ACS Applied Polymer Materials
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2025
·
IF 4.7
Wenjun Lu,Baiwang Sun
Trifluoroacetic acid (TFA) is a ubiquitous and persistent environmental pollutant with significant environmental and human health impacts. To the best of our knowledge, no study has reported the use of porous organic polymers to adsorb TFA vapor. In this study, we successfully synthesized a polymer (POPSP-4) that exhibits both physical and chemical adsorption for efficient TFA capture, and physical adsorption can occur at the sulfur sites. With the assistance of organic bases, the adsorption capacity of the polymer increases from 2.3 g·g–1 to over 4 g·g–1 in 1 h and effectively prevents the escape of TFA from the polymer. This study presents a promising methodology for the design and synthesis of porous organic materials, specifically for the efficient capture of TFA vapor.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Miao Li,Chenxu Guo,Xingzhong Yuan,Zhiyan Feng,Chencheng Qin,Aoqiang Shu,Edison Huixiang Ang,Yan Wu,Hou Wang
A novel Fe-N 2 O 1 S 1 single-atom catalyst (Fe SA -NS-Ti 3 C 2 T x ) was developed for dual activation of ultra-low concentration peroxymonosulfate (PMS) and dissolved oxygen in wastewater treatment. The catalyst was synthesized via a multivariate heteroatom doping strategy using transition metal salt solution and thiourea on Ti 3 C 2 T x . Under 0.1 mM PMS, the Fe SA -NS-Ti 3 C 2 T x achieved 100 % acetaminophen (20 μM) removal within 6 min, with a K c mp of 889.77 min −1 g −2 L 2 and a turnover frequency over two orders of magnitude higher than homogeneous Fe 2+ /Fe 3+ and iron oxides. Mechanistic analysis and theoretical calculations showed that the asymmetric Fe-N 2 O 1 S 1 site optimizes the generation of ·O 2 − and 1 O 2 , efficiently removing ACE through deacetylation and electrophilic attack on the benzene ring. In the long-term tests, the iron leaching of the high-density catalytic bed is negligible, ensuring environmental safety. This study highlights a cost-effective and scalable strategy to advance PMS-based advanced oxidation technologies in wastewater treatment.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Peng Juan,Junmei Liang,Tao Chen,Qicheng Zhang,Wenchao Peng,Yang Li,Fengbao Zhang,Xiaobin Fan
MoS2 and its derivates have been regarded as a promising catalyst for the hydrogen evolution reaction (HER), and their edge sulfur sites are key factors for the HER performance. Here, we develop a facile strategy to grow nonstoichiometric molybdenum sulfide (MoSx) with more active sulfur sites on porous N-doped graphene (MoSx@CN). Experiments demonstrate that the introduction of porous N-doped graphene not only facilitates the fast transfer of charge and the efficient infiltration of the electrolyte but the N dopants could be used as the nucleation sites for MoSx to possess more active bridging S22– sites. Consequently, the obtained MoSx@CN catalyst possesses an outstanding HER activity, which shows an overpotential of 256 mV at 100 mA cm–2 with a Tafel slope of 49 mV dec–1. This study provides a new strategy to optimize transition metal dichalcogenide-based catalysts for energy-related applications.
研究领域:
材料科学
·
能源催化
✓ 已验证
DOI
高影响因子
ACS Nano
·
2019
·
IF 13.903
Qingping Wu,Xuejun Zhou,Jun Xu,Fahai Cao,Chilin Li
How to simultaneously restrain the loss of active species and facilitate the conversion reaction under high S loading condition is the key to solve the commercialization of Li–S batteries. For this system, the availability of raw materials and simplicity (high efficiency) of synthetic strategies are also important factors. Herein, we propose an interlaced two-dimensional (2D) carbon material as advanced Li–S cathode host characterized by corrugated monolithic morphology and Co/N dopants as dual lithiophilic–sulfiphilic sites. This 2D structure is derived from a cheap biomass precursor, adenine, with bonding interaction with a MgCl2 hydrate template via a facile ionothermal method. It allows a homogeneous spatial distribution of S/Li2S deposits and strong adsorbability and enhanced conversion kinetics for polysulfides. Benefiting from the synergistic effects of corrugated 2D conductive matrix and embedded heteroatom/nanodot catalyst, the resultant sulfur cathode releases a high specific capacity of 1290.4 mA h g–1 at 0.2 C, small capacity fading rate of 0.029% per cycle over 600 cycles at 2 C, superior rate performance up to 20 C, and considerable areal capacity retention of 6.0 mA h cm–2 even under an ultrahigh sulfur loading up to 9.7 mg cm–2.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Dan Yang,Liyun Cao,Jianfeng Huang,Gengsheng Jiao,Donghua Wang,Qianqian Liu,Guodong Li,Chaozheng He,Liangliang Feng
Elaborate and rational design of cost-effective and high-efficiency non-noble metal electrocatalysts for pushing forward the sustainable hydrogen fuel production is of great significance. Herein, a novel VS 4 nanoparticle decorated Ni 3 S 2 nanobelt array in-situ grown on nickel foam (VS 4 /Ni 3 S 2 /NF NBs) was prepared by a self-templated synthesis strategy. Benefitting from the unique nanobelt array structure, abundant highly active bridge S 2 2- sites and strong electronic interaction between VS 4 and Ni 3 S 2 on the heterointerface, the integrated VS 4 /Ni 3 S 2 /NF NBs exhibited excellent electrocatalytic hydrogen evolution activity and robust stability. The density functional theory (DFT) further revealed the reversible conversion catalysis mechanism of bridging S 2 2- sites in VS 4 /Ni 3 S 2 /NF NBs during HER process. Notably, bidentate bridging S S bonds as the predominant catalytically active centers can spontaneously open once H adsorbed its surface, leading to the aggregation of negative charges on S atoms and thus facilitating the generation of H* intermediates, and spontaneously close when H* desorption is going to form H 2 . Our work provides fresh insights for developing potential polysulfides as high-performance hydrogen-evolving electrocatalysts for prospective clean energy production from water splitting.
研究领域:
材料科学
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可再生能源
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 34
·期 7
·2309624
·
IF 19
Qi Jin,LiRong Zhang,MingLi Zhao,Lu Li,XianBo Yu,JunPeng Xiao,Long Kong,XiTian Zhang
Lithium–sulfur batteries (LSBs) currently face challenges including lithium polysulfide shuttling, sluggish sulfur redox kinetics, severe lithium dendrite growth, and volume change. Herein, an advanced dual-functional host is designed by embedding 3D N-doped carbon fibers with abundant 2D V 2 CT x nanosheets (N/CF@V 2 CT x ). The N-doped carbon fibers act as “thread” to connect the V 2 CT x nanosheets and form a unique open 3D macroporous structure. This structure effectively prevents the restacking of the V 2 CT x nanosheets and exposes their lithiophilic and sulfurophilic sites. Consequently, the N/CF@V 2 CT x host effectively suppresses the shuttling of LiPSs and improves the cathodic kinetics. Furthermore, the 3D-ordered porous skeleton integrated with abundant lithophilic sites enables uniform Li deposition and homogeneous Li-ion flux, thereby inhibiting dendrite growth and mitigating volume expansion. The as-assembled LSBs exhibit excellent rate capability (640 mAh g −1 at 15 C) and outstanding cycling stability (0.019% capacity decay per cycle throughout 1200 cycles at 1 C). Moreover, the pouch cell assembled with the N/CF@V 2 CT x host demonstrates a high energy density of 350 Wh kg −1 and good cycling stability. This research presents a promising approach to address the challenges of both the sulfur cathode and the lithium anode comprehensively and effectively in working LSBs.
研究领域:
储能
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材料科学
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电化学
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纳米材料
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电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）