INORGANIC CHEMISTRY
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2026
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IF 4.6
Hushan Zhang,Xiaoman Li,Liying Wang,Xiaoying Hai,Min Luo
Electrocatalytic nitrite reduction offers a sustainable route to convert hazardous water pollutants into valuable ammonia, yet its efficiency is often stifled by the competitive hydrogen evolution reaction (HER) and sluggish kinetics. Herein, we report the rational design of a quinary alloy catalyst, Co25Cu15@NiMnMg, featuring a distorted face-centered cubic (FCC) structure for highly efficient NO2RR. By precisely tailoring the metal ratios via a sol–gel method, the electronic structure and active site distribution were optimized to break the linear scaling relations. In an alkaline electrolyte, the catalyst delivers an outstanding ammonia yield of 3528.04 μg h–1 cm–2 with a Faradaic efficiency of 96.8% at −0.5 V vs RHE, significantly outperforming most binary benchmarks. Mechanistically, in situ Fourier transform infrared spectroscopy (FTIR) and electrochemical X-ray photoelectron spectroscopy (XPS) reveal a distinct site-specific synergy: Co sites act as the primary centers for NO2– capture and hydrogenation, while Cu moieties regulate the local hydrogen environment to suppress the HER. Additionally, the Ni–Mn–Mg matrix serves as a structural scaffold to enhance conductivity and stability. This work presents a compelling “multielement synergy” strategy for developing advanced electrocatalysts, offering a dual solution for environmental remediation and green energy carrier synthesis.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Wei Yang,Qin Zou,Chenxin Wang,Yuankun Ren,Rui Zhang,Mingyue Lin,Xueqi Zhang,Yu Liu,Boyang Wang,Wei Li,Li Jiang,Xiyu Li
Traditional bone repair scaffolds often struggle to meet the demands of complex bone defect regeneration due to insufficient early osteogenic stimulation or osteogenesis. In this study, we proposed a synergistic strategy to combine PHA (PCL/HA) scaffolds with HA-internalized osteoblasts (OHA) and osteonectin (ON), where OHA provides fast calcium and phosphate ion release via lysosomal degradation, and ON facilitates calcium phosphate–collagen binding to jointly enhance the early bone regeneration. This “OHA + ON” dual-pathway synergy helps to overcome the limitations of poor early osteogenesis or insufficient Ca/P ion release. The results demonstrated that the PHA + ON+OHA combination was much superior to PHA or PHA + ON scaffolds in terms of the osteogenic gene expression, osteoblast proliferation and mineralization in vitro , and the osteogenic capability in subcutaneous model and femoral defect model in vivo . These findings suggest that the “OHA + ON” synergistic strategy realizes an early pro-osteogenesis, optimizes the osteogenic process, and elevates the new bone quality, offering a viable approach for future clinical repair of complex bone defects.
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KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.4
Chen Jianjun,Wu Haowen,Ru Lei,Bai Hailong,Han Mingjie,Feng Hua,Men Jiying
In this work, surface molecularly imprinted polymers Co-MOF/CNT@MIPs were prepared based on metal-organic framework (MOF) and muti-walled carbon nanotubes (MWCNTs) as matrix, and norfloxacin (NOR) as template molecular. The structural characteristics of molecular imprinted polymer Co-MOF/CNT@MIP were confirmed by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). The adsorption and selective recognition performances of Co-MOF/CNT@MIP for NOR were also investigated. The adsorption of Co-MOF/CNT@MIP for NOR reaches equilibrium at 300 min, and pseudo-second-order (PSO) model is more fit for adsorption kinetic. The adsorption capacity of Co-MOF/CNT@MIP for NOR reaches 78.6 mg/g with 1.5 mg/mL at 25℃ via the hydrogen bond interaction and “lock-key” imprinted cavities, and the D-R model is fit for adsorption isotherm. The adsorption amount decreases as increasing the temperature, which is an exothermic and spontaneous process. The imprinted polymer exhibits an excellent imprinted factor of 2.08 and high selective factor above 1.93, and it is satisfactory reusability for five cycles.
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OPTICAL MATERIALS
·
2020
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IF 2.779
Hua Yu,Fengping Ruan,Leifeng Chen,Degang Deng
Ca 9 Zn 1.5 (PO 4 ) 7 : Eu 2+ /Eu 3+ phosphors had been synthesized via conventional high temperature solid-state reaction. Based on the different thermal quenching characteristics between 4f-5d transition of Eu 2+ ions and 4f-4f transition of Eu 3+ ions, the fluorescence intensity ratio (FIR) of Eu 3+ to Eu 2+ exhibits temperature dependence at the temperature from 293 to 473 K. The maximum absolute and relative temperature sensitivity of Ca 9 Zn 1.5 (PO 4 ) 7 : Eu phosphor can reach up to 0.0034 K −1 and 1.4% K −1 at 453 K, respectively, when used as thermometric material. These results indicated that our study opens up an effective approach for developing other high-performance self-calibrated optical thermometers.
研究领域:
材料科学
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光学传感器
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发光材料
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测温技术
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高影响因子
ACS Applied Materials & Interfaces
·
2019
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IF 8.456
Zheng Ma,Jingdan Lei,De Zhang,Chao Wang,Jianli Wang,Zhenxiang Cheng,Yuanxu Wang
SnTe has attracted more and more attention due to the similar band and crystal structure with high performance thermoelectric materials PbTe. Here, we introduced Pd into SnTe and the valence band convergence was confirmed by first-principles calculation. In the experimental process, we found that Pd-doped SnTe exhibit a reduced thermal conductivity because of softening chemical bonds and grain refining effects. To further improve the thermoelectric performance, Pd–In codoped SnTe samples were prepared, and the abnormal change of thermal conductivity was observed. The results of synchrotron powder diffraction suggest that the local phase transition (local structural distortions) near 400 K results in the first turn on thermal conductivity. Similarly, the second local phase transition in near 600 K observed by neutron powder diffraction lead to a decrease thermal conductivity of the sample. Finally, a peak thermoelectric figure of merit (ZT) ≈ 1.51 has been obtained in Sn0.98Pd0.025In0.025Te at 800 K.
研究领域:
材料科学
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热电学
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固态物理
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晶体学
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2023
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IF 10.9
Shaoyang Shen,Wenfang Liao,Zhijie Cao,Jiangwen Liu,Hui Wang,Liuzhang Ouyang
MgH 2 , as one of the typical solid-state hydrogen storage materials, has attracted extensive attention. However, the slow kinetics and poor cycle stability limit its application. In this work, LiBH 4 and YNi 5 alloy were co-added as additives to MgH 2 via ball milling, thereby realizing an excellent dehydrogenation performance and good cycle stability at 300 °C. The MgH 2 -0.04LiBH 4 -0.01YNi 5 composite can release 7 wt.% of hydrogen in around 10 min at 300 °C and still have a reversible hydrogen storage capacity of 6.42 wt.% after 110 cycles, with a capacity retention rate as high as 90.3 % based on the second dehydrogenation capacity. The FTIR results show that LiBH 4 can reversibly absorb and desorb hydrogen throughout the hydrogen ab/desorption process, which contributes a portion of the reversible hydrogen storage capacity to the MgH 2 -0.04LiBH 4 -0.01YNi 5 composite. Due to the small amount of LiBH 4 and YNi 5 , the dehydrogenation activation energy of MgH 2 did not decrease significantly, nor did the dehydrogenation enthalpy (∆ H ) change. However, the MgNi 3 B 2 and in-situ formed YH 3 during the hydrogen absorption/desorption cycles is not only beneficial to the improvement of the kinetics performance for MgH 2 but also improves its cycle stability. This work provides a straightforward method for developing high reversible hydrogen capacity on Mg-based hydrogen storage materials with moderate kinetic performance.
研究领域:
材料科学
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氢气储存
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能量存储
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固态化学
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 16
·118634
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IF 6.3
Yang Yu,Ruiqi Xu,Xiaoyu Jiang,Dongwei Ji,Qing Du,Long Fu,Hongzhi Cui
The rational design of long-lifetime and low-energy-consumption ceramic membranes is challenging, especially for the sustainable treatment of industrial wastewater to solve environmental pollution issues. In this work, a whisker reinforcement strategy is proposed to fabricate gradient composite ceramic membranes with enhanced interfacial bonding strength. The introduction of a whisker intermediate layer effectively mitigates the cracking and deformation issues caused by mismatched shrinkage between membrane layers during co-sintering. The resulting composite ceramic membrane exhibits an average pore size of 95 nm and a permeance of 1340 L m −2 h −1 bar −1 . The membrane exhibits a rejection rate of 99.6% for carbon particle suspensions and maintains a permeance recovery ratio of 85% after six separation-backwashing cycles. This work provides a promising and cost-effective strategy for the design of highly stable composite ceramic membranes, paving the way for their practical application in industrial wastewater treatment.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Shulei Chen,Tao Jin,Xin Wang,Guan Wang,Yongyi Zhang,Lei Yao,Jing Zhang
Chiral neuromorphic devices, representing an advanced synchronous integration of neuromorphic engineering and chiral optoelectronics, offer a new pathway for intelligent computing and high-dimensional sensing technologies. In this study, a charge-transfer co-crystal helical structure based on pyrene and 1,2,4,5-tetracyanobenzene (TCNB) was prepared via a simple solution process. This structure exhibits chiral emission by virtue of chiral supramolecular assembly, owing to the strong solvent-solute interactions. To enhance the charge storage performance, a heterojunction with phase-separated characteristics was constructed by one-step drop-casting TIPS-pentacene and pyrene–TCNB solutions. The heterojunction effectively modulates the interfacial charge trapping and separation processes, thereby enhancing the chiroptical sensitivity. Under optical pulse stimulation, the device simulated multiple synaptic functions, including paired-pulse facilitation (PPF), pulse-duration-dependent and intensity-dependent plasticity, and biomimetic learning behaviors. This work provides a feasible technological pathway of chiral artificial synapse construct toward photonic neuromorphic computing system developing.
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NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 47
·期 3
·1247-1255
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IF 3.925
Kun-Lang Lu,Xian-Yong Wei,Fa-Zhan Mao,Zhi-Juan Zhu,Zhuang Li,Fan Yin,Jia-Hao Li,Zhi-Min Zong
Nitrogen and sulfur co-doped porous carbon (NSCDPC) was prepared using a one-step method using a purple-leaf plum kernel shell, potassium benzoate, and N,N′-diphenylthiourea (DPTU) as the carbon precursor, the activator and the nitrogen and sulfur source, respectively. The use of potassium benzoate with weak alkalinity and causticity facilitates obtaining abundant microporous structures and heteroatoms. Meanwhile, the dopant N,N′-diphenylthiourea plays a synergic activation role. The optimal layer-stacked NSCDPC750-1 exhibits abundant ultramicropores and defect sites, developed interconnected channels, a large specific surface area, and rich nitrogen and sulfur contents, resulting in excellent electrochemical performance. As expected, NSCDPC750-1 exhibits a high specific capacitance of 338 F g−1 at 0.5 A g−1 in 6 M KOH electrolyte, an outstanding rate performance with 280 F g−1 at 20 A g−1, and remarkable durability with 92.3% retention after 10 000 cycles. In addition, a symmetric supercapacitor assembled with NSCDPC750-1 as the electrode and 6 M KOH as the electrolyte possesses an outstanding specific capacitance of 111 F g−1 at 0.5 A g−1, an excellent rate capability, and a high energy density of 30.22 W h kg−1. The impressive electrochemical performance makes NSCDPC750-1 a promising supercapacitor electrode material.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2022
·Vol. 38
·期 5
·1251-1257
·
IF 2.726
Li Yang,Wang Xian,Liu Jie,Jin Zhao,Liu Changpeng,Ge Junjie,Xing Wei
In this work, the effect of Nafion ionomer content on the structure and catalytic performance of direct CO polymer electrolyte membrane fuel cell(CO-PEMFC) by using Rh-N-C single-atom catalyst as the anode catalyst layers was studied. The ionic plaque and roughness of the anode catalyst layers increase with the increase of Nafion ionomer content. Furthermore, the contact angle measurement results show that the hydrophilicity of the anode catalyst layers also increases with the increase of Nafion ionomer content. However, when the Nafion ionomer content is too low, the binding between microporous layers, catalyst layers and membrane cannot meet the requirement for either electric conductivity or mass transfer. While Nafion ionomer content increased above 30%, the content of water in anode is difficult to control. Therefore, it was found that AN 30(30% Nafion ionomer content of anode) is the best level to effectively extend the three-phase boundary and improve CO-PEMFCs performance.
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Polymers
·
2023
·Vol. 15
·期 2
·356
·
IF 5
Fengfeng Zhao,Hui Quan,Shijun Zhang,Yihui Xu,Zheng Zhou,Guangxin Chen,Qifang Li
Graphene conductive inks have attracted significant attention in recent years due to their high conductivity, corrosion resistance, and environmentally friendly nature. However, the dispersion of graphene in aqueous solution is still challenging. In this work, we synthesized an amphiphilic graft copolymer, polyvinyl alcohol-g-polyaniline (PVA-g-PANI), and studied the graphene dispersion prepared with the graft copolymer by high-speed shear dispersion. The amphiphilic graft copolymer can be used as a stabilizer and adhesive agent in graphene dispersion. Given the steric hindrance of the graft copolymer, the stability of graphene dispersion is improved by decreasing the probability of π–π stacking. PVA-g-PANI has a better stability on graphene dispersion than carboxymethylcellulose sodium (CMC-Na) and a mixture of PVA and PANI. The graft copolymer has only a slight effect on the conductivity of graphene dispersion due to the existence of conductive PANI, which is beneficial for preparing the graphene dispersion with good conductivity and adhesion. Graphene dispersion is well-adapted to screen printing and is very stable with regard to the sheet resistance bending cycle.Keywords:graphene;conductive inks;graft copolymer;aqueous solution
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Baoyu Wang,Mingrui Li,Songdang Zhang,Hongguo Wu,Yuhe Liao,Hu Li
Finite size effect is closely correlated with heterogeneous catalytic activity and selectivity as reducing the metal to a few nanometers, but may suffer from deficient active sites for cascade reactions. Here, a type of dual-size heterogeneous N-doped cobalt catalysts (Co SAs-NPs /NC(n)) with the coexistence of Co single-atoms (Co-SAs) and Co nanoparticles (Co-NPs) were prepared for efficient synthesis of benzimidazoles (up to 91% yield) from 2-nitroanilines and bio-based alcohols via cascade hydrogen transfer-dehydrogenative cyclization. Experimental results and density functional theory calculations suggested that the bio-alcohol dehydrogenation mainly occurs at Co-SAs sites, while Co-NPs sites remarkably facilitate the subsequent reduction of nitro species, indicating the synergistic effect between Co-SAs and Co-NPs in the coupled hydrogen transfer process. The Co SAs-NPs /NC(0.25) catalyst can be recycled and applied to a wide range of substrates (28 examples). This catalytic approach based on the metal size effect opens a new route for the direct upgrading of biomass feedstocks involving multiple reactions.
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