INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2021
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IF 6.953
Lingyuan Chen,Jiali Tang,Xinyue Zhang,Shixing Wang,Zhaogang Ren
A novel benzothiazole modified chitosan ( BCS ) with excellent Au(III) adsorption performance and selectivity was prepared as adsorbents. The structure and morphology of the adsorbents were characterized by FTIR, SEM, XRD and XPS. The adsorption property of the adsorbents for Au(III) were investigated under different reaction time, initial concentration of Au(III), temperature, pH and coexisting ions. The maximum adsorption capacity of BCS for Au(III) was 1072.22 mg/g at 298 K and optimal pH = 4, which was better than that of other adsorbents reported in literature. The adsorption kinetics and isotherm models fit the pseudo-second-order and Langmuir equations. This shows that the adsorption process of Au(III) is a monolayer chemical adsorption. The adsorption process can proceed spontaneously and belong to the endothermic reaction according to the thermodynamic results. The excellent adsorption performance is mainly attributed to the ion exchange and chelation of the nitrogen, sulfur and oxygen groups on the adsorbent with gold ions. Significantly, BCS has excellent selectivity toward Au(III) and remarkable recycle performance. With the high adsorption capacity, excellent selectivity and outstanding reusability, the BCS adsorbent could be a promising candidate to adsorb Au(III) from wastewater.
研究领域:
材料科学
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环境化学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Biomass Conversion and Biorefinery
·
2022
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IF 4.05
Xiao Yaoxin,Zhang Jun,Zhu Lingjun,Shan Rui,Yuan Haoran,Chen Yong
A series of inexpensive electroplating sludge-derived magnetic copper-containing catalysts were developed for the selective hydrogenation of biomass-based furfural (FFR) into furfuryl alcohol (FA) and 2-methylfuran (MF). The specific structural characteristics of as-prepared magnetic copper-containing samples were clearly identified through various techniques, including XRD, XPS, N 2 adsorption–desorption, NH 3 -TPD, SEM and so on. The characterizations revealed that the hydrogen pre-activated magnetic catalysts supplied metallic Cu species, medium acidity and porosity for the catalytic upgrading of FFR in hydrogen atmosphere. As for FFR-to-FA as well as FFR-to-MF transformations, the magnetic copper-containing catalyst with calcination temperature of 800 °C exhibited excellent performance towards the formation of FA and MF, wherein desirable FA yield of 98.5 mol% and MF yield of 71.3 mol% were achieved at reaction temperatures of 160 °C and 240 °C, respectively. The reuse experiments indicated that the recycled catalysts still maintained excellent activity and stability even after four-time recycling. The present study thus highlights a new approach for the resource utilization of electroplating sludge, which also supplies low-cost and efficient catalytic materials for the selective upgrading of various biomass-derived platform molecules.
研究领域:
催化
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化学工程
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环境科学
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材料科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2021
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IF 6.953
Fengjiao Cui,Huidong Li,Chen Chen,Zhixia Wang,Xinxin Liu,Gang Jiang,Tianjia Cheng,Runying Bai,Lei Song
In this study, cattail was researched as a natural cellulose source to extract cellulose. Dewaxing, alkali and bleaching treatments were carried out for the cattail fibers (CFs). The FTIR, SEM and XRD results indicated that hemicellulose and lignin were successfully removed from the CFs, and the content of cattail cellulose increased from 41.66 ± 1.11% to 89.72 ± 1.07%. Subsequently, cellulose aerogel was prepared by the extracted cattail cellulose. The Zeolitic imidazolate framework-8 (ZIF-8) was uniformly loaded onto the surface of cellulose aerogel by the in situ growth, and ZIF-8 Cattail Cellulose Aerogel (ZCCA) was finally prepared. The SEM, FTIR, XRD and TGA results further confirmed the successful preparation of ZCCA. Additionally, the results of the adsorption experiment showed that ZCCA had excellent adsorption performance for enrofloxacin, and the maximum adsorption capacity of enrofloxacin reached 172.09 mg·g −1 while showing good reusability. The adsorption process followed the pseudo-second-order kinetic model and the Langmuir isotherm model. Thermodynamic studies showed that the adsorption of enrofloxacin was a spontaneous endothermic reaction and that the adsorption mechanism involves the interaction of hydrogen bonds , electrostatic and π-π stacking.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·Vol. 35
·期 47
·2505824
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IF 19
Guoyao Pang,Yang Gu,Haoxiang Zhuo,Meng Li,Kuan Wang,Jian Wang,Dongniu Wang,Jiangtao Hu,Biwei Xiao,Weidong Zhuang
The synthesis process of layered oxide cathode materials is pivotal yet underexplored in sodium-ion battery (SIB) research. This study systematically investigates the phase construction mechanisms of O3-structured NaNi 1/3 Mn 1/3 Fe 1/3 O 2 (NMF) through in situ heating XRD, synchrotron-based STXM, and electrochemical analysis, focusing on decomposition, diffusion, phase transformation, and oxidation steps during the synthesis. Three precursors—co-precipitated hydroxides, micrometer-sized metal oxides (MO), and nanometer-sized oxides (sand-milled metal oxides, SMMO)—are compared, alongside sodium sources (Na 2 CO 3 , NaOH, NaHCO 3 ). Hydroxide precursors enabled a direct P3-to-O3 solid-solution transition via homogeneous Na-ion diffusion, yielding uniform structures and superior electrochemical performance (131 mAh g −1 discharge capacity). In contrast, MO precursors exhibited stepwise phase evolution: Mn 2 O 3 initiated P3 formation at 425 °C, Fe 2 O 3 promoted O3 nucleation at 675 °C, and NiO finalized the transition at 800 °C, albeit with residual impurities. Reducing precursor size (SMMO) delayed phase onset temperatures but retained diffusion-controlled pathways. Sodium source decomposition kinetics critically influenced phase transitions: NaOH accelerated O3 formation at lower temperatures, while NaHCO 3 delayed P3-O3 conversion. STXM revealed heterogeneous oxidation states in oxide-derived samples, correlating with sluggish diffusion and inferior cycling stability. This work establishes that precursor uniformity and sodium source selection govern diffusion homogeneity, phase purity, and electrochemical behavior.
研究领域:
材料科学
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电化学
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储能技术
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无机化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Linhai Wang,Kun Jiang,Zhijin Wang,Tao Li,Duo Wang,Yun-Quan Liu
With ammonia playing a more and more vital role in serving as a renewable hydrogen carrier, it is critical to develop economical and efficient electrocatalysts for the ammonia oxidation reaction (AOR) in which hydrogen is released. In this work, a heterostructured electrocatalyst, Ni 3 S 4 @NiCo 2 O 4 /NF, was synthesized using the hydrothermal method for the purpose of improving AOR efficiency. The obtained nano catalyst exhibited an excellent AOR activity (10 mA·cm −2 at 0.58 V vs. Hg/HgO) and stability (37.2 h at 100 mA·cm −2 ). XRD and XPS characterizations indicated that the bulk catalyst remained unchanged yet with surface metallic Ni oxidized. In situ Raman spectroscopy analysis further revealed that the heterostructured catalyst underwent an obvious surface reconstruction process (Ni(OH) 2 → β-NiOOH → γ-NiOOH) which accordingly lowered the potential required for reconstruction and optimized the energy barrier for the AOR. DFT calculations showed that the heterostructured catalyst not only favors the acceleration of the reconstruction process due to electronic interactions, but also reduces the energy barrier in *NHNH 2 generation step, thus enhancing the performance of AOR, which is superior to the other two catalysts. The product gas analysis showed that the developed catalyst maintained an excellent Faraday efficiency of 95% and a continued activity. In summary, this work opened a potential new pathway for the design of heterostructured electrocatalysts for H 2 production through AOR.
研究领域:
材料科学
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电化学
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催化
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能源材料
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表面科学
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2019
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IF 3.218
Houhuang Zhou,Chenhuinan Wei,Ju Fang,Likang Fu,Gang Liu,Qiming Liu
Poly 3,4-ethylenedioxythiophene (PEDOT) membrane and zirconia nanoparticles (ZrO 2 NPs) were directly prepared on ITO electrode successively through simple strategies. The ZrO 2 NPs-chitosan/PEDOT/ITO electrode was employed as a disposal electrochemical sensor for methyl parathion (MP) detection. The structure characteristics，adsorption characteristics and electrochemical features of electrode were characterized by the SEM, XRD, UV–vis spectrometer and electrochemical analysis techniques. Combined with the individual properties of PEDOT (conductivity and electrocatalysis) and ZrO 2 NPs (affinity to MP), the ZrO 2 NPs-chitosan/PEDOT/ITO electrode displayed superior electrochemical performances to MP measurement with a limit of detection of 2.8 ng·ml −1 (S/N = 3) and a linear range of 5–2000 ng·ml −1 . Furthermore, this sensor exhibited acceptable selectivity and reproducibility. The result of this sensor in real sample measure to MP detection also demonstrates precision.
研究领域:
材料科学
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电化学
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环境监测
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
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2021
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IF 3.08
Kun Jiang,Jin Zhang,Yingfei Wan,Zengjian Liu,Jinwei Chen
In order to obtain the advanced photocatalyst with high performance for removing the gaseous formaldehyde, a new strategy with amination of titanium dioxide (TiO 2 ) and combination with reduced graphene oxide (rGO) is proposed in this work. TiO 2 was first aminated into amino-TiO 2 and then combined with rGO by an electrostatic self-assembly process to form the amino-TiO 2 /rGO photocatalysts. The structure and morphology were characterized by XRD , FTIR, and SEM, respectively. Physicochemical properties were measured by EIS, XPS , ESR , PL , and photocurrent measurements. The mechanism of the photocatalytic reaction was studied. Optimal amino-TiO 2 /rGO catalyst exhibits high catalytic activity and recyclability. The reaction rate constant of HCHO over this catalyst is approximately 9.8 × 10 −3 L mol −1 ·min −1 , which is 10.5 times higher than that of the commercial Degussa P25 TiO 2 . The analysis results from XPS and ESR indicates that the high catalytic activity could be mainly attributed to the imine formed by chemisorption of amino and HCHO. The reaction speed of formaldehyde photolysis increases as the concentration of HCHO on the photocatalyst surface increased. In addition, the introduction of graphene enhances carrier separation efficiency so that leads to more reactive radicals such as hydroxyl radicals (·OH) and superoxide radicals (·O 2 − ), leading to improved performance on formaldehyde photolysis. This could provide a useful method for highly efficient formaldehyde photocatalysis .
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
高影响因子
Journal of CO2 Utilization
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2020
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IF 5.993
Guangyong Shi,Wei Xu,Jichao Wang,Ye Yuan,Somboon Chaemchuen,Francis Verpoort
The coordination of pyridylcarboxylate (isonicotinic acid, IN) with copper (II) fabricates a Cu(IN)-MOF. The characteristic properties of the Cu(IN)-MOF are obtained via different analysis techniques such as XRD, SEM, BET, ICP, TG, etc. The advantage of copper(II) coordinated with a bi-functional organic linker (IN), containing a pyridyl and carboxylate group, is demonstrated by the chemical properties of which the Cu(II)-based MOF exhibits excellent catalytic performance for the CO 2 carboxylation of terminal alkynes. No noble-metal, co-catalyst, or additives are required to execute the reaction. The effectiveness of the Cu(IN)-MOF was demonstrated with a variety of substrates (>11). Moreover, the Cu(IN)-MOF, as a heterogeneous catalyst, can be recycled at least 5 times retaining its excellent catalytic performance. Herein, we report the first copper (II) metal-organic framework (Cu(IN)-MOF) applied for the carboxylation of alkynes with CO 2 demonstrating several advantages such as stable catalyst, avoiding the use of an expensive noble-metal, straightforward synthesis.
研究领域:
材料科学
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催化
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化学工程
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无机化学
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产品关联
DOI
高影响因子
Food Packaging and Shelf Life
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2020
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IF 4.244
Chang Liu,Jiao Huang,Xuejing Zheng,Shujie Liu,Kuakua Lu,Keyong Tang,Jie Liu
The present study aimed to develop heat sealable soybean polysaccharide (SSPS)/gelatin blend films intended to be used as edible food packaging materials. The films were fabricated by solution casting method using SSPS/gelatin blends and plasticized by glycerol. The results indicated that the heat sealability, stretchability and resistance to fracture of the films were significantly improved by blending SSPS with gelatin. The incorporation of gelatin into SSPS films also increased the thermal stability but decreased the water solubility, rigidity and water vapor permeability of the films. ATR-FTIR spectra and DSC results indicated strong interactions between SSPS and gelatin. The studies of optical properties, SEM, AFM, and XRD revealed that SSPS and gelatin were compatible to a certain degree in this blend system. Packaging tests confirmed that the blend films have showing potential as edible material in food packaging.
研究领域:
食品科学
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材料科学
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高分子科学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Yanan Cao,Zhao Huang,Lingli Luo,Jiayin Li,Pao Li,Xia Liu
The magnetic molecular imprinting polymers nanoparticles (MMIPs NPs) for the extraction of norfloxacin (NOR) were prepared by self-polymerization of dopamine onto the surface of (3-Aminopropyl)triethoxysilane (APTES)-modified Fe 3 O 4 NPs. The MMIPs NPs were characterized by FT-IR spectroscopy, XRD, VSM and TEM. The characterization results show that the MMIPs NPs possess superparamagnetic characteristic with the saturated magnetization value of 38.6 emu/g, and the average particle size of about 14.3 nm. Furthermore, the adsorption performance of the MMIPs NPs was evaluated by the static, dynamic, selective adsorption and reusability experiments. The adsorption capacity of MMINs NPs for NOR is 14.2 mg/g with an imprinted factor of 2.1. About 82.4–102.4% of the added NOR (20, 40, 60 μg/mL) were recovered from fortified milk samples with MMIPs NPs as sorbent. Moreover, the MMIPs NPs can be reused for at least six times.
研究领域:
分析化学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2017
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IF 4.217
Long Lv,Nan Chen,Chuanping Feng,Yu Gao,Miao Li
In this study, Xanthate-modified magnetic chitosan/poly (vinyl alcohol) particles (XMMCP) were synthesized by momentary gelation method and characterized to evaluate its properties. The results of FTIR and XRD analysis indicated that most of basic characteristic peaks were weakened in the spectrum of XMMCP compared with the spectrum of pure chitosan, PVA, and Fe 3 O 4 and the diffraction intensity decreased owing to a decline in crystallinity, respectively. The BET surface area, total pore volume and magnetization saturation value of XMMCP were 15.52 m 2 /g, 0.048 cm 3 /g and 34.8 emu/g, respectively, which ensured enough contact of material surface with the metal ions present for adsorption. Based on SEM images, rough and uneven surface of adsorbent was benefited to adsorption performance of Pb(II). Furthermore, the resulting adsorbent showed stability below 150 °C and good magnetic properties. The resulting material was stable in deionized water, acidic, and basic media in 10 days. Continuous adsorption–desorption cyclic results demonstrated that XMMCP could effectively adsorb Pb 2+ and Pb 2+ -loaded XMMCP could be effectively regenerated by HCl solution. Meanwhile, regenerated composite particles could be employed for repeated use without significant capacity loss. Therefore, XMMCP can be a promising material to treat water with Pb 2+ .
研究领域:
环境科学
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材料科学
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化学工程
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水处理
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2013
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IF 2.39
Xiong Song,Qiang Ru,Beibei Zhang,Shejun Hu,Bonan An
A novel flake-by-flake ZnCo 2 O 4 (ZCO) with porous nanostructure is prepared by a typical and facile co-precipitation method using oxalic acid as complex agent. XRD, SEM, and TEM analyses show the as-prepared ZCO nanoparticles have a high purity and a good crystallinity, and the ZCO nanoflakes with a thickness of 30–80 nm are composed of uniform ZCO nanocrystals with a diameter of 20–40 nm. The novel structure with enough free space is beneficial to improving the electrochemical performance. The as-prepared ZCO used as an anode material for lithium-ion batteries exhibits a high specific capacity of 1275 mA h/g at a current rate of 100 mA/g after 50 cycles, as well as a high power capability at elevated current rates, i.e., 1130 and 730 mA h/g at current rates of 500 and 3000 mA/g, respectively. It has a great prospect for the application of anode materials for lithium-ion batteries.
研究领域:
材料科学
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电化学
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纳米技术
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）