Small
·
2023
·
IF 13.3
Yuxin Long,Qiang Li,Zidong Zhang,Qingxi Zeng,Dong Liu,Lanling Zhao,Yao Liu,Yebing Li,Yiming Zhang,Kunqian Ji,Zhaorui Zhou,Xue Han,Jun Wang
Li-O 2 batteries could deliver ultra-high theoretical energy density compared to current Li-ion batteries counterpart. The slow cathode reaction kinetics in Li-O 2 batteries, however, limits their electrocatalytic performance. To this end, MoSe 2 and Ni 0.85 Se nanoflakes were decorated in carbon hollow nanoflowers, which were served as the cathode catalysts for Li-O 2 batteries. The hexagonal Ni 0.85 Se and MoSe 2 show good structural compatibility with the same space group, resulting in a stable heterogeneous structure. The synergistic interaction of the unsaturated atoms and the built-in electric fields on the heterogeneous structure exposes abundant catalytically active sites, accelerating ion and charge transport and imparting superior electrochemical activity, including high specific capacities and stable cycling performance. More importantly, the lattice distances of the Ni 0.85 Se (101) plane and MoSe 2 (100) plane at the heterogeneous interfaces are highly matched to that of Li 2 O 2 (100) plane, facilitating epitaxial growth of Li 2 O 2 , as well as the formation and decomposition of discharge products during the cycles. This strategy of employing nonstoichiometric compounds to build heterojunctions and improve Li-O 2 battery performance is expected to be applied to other energy storage or conversion systems.
研究领域:
材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Weina Yang,Yachao Wang,Yaxiong Wei,Guofeng Zhao,Weixin Huang,Cong Fu
Photocatalytic oxidative coupling of methane (OCM) offers a sustainable pathway for direct conversion of methane into value-added hydrocarbons, yet faces persistent challenges in balancing efficient methane activation with suppression of overoxidation. Here, we present a TiO2-based photocatalyst decorated with highly dispersed Ag–Co dual sites that achieves superior performance in continuous-flow OCM. The optimized AgCo–TiO2 system demonstrates a remarkable C2 hydrocarbon production rate of 1.7 mmol g–1 h–1 with 91% selectivity while maintaining stable operation for over 30 h. In situ spectroscopic analyses indicate that the introduced Co species induce mobile-charge imbalances, driving the directional transfer of photogenerated electrons and effectively suppressing electron–hole recombination. Coupled with Ag serving as a catalytic center, these effects synergistically enhance O2 activation, C–H bond cleavage, and selective C–C coupling, thereby contributing to the superior catalytic performance. This work provides valuable mechanistic insights into the photocatalytic OCM process, highlighting the pivotal role of precisely engineered charge transfer pathways in enabling efficient methane-to-C2 conversion.
研究领域:
光催化
·
材料科学
·
化学工程
·
环境化学
·
能量转换
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Hao Jiang,Mei Yan,Hao Chen,Yutuo Fu,Chongshen Guo
Strong Coulomb force between photogenerated electrons and holes often results in high level exciton pairs during the photocatalytic process, which hinders the formation of reactive oxygen species (ROS) in the photocatalytic reaction, particularly for the photocatalysis under near infrared (NIR) irradiation. Hence, it is crucial to dissociate excitons into free carriers. In this study, we propose a novel amorphous–crystalline heterojunction of a-CeO 2 /SnFe 2 O 4 for the NIR-driven photocatalytic degradation and sterilization. The introduction of disorder–order interface in heterojunction could greatly enhance the built-in electric field, thereby serving for exciton dissociation. Additionally, the presence of oxygen vacant sites in the a-CeO 2 /SnFe 2 O 4 system can effectively modulate the electronic structure of the material, facilitating exciton dissociation in conjunction with the built-in electric field. The DFT simulation proved the positive impact of the disorder–order interface on charge separation, as well as its enhancement on the activation of O 2 and H 2 O molecules. This work provides a theoretical support for the creation of disorder–order interface to promote exciton dissociation and enhance photocatalytic performance.
研究领域:
材料科学
·
光催化
·
表面化学
·
理论化学
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Zhiyu Shao,Jing Sun,Niankun Guo,Feng He,Keke Huang,Fuli Tian,Qin Wang
Designing highly active and low-cost electrocatalysts towards oxygen evolution reaction has ignited much interest in recent years. Thereby, rational design of those catalysts is an urgent topic that must be addressed. Herein, an effective strategy is demonstrated to be beneficial to the formation of hierarchical nitride phosphide hybrid with abundant oxygen vacancies . This hybrid catalyst exhibits an excellent OER catalytic performance, as demonstrated by an ultralow Tafel slope of 41 mV·dec −1 and an overpotential of 290 mV at 10 mA cm −2 in 1.0 M KOH solution, which is superior to those of the pure nitride, phosphide, and the commercial IrO 2 catalysts. The outstanding catalytic performance can be attributed to the specific heterojunction structure, accessible active sites, and abundant oxygen vacancies, which can facilitate the charge transport and the release of the O 2 bubbles. This study not only provides a facile strategy for constructing surface oxygen vacancies onto phosphide/nitride hybrid, but also exhibits an insight into the nature of hierarchical electrocatalyst with multiple active sites.
研究领域:
电化学
·
材料科学
·
催化
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Xu Fu,Wen Yin,Dao Shi,Yifan Yang,Suisui He,Jun Hai,Zhenqing Hou,Zhongxiong Fan,Dekui Zhang
The synergistic nanotheranostics of reactive oxygen species (ROS) augment or phototherapy has been a promising method within synergistic oncotherapy. However, it is still hindered by sophisticated design and fabrication, lack of a multimodal synergistic effect, and hypoxia-associated poor photodynamic therapy (PDT) efficacy. Herein, a kind of porous shuttle-shape platinum (IV) methylene blue (Mb) coordination polymer nanotheranostics-loaded 10-hydroxycamptothecin (CPT) is fabricated to address the abovementioned limitations. Our nanoreactors possess spatiotemporally controlled O2 self-supply, self-sufficient singlet oxygen (1O2), and outstanding photothermal effect. Once they are taken up by tumor cells, nanoreactors as a cascade catalyst can efficiently catalyze degradation of the endogenous hydrogen peroxide (H2O2) into O2 to alleviate tumor hypoxia. The production of O2 can ensure enhanced PDT. Subsequently, under both stimuli of external red light irradiation and internal lysosomal acidity, nanoreactors can achieve the on-demand release of CPT to augment in situ mitochondrial ROS and highly efficient tumor ablation via phototherapy. Moreover, under the guidance of near-infrared (NIR) fluorescent imaging, our nanoreactors exhibit strongly synergistic potency for treatment of hypoxic tumors while reducing damages against normal tissues and organs. Collectively, shuttle-shape platinum-coordinated nanoreactors with augmented ROS capacity and enhanced phototherapy efficiency can be regarded as a novel tumor theranostic agent and further promote the research of synergistic oncotherapy.
研究领域:
纳米技术
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癌症治疗
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生物医学工程
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光疗
·
药学
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121375
·
IF 7.2
Jinchuan Dai,Tingting Shen,Zhe Meng,Zuotai Zhang,Xiao-Ying Lu,Feiyun Sun,Yuanyuan Tang
As the production and consumption of electronic products increasingly rely on ternary lithium-ion batteries, the need for effective recycling and disposal methods for these batteries becomes crucial. This study introduces a novel, efficient co-pyrolysis method for recycling Li(Ni 1/3 Co 1/3 Mn 1/3 )O 2 (NCM) cathode materials from spent ternary lithium-ion batteries. Employing a 1.0:0.35 mass ratio of NCM: polyvinyl chloride (PVC) in an oxygen-free environment, high recovery rates of Li (91.3 %), Ni (93.5 %), Co (93.6 %), and Mn (94.5 %) metals are achieved. The NCM cathode materials begin to decompose at temperatures below 500℃ and are fully reduced and segregated into Ni-Co alloy, MnO, and Li 2 CO 3 at 550℃ in this process. Notably, the decomposition and reduction temperature of 550℃ is significantly lower than those reported in other studies. Moreover, the NCM cathode material, were regenerated from the pyrolysis products through a straightforward high-temperature solid-phase process, and the regenerated NCM demonstrates remarkable electrochemical properties with strong cycling and rate performance. This method significantly contributes to environmental conservation, offering a green solution for recycling ternary battery waste while also addressing the challenge of waste PVC plastics. This dual-faceted approach mitigates environmental burden and resource wastage, marking a stride towards sustainable waste management and circular economy.
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 27
·12146-12152
·
IF 2.7
Henan Zhang,Qi Liu,Alena Novoselova,Valeri Smolenski,Kewei Jiang,Yongde Yan,Milin Zhang,Jun Wang
The reactions of oxygen and samarium ions in molten NaCl–2CsCl eutectic in the temperature range of 823–913 K have been investigated by potentiometric titration in an inert gas atmosphere. The activity of oxygen ions in the studied melts was monitored using a standard YZME (indicator) electrode based on Y2O3-stabilized ZrO2 with a solid–electrolyte membrane. The titration of Sm3+ by O2− ions demonstrated the formation of insoluble SmOCl compounds in the investigated region. The mechanism of formation of SmOCl and Sm2O3 was established by the analysis of potentiometric titration curves. Subsequently, the solubility of SmOCl and Sm2O3 in the melt was calculated using the material balance equation and solubility constant equation. Finally, the basic thermodynamic properties of SmOCl and Sm2O3 in molten NaCl–2CsCl eutectic were calculated, and the properties of samarium in the melt were summarized using the Pourbaix-type (E-pO2−) diagram to determine the kinds of stabilized samarium compounds. Furthermore, the optimal chlorination conditions can be obtained from the E-pO2− diagram of Sm.
研究领域:
化学
·
材料科学
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DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Muhammad Yousaf,Yuzheng Lu,Majid Niaz Akhtar,Ali Sarosh Khawaja,Khalid Mujasam Batoo,Sajjad Hussain,Asma Noor,Muhammad Akbar,Hu Enyi,M.A.K Yousaf Shah,Naveed Mushtaq,Bin Zhu
Lattice defects in rare earth (RE) doped single-phase semiconductor materials play a key role in structural modifications and physicochemical characteristics, resulting to enhance the ionic conductivity. In this work, we synthesized lanthanum doped samarium oxide with different mole ratios and applied it as a ceramics membrane fuel cell device to enable high peak power density (PPD) at low operational temperatures (520–400 °C). The samples are capable of triple charge H + /O 2− /e − conduction and enhance the catalytic function of the cell in terms of HOR and ORR kinetics by producing lattice defects. The fabricated Sm 1.5 La 1.5 Fe 5 O 12 (2-SLFO) fuel cell device exhibits a high OCV of 1.13 V with a maximum PPD of 864.26 mW/cm 2 at 520 °C. Durability measurement verifies that 2-SLFO-based fuel cell device can be worked for 60 h under fuel cell conditions (H 2 /air) at 520 °C. The first principle calculations using density functional theory (DFT) demonstrate that the higher oxygen vacancy concentration in the 2-SLFO sample may cause to the higher charge-transfer kinetics, subsequent in the enhancement of ions transportation of the fabricated fuel cell device.
研究领域:
材料科学
·
电化学
·
能源材料
·
固态离子学
·
燃料电池技术
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2024
·
IF 4.7
Chenyang Zhao,Yujia Liu,Yupeng Tian,Yahui Li,Junjie Feng,Wei Xu,Ning Shi,Zhe Yang,Bing Sun
Direct epoxidation of propylene (C 3 H 6 ) with hydrogen (H 2 ) and oxygen (O 2 ) over Au/TS-1 catalyst was promising way for the synthesis of propylene oxide (PO). However, high selectivity of PO (>95 %) and conversion of C 3 H 6 (>5 %) cannot be achieved at the same time. The industrialization process was severely restricted. In this paper, Au/TS-1 catalysts were synthesized by deposition precipitation method with alkali metal promoter. And alkaline gases and silane coupling post-treatment were performed to promote the catalytic activity. The prepared samples exhibited a much better C 3 H 6 conversion (6.5 %) and PO selectivity (95.1 %) compared with general catalyst using normal synthetic technology. Cs 2 CO 3 was beneficial to increasing Au nanoparticles uptake efficiency. Both NH 3 and triethoxyvinylsilane post-treatment were good for smaller and more uniform loading of Au nanoparticles. The decreasing in surface hydroxyl density effectively alleviated the occurrence of PO ring opening isomerization. The increased hydrophobicity of TS-1 surface was conducive to the rapid desorption of generated PO and significantly increased PO selectivity. Multiple pretreatment was also favorable for extending the lifetime of Au/TS-1 catalyst.
研究领域:
催化化学
·
材料科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Lidan Xie,Wenyi Huang,Guoqiang Jiang,Yi Liu,Mude Zhu,Yi Tang,Xueqin Chen,Xiaoyun Fan
The wide occurrence of metronidazole (MNZ) in aquatic environment has aroused increasing concern to the potential adverse effects on human health. Combining different motifs into a photolytic material to achieve high photocatalytic efficiency is regarded as one of the main strategies during photocatalytic process. Herein, a triple anions contained photocatalyst , Ba 3 (BO 3 )(CO 3 )F (BBCF), exhibited excellent removal efficiency of MNZ (92.6%) in 15 min, which was 5.87 times higher than that of commercial P25. The excellent removal efficiency could be attributed to the strong electronegativity of the F − , and the π-conjugated triangles structure of (BO 3 ) 3− and (CO 3 ) 2− , which made BBCF facilitate the transport of photogenerated electrons, thus accelerating the accumulation of active h + . Meanwhile, the appropriate reduction potential of BBCF accounted for the outstanding productivity of O 2 – . h + and O 2 – were proved as the dominant reactive species for MNZ degradation. The degradation products were analyzed by LC-TOF-MS, and the toxicity of the intermediate was evaluated to be lower than that of parent MNZ molecule. Moreover, BBCF showed the universal application of degrading oxytetracycline (OTC), methylene blue (MB). Therefore, anion-rich BBCF catalyst with high catalytic activity has a potential application prospect for degrading harmful pollutants in practical water environment.
研究领域:
环境科学
·
材料科学
·
化学工程
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DOI
高影响因子
Advanced Science
·
2026
·
IF 14.1
Zesheng Chen,Yanchao Yu,Xingyuan Xiao,Wenwen Cheng,Ye Yang,Zhengyao Zhang,Wang Wang,Zhijun Zhou,Weikang Hu,Xiaolong Wang,Bing Li,Kwang Leong Choy,Yun Chen,Zijian Wang
Impaired wound healing in diabetes is closely associated with cellular ferroptosis. Microneedle-assisted gas therapy exerts molecular regulation of ferroptosis, representing a promising approach for accelerating diabetic wound healing. To date, O 2 and H 2 gas therapies have consistently been conducted independently and have never been integrated into a single system. Whether and how their synergy might be realized remains a defining challenge. Herein, we propose a concept of integrated O 2 and H 2 gas therapy, demonstrated by fabricating a gas-producing microneedle material. Platinum@MIL-101(Fe)-NH 2 @phosphotungstic acid (PMP) nanoparticles are synthesized as a visible light-driven photocatalyst for H 2 and O 2 co-evolution. The rational design of a spatially separated structure boosts their photocatalytic efficiency under physiological conditions. PMP nanoparticles are further incorporated with bilayer gelatin methacryloyl (GelMA)/PMP composite microneedles (denoted as GPM microneedles). The obtained GPM microneedles enable transdermal delivery of PMP nanoparticles for integrated O 2 and H 2 gas therapy, and demonstrate desirable biocompatibility and pro-regenerative effects. The mechanism of integrated O 2 and H 2 gas therapy has been identified as a TNFAIP3/hnRNPA1 ubiquitination/ferroptosis signaling axis, establishing for the first time a direct link to ferroptosis. In conclusion, this study yields a transformative concept and a ferroptosis-targeting microneedle material with well-defined molecular mechanism for diabetic wound management.
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产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2025
·
IF 10.5
Xiaobo Zhang,Xiuwen Wang,Longjiao Zhu,Jinyan Zhu,Qiuyue Zheng,Jingli Yuan,Wentao Xu,Jijuan Cao
Salmonella typhimurium ( S. typhimurium ), as common and highly pathogenic foodborne pathogen, poses a significant risk to public safety worldwide. The development of highly sensitive, rapid and on-site method for S. typhimurium analysis is urgently needed to prevent bacterial infections. Herein, we introduced a CRISPR/Cas12a-driven electrochemiluminescence (ECL) sensor based on luminol/O 2 binary systems for S. typhimurium detection, employing ultrafine Pt nanoclusters-anchored 2D delaminated-MXenes (Pt NCs/D-MXenes) as the co-reactant accelerator. The ultrathin D-MXenes support regulates the size and dispersibility of Pt NCs and facilitates the full exposure of active sites, and synergistic interactions between D-MXenes and Pt NCs improves electrocatalytic properties toward the reduction of O 2 , which promotes the generation of ROS for boosting ECL emission. Using target responsive-regulated CRISPR/Cas12a system, the ECL sensor for S. typhimurium showed a broad concentration range from 10 1 to 10 6 CFU/mL and limit of detection of 6 CFU/mL, with satisfactory recoveries in spiked-actual samples.
研究领域:
生物技术
·
食品安全
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）