LANGMUIR
·
2025
·
IF 3.9
Xiaohua Wang,Yanwei Li,Guang Sun,Jianliang Cao,Yan Wang
Recently, because of the urgent need for safety and health protection, there has been a growing focus on exploring effective and feasible gas sensors based on metal oxide semiconductors (MOSs) for detecting trace levels of hydrogen sulfide (H2S). In this context, a cobalt (Co) doping strategy was proposed to improve the H2S-sensitive properties of In2O3 nanomaterials, enabling them to monitor 1 ppm of H2S at a relatively lower temperature. The Co-doped In2O3 hierarchical porous nanocubes (Co–In2O3 HPNCs) were prepared through a hydrothermal route using In(OH)3 as a precursor. When utilized as a sensing material to detect H2S, the Co–In2O3 HPNCs demonstrated significant enhancements compared to pure In2O3. These enhancements include a reduction in the operating temperature (260 vs 300 °C), a significant increase in response (36.99 vs 12.28 for 20 ppm of H2S), and better selectivity (13.21 vs 3.07 times to ethanol). Even to 1 ppm of H2S, the Co–In2O3 sensor can give a response value of 1.86, highlighting its substantial potential for detecting H2S at the limit of detection (LOD) of 1 ppm. A detailed analysis of the multiple sensitization effects of Co doping reveals that these improved H2S sensing characteristics of Co–In2O3 HPNCs can be primarily traced back to three factors, namely, an increased oxygen vacancy concentration, a narrowing of the bandgap, and an upward shift of the Fermi level.
研究领域:
材料科学
·
传感器技术
·
环境监测
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DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Kai Ma,Xingyu Gan,Weichao Li,Laibo Li,Lingchao Lu,Haiming Zhang
Carbon sequestration of cement-based composites is an essential pathway towards the strategic goal of achieving carbon neutrality. However, the efficiency of cement-based composites to sequester carbon dioxide (CO 2 ) is limited. Inspired by legume structure, a sandwich-structured graphene oxide embedded with In(OH) 3 (SGOI) was synthesized to simultaneously enhance the CO 2 sequestration capacity, hydration kinetics, and mechanical performances of cement-based composites. The effect of SGOI content on the CO 2 sequestration capacity, hydration kinetics, and mechanical performances of cement-based composites was evaluated. The results show that the CO 2 sequestration, compressive strength, flexural strength, and eco-mechanical index of the hardened cement paste containing 0.03 wt% SGOI were achieved 52.55 g/kg, 105.1 MPa, 13.9 MPa, and 0.75 kgCO 2 /MPa, representing enhancements of 255.07 %, 32.70 %, 34.95 %, and 167.86 % compared to those of cement paste without SGOI, respectively. Meanwhile, the hydration reaction rate and hydration degree of cement at each stage were improved. The enhancement of these parameters is derived from the structural characteristics of SGOI, including the specific surface area (30.52 m 2 /g), interlayer distance (14.85 nm), and roughness (14.10 nm). One ton of hardened cement paste containing 0.03 wt% SGOI can sequestrate at least 31.09 kg of CO 2 within 28 days, highlighting its significant potential for promoting CO 2 neutrality.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Kuan Liu,Guixiang Liu,Bo Dai,Qiuyang Zhang,Yong Ren,Fang Xu,Junbo Wu,Wei Wang,Jiurui Yang,Yulin He
Bi 1.2 Ca 1.2 Y 0.6 Zr 0.4 In x V 0.4 Fe 4.2-x O 12 (x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5) ceramics were prepared using a conventional ceramic process at a reduced sintering temperature. The phase composition, microstructure, and electromagnetic properties of the as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy equipped with energy spectrometer, vibrating sample magnetometry, and precision impedance analyzer.The results indicated that the substitution of Bi 3+ ion effectively reduced the sintering temperature of YIG ferrite, the magnetic-dielectric properties of the YIG ferrite could be precisely tuned by adjusting the content of In 3+ ions. The highly dense ceramic samples with garnet structure were obtained at a sintering temperature of 1020 °C. The sintered sample with x = 0.2 exhibited the optimum comprehensive performance: an average grain size of 3.4 μm, 4π M s of 1184.81 G; and an initial permeability of 78.6, a magnetic loss of 7.06× 10 −3 , and a permittivity of 16.67 at 100 kHz.
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DOI
高影响因子
POLYMER
·
2024
·
IF 4.1
Zecheng Cao,Xiaojiao Kang,Wei Lü,Hongcheng Wang
With the advancement of economic development and the increasing complexity of commodity distribution, efficient and precise anti-counterfeiting measures have garnered significant attention in recent decades. This challenge necessitates the development of flexible films exhibiting both superior mechanical and optical properties to accommodate various anti-counterfeiting applications. This study introduces a composite film comprised of waterborne polyurethane (WPU), gelatin quantum dots (QDs), and glycerol. Glycerol, employed as a plasticizer, enhances the film's plasticity by disrupting hydrogen bonds within the matrix. The tensile strength decreased from 7.7 MPa to 1.73 MPa, while the elongation at break increased from 410 % to 656 %, compared to the samples without glycerol. The resulting films exhibit advantageous properties, including facile preparation, high transmittance, excellent optical properties, and excellent mechanical performance. Additionally, the photoluminescence intensity decreased by only 15 % after being placed in air for 30 days. They demonstrate commendable stability under ambient temperature and environmental conditions, making them suitable for diverse and intricate anti-counterfeiting applications. The emission wavelength of the composite films was tuned by adjusting the cation ratio of the QDs, and the mechanical properties can be adjusted by varying the QD and glycerol contents. This work offers valuable insights for the development of advanced flexible materials for anti-counterfeiting purposes.
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 27
·12153-12161
·
IF 2.7
Kun Liu,Ke Hu,Nannan Zhang,Yujing Ling,Xianglong Guan,Taotao Xu,Angli Zhang,Jing Wang,Xiaowu Liu,Xucheng Fu
The performance of the oxygen reduction reaction (ORR) can be enhanced through the utilization of multi-heteroatom doped, porous, and layered electrocatalysts. Nitrogen-doped graphene-like porous carbon (Cu–Fe–CN) was synthesized via a simple and cost-effective NaCl template method using maltose, FeCl3·6H2O, and CuCl2·H2O as precursors. This material exhibits excellent electrocatalytic activity towards the ORR. During the electrocatalysis process, the maltose-derived graphene-like porous carbon possesses abundant pores that facilitate rapid mass and electron transfer. Additionally, the incorporation of polyatomic dopants and the construction of the porous carbon framework result in an abundance of active sites. The optimized Cu–Fe–CN electrocatalyst exhibited a more positive half-wave potential (E1/2 = 0.87 V) in alkaline media, surpassing that of the commercial Pt/C (E1/2 = 0.84 V), and demonstrated exceptional durability. The average discharge voltage of Al–air batteries with the Cu–Fe–CN catalyst is always higher than that of Al–air batteries with the commercial Pt/C catalyst, at the same current density. The present study showcases a convenient approach for fabricating porous low-metal catalysts for the ORR, highlighting their immense potential in ORR catalysis and aluminum–air batteries.
研究领域:
材料科学
·
电化学
·
能源存储与转换
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Xiaojiao Kang,Tianyu Gao,Wei Lü,Ming Jiang,Hongbo Zhu,Hongcheng Wang
Ternary I-III-VI quantum dots (QDs) are promising substitutions to Pb and Cd chalcogenide QDs in various applications such as LED, biodetection and sensing. It is urgent to explore near-infrared (NIR) emitting QDs with the advantages of low-cost synthesis and nontoxicity. Herein, water-soluble NIR Cu-In-S/ZnS (CIS/ZnS) QDs were obtained utilizing thioglycolic acid (TGA) and polyethyleneimine (PEI) as the stabilizing molecules in a commercial pressure cooker. Moreover, we detailedly investigated the influence factors on the PL property of CIS QDs and CIS/ZnS QDs including species of sulfur source, reaction time, pH, the dosage of TGA, PEI, Na 2 S, number of ZnS coating layers and the molar ratio of Cu/In. These QDs with adjusting Cu/In ratios show the emission maximum in the range of 710–750 nm. The maximum PL quantum yield (PLQY) of 20 % was acquired for CIS/ZnS QDs with a Cu/In ratio was 0.33/1 and three ZnS layer coating. Finally, we fabricated a NIR pc-LED lamp by using blue LED chips and CIS/ZnS QDs. The device shows a broadband NIR emission centered at 770 nm, which can be applied in night-vision system.
研究领域:
材料科学
·
光学
·
生物医学工程
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DOI
高影响因子
DYES AND PIGMENTS
·
2024
·
IF 4.1
Song Wei,Xiang Luo,Shaofeng Shao,Lei Zhang
Machine learning-assisted synthesis of new materials has been an ongoing hot topic. Luminescent Ag–Zn–In–S quaternary semiconductor quantum dot thin films have great application potential in many fields because of their excellent photoelectric performance. In this study, an environmentally friendly ionic liquid-assisted approach was employed to prepare high-performance Ag–Zn–In–S luminescent thin films, and machine learning methods were applied to screen the optimal preparation conditions. The photoluminescence (PL) performance, crystal structure, and morphology of the thin films were also been studied. The initial data set was obtained by high-throughput experiments. By comparing machine learning algorithms of Xgboost, Random Forest, Bagging, SVM, Extra Tree, and Gradient Boosting, the Random Forest achieved the best accuracy (r = 0.84, R 2 = 0.847) and was selected to predict the optimal preparation conditions of Ag–Zn–In–S quaternary quantum dot thin films. The machine learning predicted results are in great agreement with the subsequent experimental results, which verifies the accuracy and effectiveness of the machine learning model. This study offers a theoretical foundation for preparing optimal inorganic quantum dot luminescent materials using machine learning.
研究领域:
材料科学
·
光学工程
·
人工智能
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DOI
高影响因子
Advanced Energy Materials
·
2020
·Vol. 10
·期 40
·2001583
·
IF 25.245
Xinhai Yuan,Xiongwei Wu,Xian-Xiang Zeng,Faxing Wang,Jing Wang,Yusong Zhu,Lijun Fu,Yuping Wu,Xiangfeng Duan
Aqueous rechargeable batteries (ARBs) offer advantages in terms of safety, environmental friendliness and cost over their non-aqueous counterparts. However, the narrow electrochemical stability window of water inherently limits the output voltage and energy density of ARBs. Here, a system with an aqueous hybrid electrolyte containing a Zn anode in alkaline solution and LiMn 2 O 4 cathode in neutral solution is reported. Combining the separated electrode-electrolyte with a Li + -conducting membrane, the potential window is effectively widened to enable an aqueous hybrid electrolyte rechargeable battery (AHERB) above 2.3 V. This battery system delivers a steady energy density of 208 Wh kg −1 (based on the total weight of active materials) at 1.69 C with a high average output voltage up to 2.31 V, cycled for over 1000 cycles with an average Coulombic efficiency of >98%.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2020
·
IF 8.247
Xinan Shi,Lijian Huang,Daocheng Pan
In this research, a facile and environmentally friendly solution approach is developed to deposit Cu 2 ZnSn(S,Se) 4 thin films by addition of n -butylammonium butyrate ionic liquid . n -Butylammonium butyrate plays a critical role in solution deposition of Cu 2 ZnSnS 4 precursor thin film. We find that liquid n -butylammonium butyrate can dissolve a number of metal oxides , including Cu 2 O, ZnO, and SnO as well as various metal chlorides , metal nitrates and metal acetates. Smell-free Cu 2 ZnSnS 4 precursor solution is synthesized by dissolving Cu 2 O, ZnO, SnCl 2 and thiourea in an ethanol solution of n -butylammonium butyrate. Thermally degradable n -butylammonium butyrate can be completely removed by a low-temperature sintering process , forming high quality Cu 2 ZnSnS 4 nanoparticle thin film. A power conversion efficiency of 8.79% is obtained by this facile and green solution approach.
研究领域:
材料科学
·
能源科学
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DOI
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-8
·
IF 12.121
Chen Kejun,Liu Kang,An Pengda,Li Huangjingwei,Lin Yiyang,Hu Junhua,Jia Chuankun,Fu Junwei,Li Hongmei,Liu Hui,Lin Zhang,Li Wenzhang,Li Jiahang,Lu Ying-Rui,Chan Ting-Shan,Zhang Ning,Liu Min
Iron phthalocyanine (FePc) is a promising non-precious catalyst for the oxygen reduction reaction (ORR). Unfortunately, FePc with plane-symmetric FeN 4 site usually exhibits an unsatisfactory ORR activity due to its poor O 2 adsorption and activation. Here, we report an axial Fe–O coordination induced electronic localization strategy to improve its O 2 adsorption, activation and thus the ORR performance. Theoretical calculations indicate that the Fe–O coordination evokes the electronic localization among the axial direction of O–FeN 4 sites to enhance O 2 adsorption and activation. To realize this speculation, FePc is coordinated with an oxidized carbon. Synchrotron X-ray absorption and Mössbauer spectra validate Fe–O coordination between FePc and carbon. The obtained catalyst exhibits fast kinetics for O 2 adsorption and activation with an ultralow Tafel slope of 27.5 mV dec −1 and a remarkable half-wave potential of 0.90 V. This work offers a new strategy to regulate catalytic sites for better performance.
研究领域:
材料科学
·
电化学
·
理论计算
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产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2015
·
IF 4.772
Xiaojiao Kang,Lijian Huang,Yanchun Yang,Daocheng Pan
Approximately 3 g of water-soluble AgInS2/ZnS core/shell quantum dots (AIS/ZnS QDs) with a maximum photoluminescence quantum yield of up to 39.1% was synthesized in an aqueous solution of gelatin and thioglycolic acid (TGA). The composition of the AIS QDs could be readily adjusted by controlling the molar ratio of the starting Ag/In precursors in the reaction solution, which leads to a tunable emission ranging from 535 to 607 nm. The as-prepared core/shell QDs exhibit excellent photostability and water/buffer stability. More importantly, these cadmium-free hydrophilic AIS/ZnS core/shell QDs are biocompatible and can be directly utilized in cancer cell imaging.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
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DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 39
·23410-23416
·
IF 3.119
Yanyan Chen,Qi Hu,Qiang Wang,Minghui Yu,Xiaoyu Gong,Shenjie Li,Jin Xiao,Yingjie Guo,Guangyu Chen,Xinyu Lai
With the rapid development of commodity circulation, more attention has been paid to the anticounterfeiting technology of commodities, including stability, universality and ease of distinguishing. The authors report the use of gelatin–chitosan–glycerin/QD nanocomposite-functionalized glue for luminescent anti-counterfeiting labels. As the blend and plasticizer, the addition of chitosan and glycerin effectively improved the flexibility and formability of the gelatin–chitosan–glycerin/QD composite films, which show excellent mechanical properties, including high transparency, luminescence and flexibility, and they are easy to prepare on a large scale, providing certain reference values for new anticounterfeiting technology applying a variety of morphologies.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）