ACS Applied Energy Materials
·
2023
·
IF 6.4
Penghao Song,Surong Zheng,Zaka Ullah,Zairui Yang,Penghao Zhu,Aihua He,Cunguo Wang,Qi Li
The shuttle effect of lithium polysulfides on a positive electrode and the uncontrollable growth of lithium dendrites on a negative electrode are the two fundamental crucial problems of lithium–sulfur batteries (LSBs). These problems have led to low actual specific capacity and poor rate performance of these batteries. In order to resolve these issues at both electrodes simultaneously, we used Fe and Co bimetallic atoms to dope the three-dimensional dodecahedron material ZIF-8, which is used as a monomer to construct a functional modified separator. Owing to the porous structure, high specific surface area, notable interfacial electron conductivity after carbonization, and the synergistic catalytic effect of Fe and Co bimetallic doping, the FeCoDA-CN@PP separator suppresses the shuttle effect of lithium polysulfides (LiPSs) on the positive electrode and ensures the higher ion/electron rapid diffusion and hence efficient lithium growth during the cycling on the negative electrode. The demonstrated LSBs with the FeCoDA-CN@PP separator deliver a specific discharge capacity of 1404 mAh g–1 at 0.1C. After 500 provided cycles at a rate of 1C, it still offers a specific discharge capacity of 541 mAh g–1 and a stable Coulombic efficiency of >98% with a capacity decay rate of 0.08% per cycle. At a discharge rate of 1 mA cm–2, the symmetrical battery with the FeCoDA-CN@PP separator was still able to maintain a stable voltage distribution and an overpotential of 31 mV after 500 h. The outcomes pave an auspicious approach for the development of LSBs with long-cycle life and higher capacity, which may further promote the industrialization and commercialization of LSBs.
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 7
·1481
·
IF 4.6
Wenhui Zhou,Boxu Dong,Ziqi Si,Yushuai Xu,Xinhua He,Ziyi Zhan,Yaru Zhang,Chaoyu Song,Zhuoqian Lv,Jiantao Zai,Xuefeng Qian
Sulfur hexafluoride (SF6), the strongest greenhouse gas, has great challenges in degradation because of its stable structure, posing significant environmental concerns. Photocatalysis offers an environmentally friendly, low-energy solution, but the fluoride deposition on catalysts reduces their activity, thus limiting their large-scale application. To prevent catalyst fluoride poisoning, we report a thin-layer graphitic carbon nitride (CN) material loaded with MoOx(CNM) that resists fluoride deposition for long-term SF6degradation. By combining molecular structure design and nanostructure regulation, we construct a photocatalyst with enhanced charge carrier mobility and reduced transport distances. We find that the CNM exhibits a high specific surface area, increased contact between reactants and active sites, and efficient electron–hole separation due to the Mo-N bonds, achieving an SF6degradation efficiency of 1.73 mmol/g after one day due to the prolonged catalytic durability of the catalyst, which is eight times higher than pristine g-C3N4(0.21 mmol/g). We demonstrate the potential of CNMs for low-energy, high-efficiency SF6degradation, offering a new approach to mitigate the environmental impact of this potent greenhouse gas. We envision that this study will inspire further research into advanced photocatalytic materials for environmental remediation, contributing to global efforts in combating climate change.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Energy
·
2018
·
IF 0
De Gao,Rui Du,Chenggang Zhou,Bo Han,Kaisheng Xia,Qiang Gao,Jinping Wu
Transition metal cyanides are considered as a promising cathode candidate of sodium-ion batteries. Herein, we reported a direct implementation of commercial K 3 Fe(CN) 6 (KFC) as active cathode material of SIBs by a simple recrystallization method. Our results suggest that by integrating conductive carbons (SuperP, abbreviated as SP) and multi-walled carbon nanotubes (CNTs) with KFC, an efficient conducting network could be well established for the utilization of KFC active components, thereby endows excellent cyclic and rate performances. Specifically, the KFC/SP/CNTs composite delivers its theoretical capacity of 81 mAh g −1 at 0.1C, and a reversible capacity of 75.6 mAh g −1 at 1C which maintains 62.6 mAh g −1 after 500 cycles. At ultrahigh rate of 12C, the capacity retention can reach 68% of initial. Our effort suggests that direct implementing industrial KFC as cathode materials for SIBs is highly feasible, which may provide a low-cost cathode candidate of sodium-ion batteries for large-scale energy storage.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
SEPARATION AND PURIFICATION TECHNOLOGY
·
2017
·
IF 3.359
Lang Yang,Feifei Jia,Shaoxian Song
The recovery of gold cyanide complex Au(CN) 2 − from gold cyanidation with graphene oxide (GO) and GO hydrogel have been studied to explore the possibility of the application of GO or GO hydrogel in gold cyanidation process for extracting gold. The study was performed on the adsorption of artificial Au(CN) 2 − aqueous solution on GO and GO hydrogel. The adsorption results, as well as the SEM-EDS, AFM and XPS, demonstrated that GO was a better adsorbent for the recovery of Au(CN) 2 − from aqueous solution than conventional activated carbon because of its higher adsorption capacity and adsorption rate. It has been also found that the adsorption of Au(CN) 2 − on GO followed the Langmuir isotherm and fitted well with both the pseudo-first-order and pseudo-second-order kinetics models. The recovery of Au(CN) 2 − with GO might be attributed to the interaction between Au(CN) 2 − and oxygenous function groups on GO surface. GO hydrogel exhibited excellent Au(CN) 2 − adsorption property and easy separation, which enabled it a potential adsorbent in gold cyanidation.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMISTRY LETTERS
·
2015
·Vol. 44
·期 6
·743-745
·
IF 1.23
Guan Dinghui,Han Lu,Wang Lulu,Song He,Chu Wenyi,Sun Zhizhong
The efficient, simple, and environment-friendly route of direct cyanation of picolinamides has been developed with nontoxic K4[Fe(CN)6] as the cyanide source through Pd-catalyzed C–H bond activation. A series of N-(naphthalene-1-yl)picolinamide derivatives were successfully transformed to the corresponding cyanation products. The cyanation mechanism has also been speculated.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Zhixiong Hu,Zhuang Guo,Xinyue Xie,Xinyi Zhang,Zelin Shan,Chaozhong Wang,Mingyue Li,HongLing Zhang
Single active site and insufficient stability of ozone catalysts are the main bottlenecks limiting their catalytic effect. The stabilization of active sites and construction of multiple sites can be achieved by the precise regulation of the heat treatment temperature during material synthesis. In this study, based on a temperature-mediated crystal phase modulation strategy for the potentially efficient ozone catalyst doping component La, La 2 CO 5 -N-C-600 catalysts were successfully prepared, which had excellent performance in catalysing the ozone degradation of N-diethyl-3-methylbenzenemethanamine (DEET), with a degradation efficiency 22.3 times higher than that of La-CN-550. Combining experimental characterization and density-functional theory calculations, this study systematically elucidates the catalytic mechanism of different La morphologies, focusing on revealing the dual functions of the La 2 CO 5 crystalline phase in La 2 CO 5 -N-C-600. On the one hand, the surface-abundant -OH acts as a Lewis acid site that promotes ozone adsorption and electron transfer. on the other hand, the stable and enriched C=O functional group of this crystal phase can catalyse O 3 decomposition. The two act as synergistic active centres to drive the chain decomposition of ozone and efficiently generate reactive oxygen species (•OH and O 2 •− ). In this study, the temperature-mediated crystal phase engineering and precise regulation of surface functional groups provide a novel route for the targeted construction of active sites of ozone catalysts. Moreover, it lays a theoretical foundation for investigating the regulation of catalytic performance and reaction mechanism by controlling the synthesis temperature.
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2019
·
IF 2.938
Ao Hu,Xinhuan Lu,Dongming Cai,Haijun Pan,Run Jing,Qinghua Xia,Dan Zhou,Yongde Xia
N-doped porous carbons incorporating highly-dispersed non-noble metallic cobalt (Co) nanoparticle materials were synthesized by rapid pyrolysis of a zeolitic-type metal-organic framework (ZIF-9) and their structures, morphologies, topologies and relevant physical and chemical properties were fully measured by different characterization technologies. The resulting derived Co/CN materials were further evaluated as catalysts in nitrobenzene hydrogenation. It was found that Co/CN materials showed remarkbly catalytic activity and chemoselectivity for mild hydrogenation of nitrobenzene. Amongst the studied a series of Co/CN-x (pyrolyzed at x °C) materials, sample Co@CN-800 shows the most superior catalytic activity for hydrogenation of nitrobenzene. In particular, the catalytic conversion activity of Co@CN-800 is 100% with aniline being the sole product at 70 °C for 2 h, 27.5 times higher than that of cobalt powder (Co). It is believed that the large pore size, adsorption of nitroarenes substrate with high selectivity and strong interaction of Co nanoparticles with the doped N species can result in the high activity of Co@CN-800. This work therefore offers a cost-effective approach in developing highly efficient catalytic materials towards mild hydrogenation of nitrobenzene.
研究领域:
催化化学
·
材料科学
·
有机合成
·
纳米材料
·
环境化学
✓ 已验证
DOI
高影响因子
ACS Sensors
·
2025
·
IF 9.1
Xinhua Zhao,Xiaxia Xing,Zhenxu Li,Yi Zhang,Zhu Zhang,Tingting Wang,Dachi Yang
In the emerging ammonia (NH3) economy, both olfactory and visual sensing are desired for leakage detection, in which olfactory sensing enables a fast response and wide detection range, while visual sensing ensures high selectivity. However, little is reported on the sensing material as a mediator to synergistically combine the dual-modality NH3 sensing. Here, Co3[Co(CN)6]2 microcubes (Co–CN MCBs) mediators have been developed for olfactory and visual dual-modality NH3 sensing. In olfactory sensing, porous chitosan-decorated Co3O4/Co3[Co(CN)6]2 microcages (CS@Co–O/Co–CN MCGs) have been obtained via [Co(CN)6]3–-governed self-assembly, glycerol-assisted reduction, and Kirkendall effect-driven hollowing. Beneficially, MCGs exhibit a 1 s fast response (500 ppm) and a 0.5–10,000 ppm wide detection range at room temperature. In visual sensing, colorimetric sensing paper (CSP) incorporated with anthocyanin, Co–CN, and poly(vinyl alcohol) has been achieved, which presents 10–320 ppm visual NH3 detection through a pink-to-brown transition. Further, highly selective NH3 sensing has been acquired through machine learning-powered classification of MCGs’ response and CSP’s specific NH3 chromogenic behavior. Notably, combining dual-modality sensing has achieved desired NH3 detection due to the boosted NH3 adsorption on Co–CN MCBs’ active sites and the synergistic effect of their-mediated heterostructures. Practically, our dual-modality sensing device has been integrated to detect NH3 with reliable responses.
研究领域:
材料科学
·
传感器与传感技术
·
环境监测
·
纳米材料
·
气体检测
·
机器学习应用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2023
·
IF 5.2
Hongmei Yang,Menglu Xu,Lili Zhang,Weiwei Fang,E. Liu,Huaxin Zhang
A benzotrizole-based hyper-crosslinked polymer (HCP) was employed to load cobalt and prepare a novel metal-containing nitrogen-doped carbon catalyst for the selective hydrogenation of quinoline . The high porosity, large surface area and nitrogen-containing monomer of HCP made a positive contribution to metal loading. Owing to the excellent thermostability of HCP, the original porous texture of HCP was partially reserved during pyrolysis , which resulted in highly dispersive Co species in the N-doped carbon material. The remaining mesopores in Co@CN catalyst during thermal decomposition provided available diffusion channels for substrates, which facilitated their full contact with catalytic active sites and their effective conversion. The prepared Co@CN catalyst achieved a conversion rate of 100% and a selectivity of 100% in the hydrogenation of quinoline into 1, 2, 3, 4-tetra-hydroquinoline in water at 100 °C under 3 MPa H 2 . The as-synthesized catalyst had good reuse performance, exhibiting >95% conversion rate and >99% selectivity even after 12 cycles. Moreover, the catalyst could also be applied to the selective hydrogenation of a serial of quinoline derivatives. The study provided a useful strategy for constructing metal-doped carbon materials which might be applicable for other metals and other reactions.
研究领域:
催化化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2024
·Vol. 14
·期 10
·6874-6882
·
IF 3.9
Chongrui Xu,Ping Xue,Rui Li,Juan Jia,Linmeng Ma,Peng Li
The demand for H2O2 restricts the wider application of horseradish peroxidase (HRP) in degradation. In this work, a novel photoenzyme synergistic catalytic system was developed for high-efficiency degrading of indole in water by HRP without extra H2O2. The HRP was immobilized on CN-ZIF prepared by the combination of g-C3N4 and ZIF-8 to achieve photo-peroxidase catalyst HRP/Zn-CN-ZIF. Under visible light, photogenerated electrons and H2O2 from HRP/Zn-CN-ZIF participated in the biocatalytic cycle of HRP directly. As a result, the indole at 20 mg L−1 in water was degraded completely in 2 h by the HRP/Zn-CN-ZIF photoenzyme synergistic catalytic system without the addition of H2O2. Furthermore, HRP/Zn-CN-ZIF exhibited superior visible light absorption and charge transfer ability compared to g-C3N4. The results of the mechanism studies suggest that ·OH would play the most significant role from the HRP/Zn-CN-ZIF in indole degradation. This research provides an efficient approach for the removal of indole from water environments.
研究领域:
环境科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 21
·10347-10356
·
IF 3.925
Zegang Qiu,Xiaoxia He,Shaobo Ma,Zhiqin Li,Yu Xiong,Yueling Cao
The selective hydrogenation of oxygen containing functional groups is of great importance for the high value utilization of biomass resources such as lignin. However, it remains a great challenge to design and synthesize non-noble metal catalysts with high efficiency for the hydrogenation of lignin derivatives under mild reaction conditions. Here, a promising non-noble Ni@CN (CN: nitrogen doped carbon) catalyst was fabricated by direct pyrolysis of Ni metal–organic frameworks (Ni–ZIF). Characterization results reveal that the Ni nanoparticles (NPs) are embedded in nitrogen doped carbon, and the size of Ni NPs increases with the rising pyrolysis temperature. The severe aggregation of the particles of the Ni@CN composite occurs when the pyrolysis temperature is higher than 525 °C. The as-prepared Ni@CN catalysts were tested for selective hydrogenation of the aldehyde group of vanillin (lignin monomer molecule) for the purpose of producing vanillyl alcohol. The Ni@CN-425 catalyst obtained at a pyrolysis temperature of 425 °C exhibits the highest catalytic performance for the selective hydrogenation of vanillin to vanillyl alcohol. A vanillin conversion of 99.5% and vanillyl alcohol selectivity of 98.3% are achieved under a low temperature of 80 °C. In addition, Ni@CN-425 presents excellent stability in the hydrogenation reaction of vanillin. This work provides some useful insights into the design of novel non-noble metal catalysts with high efficiency for selective hydrogenation of oxygen containing functional groups in lignin derivatives.
研究领域:
催化化学
·
材料科学
·
生物质转化
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2020
·
IF 3.232
Yasin Orooji,Mahsa Haddad Irani-nezhad,Ramin Hassandoost,Alireza Khataee,Shima Rahim Pouran,Sang Woo Joo
Cerium doped magnetite nanoparticle (CDM) was synthesized via a co-precipitation method and used as the co-reactant of luminol-K 3 Fe(CN) 6 chemiluminescent system. The physical-chemical features of CDM were studied by XPS , XRD, HRTEM , FESEM , VSM, BET, and FTIR analyses. This simple and highly sensitive nanoprobe enabled the determination of minor concentrations of metronidazole (MNZ). Owing to the quenching efficacy of MNZ in the studied chemiluminescence system, a linear range of 3.47 × 10 −6 -9.37 × 10 −5 mol/L was obtained with a limit of detection of 3.91 × 10 −7 mol/L. This biosensor was used for MNZ detection in human serum samples, which was highly efficient. The outcomes of this study give credit to the proposed biosensor to be applied for detection of MNZ in biological samples.
研究领域:
分析化学
·
生物传感
·
药物检测
✓ 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）