INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Songlin Wang,Yu Guo,Qi Liu,Peng Yang,Huabo Li,Lei Liang,Hongying Niu,Qiying Zhang,Yanyan Liu,Jianji Wang
The synthesis of carbonates by using nontoxic feedstocks and ecofriendly heterogeneous catalysts has received great attention but remains a significant challenge. Herein, a series of Mg/Al-codoped porous carbons (MgAl@CM) were developed and applied for transesterification to synthesize methyl phenyl carbonate (MPC). The results showed that MgAl@CM possessed abundant mesopores, large amounts of N/O-containing groups, and dispersed Mg/Al species. And 1Mg5Al@CM-700 exhibited the highest catalytic activity with a diphenyl carbonate conversion of 80.2% and MPC selectivity of 99.6% due to its unique structure and acidic–basic properties, indicating a highly efficient acid–base synergistic catalysis process. Moreover, the catalyst presented good stability and reusability for six recycles without a substantial activity loss. The mechanism based on the synergistic catalysis was investigated. This work provides a novel perspective for the design of heteroatom-doped carbon catalysts to accomplish an efficient MPC synthesis.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Muhammad Junaid Khan,Muhammad Rehan Islam,Farooq Hafeez,Chunyan He,Jun Zhang,Yunlei Xianyu
The proliferation of pathogenic microorganisms is a significant cause of food spoilage, resulting in substantial economic losses and public health risks. To ensure food safety and extend shelf life, packaging must not only maintain product integrity but also prevent contamination by multidrug-resistant (MDR) pathogens such as Escherichia coli ( E. coli ), Listeria monocytogenes ( Listeria ), and Candida albicans ( C. albicans ). In this study, we developed a multifunctional nanocomposite (Mg-MOF-74@CA/CNF) by integrating magnesium-based metal–organic framework (Mg-MOF-74), carvacrol (CA), and chitin nanofibers (CNF). This nanocomposite was subsequently incorporated into a polyvinyl alcohol (PVA) matrix to fabricate the final film (Mg-MOF-74@CA/CNF/PVA). The resulting film demonstrated excellent antimicrobial activity, achieving up to 98 % inhibition of MDR pathogens through reactive oxygen species (ROS) generation and disruption of microbial membranes. In addition, the film exhibited improved thermal stability, enhanced tensile strength, and superior barrier properties against oxygen and water vapor. Application tests on cherry, cauliflower, and chicken confirmed significant reductions in microbial growth and weight loss, alongside prolonged shelf life while maintaining product quality. These findings highlight Mg-MOF-74@CA/CNF/PVA as a sustainable and effective alternative to conventional packaging materials, offering both food preservation and enhanced safety.
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高影响因子
Applied Materials Today
·
2022
·
IF 8.663
Xikang Yang,Anlang Wu,Zhiqiang Deng,Zhihai Wu,Zhenfu Zhao,Ziyang Hu
Perovskite quantum dots (PeQDs) are emerging as one of the most promising candidates for next-generation display technology due to their outstanding optical and electrical properties. However, the inherent instability, lead-toxicity and poor electrical conductivity of PeQDs films have seriously hindered their commercial applications. To solve these problems, we adopted the strategy of Zr ions doping and in-situ passivation of CsPbBr 3 PeQDs with the short-chain inorganic ligand potassium thiocyanate (KSCN), which not only enhanced the stability and boosted the photoluminescence quantum yield (PLQY) of PeQDs films, but also improved their electrical conductivity. To further solve the problem of charge injection balance and improve the operating lifetime of the devices, we simultaneously used all-inorganic metal oxide semiconductor materials Mg-doped ZnO (Mg-ZnO) and Mg-doped NiO x (Mg-NiO x ) as the electron and hole transport layers of QLEDs (ETL and HTL), respectively. The operating stability of the devices was greatly improved while being able to withstand higher current densities. Therefore, using Zr-doped and KSCN passivated CsPbBr 3 (Zr doped CsPbBr 3 -KSCN) PeQDs as the light-emitting layer, we fabricated highly efficient and stable green-light all-inorganic quantum dots light-emitting diodes (QLEDs) with the maximum external quantum efficiency (EQE) of 13.8% and the maximum brightness of 24800 cd/m 2 . These green perovskite QLEDs provide a working half-life of 360 min (initial brightness is 1000 cd/m 2 ) and the operating half-life of the devices is more than two times higher than that of the reference devices. Our proposed strategy based on doping and in-situ inorganic ligand passivation will open a new avenue for fabricating efficient, stable and other colored perovskite QLEDs.
研究领域:
材料科学
·
电气工程
·
光电技术
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Huimin Shi,Hang Zhang,Zhi Chen,Tao Wang,Lei Wang,Wei Zeng,Guanhua Zhang,Huigao Duan
Titanium nitride (TiN) has been attracting increasing interest as an anode material for electrochemical energy storage and conversion systems due to its superior thermal stability, electrical conductivity and chemical durability. The most commonly used strategy to synthesize TiN nanostructures is nitriding TiO 2 nanostructures using ammonia gas as the nitrogen source, and thus is not environmental friendly. Herein, we report an ammonia-free strategy to synthesize TiN nanomaterials using TiO 2 precursors via a magnesium-assisted nitriding reaction using nitrogen gas (N 2 ) as the nitrogen source. Systematical studies were conducted to reveal the mechanism of magnesium-assisted nitriding process in constructing TiN nanostructures under N 2 atmosphere. The as-synthesized TiN NRs were directly used as the anodes for lithium ion batteries and delivered an excellent reversible capacity of 710 mAh g −1 at the current density of 100 mA g −1 after 200 cycles. In addition, the TiN NRs also exhibited excellent cycling stability and rate capability. Our work provides a low cost, environmental friendly and reliable strategy to synthesize TiN materials from TiO 2 by using N 2 as the nitrogen source, which may facilitate the practical applications of TiN materials in electrochemical/photo-electrochemical energy storage and conversion systems.
研究领域:
材料科学
·
电化学能源存储
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Weisan Fang,Ying Tang,Junqi Chen,Jie Li,Liang Fang
Two garnet-structured ceramics, Ca 3 B 2 GeV 2 O 12 (B = Mg, Mn), were synthesized using a traditional solid-state reaction method, and their sintering behavior, structures, vibrational spectra, and magnetic and microwave dielectric properties were characterized. Low permittivity ( ε r ) of 9.75 (Ca 3 Mg 2 GeV 2 O 12 ) and 11.06 (Ca 3 Mn 2 GeV 2 O 12 ), quality factor ( Q × f ) of 54,000 GHz (Ca 3 Mg 2 GeV 2 O 12 ) and 30,240 GHz (Ca 3 Mn 2 GeV 2 O 12 ), and temperature coefficient of resonant frequency ( τ f ) of −61.2 ppm/ ° C (Ca 3 Mg 2 GeV 2 O 12 ) and −66.4 ppm/ ° C (Ca 3 Mn 2 GeV 2 O 12 ) were obtained. The ε r value was correlated with the sum of the ionic polarization per unit volume. The Q × f value was associated with the part with a fully filled 3 d orbit, un-paired d electrons of B-site ion, and magnetic loss. The τ f was correlated to the bond valance at the A- and C-sites. Moreover, the fitting analysis of the far-infrared reflectance spectra of Ca 3 Mg 2 GeV 2 O 12 revealed that the active vibration modes in the low wave number range (100 - 400 cm -1 ) contributed mainly to the intrinsic microwave dielectric polarization.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·
IF 5.8
Wang Chu-Ya,Zhou Heng-Deng,Wang Qi,Xu Bo-Xing,Zhu Guangcan
Phosphate removal is complicated by the need for resource recovery. Biochar shows promise for efficient phosphate adsorption, but it must be modified to enhance its adsorption capacity. In this work, magnesium (Mg)-loaded biochar was synthesized through a two-step dipping and calcination process, and the MgBC600 product was used to adsorb phosphate from simulated water and biogas slurry wastewater. The phosphate adsorption capacity of Mg-loaded biochar was 109.35 mg/g, which was 12 times higher than that of unmodified biochar. The R 2 of the Langmuir and pseudo-second-order kinetic models were 0.988 and 0.990, respectively, which fitted the phosphate adsorption process of MgBC600. Phosphate adsorption by MgBC600 was a spontaneous and endothermic process. The adsorption mechanism study showed that phosphate adsorption was controlled by the formation and electrostatic attraction of MgHPO 4 . In addition, 98% of chemically adsorbed phosphate was released after regeneration. Using phosphate-adsorbed MgBC600 as a soil amendment, Arabidopsis thaliana was 1.47 times higher than that in the biochar-only group, demonstrating that this is a promising strategy for enhancing phosphate adsorption efficiency and adsorbent recycling.
研究领域:
环境科学
·
农业科学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Zehang Zhao,Guanjiu Wu,Duan Wen,Minkang Li,Yuan Li,Lu Zhang,Shumin Han
A 2 B 7 -type La–Mg–Ni-based alloys are considered as promising hydrogen storage materials . However, low absorption/desorption platform pressure and poor cycling stability restricts their practical application. The neodymium element could improve the hydrogen absorption/desorption platform pressure and the cycling stability with its smaller atomic radius and larger electronegativity . In this study the Nd 1– x Mg x Ni 3.50 ( x = 0.25, 0.30, 0.36) alloys were prepared and Mg variation was adopted to tailor the microstructure and hydrogen storage performances. All the alloys consist of Gd 2 Co 7 -type and Ce 2 Ni 7 -type superlattice structure , and the cell parameters ( a , c and V ) are reduced by increasing Mg content. The higher Mg content yields a higher plateau pressure, a higher cycling stability and an easier hydrogen release. The x = 0.30 alloy shows a plateau pressure of 0.81 MPa, a 100th-cycle capacity retention rate of 91.0 %, and a dehydriding enthalpy change of 19.18 kJ mol −1 . These good comprehensive hydrogen storage performances are attributed to the promoted crystallographic stability and reduced cell parameters.
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高影响因子
Acta Biomaterialia
·
2017
·
IF 6.319
Qiuyue Yang,Wei Yuan,Xiangmei Liu,Yufeng Zheng,Zhenduo Cui,Xianjin Yang,Haobo Pan,Shuilin Wu
The biodegradability and good mechanical property of magnesium alloys make them potential biomedical materials . However, their rapid corrosion rate in the human body’s environment impairs these advantages and limits their clinical use. In this work, a compact zirconia (ZrO 2 ) nanofilm was fabricated on the surface of a magnesium-strontium (Mg-Sr) alloy by the atomic layer deposition (ALD) method, which can regulate the thickness of the film precisely and thus also control the corrosion rate. Corrosion tests reveal that the ZrO 2 film can effectively reduce the corrosion rate of Mg-Sr alloys that is closely related to the thickness of the film. The cell culture test shows that this kind of ZrO 2 film can also enhance the activity and adhesion of osteoblasts on the surfaces of Mg-Sr alloys. Statement of Significance The significance of the current work is to develop a zirconia nanofilm on biomedical MgSr alloy with controllable thickness precisely through atomic layer deposition technique. By adjusting the thickness of nanofilm, the corrosion rate of Mg-Sr alloy can be modulated, thereafter, the degradation rate of Mg-based alloys can be controlled precisely according to actual clinical requirement. In addition, this zirconia nanofilm modified Mg-Sr alloys show excellent biocompatibility than the bare samples. Hence, this work provides a new surface strategy to control the degradation rate while improving the biocompatibility of substrates.
研究领域:
材料科学
·
生物医学工程
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2016
·
IF 3.205
Jiaguang Zheng,Xuezhang Xiao,Liuting Zhang,Yan He,Shouquan Li,Hongwei Ge,Lixin Chen
Mg(BH 4 ) 2 has been considered as one of the promising light metal complex hydrides due to its high hydrogen capacity and low cost. But its higher thermal stability (dehydrogenation at above 300 °C) needs to be improved for the practical application. In this study, the aluminum hydride AlH 3 was introduced into complex borohydride Mg(BH 4 ) 2 to synthesize a new Mg(BH 4 ) 2 AlH 3 composite by ball milling method. It is found that the active Al ∗ formed from the self-decomposition of AlH 3 can effectively improve the dehydrogenation properties of Mg(BH 4 ) 2 , the Mg(BH 4 ) 2 AlH 3 composite starts to release hydrogen at 130.8 °C with a total hydrogen capacity of 11.9 wt.%. The dehydrogenated products of the composite is composed of Mg 2 Al 3 and B at 350 °C, resulting in the improved hydrogen desorption properties of Mg(BH 4 ) 2 AlH 3 composite. The Mg 2 Al 3 and B products would be further transformed into MgAlB 4 and Al at 500 °C. Moreover, the Mg 2 Al 3 and B dehydrogenated products show better reversible hydrogen storage property than that of the MgAlB 4 and Al products. This research shows a way to alter hydrogen de/hydrogenation route and reversibility of Mg(BH 4 ) 2 complex hydride by compositing with AlH 3 and controlling the dehydrogenation temperature.
研究领域:
材料科学
·
能源化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2019
·Vol. 30
·期 11
·10454-10464
·
IF 2.195
Yao Jiao,Ye Huihua,Wang Xusheng,Li Yanxia
The xMg 2+ /ySm 3+ ions co-doped CaTiO 3 :0.12Eu 3+ red phosphors were synthesized by solid-state reaction method and their structure, crystalline morphology, luminescent properties, decay curves and quantum efficiency were investigated in detail. The XRD patterns show these phosphors have an orthorhombic perovskite structure when the sintering temperature was 1350 °C. From photoluminescence spectra, two excitation peaks were observed located at 397 nm ( 7 F 0 → 5 L 6 ) and 465 nm ( 7 F 0 → 5 D 2 ), and there are two prominent red emission peaks around 595 nm ( 5 D 0 → 7 F 1 ) and 616 nm ( 5 D 0 → 7 F 2 ) corresponding to the magnetic dipole transition and electric dipole transition of Eu 3+ respectively. The luminescent properties were improved by adjusting Mg 2+ and Sm 3+ ions co-doping concentration and their optimal doping amount was found to be 7 mol% and 0.5 mol%. At this moment, their internal quantum efficiency was measured to be 52.4% and 47.5% respectively and decay times were 0.64 ms and 0.59 ms. According to concentration quench theory, the critical distance between activators in CaMTiO 3 :Eu 3+ (M = Mg, Sm) were 15.27 Å and 15.07 Å. CaTiO 3 :Eu 3+ phosphor’s thermal stability has been improved a lot due to Mg 2+ introduction. When temperature increases from 248 to 388 K, the red emission intensity of CaMg 0.07 TiO 3 :0.12Eu 3+ and CaMg 0.07 TiO 3 :0.12Eu 3+ ,0.005Sm 3+ phosphors have decayed only 12.1% and 15.9% respectively. These experimental results have indicated that the synthesized red phosphors can be used in solid state lighting devices.
研究领域:
材料科学
·
光学
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DOI
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Zhanyong Zhao,Rongxia Zhao,Peikang Bai,Wenbo Du,Renguo Guan,Die Tie,Nithesh Naik,Mina Huang,Zhanhu Guo
A new organic chemical reduction method was successfully used to synthesize magnesium-coated graphene (GNPs), and xGNPs/AZ91 nanocomposites with different contents were fabricated by vacuum hot-pressing sintering. The microstructure of the composite was mainly composed of the matrix (α-Mg) and the precipitated phase (β-Mg 17 Al 12 ) with different morphologies such as rods, spindles, and granules. The coarse irregular β phases precipitated along the grain boundaries, while fine rod-like β phases were distributed inside the crystal grains. With the increase of GNPs content, the grain and structure are significantly refined under the action of two mechanisms of increasing the nucleation rate and hindering the growth of grains. The average grain size of the 2.5-wt% GNPs/AZ91 composite dropped from 40.78 µm to 25.39 µm, a reduction of 37.7%. In addition, the orientation relationship (OR) between β-Mg 17 Al 12 and α-Mg was shown as [—3 —1 —1] β-Mg17Al12 )∥[1 —1 0 —1] α-Mg . Further, finer β phases were further precipitated in the grain boundaries and matrix. Moreover, the β precipitated phase and the GNP, as well as the GNP and magnesium-matrix formed a nano-scale contact interface and a diffusion bonding interface, thereby greatly enhancing the interface bonding strength between GNP and the matrix. Compared with AZ91 alloy , the grain refinement and load transfer caused by GNPs increased the microhardness of the composite by 17.6% and the friction coefficient was decreased by 37.4%. The significant improvement in the wear resistance of the composites was due to the effect of the lubricating layer formed by GNPs on the wear surface, which changed from severe delamination wear to slight delamination and abrasive wear behavior.
研究领域:
材料科学
·
力学
·
纳米技术
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Gang Li,Han Hua,Qican Zhou,Yiping Su,Chenye Wang,Xuehua Shen,Zuotai Zhang
Mechanochemical carbonation (MC) of alkaline solid wastes (ASW) has emerged as a promising strategy for CO2 sequestration. However, CaCO3 polymorphs formed during carbonation exhibit distinct transformation pathways that influence both sequestration durability and downstream utilization. Here, we elucidate how inherent Mg and Si species in ASW govern CaCO3 polymorph during MC. Using steel slag (SS) and blast furnace slag (BFS) as representative ASW with distinct Si/Mg availabilities, and NaHCO3 as a carbon source, we systematically investigated polymorph evolution, carbonation kinetics, and microstructure development. During carbonation, SS initially forms calcite (31.7 wt %), which transforms into monohydrocalcite (MHC, 20.4 wt % at 12 h), whereas BFS continuously yields aragonite (30.1 wt % at 12 h). These pathways stem from distinct gel-mediated microenvironments: amorphous silica gel in SS creates localized carbonate supersaturation and hydrous conditions, which kinetically promote MHC reprecipitation; whereas magnesium silicate hydrate-like (M-S-H-like) gel in BFS provides Mg-enriched surfaces (Mg/Ca = 0.98) that facilitate aragonite nucleation. Furthermore, model experiments employing carbide slag (CS, primarily Ca(OH)2) with controlled Si/Mg additives further confirm this mechanistic relationship. These findings establish a gel-mediated mechanism for CaCO3 polymorph selection and provide a basis for rationally tuning carbonation products in complex waste-derived systems.
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