ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Jie Li,Youcai Lu,Shiyu Ma,Zhongjun Li,Qingchao Liu
Li–O 2 battery has attracted wide attention because it can satisfy the need for a new energy storage system with high energy density. However, poor oxygen reduction (ORR)/oxygen evolution (OER) kinetics involving Li 2 O 2 formation/decomposition is a major obstacle to its development. By designing suitable cathode with desired structure and surface electronic states, the formation/morphology of Li 2 O 2 and the reaction kinetics of charge process can be efficiently optimized simultaneously. In this work, a novel sulfur (S) and chlorine (Cl) co-doped porous carbon (CSC) were synthesized by one-step pyrolysis strategy, and the amount of heterogeneous atoms could be flexibly controlled by different calcination temperatures . Experimental combined with theoretical calculations show that the content of C Cl bond plays an important role in the adsorption of intermediate LiO 2 , thus regulating the morphology of Li 2 O 2 and ultimately affecting the release of battery energy. The C S bond mainly acts on the dynamics of the ORR and OER processes, which has an important influence on improving the round-trip efficiency of the battery. Benefiting from the synergistic effect of heteroatoms , the electrochemical performances of the Li–O 2 battery, including round-trip efficiency, discharge capacity and cycling stability are greatly improved.
研究领域:
材料科学
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能源存储与转换
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Junjie Wu,Peng Shen,Xian Qin,Yulu Yang,Chuanchuan Lin,Xuan Li,Wenbo Geng,Pengfei Gao,Lixue Chen,Li Miao,Yang Jiao,Bailong Tao
Bacterial wound infection is a major challenge to human health worldwide. In this study, a composite nanogenerator, CaO 2 @ZIF-67-PLL, was fabricated via a bottom-up approach with chemodynamic therapy (CDT)/hypoxia improvement for rapid therapy of biofilm-infected wounds. Under a pathologically acidic microenvironment, the out layer ZIF-67 can be decomposed to rapidly release Co 2+ and CaO 2 ; Subsequently, the unprotected CaO 2 reacts with H 2 O to produce O 2 and H 2 O 2 . The self-supply of O 2 relieves hypoxia and inflammatory response induced by infections, while the generated H 2 O 2 and poly- l -lysine (PLL) exhibited synergistic strong anti-biofilm capability against Escherichia coli ( E. coli) and Staphylococcus aureus (S. aureus) as assessed by reactive oxygen species (ROS) generation, membrane permeability change, ATP reduction, o -nitrophenyl-β-d-galactopyranoside (ONPG) hydrolysis and intracellular component leakage. Meanwhile, CaO 2 @ZIF-67-PLL exhibited good cytocompatibility and promoted the adhesion, proliferation, and migration of NIH-3T3 cells by enhancing the expression of wound healing-related genes (TGF-β1, VEGF, α-SMA, Col I, Col III, and Wnt-5a). Notably, CaO 2 @ZIF-67-PLL could significantly improve the healing process of S. aureus -infected wounds via suppressed inflammatory responses, enhanced collagen disposition and angiogenesis, and stimulated HIF-1α, CD31, and Wnt-5a/β-Catenin signaling pathways. These results indicated the potential of CaO 2 @ZIF-67-PLL nanogenerator for clinical application in infected wound treatment.
研究领域:
纳米技术
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生物医学工程
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伤口愈合
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感染控制
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Xiaohong Zou,Qian Lu,Cuie Wang,Sixuan She,Kaiming Liao,Ran Ran,Wei Zhou,Liang An,Zongping Shao
Before the practical application of the Li–O 2 battery (LOB), a critical issue regarding large overpotential upon charging (which causes irreversible side reactions and low energy efficiency) should be resolved. The utilization of redox mediators (RMs) which oxidatively decompose insulating discharge product, Li 2 O 2 , is one promising solution to address this issue. However, the soluble RMs can easily diffuse to and react with the Li metal anode (encountering Li dendrites is even worse). Here, a chemical self-assembly strategy is introduced into the fabrication of the iodide-redox-phobic and Li-ion-philic membrane for LOBs, in which the electronegative δ-MnO 2 layer is in-situ grown on commercial polyethylene (PE) membrane (MnO 2 @PE). The electronegative MnO 2 layer can simultaneously repel the shuttle of iodide species and regulate the uniform Li + deposition. Controlling cut-off capacity of 1000 mAh g −1 , iodide-redox-based LOB with MnO 2 @PE demonstrates low overpotentials (∼0.7 V vs. Li + /Li), dendrite-suppressing capability, as well as impressive long-term reversibility over 500 cycles (2000 h), which urges the LOB technology competitive among the next-generation rechargeable power systems.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 8
·4880-4889
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IF 12.732
Wei Wu,Wang Lin,Hongjiang Chen,Keyan Wei,Zhitong Li,Haitao Yang,Mingxian Liu,Huaicheng Xiang,Libo Deng,Lei Yao
The development of high-performance solid-state batteries (SSBs) that integrate high safety with high energy density has long been pursued. However, conventional lithium-containing anode materials are unable to balance these two requirements, thereby necessitating the exploration of lithium-free anodes for SSBs. In the current study, a core–shell lithium-free α-Fe2O3@TiNb2O7 (TNO) nanofiber composite is synthesized and applied as an SSB anode. The confinement effect from the hollow TNO nanotubes on the encapsulated α-Fe2O3 nanoparticles can buffer the volume-change crushing during charging/discharging, leading to robust structural stability. Moreover, the high rate capability of TNO and high capacity of α-Fe2O3 work synergistically to provide superior electrochemical performances. The prepared α-Fe2O3@TNO composite delivers twice the reversible capacity (625 mA h g−1 at 0.1 A g−1) of pristine TNO as well as a remarkably prolonged cycle life (500 cycles with 79.2% capacity retention) and an improved rate performance (305 mA h g−1 at 3 A g−1) compared with those of α-Fe2O3, making this composite the most efficient TNO-based anode material ever reported. By pairing the composite with the high-energy Li[Ni0.8Co0.1Mn0.1]O2 (NCM811) cathode, the SSB full cell exhibits a high energy density of 400 W h kg−1. These results demonstrate the feasibility and great potential of the proposed lithium-free anode material in SSBs for practical applications.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
Catalysts
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2025
·Vol. 15
·期 6
·545
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IF 4
Xiaohong Yao,Jian Zhang,Chao Long
This study explored how pore size engineering in Nb-Mn/MCM-41 catalysts affects plasma-catalytic toluene oxidation. Adjusting the pore diameter (2.49–3.98 nm) modulated metal-support interactions and oxygen dynamics, with pore expansion to 3.73 nm (M3) optimizing the Mn4+/(Mn2++ Mn3+) ratio (XPS: 36.8%), the amount of lattice oxygen species (O2-TPD: 0.222 mmol/g), and crystallite size control (1.5 ± 0.2 nm, TEM). Smaller pores (M1: 2.49 nm) enhanced toluene adsorption but limited active site accessibility, while oversized pores (M4: 3.98 nm) reduced oxygen storage capacity (0.600→0.412 mmol/g). The Nb-Mn/M3 catalyst achieved superior performance with 96.8% toluene conversion, 55.0% CO2selectivity, and 85.4% carbon balance, while minimizing organic byproducts (GC-MS). Mechanistic studies revealed pore-mediated oxygen storage-transport cycles as critical for decoupling adsorption and oxidation steps. This study reveals fundamental mechanisms linking pore architecture to plasma-catalytic synergy in toluene oxidation, offering critical insights for the systematic design of energy-efficient, plasma-catalytic systems targeting industrial VOCs remediation.
研究领域:
催化化学
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环境化学
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材料科学
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等离子体化学
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纳米技术
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表面科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2024
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IF 6.3
Tong Zhou,Guohui Dong,Jiahao Geng,Kai Han,Chenyang Xiao
In this study, a novel Z-scheme + II-type ternary heterojunction nanocomposite was prepared by one-step solvothermal method using g-C 3 N 4 , FeS 2 and Fe 2 O 3 as raw materials. The successful preparation of this ternary heterojunction was confirmed by the structural analysis and the surface morphology study. Compared with g-C 3 N 4 , the ternary photocatalyst showed excellent photocatalytic performance for the degradation of tetracycline (TC). The enhancement of photocatalytic activity is mainly due to the increase of light absorption capacity, effective separation of carrier in space, and increase of electron transfer channels in this Z-Scheme + II-type composite system. The scavenger test and electron spin resonance spectroscopy show that O 2 − is the main oxidizing free radical in the photocatalytic system. Based on liquid chromatograph-mass spectrometer, a possible degradation pathway of TC was proposed. This study opens up a new idea for the design and synthesis of efficient Z-Scheme + II-type photocatalysts for environmental purification.
研究领域:
环境科学
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材料科学
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化学
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光催化
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产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2020
·Vol. 8
·期 11
·2321-2330
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IF 5.344
Lufei Ouyang,Xiaoyu Mu,Junying Wang,Qifeng Li,Yalong Gao,Haile Liu,Si Sun,Qinjuan Ren,Ruijuan Yan,Jingya Wang,Qiang Liu,Yuanming Sun,Changlong Liu,Hua He,Wei Long,Xiao-Dong Zhang
Free radical-induced oxidative damage and nitrosative stress have been identified as key factors in neuroinflammation responses after traumatic brain injury (TBI), with which reactive oxygen and nitrogen species (RONS), especially nitrogen signaling molecules, are strongly associated. Here, we prepared ultrasmall carbon dot (CD) by using a simple and facile method. In vitro assessment experiments show that the antioxidative CD exhibits an ultrahigh target-scavenging effect for nitrogen signaling molecules, especially the highly reactive ˙NO and ONOO−. However, CD can only partially eliminate conventional oxygen radials such as O2˙− and ˙OH, indicating CD has a preference for RNS modulation. Moreover, in vitro cell experiments and in vivo mice experiments reveal that CD can reduce the reactive oxygen species (ROS) level and lipid peroxidation, enhance superoxide dismutase (SOD) activity and GSSG level, and further improve the survival rate of neuron cells and TBI mice. These results declare that antioxidative CD could serve as an effective therapeutic for TBI.
研究领域:
神经科学
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药理学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2021
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IF 5.279
Ze-Rui Sun,Hua-Rong Liu,Di Hu,Mao-Si Fan,Ming-Yue Wang,Meng-Fei An,Yun-Li Zhao,Ze-Min Xiang,Jun Sheng
Hyperuricemia is a metabolic disease caused by impaired uric acid (UA) metabolism. Ellagic acid (EA) is a natural small-molecule polyphenolic compound with known antioxidative and anti-inflammatory properties. Here, we evaluated the regulatory effects of EA on hyperuricemia and explored the underlying mechanisms. We found that EA is an effective xanthine oxidase (XOD) inhibitor (IC50 = 165.6 μmol/L) and superoxide anion scavenger (IC50 = 27.66 μmol/L). EA (5 and 10 μmol/L) treatment significantly and dose-dependently reduced UA levels in L-O2 cells; meanwhile, intraperitoneal EA administration (50 and 100 mg/kg) also significantly reduced serum XOD activity and UA levels in hyperuricemic mice and markedly improved their liver and kidney histopathology. EA treatment significantly reduced the degree of foot edema and inhibited the expression of NLPR3 pathway-related proteins in foot tissue of monosodium urate (MSU)-treated mice. The anti-inflammatory effect was also observed in lipopolysaccharide-stimulated RAW-264.7 cells. Furthermore, EA significantly inhibited the expressions of XOD and NLRP3 pathway-related proteins (TLR4, p-p65, caspase-1, TNF-α, and IL-18) in vitro and in vivo. Our results indicated that EA exerts ameliorative effects in experimental hyperuricemia and foot edema via regulating the NLRP3 signaling pathway and represents a promising therapeutic option for the management of hyperuricemia.
研究领域:
药理学
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代谢疾病
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炎症
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生物化学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Ling Hu,Zhiwen Wang,Yingzhang Shi,Cheng Liu,Yidong Hou,Jinhong Bi,Ling Wu
The defect-rich ultrathin WO 3 nanosheets are successfully prepared as photocatalysts via heating treatment for the pristine WO 3 nanosheets (NS) in vacuum (NSV) and N 2 atmosphere (NSN). The increment of degradation efficiencies of levofloxacin (LVX) over NS (49.9 %)
研究领域:
环境科学
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材料科学
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化学
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产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2020
·Vol. 10
·期 21
·7378-7385
·
IF 5.721
Mengna Ding,Fengyan Shi,Huijuan Zhu,Yuping Yang,Jiahui Zhong,Liulin Luo,Yuning Huo,Hexing Li
A hybrid Cu2O/TiO2 composite loaded on a Cu mesh (Cu2O/TiO2@Cu mesh) was developed via a supercritical solvothermal route. A uniformly distributed Cu2O/TiO2 p–n hetero-junction was stably coated on a Cu mesh, benefiting the visible-light harvesting. In comparison to electrochemistry and visible-light photocatalysis, the photoelectrochemistry process on the photoanode of the Cu2O/TiO2@Cu mesh presented improved bacterial inactivation activity for Acinetobacter baumannii. By means of the main active species of ˙O2− radicals, the photoelectrocatalytic process on the Cu2O/TiO2@Cu mesh also realized complete leakage of K+ ions, much stronger mineralization of the cell membrane and more efficient elimination of the self-recovery function, finally leading to cell death. In comparison, the electrochemistry process only led to the leakage of K+ ions without inactivation of bacteria, and the visible-light photocatalysis process induced partial leakage of K+ ions and cell mineralization after the death of most bacteria.
研究领域:
环境科学
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材料科学
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微生物学
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光电催化
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DOI
高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 9
·1-16
·
IF 2.4
Hu Rui,Wang Haiyin,Luo Jiahui,Song Jianjun,Jia Haiyuan
Peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs) have been proven to be an effective method for the removal of tetracycline in water. In this study, the Co 3 O 4 /molecular sieve catalyst synthesized by the incipient wetness impregnation method was used for PMS activation. The effect of specific surface area on the catalytic performance of Co 3 O 4 /molecular sieve catalyst was investigated and analyzed in detail by characterization techniques. In the Tetracycline hydrochloride (TCH) degradation experiment, the Co 3 O 4 /13X catalyst exhibited the highest specific surface area (490.584 m 2 /g) and provide abundant active sites, enabling 98.0% TCH degradation within 30 min under optimal conditions (1.5 g catalyst, 0.3 mM PMS, pH 8.0, 25℃), with a reaction rate constant (k obs ) of 0.0977 min -1 . In addition, the degradation mechanism of TCH was explored using electron paramagnetic resonance (EPR) spectroscopy and quenching experiments. It was confirmed that free radicals (SO 4 •− , •OH, O 2 •− ) and non-free radical species ( 1 O 2 ) generated during the reaction play a crucial role in the degradation process of TCH. In summary, the Co 3 O 4 /13X catalyst, when activating PMS, exhibits a remarkable synergistic effect on the degradation of TCH, and shows good repeatability and environmental adaptability. This study provides valuable insights into the design and optimization of catalysts for degrading antibiotic pollutants in water treatment processes. Graphical
研究领域:
环境科学
·
催化
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水处理
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化学工程
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污染物降解
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产品关联
DOI
高影响因子
Nano Energy
·
2024
·
IF 16.8
Zuheng Jin,Xiao Zheng,Zhihong Zhu,Chuan Jiang,Sha Wu,Changzheng Hu,Laijun Liu,Liang Fang,Zhenxiang Cheng
Considering advanced oxidation techniques offer new opportunities for microbial degradation and inactivation, in this study, Z-type heterojunctions of Ba 1.4 Sr 3.6 NdNb 7 Ti 3 O 30 -N 2 /g-C 3 N 4 (BN 2 /CN) were successfully prepared using a solid-phase method and explored for their potential applications in tribocatalytic bactericidal inhibition. These results demonstrate that BN 2 /CN exhibits excellent inhibitory and inactivating effects on E. coli under tribocatalytic conditions. The UV–visible spectrum showed a gradual decrease in the survival rate of E. coli with the increase of tribocatalysis time, reaching an inactivation effect of 91% after 1 h, while fluorescence staining also confirmed that E. coli were essentially eliminated, with hardly any surviving bacteria observed under a laser confocal microscope . Hence, this study presents a novel catalytic approach for sterilization. Moreover, inhibition experiments demonstrated that the BN 2 /CN catalyst did not inhibit the growth of E. coli, tribocatalysis played a crucial role in the disinfection and sterilization processes . The inactivation of bacteria by BN 2 /CN catalyst was still above 90% after multiple cycles of sterilization experiments. Finally, we demonstrated that the production of •OH and •O 2 - during tribocatalysis is key to the inactivation of E. coli, thus achieving the desired effect of tribocatalytic sterilization.
研究领域:
催化
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材料科学
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微生物学
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）