SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Lu Guo,Chengbo Kou,Daliang Fang,Liping Yang,Guorui Deng,Lei Zhu,Wen Ji,Zhonglei Zhu,Haojie Li,Kuo Meng,Xinyue Ma,Binling Li,Meng Ding,Hui Ying Yang
Porous graphene-based electrodes possess great potential in membrane capacitive deionization (MCDI) applications due to their high conductivity and specific capacitance. To further enhance their desalination performance, a MCDI system utilizing nanostructured porous graphene doped with trace amounts of Co and N atoms (CoNG) as the cathode, and N-doped graphene (NG) as the anode is proposed. The porous structure and co-doping of N and Co imparts CoNG with numerous active reaction sites and enhances its electrochemical stability. Besides, the combination of CoNG and NG electrode lowers the overall adsorption energy of the MCDI system. Under optimal conditions, a high desalination performance of 69.23 mg g −1 and a desalination rate of 2.307 mg g −1 min −1 have been achieved with an energy consumption of 0.36 Wh g −1 . This study highlights the potential of graphene-based materials in desalination and lays a foundation for further improvements in their desalination performance.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Fangqing Liu,Xiaoyi Lu,Chenglong Shi,Di Wang,Tingting Cui,Zhipeng Sun
Developing high-efficiency non-precious metal-based catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is a major task for Zinc-air batteries (ZABs). Cobalt-based catalysts have been regarded as promising catalysts owing to the multivalence characteristic of the Co element, however, there remains the agglomeration of Co particles during the high-temperature calcination process and the strong adsorption of oxygen intermediates. Herein, the synthesis of Y 2 O 3 -La 2 O 3 co-modified Co nanoparticles embedded within the porous N-doped carbon substrate derived from a metal-organic framework precursor is reported ((Y 1 La 1 )O/Co-NC). Notably, this strategy allows Y 2 O 3 -La 2 O 3 to uniformly distribute around Co nanoparticles and to form intimate Y 2 O 3 -La 2 O 3 /Co interface sites. Benefiting from Y 2 O 3 -La 2 O 3 co-modification, the synergistic effect of the heterostructures, and abundant active sites, the optimized (Y 1 La 1 )O/Co-NC catalysts exhibit a higher half-wave potential (E 1/2 = 0.845 V) than commercial Pt/C (E 1/2 = 0.828 V). In addition, the potential gap between OER and ORR potentials is 0.78 V. As a cathode catalyst for ZABs, (Y 1 La 1 )O/Co-NC achieved a specific capacity of 955.73 mAh g −1 . Theoretical calculations have also revealed that the introduction of Y₂O₃ and La 2 O 3 promotes electron transfer and increases the electron density at Co sites. The interface effect of Y 2 O 3 -La 2 O 3 /Co optimizes the adsorption strength of oxygen intermediates, significantly reduces the reaction energy barrier, and enhances oxygen electrocatalysis. This study offers significant insights into the strategy of employing rare earth metals to boost the performance of cobalt-based catalysts in ZABs.
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NEW JOURNAL OF CHEMISTRY
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2025
·
IF 2.5
Zhile Xiong,Yuewen Chen,Weidong Xie,Jiali Huang,Xiaoli Zhang,Xiya Zhang,Hai Liu
The electrocatalytic reduction of CO2 using renewable electricity offers a sustainable approach for the production of valuable chemicals. However, this process is often hindered by low catalytic activity and poor selectivity. In this study, we have developed a novel electrocatalyst that integrates ZIF-8-regulated ZnO interfaces, undercoordinated surface sites, and mesoporous nanostructures. This design enabled the ZnO/ZIF-8 catalyst to achieve excellent CO2 conversion performance, with a CO2 Faraday efficiency of more than 91% over the potential range of -1.0 V to -1.6 V and a high current density compared to reversible hydrogen electrodes. At the optimal potential of -1.4 V, the CO Faraday efficiency reaches 95.57%, accompanied by a current density of -8.16 mA/cm2. The porous nature and superior CO2 adsorption ability of the ZIF-8 shell layer foster an optimal setting for CO2 conversion while enhancing the exposure of active sites. Additionally, the synergistic coupling of ZnO and ZIF-8 interfaces fine-tunes the electronic structure of the active sites, thereby enhancing CO2RR efficiency.
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Qingfang Jiang,Wujian Zhang,Weijian Ge,Yiping Jin,Wenfeng Han,Ying Li,Haodong Tang
Sintering deactivation of loaded precious metal catalysts is a pressing issue in the field, significantly reducing catalyst activity. Among them, the redispersion of carbon-loaded precious metal catalysts under a high-temperature atmosphere suffers from the problem of carbon carriers being prone to carbonization. In this study, the sintered PdZn/AC catalysts could be redispersed at low temperatures by adding the additive Zn. Combined with TEM, XRD, XPS, and other characterization means, it was found that the main reason for the redispersion of the sintered catalysts was that the Zn additive could form an alloy with Pd, which promoted the formation of high-valent Pd species, which exfoliated into small particles by oxidation in the O 2 –CO atmosphere. In addition, the factors that influenced the process (Zn content, redispersion temperature, treatment time, and number of treatments) were investigated using the controlled variable method. The present work presents a new idea for recycling sintered precious metal catalysts.
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Electronic Materials Letters
·
2025
·
IF 2.6
Zhang Ligang,Xu Xiaoming,Ma Lihong,Wang Haosen
A series of Er 3+ /Eu 2+ -activated SrS/SrZnSO with different Er 3+ /Eu 2+ concentrations were synthesized at 1300℃ for 3 h through high temperature solid-state reaction, and their persistence luminescence and mechanoluminescence properties were studied. Upon 450 nm laser excitation, SrS/SrZnSO:Er 3+ /Eu 2+ emitted orange-red light, which could be observed with the naked eyes. When the laser was removed, it showed long afterglow orange-red luminescence. The brightness and duration of the long afterglow increase with the increase concentration of Er 3+ /Eu 2+ from x:y = 0.5%:1% to 3%:1%. SrS/SrZnSO:Er 3+ /Eu 2+ was confirmed as an excellent persistent luminescence material since it could continuously emit light for nearly 10 min. Moreover, under pressure stimulation SrS/SrZnSO:Er 3+ /Eu 2+ showed a novel type of mechanoluminescence (ML) with the emitting bright green light which linearly depended on the force. Under the same force of friction, the sample SrS/SrZnSO:Er 3+ /Eu 2+ with Er 3+ /Eu 3 = 1%:0% emitted the strongest ML among prepared samples. Furthermore, the mechanism of mechanoluminescence was studied in details. This study can expand the family of ML materials while promoting the applications of mechanoluminescence materials in damage diagnosis, human-machine interfaces, and pressure sensing. Graphical
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2025
·
IF 14.3
Zixuan Wang,Zirui Jia,Junwen Ren,Li Wang,Di Lan,Siyuan Zhang,Xuetao Shi,Xuehua Liu,Zhenguo Gao,Guanglei Wu
The study of delicate nano-topological structures has been a prominent area of research, largely due to the distinctive electromagnetic characteristics of this structure. However, the relationship between topological transformations, material properties, and electromagnetic wave (EMW) absorption performance remains insufficiently understood. In this study, a series of carbon fiber-based Co/MnO nanocomposites is derived from Co/Mn bimetal Prussian blue analogs encapsulated in polymer nanofiber networks by electrospinning. It has been demonstrated that various topological shapes can be modulated by modulating surfactants, thereby changing the degree of graphitization and electrical conductivity. The optimized spherical precursor composite carbon fiber exhibits superior EMW absorption capability with minimum reflection loss (RL min ) of −58.15 dB with a thickness of 2.3 mm. Moreover, ultrabroad effective absorption bandwidth (EAB) as large as 8.96 GHz is obtained. This work offers a significant contribution to the field of topology, while also promoting the development of manganese-based microwave-absorbing materials (MAMs) with enhanced electromagnetic absorption properties.
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JOURNAL OF CONTROLLED RELEASE
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2022
·
IF 11.467
Binbin Jiao,Kunpeng Liu,Haitao Gong,Zhenshan Ding,Xin Xu,Jian Ren,Guan Zhang,Qingsong Yu,Zhihua Gan
Currently, clinical intravesical instillation chemotherapy has been greatly compromised by the toxicological and physiological factors. New formulations that can specifically and efficiently kill bladder cancer cells are in urgent need to overcome the low residence efficiency and dose limiting toxicity of current ones. The combination of mucoadhesive nanocarriers and cancer cell selective prodrugs can to great extent address these limitations. However, the insignificant endogenous stimulus difference between cancer cells and normal cells in most cases and the high local drug concentration make it essential to develop new drugs with broader selectivity-window. Herein, based on the statistically different NQO1 expression between cancerous and normal bladder tissues, the reactive oxygen species (ROS) activatable epirubicin prodrug and highly potent NQO1 substrate, KP372–1, was co-delivered using a GSH-responsive mucoadhesive nanocarrier. After endocytosis, epirubicin could be promptly activated by the NQO1-dependent ROS production caused by KP372–1, thus specifically inhibiting the proliferation of bladder cancer cells. Since KP372–1 is much more potent than some commonly used NQO1 substrates, for example, β-lapachone, the cascade drug activation could occur under much lower drug concentration, thus greatly lowering the toxicity in normal cells and broadening the selectivity-window during intravesical bladder cancer chemotherapy.
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DOI
PubMed
高影响因子
Nanoscale
·
2016
·Vol. 9
·期 4
·1547-1558
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IF 7.76
Qingqing Yang,Lei Wu,Lian Li,Zhou Zhou,Yuan Huang
Co-delivery of multiple agents via nanocarriers is of great interest in cancer therapy, but subcellular delivery to the corresponding site of action remains challenging. Here we report a smart nanovehicle which enables two different site-oriented payloads to reach their targeted organelles based on stimulus-responsive release and nucleus-targeted modification. First, all trans retinoic acid (RA) conjugated camptothecin (RA–CPT) was loaded in a polyhedral oligomericsilsesquioxane (POSS)-based core; docetaxel (DTX) was grafted on N-(2-hydroxypropyl) methacrylamide (HPMA) copolymers. The POSS core grafted with semitelechelic HPMA copolymers then self-assembled into micelles. Once internalized into the cell, the two drugs were unleashed environment-responsively, and nuclear targeted RA remarkably facilitated the nuclear transport of CPT. Compared with single drug-loaded micelles, the dual drug-loaded platform showed superior synergic cytotoxicity, which was further strengthened by the involvement of RA. The ability to induce DNA damage and apoptosis was also enhanced by nucleus-targeted modification. Finally, dual drug-loaded micelles exhibited much better in vivo tumor inhibition (87.1%) and less systemic toxicity than the combination of single drug-loaded systems or the dual drug-loaded micelles without RA. Therefore, our study provides a novel “one platform, two targets” strategy in combinatory anti-cancer therapy.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Qingping Xin,Zhaoqi Qu,Xinghui Zhang,Xingwei Wang,Jiaxin Wu,Dengdi Wu,Wei Huang,Mengke Wang,Ningning Gao,Xiaoli Ding,Yuzhong Zhang
Composite membranes, which consist of a multi-layer membrane structure comprising an ultra-thin dense separation layer and a porous support layer, are used for gas separation. However, issues such as poor adhesion between layers often arise. In this study, a novel reverse-induced diffusion method was employed to achieve the in situ growth of a covalent organic framework COF (TaPa-1) on one side of polyacrylonitrile (PAN) at room temperature, resulting in the formation of a tightly bonded gutter layer. Subsequently, a metal-organic framework MOF (NH 2 -ZIF-8) was secondarily grown in situ on the TaPa-1 membrane to prepare a PAN/COF-MOF composite membrane with stable interlayer bonding. The TaPa-1 layer, with high gas permeability, and the NH 2 -ZIF-8 layer due to sheltering effect, with high gas selectivity, act synergistically to enable efficient gas sieving and rapid transport. When treating simulated flue gas (CO₂/N₂ = 1:4), the gas separation selectivity of the PAN/COF-MOF composite membrane reach 29.9, with a CO₂ permeability of 825 GPU, achieving excellent CO₂ separation performance. In this study, the PAN/COF-MOF composite membrane is constructed using the reverse-induced diffusion method, achieving stable interlayer bonding and synergistic separation, demonstrating excellent CO₂ permeability and selectivity.
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高影响因子
FUEL
·
2025
·
IF 7.5
Xuemeng Yang,Jiadong Wang,Subing Fan,Qingxiang Ma,Xinhua Gao,Jianli Zhang,Tian-Sheng Zhao
The derivatives of primary Fischer-Tropsch synthesis (FTS) products are indispensable to the sustainable FTS run. For the one-pot conversion of FTS-based 1-octene to nonanol, nitrogen-doped cobalt oxides were obtained through hydrothermal synthesis followed by ammonia atmosphere thermal treatment (AATT) at 325 °C with varying treatment time. The AATT significantly affected the phase structure and the surface element valence states of the synthetic samples. The resulting (Co 3 O 4 ) x N showed high catalytic activity toward the reaction of 1-octene with CO + H 2 to nonanol through a successive hydroformylation-hydrogenation process, with conversion of 98 % and selectivity of close to 80 %. The crucial role of the CoO phase and the enhanced adsorption of the reactant molecules by the induced oxygen vacancy (O v ) were discussed based on multiple physicochemical properties characterization and activity evaluation.
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MOLECULES
·
2025
·Vol. 31
·期 1
·
IF 4.6
Mingyu Liu,Bowen Pei,Hongyu Ba,Wei Ni,Huaheng Zhao,Shuang Chen,Jiamin Zhao,Jinsheng Zhao
The oxygen evolution reaction (OER) in water splitting involves complex multi-electron–proton transfer processes and represents the rate-determining step limiting overall electrolysis efficiency. Developing non-noble-metal catalysts with high activity and stability is therefore essential. Herein, a heterogeneous synthesis strategy was employed to in situ construct an iron-rich layered sulfate precursor (Fe0.42Co0.58-SO4/NF) on nickel foam, which underwent deep self-reconstruction in alkaline electrolyte to form nanoflower-like Fe0.42Co0.58OOH/NF. The optimized catalyst maintained its iron-rich composition and hierarchical structure, delivering outstanding OER performance with an overpotential of 220 mV at 10 mA·cm−2, a Tafel slope of 31.9 mV·dec−1, and stability exceeding 12 h at 600 mA·cm−2. Synchrotron analyses revealed dynamic transitions between mono-μ-O and di-μ-O Fe–M (M = Fe, Co) oxygen bridges during reconstruction, which enhanced both structural robustness and active-site density. The Fe-rich environment promoted the formation of Fe3+–O–Fe3+units that synergized with Co4+species to activate the lattice oxygen mechanism (LOM), thereby accelerating OER kinetics. This work elucidates the key role of oxygen-bridge geometry in optimizing catalytic activity and durability, providing valuable insights into the rational design of Fe–Co-based non-noble-metal catalysts with high iron content for efficient water oxidation.
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高影响因子
Small
·
2021
·Vol. 17
·期 19
·2100082
·
IF 13.281
Jiatong Wei,Yanping Chen,Yanfu Ma,Xin Shi,Xiaoli Zhang,Chunjing Shi,Ming Hu,Jian Liu
Fischer-Tropsch synthesis (FTS) is an effective route to produce olefins, gasoline, diesel, and oxygenates from syngas (CO + H 2 ). However, it still remains a challenge for regulating the product distribution of FTS. Here, a series of Co/C sub-microreactors with precise designed nanoarchitectures are synthesized for selective syngas conversion. Through a combination of surface protection-assisted etching and following carbonization process, Co/C sub-microreactors with solid cube, double-shelled hollow box, and hollow box architectures, namely, Co/C-Cube, Co/C-DBox, Co/C-Box can be obtained. In FTS, comparing with solid Co/C-Cube, double-shelled hollow structured Co/C-DBox is inclined to grow long-chain hydrocarbon products, whereas hollow structured Co/C-Box avails the formation of short-chain hydrocarbon chemicals. Therefore, shape selective catalysis and controlled product distribution of FTS are realized by tuning the architectures of Co/C sub-microreactors. It is expected to fundamentally unravel the heterogeneous catalytic process via upfront designing and precisely regulating the architectures of micro/nanoreactors.
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