COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
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IF 4.539
Mengting Wang,Siyu Day,Zhongkui Wu,Xiaodong Wan,Xiaolan Ye,Baotuo Cheng
Metal-organic gels, which have attracted much attention and research due to their novel properties, were usually prepared with organic solution. In this paper, a new metal-organic gel was assembled by mixing proper amount of xanthine and zinc acetate in pure water with the assistance of triethylamine . The results of FTIR and XRD indicated that the hydrogel was self-assembled through coordination, hydrogen bond and π-π stacking. The hydrogel exhibited thixotropic property and good resistance to acid, alkali and heat. The xerogel obtained by freeze-drying had a porous structure with pore size ranging from several nanometers to several hundred nanometers as shown in the SEM images. The xerogel had the effectively adsorption properties for methyl orange in aqueous solution, and the adsorption efficiency is up to 80.63%. The model of adsorption kinetics and adsorptions isotherm show that the adsorption data were consistent with the Freundlich equation and the pseudo-second-order model, which mainly attribute to the chemisorption of methyl orange on multilayer heterogeneous surface of the xerogel . Prepared by a simple and mild method, the xerogel is a promising adsorbent for dye wastewater treatment .
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2023
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IF 10.9
Yunfei Shen,Yi Liu,Kaisheng Sun,Tiantian Gu,Gang Wang,Yue Yang,Jianxiang Pang,Yang Zheng,Xiaodong Yang,Long Chen
Dendrites growth, chemical corrosion, and hydrogen evolution reaction (HER) on zinc anodes are the main barriers for the development of aqueous zinc-ion batteries (AZIBs). Constructing interfacial protective layer is an effective way to alleviate the side reactions on the anodes. Herein, Cu/Ti 3 C 2 Cl 2 MXene (CMX) with high zincophilic and hydrophobic property is prepared by the lewis molten salts etching method, and the CMX interface protection layer is constructed by a simple spin coating. The CMX coating layer can provide abundant nucleation sites and uniformize the charge distribution through the zincophilic Ti 3 C 2 Cl 2 MXene matrix, leading to homogenous Zn deposition. In addition, the hydrophobic coating contained anti-corrosive Cu nanoparticles can prevent the Zn anode from the electrolyte, beneficial for suppressing the chemical corrosion and HER. Therefore, the stable and reversible Zn plating/stripping is achieved for the Zn anode coated by the CMX, which exhibits the lifespan of over 1400 h at 0.5 mA cm −2 , and even can steadily run for 700 h with 65 mV at 10 mA cm −2 . Furthermore, CMX@Zn shows a high coulombic efficiency of over 100% for 3800 cycles, which indicates that the CMX@Zn electrode has excellent stability and reversibility of Zn stripping/plating. The full batteries assembled with ZnCoMnO/C (ZCM) cathodes also exhibits higher capacity (450.6 mAh g −1 at 0.1 A g −1 ) and cycle stability (capacity retention of 70% after 1500 cycles). This work enhanced the lifespan of AZIBs and broaden the research of multifunctional coating layer to other secondary batteries based on metal anodes.
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高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2018
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IF 3.716
Ning Zhang,Chuanhui Huang,Ping Tong,Zunmei Feng,Xiaoping Wu,Lan Zhang
Volatile polycyclic aromatic hydrocarbons (PAHs) in water and soil are associated with status in the human body. Development of simple, efficient detection method is challenging due to the coating could be attacked by the abundance of water in the direct-immersion solid-phase microextraction. The stability of coating is essential to the analysis results. In this paper, a stable Ni-Zn MOF/g-C 3 N 4 (MG NFs) nanoflowers with cavity traps structure was firstly reported and acted as solid-phase microextraction (SPME) adsorbent for PAHs. Markedly enhanced moisture and acid stability of the MG NFs was obtained through the doping the hydrophobic graphitic carbon nitride (g-C 3 N 4 ) and metal ions into metal organic frameworks (MOFs). The aperture environment and ambient environment of MG NFs were changed by the doping of the Ni and the g-C 3 N 4, respectively. The moisture and acid stability of MG NFs were prominently increased under the dual protection. Compared to commonly used commercial coatings, the MG NFs own large surface area, unique nanoflowers structure and numerous open metal sites on the nanosheets, which demonstrated significant extraction superiority for PAHs. The MG NFs coated fiber was used for the SPME preconcentration of PAHs and couped with GC–MS for detecting PAHs. It presented low detection limits (0.1–3.0 ng L −1 ), wide linearity (0.3–5000.0 ng L −1 ) and good linearity (the correlation coefficient >0.9951). The inter-day and intra-day relative standard deviation (RSD) (n = 3) for three replicate extractions using one fiber was 3.8%–9.1%, and 3.5%–9.2%, respectively. The fiber-to-fiber reproducibility (n = 3) was 4.2–11.8%. The coupling method was successfully applied in the analysis of real water and soil samples with satisfactory recoveries of 82.9–109.2%, 84.2–106.4%, and the corresponding RSDs were 2.4–11.3%, 3.6–10.8%, respectively. The results indicated the effectiveness of NG NFs coated fiber in further practical application.
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DOI
高影响因子
Journal of Materials Chemistry A
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2025
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IF 9.5
Mengjie Cao,Shuangde Li,Shikun Wang,Xin Zhou,Guangxin Ma,Yunfa Chen
The catalytic decomposition of CH4 offers a promising route to obtain pure H2, which is significant for mitigating greenhouse gas emissions and enhancing methane utilisation. Nickel-based catalysts are the most prevalent for methane cracking. However, catalyst deactivation can occur due to coking and sintering. Therefore, stabilising the active sites of Ni-based catalysts by enhancing metal–support interactions is essential for designing methane cracking catalytic systems. This study investigates the effects of adding Co, Cu and Zn on the performance of a hydrotalcite-derived NiCrAl catalyst. The results showed that Cu increased the specific surface area, decreased the electron density around Ni atoms, facilitated the reduction of NiO, and produced strong interactions between the metal and support. This improved methane decomposition at the Ni active sites and enhanced catalytic stability. The strong interaction between the metal and support suppressed nickel sintering during methane cracking. The Ni2.4Cu0.3Cr0.3Al catalyst retained 50% H2 yield for 400 min at 650 °C. Online mass spectrometry analysis demonstrated that the catalyst did not generate CO and CO2 during the methane cracking reaction. XRD and TEM results showed that Cu maintained the balance between CH4 dissociation and carbon diffusion by stabilising the size of nickel, promoting the transition of deposited carbon from carbon particles to carbon nanotubes. This work provides a reference for designing high-performance nickel-based catalysts for methane cracking.
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2025
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IF 3.9
Yang Fan,Jiang Chongwen,Zhu Jundong
Biopolymer aerogels have shown broad prospects in efficient thermal management. However, their inherent flammability imposes limitations on practical utilization. In this study, a gelatin-based composite aerogel (Zn-MOF-DA/GA) was successfully prepared by dopamine-modified Zn-MOF nano-reinforcement and multiple crosslinking in gelatin solution. The Zn-MOF-DA component not only facilitated the uniform dispersion of MOF nanoparticles but also enhanced interfacial molecular interactions through multifunctional groups and intrinsic physical properties. The as-prepared aerogel with a hierarchical porous structure, low bulk density, and high mechanical strength exhibits excellent thermal insulation performance (33.02–37.62 mW·m⁻ 1 ·K⁻ 1 ) and anisotropic thermal properties. Moreover, the nano-porous Zn-MOF-DA significantly improved the flame retardancy of composite aerogel, reducing the peak heat release rate and total smoke release by 48% and 96%, respectively, compared to gelatin aerogel. The design strategy of multi-crosslinking and nano-reinforcement provides a broad prospect for sustainable aerogels in the field of thermal management and fire safety. Graphical abstract
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xiaohong Sun,Jinhui Zhang,Xueyan Li,Qinglu Peng,Xuliang Yang,Qingju Liu,Longzhou Zhang
The inherent trade-off between mechanical robustness and ionic transport efficiency in gel electrolytes has posed a long-standing challenge for advancing solid-state zinc-air batteries. Conventional approaches struggle to reconcile micron-scale pores (essential for mechanical reinforcement) with macroporous networks (critical for rapid ion migration). In this study, a novel strategy was employed to introduce micropores onto the skeleton of a macroporous gel. The X-ray tomography reveals this secondary structure for the first time. The zinc-air battery assembled by this gel exhibit the high ion conductivity of 205 mS cm −1 and undertake a stress of 984 Kpa. Additionally, the lifetimes of button cell and flexible Zinc-air battery reach 120 h and 97 h respectively.
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2025
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IF 7.9
Chi Jiang,Chuanyu Miao,ShiBo Bai,Ming Wang,Yingfei Hou
Aqueous zinc ion battery (AZIB) is an important development direction for future energy storage. However, the growth of zinc dendrites in AZIB tends to pierce the membrane during the cycling process, leading to short circuits inside the battery, and the free dendrites reduce the Coulomb efficiency. Herein, we propose a membrane based strategy to alleviate the above problem by easily modifying frequently used glass fiber (GF) membrane through depositing polystyrene sulfonate-zinc complexes. The modified GF membrane (named GF/PSS-ZnCl 2 ) has a reduced pore size and a more uniform pore size distribution, which regulate the uniform diffusion of zinc ions. Under the action of the applied electric field, the uniformly distributed negative sulfonic acid groups guide the zinc ions to be uniformly dispersed on the membrane. The long chains of zinc polystyrene sulfonate attached in the pore size of the membrane establish a fast ion transport channel for the zinc ions, which guides the zinc ions to reach the surface of the electrodes in a uniform and fast manner. The battery with modified membrane maintained up to 1800 h of cycling at a current density of 0.1 mA cm −2 , which is 14 times that of the battery with pristine membrane.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Changpeng Xian,Ruilin He,Qianwei Chen,Qiulin Li,Yandong Ma,Shu-juan Bao,Wei Sun,Hao Chen,Maowen Xu
Aqueous rechargeable zinc-manganese batteries (AZMBs) are strong candidates for the next generation of energy storage technologies. However, poor cycling stability has greatly limited the commercialization process of AZMBs. The irreversible dissolution and low utilization of manganese-based cathodes impact cycling stability. Therefore, this work proposes a cathode for electrolytic zinc-manganese battery, where cobalt and nitrogen co-doped porous carbon with catalytic and adsorptive properties is grown on carbon nanotube films (CoNC-CFs). Through a synergistic approach of ion adsorption and catalytic conversion, it significantly enhances the reversible conversion efficiency of Mn 2+ /MnO 2 , leading to long-term cycling stability for AZMBs. This strategy utilizes the catalytic effect of cobalt to promote the uniform deposition of Mn 2+ during the charging process and ensures the efficient dissolution of the deposited material during discharge, thus achieving over 1300 reversible cycles at 1 mA cm −2 in a near-neutral sulfate electrolyte. This method offers new perspectives for the further development and application of AZMBs.
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产品关联
DOI
高影响因子
FUEL
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2022
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IF 8.035
Runze Jin,Ke Ma,Zhongshun Chen,Zhongqiang Tang,Haobin Hu,Jiaofei Wang,Zhuangzhuang Zhang,Chengyi Dai,Xiaoxun Ma
The selectivity of methanol conversion to aromatics on Zn/ZSM-5 is often limited, mainly because the hydrogen removed during the process combines with low-carbon olefin intermediates to regenerate alkanes and reduce the effective utilization of carbon atoms. Herein, CO 2 is added to the methanol aromatization reaction as a receptor that consumes hydrogen in situ, which reduces the hydrogen transfer reaction and improves the selectivity of aromatics. It is proposed that aromatic selectivity under CO 2 atmosphere is determined by the chemical state of Zn species. Specifically, ZnO converts CO 2 and consumes hydrogen, and ZnOH + promotes methanol aromatization. Under the same conditions, aromatic selectivity of 3ZnZ18-IM under CO 2 atmosphere can reach 85.2 %, which is much higher than that of 71.4 % under N 2 atmosphere. This study provides a new strategy for methanol to aromatics (MTA) reaction, which has a positive impact on solving the energy and environmental problems in the production of aromatics.
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DOI
高影响因子
CARBON
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2018
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IF 7.082
Zhe Wang,Dan Cheng,Chang Chen,Kebin Zhou
Hierarchically porous materials have drawn extensive attention to construct effective air cathodes in newly developed zinc-air batteries. Here, we successfully fabricated hierarchically porous carbon microspheres (HCMs) with fully open and interconnected super-macropores by a strategy of high internal phase W/O/W double emulsions (HIPDEs). The as-prepared HCMs-supported platinum nanoparticles (Pt/HCMs) were employed as novel ORR catalysts for the air cathodes of Zn-air batteries. It was found that Pt/HCMs promised a nearly 100% Pt utilization and showed a higher current density and better durability than the commercial Pt/C on rotating disk electrode (RDE) setup and gas diffusion electrode (GDE)-based half-cell configurations, highlighting the importance of the fully open and interconnected super-macropores for improving the gas/liquid phases transport. Benefiting from the superior mass transfer, the Pt/HCMs-based Zn-air battery delivered high power density (190 mW cm −2 ) and specific capacity (800 mA h g Zn −1 ) comparable to that of the commercial Pt/C-based battery. This study presents a new avenue to engineer catalyst to boost the performance of Zn-air batteries.
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DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
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2017
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IF 2.538
Shuangzhen Guo,Pengpeng Jiao,Zhigang Dan,Ning Duan,Jian Zhang,Guanyi Chen,Wubin Gao
A novel l -arginine modified magnetic bioadsorbent (Fe 3 O 4 -CS-L) was fabricated to remove Zn(II), Cd(II) and Pb(II) from aqueous solution by adsorption method. Several techniques such as FT-IR, SEM, XRD, TGA and VSM were used for characterizing the Fe 3 O 4 -CS-L. The results showed that the Fe 3 O 4 -CS-L was successfully prepared. Batch experiments were conducted to investigate the parameters affecting the adsorption of the novel magnetic bioadsorbent to metal irons, such as adsorption isotherm and adsorption kinetics. The adsorption equilibrium was commendably described by pseudo-second-order model. Langmuir model was better than Freundlich model to describe adsorption isotherm data and the predicted maximum adsorption capacities of Zn(II), Cd(II) and Pb(II) were 256.41 mg/g, 156.99 mg/g and 128.63 mg/g, respectively. Competition adsorption results showed that the adsorption order of Fe 3 O 4 -CS-L to metal ions was Pb(II) > Zn(II) > Cd(II). Moreover, regeneration studies suggested that Fe 3 O 4 -CS-L has a good recyclability. All the results showed that Fe 3 O 4 -CS-L could be a promising material in environment pollution cleanup.
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DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2020
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IF 7.864
Yang Chen,Yadan Du,Puxu Liu,Jiangfeng Yang,Libo Li,Jinping Li
NH3 is the most important gaseous alkaline pollutant, which when accumulated at high concentrations can have a serious impact on animal and human health. More importantly, NH3 emissions will react with acidic pollutant gases to form particulate matter (PM2.5) in the atmosphere, which also poses a huge threat to human activities. The use of adsorbents for NH3 removal from emission sources or air is an urgent issue. However, there are difficulties in the compatibility between high adsorption capacity and recyclability for most conventional adsorbents. In this work, a structural transformation strategy using metal–organic frameworks (MOFs) is proposed for large-scale and recyclable NH3 adsorption. A series of M(BDC) (M = Cu, Zn, Cd) materials can transform into one-dimensional M(BDC)(NH3)2 after NH3 adsorption, resulting in repeatable adsorption capacities of 17.2, 14.1, and 7.4 mmol/g, respectively. These MOFs can be completely regenerated at 250 °C for 80 min with no adsorption capacity loss. Besides, breakthrough and cycle tests indicate that Cu(BDC) and Zn(BDC) show good performance in the removal of low concentrations of NH3 from the air. Overall, combining the advantages of high adsorption capacity and recyclability due to the reversible structural transformation, Cu(BDC) and Zn(BDC) can be employed as ideal adsorbent candidates for NH3 removal.
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DOI
高影响因子
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