ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 31
·期 9
·2008601
·
IF 16.836
Chuan Wang,Xi Lin,Christian G. Schäfer,Stefan Hirsemann,Jianping Ge
It is a challenge to prepare photonic crystal (PC) automotive coatings via spraying colloidal solutions because the fast fabrication tends to produce amorphous photonic crystals with faint colors. Here, a two-step spraying process followed by thermal curing is developed to prepare waterproof PC coatings with bright, uniform, and angular-dependent structural colors. The solvents in PC paint are studied to achieve a quick formation of liquid PC intermediate, which transformed into a highly crystalline PC coating. Thanks to the narrow and intense reflections, the as-made coatings present colors with high saturation, including the red/yellow/green/blue colors achieved by tuning the particle size, and many spectral/non-spectral colors via the mixing of base colors. Meanwhile, patterned or fully covered PC coatings with good chemical and mechanical stability can be prepared on different substrates, where the shiny colors changing with the viewing angles or the surface curvatures offer a new choice for personalized automotive coatings.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
WASTE MANAGEMENT
·
2023
·
IF 8.1
Yang Ren,Hongyun Hu,Chengyang Cao,Guangzhao Guo,Xiaodong Zeng,Chan Zou,Xian Li,Hong Yao
Disposal of automobile shredder residue (ASR) via pyrolysis enables the recovery of valuable products; however, the production of hazardous pollutants and low-value products is inevitable due to its high chlorine content. In this work, chlorine evolution behavior and the conversion mechanism during ASR pyrolysis between 480 and 600 °C were systematically studied. The experimental results for organic chlorine (Org-Cl) showed that released chlorinated gases were complex, and HCl only accounted for 35% of the gas phase products, while short-chain hydrocarbons with carbon atoms between two and four accounted for 52%. Chlorine was predominantly retained in the char, and Org-Cl was the primary contributor to the residual chlorine, accounting for over 50% of the char. The content of inorganic chlorine (InO-Cl) was low in the raw sample but significantly increased in the char. Through the distinction between organic and inorganic chlorine content in char, it was confirmed that Org-Cl could be converted to InO-Cl due to complex secondary reactions with metallic compounds. The conversion was favored by increasing the Org-Cl content and the temperature. Our findings clarified the evolution mechanism of chlorine and the transformation from Org-Cl to InO-Cl, thus providing guidance for chlorine regulation and the efficient recycling of metal resources.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Environmental Progress & Sustainable Energy
·
2022
·Vol. 42
·期 4
·e14073
·
IF 2.824
Guo Xiurong,Wang Yinghui,Zhang Haonan,Danfeng Du,Qi Zhanfeng
Biomorphic porous La 0.8 Ce 0.2 Fe 0.3 Co 0.7 O 3 perovskite-type catalysts are synthesized through a facile bio-templating method taking wood fiber as template for achieving the four-way purification of PM, NO x , CO, and HC emitted by automobile exhausts. The catalyst samples were characterized by X-ray diffractometer, Fourier-transform infrared spectroscopy, scanning electron microscope and Brunauer–Emmett–Teller analysis. The results showed that catalyst sample calcined at 700°C obtained high purity, high surface area (4.01 m 2 /g), wide pore size distribution and retained the initial wood fiber structure, which was suitable for purifying automobile exhausts. In addition, the performances for four-way purification under the simulated exhaust were analyzed by simulation test bench. The highest purification efficiency of PM, NO x , HC, and CO can reach 92%, 92%, 98%, and 76%, separately. Moreover, four-way purification mechanism was deduced according to the theoretical research of Mars-van krevelen on the redox reaction mechanism and experimental result.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Duchao Zhang,Xiaoyun Jia,Guanxing Ren,Weifeng Liu,Lin Chen,Tianzu Yang
Spent automotive catalysts (SAC) is the most important secondary resource for the recovery of platinum group metals (PGMs). This paper demonstrates that the acid-resistant and alkali-resistant cordierite carrier can be transformed into hydroxysodalite by a alkaline hydrothermal treatment (AHT), which can then be dissolved by subsequent acid leaching (AL) to enrich PGMs. Experiments were conducted to assess the influencing factors and the optimal conditions were determined as follows: holding temperature of 150 °C; NaOH to raw material mass ratio 10:10; holding time of 60 min; liquid to solid ratio of 3:1, and stirring speed of 400 rpm. The residue ratio in the AHT process was 132.57% under optimized conditions. The total residue ratio was 18.68% under fixed acid leaching experimental conditions of holding temperature of 60 °C, liquid to solid ratio of 15:1, holding time of 60 min, stirring speed of 400 rpm, and hydrochloric acid concentration of 2.5 mol·L -1 . The contents of Pt, Pd, and Rh in the enriched residue reached 650.50, 2131.54, and 405.28 g·t −1 , respectively, and the corresponding enrichment times were 7.13, 7.25, and 7.07. The additions of sodium formate before the AHT and aluminum powder during the AL were found to effectively inhibit PGMs leaching. The losses of Pt, Pd, and Rh throughout the entire process were only 2.77%, 1.89%, and 4.28%, respectively.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
IRANIAN POLYMER JOURNAL
·
2014
·Vol. 23
·期 4
·297-305
·
IF 1.469
Shi Hong,Liu Xueqing,Zhang Yuanfang
With the fast development of auto industry, more and more new functional materials are developed to satisfy our life. Auto interior materials are usually suffered from the attack of bacteria and therefore affect people. In this work, we reported on the fabrication of novel antimicrobial poly(vinyl chloride) plastic (PVCP-I, PVCP-II) with antimicrobial halloysite nanotubes and SiO 2 /ZnO/ZnS/Ag 2 S nano-composites as additives, respectively, and then these two kinds of novel antimicrobial poly(vinyl chloride) PVC materials were applied to automobile interior. Firebrake ® ZB was used as the fire retardant and the results showed that the prepared PVC materials have excellent non-flammability properties. The oxygen indexes of traditional PVCP, PVCP-I and PVCP-II were 30.1, 31.9 and 32.5 %, respectively. PVC antimicrobial materials were prepared by coating on the special paper. PVCP-I and PVCP-II could kill more than 99 % of Escherichia coli and Staphylococcus aureus with concentration of about 7 × 10 7 and 4 × 10 7 CFU mL −1 , respectively. Mechanical properties and thermal stability were also investigated to study the physical characteristics of the prepared PVC plastic. The formation of nano-additives was confirmed by X-ray diffraction and transmission electron microscopy techniques. Antimicrobial capacity was used as a probe to evaluate the potential applications of prepared PVC-I and PVC-II materials in antimicrobial automobile interiors. Also, the material was characterized by thermo-gravimetric analysis; the result showed that PVCP-I and PVCP-II have excellent thermo-stability. What counts is the simple processing and outstanding characteristic of the PVCP material and great application potential may have in store for the obtained antimicrobial PVC-I and PVCP-II.
研究领域:
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
·
2018
·
IF 0
Wu Lei,Ben Ma,Jian Pu,Chi Bo,Li Jian
As the ceramic substrate materials in automobile oxygen sensor, 5YSZ/Al2O3 matrix composite ceramic with different amount of silica are prepared by ball-milling,tape casting and sintering.They are investigated for their microstructure and mechanical properties.The microstructure of the sample is analyzed by Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX).Fracture strength is measured by ring-on-ring method. It is found that adding 1 wt.% SiO2 into 5YSZ/Al2O3 matrix can improve the strength of composite ceramics.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2021
·Vol. 27
·期 4
·833-840
·
IF 1.993
Zijie Xie,Chao Liu,Guilong Xu,Jian Hu
In this work, poly-epoxy-acrylate (PEA) resin was prepared by modifying polyacrylate resin with epoxy resin through a simple solution polymerization method. The prepared PEA resin was then neutralized by alkaline treatment to obtain excellent water solubility and used as an ecofriendly binder for automotive oil filter paper. The effect of alkaline neutralization degree on the water solubility of the PEA resin was studied. Also, the influence of epoxy content on the grafting degree of PEA resin was tested. The mechanical strength and oil resistance properties of oil filter paper strengthened by the prepared PEA resin were compared to other commercial binders. The microstructure and pore size of the oil filter paper were observed by scanning electron microscope and tested by capillary flow porometer (PMI), respectively. The results show that the prepared PEA resin can greatly enhance the mechanical and oil resistance properties of the oil filter paper while maintaining its filtration properties. The prepared PEA resin has the potential to be used as an ecofriendly water-based binder for automotive oil filter paper.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Weijia Li,Lingchu Huang,Tong Wang,Xidong Hao,Bin Wang,Qi Lu,Xishuang Liang,Fengmin Liu,Fangmeng Liu,Chenguang Wang,Geyu Lu
The development of high-performance gas sensors for detecting trace amount of CH 3 OH is an essential and a challenging task for safety using fuel cell vehicles (FCVs). In this work, the metal oxides (SnO 2 , In 2 O 3 , CuO) are employed as the catalyst carrier materials in fuel cell type sensors for the first time to replace traditional carbon, with which the Pt/MO x based fuel cell type sensors are fabricated. Among them, Pt/SnO 2 based sensor displays the lowest detection limit because SnO 2 carrier can not only support Pt particles but also provide an appropriate number of electrons for Pt, which is beneficial to reduce the adsorption strength of the intermediates and then improves the catalytic ability. The detection limit is as low as 0.5 ppm, the lowest of the various types of CH 3 OH sensors that work at room temperature. Moreover, the Pt/SnO 2 based fuel cell type sensor displays the characters of high selectivity, good repeatability and robust moisture resistance. To the best of our knowledge, this is the first report employing MO x as the catalyst carrier materials in fuel cell type sensors.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Shu-Huan Chen,Huma Javeria,Xu-Hui Sun,Zhen-Xia Du
With the proliferation of vehicles in households, people are spending more and more time in their cars, so it is important to ensure the air quality and safety of the car. In this research, environmentally friendly, green PET@PDA@MIL-101(Fe) (PPM) was prepared by in-situ solvothermal growth and acid etching methods, which was categorized by SEM, FTIR, XRD, XPS, and BET. PPM was used to adsorb benzene, toluene, and m-xylene at low concentrations. The maximum amount of adsorption of PET@PDA@MIL-101(Fe) (PPM) for benzene, toluene, and m-xylene was 68.72 mg/g, 91.63 mg/g, and 78.47 mg/g respectively. The adsorption process of PPM is well fitted by the pseudo-first-order kinetic model and Langmuir isothermal adsorption model. Furthermore, PPM exhibited excellent toluene removal performance in simulated vehicles and excellent cycling capability in adsorption-desorption experiments. As a result, PPM can be used to treat and manage toluene volatile organic compounds (VOCs) at low concentrations.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Tao Long,Zixin Wang,Yuxiao Fan,Hui Lin,Haojie Sun,Cheng Zou,Dawei Zhang,Songlin Zhuang
In this study, two kinds of composite ceramic phosphors, Ce 3+ :YAG/Al 2 O 3 and Ce 3+ :Y(Gd)AG/Al 2 O 3 were prepared via solid state reaction sintering in flowing pure oxygen at atmospheric pressure. The ceramic phosphors were packaged into chip-scale white light emitting diodes (w-LEDs), and laser assisted w-LED automobile headlight prototypes were assembled. The luminous flux output of the w-LEDs was significantly improved through additional blue diode laser excitation. Notably, the Al 2 O 3 phase is able to impart an improvement in the luminescence saturation exhibited by Ce 3+ :Y(Gd)AG, which typically reaches saturation prior to Ce 3+ :YAG.
研究领域:
材料科学
·
光学工程
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2019
·
IF 4.046
Wengang Zhang,Y.X. Zhang,Zhirong Jia,Fang Wang,Longting Ding
In this paper, by designing the UV irradiance, the compositions and the initial concentrations of automobile exhaust, an asphalt mixture test system – photocatalytic decomposition of automobile exhaust performance (AMTS-PDEP) was developed based on the photocatalytic mechanism of titanium dioxide (TiO 2 ). Testing method and calibration method of test data were also proposed in this paper. Accumulative decomposition ratio (ADr) was used as the evaluation indicator of photocatalytic decomposition of automobile exhaust performance (PDEP) and the influencing factors of PDEP were proposed. Based on the mechanical behavior and PDEP, the design method of asphalt mixture material composition was developed and the attenuation law of PDEP was also demonstrated. The results show that the PDEP of anatase TiO 2 is much better than Rutile TiO 2 . The PDEP of asphalt mixture with 0.3 μm TiO 2 is better than other particle sizes. Affected by particle adhesion, the PDEP of asphalt mixtures with 3.5% content of TiO 2 reaches the maximum value. The PDEP has positive correlations with volume (VV) of asphalt mixtures, irradiance and temperature. It is recommended that anatase TiO 2 (0.3 μm) is used as the photocatalyst, the optimum TiO 2 content is 3.1%, TPS modified bitumen is used as the binder, and porous asphalt concrete with a nominal maximum aggregate size of 13 mm (PAC-13) is used as the optimal structural carrier. The PDEP of asphalt mixture decreased with the increase of test times, but it returns to its original level immediately after simply rinse, and repeated rinse does not reduce the PDEP. The PDEP of asphalt mixture decreases with the increase of the pollution index or the decrease of VV caused by compacting.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2024
·
IF 1.9
Wang Zhan,Xin Feng,Qingwu Zhang,Le Chen,Lixia Li,Qinghong Kong,Fan Shi,Mingyi Chen,Daolin Du,Juncheng Jiang
In order to reach the fire protection standard for new energy vehicle battery packs, the incorporation of SiO2 aerogel particles as a functional filler in the nitrogen and phosphorus fire-retardant system is necessary due to the inadequate mechanical properties. The effects of SiO2 aerogel on the properties of the coatings for the electric car battery pack were investigated by fire protection test, thermogravimetric analysis, limited oxygen index, UL-94 vertical test, combustion test, mechanical properties test, and weathering resistance test. The backside temperature fireproof coatings containing 1.5% SiO2 aerogel was effectively reduced to 250.2 ± 0.1 °C and the residual weight of the coating reached 32.61 ± 0.01%. The composition and structure of the carbon layer were analyzed further. Especially, the weight loss percentage of the fireproof coating is only 5.87 ± 0.02% in the water resistance test. However, excessive SiO2 aerogel decreased the performances of fireproof coatings.
研究领域:
材料科学
·
能源工程
✓ 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）