ENERGY & FUELS
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2025
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IF 5.3
Yanmei Zhao,Yafang Zhao,Jun Zheng,Yueying Lin,Chuanfang Liu,Jiafan Zheng,Chengyu Zhang,Kai Zhang,Zhongrong Shen
Hydrothermal carbonization of sucrose is a conventional method for preparing hard carbon (HC) microsphere precursors; the construction of closed pores plays a crucial role in enhancing the platform capacity of sugar-based HC materials. This work proposes a strategy of a cohydrothermal method with sucrose and organic amine molecules to regulate the content of closed pores. Amine molecules undergo an amine-aldehyde condensation reaction with furfural intermediates during the hydrothermal process of sucrose, participating in the formation of carbon precursors. During the carbonization process, the presence of amine molecules accelerates the pyrolysis of the precursor and alters the microstructure of the HC microsphere precursor. This ultimately leads to the construction of closed pore structures during subsequent carbonization, thereby significantly enhancing the platform capacity. Research finds that different amine molecules affect the sodium ion storage behavior of the HC anode materials. Specifically, aniline-involved sucrose-derived HC (HCBS) and benzylamine-involved sucrose-derived HC (HCBIS) deliver large closed-pore volume of 0.072 m3 g–1 and 0.095 m3 g–1, respectively, much higher than sucrose-derived HC (HCS) of 0.024 m3 g–1. HCBS exhibits a remarkable reversible capacity of 382 mA h g–1 at a current density of 0.020 A g–1. Ex situ Raman tests demonstrate that the plateau capacity of HCBS (277 mA h g–1) results from both sodium ion intercalation and closed pore filling; conversely, the plateau capacity of HCBIS is primarily attributed to closed-pore filling. This work proposes a novel design concept to create abundant closed pores HC from sucrose, contributing to the rational design of the pore structure of sugar-based HC.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Linbo Yang,Yichao Lin,Yayun Zhao,Jiejie Li,Ziqi Tian,Yaqi Wu,Haitao Hu,Hao Wang,Liang Chen
Zeolites are promising materials for CO2 adsorption, yet they still face the challenges of low adsorption capacity and selectivity. Herein, we report a strategy of grafting ethylenediamine to a Co-exchanged Y zeolite to improve the CO2 adsorption capacity of Y zeolite via strong interactions between Co2+ and amine groups. Functionalization of zeolite Y with amines (Co-Y-EN) enables significant improvement in the CO2 adsorption capacity (4.36 mmol/g at 1 bar and 298 K), which is 1.73 times higher than that of pristine Na-Y zeolite. Moreover, Co-Y-EN demonstrates enhanced CO2 selectivity, as confirmed by both single-component gas adsorption experiments and breakthrough tests. The superior selectivity is attributed to the strong affinity between the amine sites and CO2 molecules, as well as the optimized pore sizes for CO2 adsorption. Overall, this study presents a straightforward approach to enhancing the CO2 adsorption performance of zeolite materials.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Greenhouse Gases-Science and Technology
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2025
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IF 2.8
Ziyong Li,Qingdan Huang,Tingyan Wang,Huihong Huang,Haoyong Song
The amino groups and its substituents of organic amine absorbents have an important influence on the CO 2 absorption and desorption performance. In this study, four diamines with the same primary amino group and another different amino groups were selected as absorbents, including 1,3-propanediamine (1,3-PDA), 3-methylaminopropylamine (MAPA), 3-dimethylaminopropylamine (DMAPA), and 3-diethylaminopropylamine (DEAPA). The phase-change absorption system uses a mixture of polyether and H 2 O as the solvent. The CO 2 absorption performance of flue gas was studied with the analysis on absorption and desorption rate, cycle capacity, and desorption ratio. The effect of diamine molecular structures on phase-change CO 2 capture was investigated by nuclear magnetic carbon spectroscopy. The results show that DEAPA exhibits highest absorption capacity of 1.21 mol CO 2 /mol amine and recycling capacity of 1.09 mol CO 2 /mol amine. The absorption rate of primary and secondary diamines in the phase-change system is significantly higher than that of primary and tertiary diamines. The diamine system with tertiary amino groups has significantly faster desorption rate, higher desorption ratio, and cycle capacity than the primary and secondary diamine systems. The intramolecular tertiary amino group is more conducive to promoting the absorption of CO 2 than the intermolecular tertiary amino group, which can increase the absorption rate of CO 2 by the primary amino group and enhance the CO 2 desorption.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
CRYSTAL GROWTH & DESIGN
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2017
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IF 4.055
Bo Zhang,Mei-Ling Feng,Jun Li,Qian-Qian Hu,Xing-Hui Qi,Xiao-Ying Huang
By utilizing different small amine molecules as structure-affecting agents (SAAs) and charge-balancing agents (CBAs), four new M–Sn–Q (M = Zn, Ag; Q = S, Se) compounds with the anionic architectures ranging from a one-dimensional (1D) chain to a three-dimensional (3D) network have been solvothermally synthesized. Compound [(Me)2NH2]2ZnSn3Se8 (1) features an anionic (4,4) layer of [ZnSn3Se8]n2n– and represents a rare [ZnSn3Se10] T2 cluster-based two-dimensional Zn–Sn–Se compound directed by organic amine. Compound [NH4]3AgSn3Se8 (2) contains infinite linear anionic chains of [AgSn3Se8]n3n–. Compound [CH3NH3]2[H3O]Ag5Sn4Se12·C2H5OH (3) exhibits a 3D open-framework structure of [Ag5Sn4Se12]n3n– with intersecting 3D channels. Compound [CH3NH3]6Ag12Sn6S21 (4) features a 3D framework structure with 1D channels filled by [CH3NH3]+ cations. The most fascinating structural feature of compound 4 is that a complex 3D [Ag12S17]n22n– anionic network exists based on the combination of three types of basic building blocks of [AgS2] dumbbells, [AgS3] triangles, and [AgS4] tetrahedra. The thermal stabilities, optical properties of the title compounds 1–4, as well as the theoretical band structure and density of states of compound 4 have been studied. Moreover, compound 3 displayed visible-light-driven photocatalytic activity for the degradation of crystal violet.
研究领域:
材料科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
Tungsten
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2024
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IF 5.6
Chen Hao,Wang Ya-Qin,Zhang Dong-Ting,Zhao Bei,Li Min-Peng,Li Chen-Yang,Xu Tian-Peng,Liu Mao-Cheng
MXenes obtained significant attention in the field of energy storage devices due to their characteristic layered structure, modifiable surface functional groups, large electrochemically active surface, and regulable interlayer spacing. Nonetheless, the self-restacking and sluggish ions diffusion kinetics performance of MXenes during the alkali metal ions insertion/extraction process severely impedes their cycle stability and rate capability. This paper proposes an aniline molecule welding strategy for welding p-phenylenediamine (PPDA) into the interlayers of Ti 2 C through a dehydration condensation reaction. The welded PPDA molecules can contribute pillar effect to the layered structure of Ti 2 C. The pillar effect effectively maintains the structural stability during the sodium ions insertion/extraction process and effectively expands the interlayer spacing of Ti 2 C from 1.16 to 1.38 nm, thereby enhancing ions diffusion kinetics performance and improving the long-term cycle stability. The Ti 2 C-PPDA demonstrates outstanding Na + storage capability, exhibiting a specific capacity of 100.2 mAh·g −1 at a current density of 0.1 A·g −1 over 960 cycles and delivering a remarkable rate capability 81.2 mAh·g −1 at a current density of 5 A·g −1 . The study demonstrates that expanding interlayer spacing is a promising strategy to enhance the Na + storage capacity and improve long-term cycling stability, which provides significant guidance for the design of two-dimensional Na + storage materials with high-rate capability and cycle stability.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
Energy Storage Materials
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2020
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IF 16.28
Yu-Shan Zhang,Bin-Mei Zhang,Yu-Xia Hu,Jun Li,Chun Lu,Ming-Jin Liu,Kuangye Wang,Ling-Bin Kong,Chen-Zi Zhao,Wen-Jun Niu,Wen-Wu Liu,Kun Zhao,Mao-Cheng Liu,Yu-Lun Chueh
Graphite has been commercialized as a material of lithium ions batteries because of its abundant source, low cost and excellent conductivity while the small interlayer spacing of graphite limits its application for Na + insertion/extraction. Herein, an emerging and effective approach—chain-like H 2 N(CH 2 ) x NH 2 locked between graphene oxide (GO) sheets to expand the interlayer spacing of graphene with enhanced stability of layered structure was demonstrated by a dehydration condensation reaction . The as-obtained H 2 N(CH 2 ) x NH 2 , which can link GO (xDM-GO), exhibits a lock-link structure, resulting in expanded interlayer spacing, with which the excellent Na + storage performance with a high specific discharge capacity of 158.1 mAh g −1 at 0.1 A g −1 and outstanding capacity retention of 82.2% at a current density of 1 A g −1 can be achieved. The effects of interlayer spacing on Na + diffusion coefficient and the rate capability were investigated, for which 0.95 nm is the most suitable interlayer spacing for the Na + insertion/extraction. The novel strategy demonstrates an effective way to controllably tune the interlayer spacing with the improved structure stability of GO, resulting in the best Na + insertion/extraction behavior with the excellent Na + storage performance.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2024
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IF 6.3
Deng Long,Hongyu Chen,Weijia Chen,Jingqin Cui,Miao Lu,Xinyi Chen
The adsorption and activation of CO 2 are two essential steps during the photocatalytic reduction of CO 2 . However, CO 2 molecules, being non-polar and linear, are thermodynamically too stable to be activated. In this work, we graft aromatic amine molecules to the surface of two-dimensional MoS x Se y to improve its photocatalytic efficiency. Thus, the photongenerated electrons would swiftly transfer from MoS x Se y to the grafted molecules under the excitation of the visible light, which conducts strong interaction with CO 2 to promote its adsorption. In addition, MoS x Se y with grafted aromatic amine molecules exhibited strong reduction ability to trigger the activation of adsorbed CO 2 , and to facilitate the consequent deoxidization and hydrogenation, significantly improving the final production. The proposed grafting of aromatic amine molecules could be a promising strategy for effectively activating CO 2 photoreduction.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2024
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IF 5.3
Ling Yu,Xiubin Sun,Chao Liu,Lulu Xiao,Dapeng Tan,Guoliang Zhang
Construction of tight acid-resistant nanofiltration membranes (ARNFMs) with high performance is attracting more and more attention due to the high demand for resourceful treatment of acidic wastewater. In this work, we designed and prepared high-performance polyamine composite ARNFMs with low molecular weight cutoff (MWCO) for MgCl2 rejection based on the differences in diffusion rates between low molecular weight amine molecules (LA-molecules) and polyethylenimine (PEI, Mw = 1800 Da). The LA-molecules reacted with cyanuric chloride (CC) before PEI and the formed primary layer hindered the contact between PEI and CC to some extent. As a result, a thinner separation layer of the polyamine composite ARNFM was constructed due to the introduction of LA-molecules, which endowed the membrane with a much higher water permeability (up to 4.1 times) compared with the pristine polyamine ARNFM. Moreover, the effects of the primary layer structure on the polyamine composited performance and structure were further investigated by utilizing the different reactivity of four LA-molecules (piperazine (PIP), m-phenylenediamine (MPD), diethylene triamine (DETA), and PEI (Mw = 600 Da)) with CC. The triamine structure and short molecular chain of DETA helped to form a just right primary layer with appropriate defects and hence assisted the fabrication of a tight polyamine composite ARNFM. The optimized PEI/DETA2:8-CC composite ARNFM exhibited a quite high MgCl2 rejection rate of 99.1% due to the nondefective separation layer, low MWCO (∼144 Da), and the narrow pore size distribution. In addition, all the polyamine composite ARNFMs showed good acid stabilities in 3 wt % HCl for 72 h at a high temperature of 50 °C.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Shuai Zhang,Hongli Liu,Xianggao Li,Shirong Wang
Inorganic perovskite quantum dots (QDs) have emerged as promising materials for light-emitting devices by merits of their high photoluminescence quantum yield (PLQY), narrow full width at half-maximum and tunable emission spectrum. However, fluorescence quenching and trap-mediated nonradiative recombination between hole transport layer (HTL) and QD films are prejudicial to the performance of perovskite-QDs-based light-emitting devices (QLEDs). Here, HTL was modified with diamine molecules (1,4-butanediamine (4-DA), 1,8-octyldiamine (8-DA) and 1,11-aminoundecylamine (11-DA)) through a simple self-assembly method. QD films based on modified poly[ N , N ′-bis(4-butylphenyl)- N , N ′-bis(phenyl)-benzidine] (Poly-TPD) exhibited higher PL intensity and lower fluorescence quenching properties. Meanwhile, diamine molecules do favor to the flatness of Poly-TPD film and contribute to the smoothness of QD films. Moreover, the exciton quenching and the density of defects at the interface between HTL and QD films were effectively reduced. Particularly, QLEDs based on HTL modified with 8-DA was endowed with a maximum luminance of 78634 cd/m 2 , a peak current efficiency of 30.77 cd/A, a maximum external quantum efficiency of 8.90% and T 50 of 16.8 min when the initial brightness is about 1000 cd/m 2 .
研究领域:
材料科学
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光电技术
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2023
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IF 5.2
Zhipeng Wang,Tingting Ma,Junkai Wang,Shaorun Zhu,Mei Zhang,Min Guo
Amine-based molecules are frequently utilized for defect passivation in perovskite films. However, the passivation effect can vary considerably depending on the structural differences of the amine molecules. In this study, we selected small-sized formamidine iodide (FAI), long-chain octylammonium iodide (OAI), and aromatic nicotinic acid (NA) to passivate surface defects in perovskite films. The charge transport in perovskite solar cells (PSCs) was inhibited by the excessively long alkyl chain of OAI but was enhanced by the π-conjugated structure of NA. Consequently, the power conversion efficiency (PCE) of OAI and NA-passivated PSCs decreased by 0.91% and increased by 0.23%, respectively. Interestingly, FAI was found to react preferentially with the PbI 2 at the grain boundary of perovskite films, promoting secondary grain growth and resulting in a 21% increase in grain size. Due to the reduction in grain boundaries and the combined passivation of MA + and I − vacancies, the PCE of FAI-passivated PSCs increased from 18.63% to 19.35% in ambient air and maintained 91% of their initial values after 76 days of storage under conditions of 20 ± 5 °C and <5% RH. This study introduces a promising strategy for selecting an appropriate amine molecule for surface passivation in efficient and stable fully-ambient air processed PSCs.
研究领域:
材料科学
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能源研究
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Qiang Dong,Enlin Wang,Shaoxiao Liu,Wenze Wu,Baowei Su
Organic solvent nanofiltration (OSN) technology has the potential to separate and purify organic solvents in high efficiency. The self-supporting structure and ease scaling-up merit of hollow fiber (HF) type membrane make it an attractive option for OSN application. Nevertheless, low solvent permeance is one of technical limitation in conventional HF OSN membranes due to their excessively dense separation layer and limited free volume. Herein, we propose a straightforward methodology to fabricate HF thin-film composite (TFC) OSN membranes having exceptional solvent permeance and solute rejection. This methodology is conducted through the incorporation of macrocyclic molecules, 1,4,7,10-tetraazacyclododecane (Cyclen), into the aqueous monomer solution of m -Phenylenediamine (MPD) during the interfacial polymerization to modulate the separation layer. In this way, the average pore size of the separation layer could be precisely enlarged and narrowed on a sub-nanometer scale. Consequently, the Cyclen-modulated HF TFC OSN membrane exhibits excellent separation performance, with a pure methanol permeance of 76.7 L m −2 h −1 MPa −1 and a pure ethanol permeance of 26.5 L m −2 h −1 MPa −1 , which is nearly 60 % increase compared with the baseline TFC membrane , while the Rhodamine B (RDB) rejection only shows a neglectable decrease from 99.7 % to 99.6 % at optimal fabrication conditions. Furthermore, the optimal membrane exhibits remarkable solvent resistance , withstanding a 35 d immersion in N, N -dimethylformamide (DMF) at room temperature without a significant decline in RDB rejection. Additionally, the optimal membrane shows higher than 99 % rejection for Rifampicin (823 Da), which is considerable potential for applications in the separation and recovery of pharmaceuticals. In summary, incorporating macrocyclic polyamine Cyclen into the polyamide layer is a viable method for regulating the physical structure and strengthening the performance of HF OSN membrane.
研究领域:
材料科学
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化学工程
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环境科学
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2020
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IF 7.632
Yang Yang,Wencong Liu,Quanbo Huang,Xinsheng Li,Hao Ling,Junli Ren,Runcang Sun,Jianhua Zou,Xiaohui Wang
There is growing interest in the development of “green” electronics fabricated from “natural” materials, which could lead to renewable, sustainable, and potentially inexpensive organic optoelectronics. In this paper, a novel, facile, and full-solution processed approach has been successfully demonstrated to fabricate a highly flexible and conductive paper electrode by electroless deposition with dopamine molecules as an adhesion layer on newly hybrid paper. The novel paper substrate was prepared through a simple hot-press process with commercial paper and polypropylene (PP) film. It has a smooth surface and improved mechanical properties. Importantly, it is flexible and highly resistant to water, which are important for solution processes. The obtained highly conductive paper exhibited a smooth and hydrophobic surface with high reflection. In addition, these conductive papers also showed excellent mechanical flexibility and stability, indicating the strong adhesion between the metal and hybrid paper, which facilitates the roll-to-roll process of the device. As a possible application, this paper electrode can be effectively used as a mechanical support and an electrode in an organic light-emitting diode (OLED), showing potential possibilities in future electronics.
研究领域:
材料科学
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电子工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）