proteins (increased Collagen II; decreased matrix metalloproteinase 13; regulated glycogen synthase kinase-3β/SRY-box transcription factor 9, β-catenin, and Yes-associated protein). Furthermore, OANG ameliorated hippocampal oxidative stress and inflammation (decreased Cleaved caspase-3, Malondialdehyde; increased IL-10). Network pharmacology and docking suggested the involvement of peroxisome proliferator-activated receptor gamma, mitogen-activated protein kinase 3, prostaglandin-endoperoxide synthase 2, and pathways such as estrogen signaling and cyclic adenosine monophosphate signaling.
研究领域:
药剂学
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骨科学
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分子药理学
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纳米医学
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炎症生物学
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氧化应激
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关节退行性疾病
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF RARE EARTHS
·
2026
·
IF 9.6
Bing Yu,Guoqiang You,Lei Wang,Kaixuan Zhou,Yong Zhao,Bin Jiang
The Gd-rich cubic phase, which is ubiquitous in Mg-Gd alloys, plays a crucial role in determining their mechanical properties. However, its chemical composition has long been debated, and it has often been misidentified as MgGd or GdO. This study focuses on the origin and hereditary characteristics of the cubic phase. Through multiscale characterization techniques such as X-ray diffraction analysis, scanning electron microscopy, focused ion beam, and transmission electron microscopy, the microstructural evolution of three as-cast Mg-Gd binary alloys and their diluted counterparts (Mg-10 wt% Gd) was systematically investigated. The spatial distribution, crystal structure, and chemical composition of the cubic phase were examined. Microstructural analysis reveals that the cubic phase in the Mg-Gd binary alloy exhibits a face-centered cubic structure (lattice parameter a ≈ 0.5328 nm), and it is identified as GdH 2 . Additionally, trace amounts of α-Gd are detected. Upon dilution to Mg-10 wt% Gd, the GdH 2 phase remains largely undissolved, demonstrating stable hereditary characteristics, whereas the submicron α-Gd phase completely dissolves. The hereditary characteristics of GdH 2 are closely associated with the H content in the melt and the initial microstructure of the Mg-Gd binary alloy. This study resolves the existing controversy regarding the cubic phase, establishing a theoretical foundation for optimizing the design of Mg-Gd alloys and enhancing the strength–ductility synergy.
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DOI
高影响因子
RARE METALS
·
2025
·Vol. 44
·期 5
·3339-3350
·
IF 11
Wang Wen-Ying,Zhu Jun-Liang,Bo Lin,Zhou Wen-Ying,Liu Xing-Shuo,Li Chang-Cun,Zhang Zheng,Zhao De-Gang
The rock-salt cubic SnSe compound with multiple valleys and inherent low thermal conductivity is considered to be a promising thermoelectric compound. In this study, heterogeneous Pb atoms were strategically introduced into the lattice of cubic SnSe matrix, synergistically adjusting the thermoelectric transport properties of samples by optimizing hole carrier concentration ( n ) and suppressing thermal conductivity ( κ tot ). When the doping content reached 0.08 mol, the peak power factor (PF) at 300 K increased to 20.00 μW·cm –1 ·K –2 . The growing internal microstrain induced by the differences in atomic size strengthened the phonon scattering and effectively reduced the lattice thermal conductivity ( κ L ). With further decoupling of the electrical and thermal transport properties, a peak thermoelectric figure of merit ( ZT ) of 0.82 and an average ZT of 0.42 (300–750 K) were achieved in the samples doped with 0.10 mol Pb. These findings highlight the effectiveness of the selected dopants and demonstrate their synergy in improving the performance of thermoelectric materials. Graphical
研究领域:
材料科学
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凝聚态物理
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能源材料
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热电转换
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半导体物理
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Yan Wang,Menghui Wan,Yanbao Zhao,Lei Sun
Smart controlled-release nanopesticide systems offer enhanced pesticide efficiency through targeted delivery. In this study, we prepared sulfur-containing square mesoporous silica (S-MSN) carriers, combined them with carboxymethyl chitosan (CCS) to build a dual-responsive pesticide delivery platform (DNF@S-MSN@CCS) for sustained pesticide release. The S-MSN carriers demonstrated a high drug loading capacity of 21.3 %, excellent biocompatibility, responsive degradation and improved pesticide retention on hydrophobic leaves. Compared with spherical carriers, the cubic drug-loaded system shows a 33 % improvement in resistance to rain wash and a 38.8 % increase in liquid-holding capacity. Superior foliar adhesion and UV-shielding properties reduced photodegradation, extending DNF's UV half-life 6-fold compared to pure dinotefuran (DNF). Bioassays showed equivalent mortality against Plutella xylostella larvae as conventional formulations at reduced dosages. This work presents an effective strategy for sustainable pest management.
研究领域:
纳米农药
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材料科学
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农业化学
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环境友好农药递送
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智能控释系统
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产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 34
·期 12
·2310016
·
IF 19
Yi Chang,Zhili Li,Pengfei Luo,Weixiong Qian,Jiye Zhang,Jun Luo
Since the discovery of superior ductility in semiconducting Ag 2 S at room temperature, Ag 2 S-based inorganics attract ever-increasing attention as ductile thermoelectrics (TEs) for flexible electronics, while the monoclinic to cubic structure transition near room temperature (≈455 K for Ag 2 S) of these materials leads to instability of their structures and properties. In this work, single-phase cubic Ag 2 S 1−2 x Se x Te x ( x = 0.13–0.33) samples are stabilized at room temperature via entropy engineering. In comparison with pure Ag 2 S, the random mixing of S, Se, and Te at the anion site results in increased configuration entropy, improved electrical conductivity, decreased lattice thermal conductivity, and thus significantly enhanced TE properties of cubic Ag 2 S 1−2 x Se x Te x samples. By further optimizing the carrier concentration through introducing Ag vacancies, the slightly Ag-deficient Ag 1.98 S 0.34 Se 0.33 Te 0.33 sample achieves a power factor of 6.1 µW cm −1 K −2 and a dimensionless figure of merit zT of 0.4 at room temperature. In the measured temperature range of 300–500 K, this cubic sample with excellent ductility shows not only a record average zT value of 0.62 in ductile inorganics but also very stable TE properties, demonstrating the great potential of entropy engineering in the design of high-performance ductile TE inorganics.
研究领域:
材料科学
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凝聚态物理
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无机功能材料
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热电转换
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柔性电子学
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固态化学
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纳米能源材料
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 30
·2202245
·
IF 19.924
Tingting Liang,Xiaqing Zhang,Lijun Su,Ruilin Hou,Bingjun Yang,Junwei Lang,Shengrong Yang,Xingbin Yan
Perovskite materials can store charge through rapid oxygen anions intercalation. Although numerous perovskite materials owing to rich selections of A and B-site elements are reported as electrodes of supercapatteries, the effect of the crystal structure of perovskite materials on their electrochemical performance has never been studied so far. Herein, using SrCo 0.9 Mo 0.1 O 3− δ , SrFeO 3− δ , Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3− δ , and LaMnO 3− δ as research targets, it is proved that their corresponding cubic structure materials display the best electrochemical performance. And then, the origin of such superiority of cubic structure for SrCo 0.9 Mo 0.1 O 3− δ is explored through experimental investigations and theoretical calculations. The results show that the increase in the content of oxygen vacancies and the enhancement of B-O hybridization of cubic structure can optimize the electronic structure of the perovskite materials, thereby improving its conductivity and accelerating the reaction kinetics. The filtering strategy based on crystal structure proposed by this report will provide a new perspective to faster and more efficient choice of perovskite materials for supercapatteries.
研究领域:
材料科学
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电化学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2015
·
IF 4.097
Hongbo Li,Jing Li,Daye Chen,Yanxia Qiu,Wei Wang
A novel non-enzymatic and oxygen-sensitive photoelectrochemical (PEC) sensor for glucose was first constructed based on dual-functional cubic cuprous oxide. Herein, cuprous oxide acts both as an excellent catalyst for the preoxidation of glucose and as a photocathode for the PEC non-enzymatic glucose sensing. The fabricated cuprous oxide was characterized by scanning electron microscopy, X-ray diffractometry, X-ray photoelectron spectrometry, and UV–vis spectrophotometry. Under the optimized conditions, the PEC sensing was linear in its response to the logarithm of concentration of glucose in the range of 0.0005 to 6 mmol L −1 with a detection limit of 0.3 μmol L −1 . The same concentration of other common species did not interfere with the detection of glucose, and the results of the PEC sensor corresponded well with those obtained by the commercially available enzymatic glucose sensor. This novel non-enzymatic and oxygen-sensitive PEC sensor exhibited good performance with its high sensitivity, good selectivity, wide linear range, low cost, and portable features. Also it provides an alternative way for improving non-enzymatic PEC sensor of glucose.
研究领域:
生物传感器
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材料科学
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分析化学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2018
·Vol. 9
·期 1
·1-8
·
IF 12.353
Li Bo,Zhang Yanan,Fu Lin,Yu Tong,Zhou Shujie,Zhang Luyuan,Yin Longwei
Owing to inevitable thermal/moisture instability for organic–inorganic hybrid perovskites, pure inorganic perovskite cesium lead halides with both inherent stability and prominent photovoltaic performance have become research hotspots as a promising candidate for commercial perovskite solar cells. However, it is still a serious challenge to synthesize desired cubic cesium lead iodides (CsPbI 3 ) with superior photovoltaic performance for its thermodynamically metastable characteristics. Herein, polymer poly-vinylpyrrolidone (PVP)-induced surface passivation engineering is reported to synthesize extra-long-term stable cubic CsPbI 3 . It is revealed that acylamino groups of PVP induce electron cloud density enhancement on the surface of CsPbI 3 , thus lowering surface energy, conducive to stabilize cubic CsPbI 3 even in micrometer scale. The cubic-CsPbI 3 PSCs exhibit extra-long carrier diffusion length (over 1.5 μm), highest power conversion efficiency of 10.74% and excellent thermal/moisture stability. This result provides important progress towards understanding of phase stability in realization of large-scale preparations of efficient and stable inorganic PSCs.
研究领域:
材料科学
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光伏技术
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纳米技术
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能源材料
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DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Jun Cai,Yuanhang Ren,Yi Xia,Lei Tao,Xueqian Wang,Langlang Wang,Ping Ning,Yixing Ma
A cubic SrTiO 3 (STO) composite material co-doped with Ce and Cr ions was synthesized by solvothermal method . The fully characterized samples were employed as photocatalysts for the oxidation of Hg 0 . The co-doped samples afforded excellent catalytic removal efficiency of 98.99% using UV irradiation and 89.9% using visible light irradiation for Hg 0 compared with the single-doped samples. It was found that co-doped samples had a lower electron-hole recombination rate, largest Brunauer-Emmett-Teller specific surface area , and reduced band gap. The electron spin resonance results revealed that ·O 2 − and ·OH were the main active species in the catalytic process. Moreover, the co-doped samples exhibited the best electron transfer rate and the highest photocurrent response intensity. The electron transfer between the elements in the co-doped sample enables it to achieve stable and efficient catalytic performance. In addition, even after five consecutive catalytic runs, the co-doped sample maintained high catalytic activity . This work highlights the potential of the perovskite-type STO materials in the photocatalytic oxidation of gaseous mercury.
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DOI
高影响因子
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