Journal of Cleaner Production
·
2018
·
IF 5.651
Chen Fan,Hongqiang Dong,You Liang,Jiale Yang,Gang Tang,Wenbing Zhang,Yongsong Cao
Cyhalothrin is lethally toxic to aquatic organisms and has caused adverse effects in the hydrosphere . It is urgent to develop efficient and sustainable material for its removal. High-quality HKUST-1 was rapidly synthesized by cholinium ionic liquids (ILs) in water at room temperature. Yields of HKUST-1 showed obviously positive correlation with Hammett values of ILs. When applying CuCl 2 as a copper salt, the yield of products was reached up to 95.5%, which was much higher than that of reported research. The reaction could be readily scalable with high space-time yield (242512 kg m −3 d −1 ). Additionally, ZrO 2 @HKUST-1 composite was successfully synthesized through a sol-gel method without complicated heat treatment. The whole process eliminates the use of environmentally unfriendly solvents/amines and enables the production of material at a reasonable cost. The obtained HKUST-1 and ZrO 2 @HKUST-1 possessed large pore volume (0.88–0.95 cm 3 g −1 ) and high surface area (1152–1484 m 2 g −1 ). The composite material was used for the adsorption/degradation of cyhalothrin and showed superior photocatalytic activity under moderate visible light, as compared to pure ZrO 2 , HKUST-1 and commercial TiO 2 samples. ZrO 2 @HKUST-1 displayed the high cyhalothrin adsorption capacity of 333 mg g −1 through π−π stacking, which facilitated more target molecules to contact the composite in a short time. ZrO 2 incorporating with HKUST-1 protected ZrO 2 nanoparticles from rapid agglomeration, thus narrowed the band gap of the composite. Moreover, the formation of a junction between HKUST-1 and ZrO 2 effectively reduced the recombination of photoinduced carriers in composite. Therefore, the novel ZrO 2 @HKUST-1 composite can be used as a sustainable efficient heterogeneous photocatalyst for the removal of organic pollutant.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 128
·106053-106060
·
IF 3.84
Jie Wang,Ting Qu,Minsi Liang,Zhenbo Zhao
In this work, we investigated the dehydration of fructose into 5-hydroxymethylfurfural using solid catalysts with microwave assistance in dimethyl sulfoxide. Five kinds of solid catalyst ZrO2, WOx/ZrO2, MoOx/ZrO2, SO42−/WOx–ZrO2 and SO42−/MoOx–ZrO2 were prepared and characterized by XRD, UV-DRS, FTIR, XPS, TEM, TPD, BET, and Raman and the surface acid amount was obtained by combining pyridine adsorption and UV spectrometry. The SO42−/WOx–ZrO2 catalyst was found be the most active catalyst, and a fructose conversion of 95.80% with 83.90% 5-HMF yield was obtained at 150 °C in a relatively short reaction time of 5 min. The value of the activation energy was comparable with previous values reported in the literature, implying that SO42−/WOx–ZrO2 was efficient for the dehydration of fructose to 5-HMF and that microwave radiation heating had a remarkable accelerating effect on the fructose conversion.
研究领域:
化学工程
·
催化科学
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DOI
高影响因子
Journal of Coatings Technology and Research
·
2022
·Vol. 20
·期 3
·869-881
·
IF 2.339
Li Xianwen,Xu Xinmeng,Zhang Faai
Hydroxyl acrylate emulsion was prepared firstly by the semicontinuous seeded emulsion polymerization, and then adding polyaniline (PANI)/Cu/ZrO 2 ternary nanocomposites, two-component waterborne polyurethane (2 K WPU) composite coatings with antistatic and antibacterial properties were obtained by mixing the emulsion with hydrophilic modified polyisocyanate. The structure and morphology of the PANI/Cu/ZrO 2 were observed by Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray diffractometer. The thermal, antistatic, antibacterial, anticorrosion, and mechanical properties of the 2 K WPU composite coatings were determined. The results showed that the addition of the ternary nanocomposites increased the antistatic, antibacterial, anticorrosion, and mechanical properties of the 2 K WPU coating. The initial decomposition temperature increased from 200 to 225°C, and the tensile strength increased by 44.4%. The coatings still maintained good impact strength of 50/50 kg cm, adhesion of grade 2, flexibility of 1 mm, pendulum hardness of 293 s, and the gloss (60°) of 119.4.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2023
·Vol. 20
·期 4
·2449-2465
·
IF 2.1
Qingliang Shan,Qian Ma,Yudong Xue,Haolin Li,Xiaoyan Yang,Anze Shui
The damage modes of Al 2 TiO 5 flexible ceramics (AT) with microcracks strengthened were studied by machine leaning for damage mode identification. Results show that the optimal number of clusters increases from 3 to 4 with the increase of ZrO 2 content. Meanwhile, the concentrated region of cluster with the same label gradually shifts to the direction of low amplitude with increase of ZrO 2 . In addition, the quantity of cluster is easy saturated since the AT grain boundary microcracks are strengthened by the formation of ZrTiO 4 . For achieving the automatic identification of different damage modes, support vector machine based on Kennard-stone training set selection was used to distinguish the damage modes of other samples in the same sample set. Almost the same evolution trend of corresponding clusters in new samples and training samples proves high efficiencies of this method.
研究领域:
材料科学
·
机械工程
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Yumin An,Jiabao Xu,Mingyao Song,Liwen Yan,Libin Zhao
In this work, a (Ce 0.2 Sm 0.2 Gd 0.2 Nd 0.2 Y 0.2 ) 2 Zr 2 O 7 -ZrO 2 ceramic fiber aerogel was successfully prepared by combining airflow spinning and high-temperature pyrolysis method using rare earth carbonates as raw materials. XRD, TEM, and EDS analyses showed that the (Ce 0.2 Sm 0.2 Gd 0.2 Nd 0.2 Y 0.2 ) 2 Zr 2 O 7 -ZrO 2 ceramic fiber aerogel exhibited a composite structure of defective fluorite and cubic zirconia phases after heat treatment at 1200 °C, with a uniform distribution of rare earth elements. The aerogel was able to achieve excellent compression resilience when compressed in liquid nitrogen, room temperature and alcohol lamp flame. In addition, the thermal conductivity of (Ce 0.2 Sm 0.2 Gd 0.2 Nd 0.2 Y 0.2 ) 2 Zr 2 O 7 -ZrO 2 ceramic fiber aerogel was about 31.9 mW·m -1 ·K -1 at room temperature, and the ceramic fiber aerogel could reduce the high temperature of 1200 °C to about 323 °C with 10 mm thickness and remain stable. The infrared reflectance of the ceramic fiber aerogel after heat treatment at 1000 °C is 91.7%, which demonstrates excellent thermal radiation shielding capability.
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高影响因子
Inorganic and Nano-Metal Chemistry
·
2021
·
IF 1.716
Changsheng Qu,Hao Zhou,Dongyao Xu,Jiaojiao Guo,Danyang Zhao,Xuewei Guo,Luyuan Xing
In this study, the manganese was loaded on three different zirconia crystal types by ultrasonic impregnation method, and the performance of selective catalytic reduction (SCR) of NOx with NH3 was tested. The characteristics of the catalytic were tested by BET, XRD, SEM, and XPS. It was founded that the performances of unloaded different crystal zirconia was basically the same which were less than 40%. Compared with unloaded catalyst, the DeNOx performance of catalysts after loaded manganese was greatly improved, and the crystal type had obvious influence on the DeNOx performance of Mn/x-ZrO2. The Mn/m-ZrO2 had the highest DeNOx performance (90.97% at 240 °C) compared with the Mn/t-ZrO2 and Mn/c-ZrO2. The difference of crystal type made Mn/m-ZrO2 have lower surface Mn average valence states and more oxygen vacancy, which made it have best DeNOx performance. The effects of SO2, H2O, and alkali metal on DeNOx efficiency were also tested.
研究领域:
环境科学
·
催化材料科学
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DOI
高影响因子
Plasma Processes and Polymers
·
2024
·Vol. 21
·期 7
·2400037
·
IF 2.9
Xuming Zhang,Yun Shan,Zhi Sun,Hua Pan,Yuzhen Jin,Zuchao Zhu,Liancheng Zhang,Wenhao Lin,Zhengbo Dai,Zhengang Lou,Huaming Li,Kai Li
Plasma catalytic CO 2 hydrogenation to methanol over MnO x /ZrO 2 catalyst was investigated in this work. A boosted methanol yield of 4.6 mg/h was obtained over MnO x /ZrO 2 catalyst, while it was only 0.0 and 0.7 mg/h for ZrO 2 and MnO x catalyst, respectively. The interaction between MnO x and ZrO 2 was responsible for the enhanced methanol yield. It resulted in sufficient oxygen vacancy. The in situ DRIFT spectra was conducted to reveal the plasma catalytic CO 2 hydrogenation to methanol reaction mechanism and the key intermediates of HCOO and CH 3 O species were determined. The sufficient oxygen vacancy promoted the formation of the key intermediates, especially the CH 3 O species.
研究领域:
催化化学
·
材料科学
·
环境科学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Shuang Yin,Chengyun Sun,Yao Zhang,Wei Wan,Linjun Cao,Huihua Min,Xia Fang,Haiqiang Ma,Xinchun Xie,Tianyu Li,Xuewen Jiang,Aiwen Xie,Liqiang Liu,Cong Zhou,Ruzhong Zuo
Herein, the fused silica ceramics integrating good mechanical and dielectric properties were successfully prepared by gelcasting and pressureless sintering by introducing ZrO 2 as reinforcement phase. After sintering at 1250 °C for 6 h, the introduced m-ZrO 2 underwent a displacive phase transformation from m-ZrO 2 to t-ZrO 2 . More importantly, some t-ZrO 2 phases were stably retained to room temperature by doping Y 2 O 3 . The ZrO 2 phases filled the irregular pores formed by micro-scale fused silica particles, which significantly increased the bulk density from 1.56 g/cm 3 for pure fused silica ceramics to 2.07 g/cm 3 for fused silica ceramics containing 20 wt% ZrO 2 . By reason of the increasing bulk density, stress-induced phase transformation toughening, microcrack toughening, and dispersion strengthening, the fused silica ceramics containing 16 wt% ZrO 2 displayed the highest flexural strength of 110.6 MPa, which was 83.4 % higher than pure fused silica ceramics. Throughout X-band, the prepared fused silica ceramics with different ZrO 2 contents showed good dielectric properties. The dielectric constant and dielectric loss tangent were less than 4.0 and 0.01, respectively. This work demonstrates that combining gelcasting and pressureless sintering is a practical approach for fabricating fused silica ceramics possessing good mechanical and dielectric performance through introducing ZrO 2 as reinforcement phase.
研究领域:
材料科学
·
陶瓷工程
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DOI
高影响因子
ACS Catalysis
·
2026
·
IF 13.6
Liu Meng-Nan,He Zhen-Hong,Chen Zhuo,Wang Sen-Wang,Ruan Miao,Luo Yanping,Wang Kuan,Wang Weitao,Wang Huan,Liu Zhao-Tie
Direct hydrogenation of CO 2 to liquid hydrocarbons (C 5+ ) at low temperature is a highly desirable but challenging transformation, as conventional catalysts typically operate at high temperatures via indirect pathways by producing and using a CO intermediate. In this work, we report an inverse ZrO 2 /Co catalyst that enables direct CO 2 hydrogenation to C 5+ hydrocarbons at a low temperature of 200 ° C. Under optimal conditions, the catalyst achieves a high CO 2 hydrogenation activity of 26.0 mmol CO2 ·g Co –1 ·h –1 with 58.9 C-mol % selectivity toward C 5+ liquid hydrocarbons and negligible CO formation. The inverse architecture of ZrO 2 /Co, wherein ZrO 2 nanoislands are dispersed over metallic Co 0 particles, concurrently not only enhances CO 2 adsorption and suppresses H 2 adsorption but also delivers a surface C/H ratio approximately 31 times higher than that of pristine Co 0 , thereby promoting chain growth. In situ DRIFTS reveals that the inverse catalyst generates abundant oxygen-containing intermediates (HCOO–, HCO 3 –, CH 3 O–, and CH 3 COO–), which are subsequently hydrogenated to CH x for chain growth over Co 0 sites. This work not only provides a low-temperature catalyst for direct CO 2 -to-C 5+ conversion but also establishes inverse oxide/metal interfaces as a general platform for tuning C–C bond coupling in CO 2 hydrogenation.
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DOI
高影响因子
Water
·
2026
·Vol. 18
·期 19
·2454
·
IF 3.5
Jia Xu,Wei Qiu,Jingjing Yao
Peroxymonosulfate-based oxidation inevitably generates sulfate in the effluent, which may stimulate sulfate-reducing bacteria and pipeline corrosion. Sulfate-polishing adsorbents suitable for acidic effluent remain limited. Herein, we report an ethanol-assisted solvothermal strategy to tailor surface hydroxyl speciation on amorphous ZrO2. The optimized material reached adsorption equilibrium within 10 min and showed an adsorption capacity of 110.6 mg/g. In fixed-bed operation using acidic sulfate-containing feed, the dynamic capacity was 82.9 mg/g, and the 50% breakthrough occurred at 3400 bed volumes. The terminal hydroxyl fraction increased from 15.2% to 59.8% as the ethanol/water volume ratio increased from 3:1 to 10:1. Ethanol addition is proposed to reduce hydrogen-bond-network connectivity, thereby suppressing condensation into bridging-hydroxyl. Terminal-hydroxyl abundance, estimated by thermogravimetric mass spectrometry (TG-MS) combined with solid-state1H magic-angle-spinning nuclear magnetic resonance (1H MAS NMR) showed a positive trend with adsorption capacity. Site-blocking tests established an 87% terminal-hydroxyl-associated contribution to sulfate uptake. Zeta-potential and electrostatic-potential analyses supported preferential sulfate approach to terminal-hydroxyl-rich positive domains, whereas density functional theory (DFT) identified dual-site binding to terminal hydroxyls on separate Zr centers as the most stable configuration. These results identify regulation of hydroxyl speciation as a dopant-free strategy for sulfate polishing after peroxymonosulfate oxidation.
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123407
·
IF 7.5
Inam Ullah,Syed Musab Ahmed,Hao Lou,Zeeshan Abbasi,Zubair Ahmad,Muhammad Usman,Wenlong Wu,Zhandong Wang
The practical application of CO 2 methanation is often hindered by water-induced limitations. Conventional sorbent-assisted catalyst systems employ adsorbents merely as passive water scavengers, neglecting their potential role in reaction kinetics. Herein, we report a layer-by-layer catalyst-zeolite architecture that overcomes these limitations by synergistically promoting low-temperature CO 2 activation while enabling effective in-situ water management. This ordered configuration maximizes interfacial contact, allowing the hydrophilic NaA zeolite to actively capture and activate CO 2 at reduced temperatures while continuously removing the water by-product from the Ni/ZrO 2 surface. Consequently, the system achieves 81% CO 2 conversion with 100% CH 4 selectivity at 200 ℃. This work demonstrates that integrating Ni/ZrO 2 catalyst with a functional NaA zeolite provides an energy-efficient and robust strategy for sustained low-temperature CO 2 methanation.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 34
·18159-18168
·
IF 3.9
Ren Xuping,Zhao Zijiang,Long Yanhui,Zhang Wenjun,Wang Jun,Zhang Hao
Developing efficient catalysts for
CO 2 hydrogenation
to methanol remains a challenge due to the inherent trade-off between
activity, selectivity, and cost. Herein, a series of metal-promoted
Cu catalysts (Zr, Zn, Ga) were synthesized via a ligand-modulated
oxalate coprecipitation strategy using malachite-derived CuO as the
precursor, enabling a low-cost and sustainable catalyst design. Among
these, the ZrO 2 /Cu catalyst (Zr/Cu = 14:86) exhibits the
optimal performance, delivering a CO 2 conversion of 13%
and a methanol space-time yield (STY) of 280.1 g MeOH ·kg cat –1 ·h –1 at 280 ° C
and 3.0 MPa, together with excellent long-term stability. Characterization
results suggest that highly dispersed Zr species effectively suppress
Cu particle agglomeration while generating abundant surface oxygen
vacancies (O V , 43.5%). Mechanistic studies indicate that
Zr incorporation induces strong electronic metal–support interactions
(EMSI), leading to the formation of electron-rich Cu 0 /Cu + sites. These sites act cooperatively with O V ,
where the former facilitates H 2 dissociation and the latter
promotes CO 2 adsorption and activation. Such synergistic
effects favor the formate-mediated pathway while suppressing the competing
reverse water–gas shift reaction. This work not only demonstrates
a high-performance catalyst derived from natural minerals but also
provides insights into the atomic-level synergy between electron-rich
metal sites and surface defects, offering a viable strategy for the
rational design of efficient catalysts for CO 2 hydrogenation.
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高影响因子
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