Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yuxi Li,Zhuwei Zhu,Ximai Zhang,Fengkuan Ma,Qiaohong Zhang,Chen Chen,Hongying Lü
Selective oxidation of hydrocarbon under mild conditions is one of scientific challenges. In the present work, facet effect was utilized to design an efficient catalytic system of N -hydroxyphthalimide (NHPI) and specific α-Fe 2 O 3 with different preferential crystal facets. Higher ratio of crystalline facet {110}/{104} was identified as a key factor to facilitate the interaction between NHPI molecules and surface of α-Fe 2 O 3 , then realize a higher catalytic activity. Being photo-irradiated with the blue light (455 nm, 3 W) at ambient temperature for 4 h, conversion of 92.2% was obtained for the selective oxidation of ethylbenzene with α-Fe 2 O 3 -T100 that owns more preferential crystalline facets {110}, which is about 1.8 times as high as that (51.0%) being obtained with commercial C-α-Fe 2 O 3 -{104}. The present efficient catalytic system also exhibited good universality for the selective oxidation of a series of other hydrocarbons.
研究领域:
催化
·
材料科学
·
化学反应工程
·
物理化学
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产品关联
DOI
高影响因子
Molecular Catalysis
·
2022
·
IF 5.089
Yuanfang Shen,Liangchen Chen,Luping Zhang,Weihang Han,Yurong Chang,Hui Zheng
Photocatalytic conversion of nitrogen to ammonium is a carbon neutralization reaction. Synthesizing suitably modified semiconductor substrate photocatalysts for nitrogen fixation is a challenge and hot topics in recent decades. This research aims to synthesize a photocatalyst with abundant oxygen vacancies and explore its nitrogen fixation performance. Herein, Cobalt oxide@Schiff was synthesized through organic synthesis and hydrothermal method. Its structure and nitrogen fixation properties were explored. It was found that Cobalt oxide@Schiff has an all-day nitrogen fixation performance from air directly, and the rate could reach 2880 μg/(L•h) under sunlight or day and night at normal temperature and pressure. The advantage of this photocatalyst is that the large π bond of the Schiff base ligand could significantly improve the light-trapping ability and the synergistic effect of nitrogen fixation, which provides a new pathway for nitrogen fixation day and night under room temperature and atmosphere pressure.
研究领域:
材料科学
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环境科学
·
化学工程
·
纳米技术
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DOI
高影响因子
SCIENTIA HORTICULTURAE
·
2019
·
IF 1.961
Yonghong Ge,Junhu Zhang,Canying Li,Wenjun Xue,Shiyu Zhang,Jingyi Lv
The purpose of this study was to evaluate the effects of trisodium phosphate (TSP) (0.5 g L −1 ) treatment on softening of harvested jujube fruit during storage at 20 ± 2 °C with a relative humidity of 50–55 %. The results showed that jujube fruit treated with TSP showed a higher firmness. The activity of pectin methylesteras, polygalacturonase, cellulase and β-glucosidase was also suppressed by TSP treatment. The results demonstrated that the content of water soluble pectin in jujube fruit treated with TSP was lower than in the control (dipped in distilled water) during storage. TSP treated fruits had higher pectin content than control fruits. The results of atomic force microscopy showed that water soluble pectin structure treated by TSP was denser compared with the control. Taken together, these results demonstrated that TSP could delay softening of jujube fruit by regulating cell wall-degrading enzymes activities and controlling the pectin substances.
研究领域:
食品科学
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植物生理学
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产品关联
DOI
高影响因子
STAR Protocols
·
2023
·
IF 0
Shuchao Jiang,Jikai Sun,Guoqing Ren,Weiqiao Deng
Summary CO 2 capture and utilization into liquid fuels and high-added-value chemicals has been regarded as an attractive strategy to mitigate excessive carbon emissions. Here, we present a protocol to capture and convert CO 2 into pure formic acid (HCOOH) solution and solid fertilizer (NH 4 H 2 PO 4 ). We describe steps for synthesis of an IRMOF3-derived carbon-supported PdAu heterogeneous catalyst (PdAu/CN-NH 2 ), which can efficiently catalyze (NH 4 ) 2 CO 3 -captured CO 2 into formate under ambient conditions. For complete details on the use and execution of this protocol, please refer to Jiang et al. (2023). 1
研究领域:
环境科学
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化学工程
✓ 已验证
DOI
PubMed
ACS Omega
·
2019
·
IF 2.584
Bo Lin,Aiyong Wang,Yanglong Guo,Yuanqing Ding,Yun Guo,Li Wang,Wangcheng Zhan,Feng Gao
Co-, Ni-, and Zn-containing MOFs are prepared and then pyrolyzed to generate materials for ambient temperature NO adsorption. Materials containing Co are much more efficient for NO adsorption than those containing Ni and Zn; therefore, Co is identified as the active phase. The best performing material studied here achieves 100% low concentration (10 ppm) NO adsorption for more than 15 h under a weight hourly space velocity of 120 000 mL g–1 h–1. Powder X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared, and Raman spectroscopies, along with scanning electron microscopy and TEM, are used to probe the physicochemical properties of the materials, particularly the Co active phase, and chemistries involved in NO adsorption–desorption. NO adsorbs on oxygen-covered Co nanoparticle surfaces in the form of nitrates and desorbs as NO at higher temperatures as a result of surface nitrate decomposition. NO storage capacity decreases gradually upon repeated NO adsorption–desorption cycles, likely because of Co3O4 formation during these processes.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
Journal of Coatings Technology and Research
·
2015
·Vol. 13
·期 1
·73-80
·
IF 1.298
Pi Pihui,Chen Xi,Wen Xiufang,Xu Shouping,Cheng Jiang
An ambient-temperature self-crosslinkable acrylic resin was synthesized by solution polymerization, with ethanol as solvent; butyl acrylate (BA), methyl methacrylate (MMA), acrylic acid (AA), hydroxypropyl acrylate (HPA), and diacetone acrylamide (DAAM) as monomers; and adipic acid dihydrazide (ADH) as crosslinker. The resin could be diluted by water. The resin was used for PE film ink, and its curing behavior and film properties were studied. FTIR and DSC results indicated that the reaction between ketone carbonyl and hydrazine groups could occur during film curing at ambient temperature and improved glass transition temperature ( T
g ) of the film by 12.67°C. Crosslinking density of film increased with DAAM content and m (ADH)/ m (DAAM) ratio. Adhesion on PE film increased with DAAM content, while it first increased then decreased with m (ADH)/ m (DAAM) ratio. Water absorption of film decreased with DAAM content, while it first decreased then increased with m (ADH)/ m (DAAM) ratio. The optimal m (ADH)/ m (DAAM) ratio and DAAM content in this experiment are 0.8:1 and 2%, respectively. Compared with ambient-temperature self-crosslinkable emulsion, this water-soluble resin shows film not only with the same adhesion, but also without any shrinkage void, indicating better film-forming ability on PE film. The ambient-temperature self-crosslinkable water-soluble acrylic resin shows excellent potential application in water-based ink for PE film because of good film-forming ability and adhesion and low water absorption.
研究领域:
材料科学
·
印刷技术
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Yage Li,Shuaibing Wu,Feng Liang,Gongye Lv,Yu Tian,Haijun Zhang,Yong Liu,Guoqi Liu
Rod-like h-BN with an average diameter of 2 µm was synthesized at a relatively low temperature of 1200 °C through a catalytic pyrolysis precursor strategy using boric acid and melamine as starting materials, and Co(SO 3 NH 2 ) 2 ·4 H 2 O as a catalyst precursor. Subsequently, novel low-carbon Al 2 O 3 -C refractories were prepared via a replacement of the graphite with the as-synthesized rod-like h-BN. When 1 wt% h-BN rods were added to replace graphite, after 3 h coking at 1400 °C, the cold modulus of rupture, cold compressive strength , oxidation resistance , and thermal shock resistance of the specimen were increased by 16.4%, 24.8%, 31.2%, and 52.2%, respectively, compared with these of the control specimen. Moreover, the introduction of h-BN rods in the matrix enhanced the non-wetting ability of the refractory with molten slag, thus the rod-like h-BN modified low carbon refractory presented better slag corrosion resistance with reference to the specimen without h-BN rods.
研究领域:
材料科学
·
耐火材料
·
高温性能
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hailong Li,Weizhen He,Wei Zheng,Zequn Yang,Yingchao Hu,Wenqi Qu
The limited adsorption capacity of commercialized sorbents towards elemental mercury (Hg 0 ) remains a major challenge facing their extensive applications under the regulation of the Minamata Convention. Metal selenides were recently found to be promising alternatives to commercialized sorbents for capturing Hg 0 from industrial flue gas due to the high affinity between Hg 0 and selenide. In metal selenides, under-coordinated selenide sites play critical roles in oxidation and subsequent immobilization of Hg 0 , while there is still no simple way to increase the abundance of under-coordinated selenide in metal selenides under ambient conditions. In this work, an effective and facile precipitation pathway was proposed to prepare amorphous cobalt selenide (a-CoSe 2 ) with under-coordinated selenide enriched surface under ambient conditions. The a-CoSe 2 as synthesized achieved outstanding Hg 0 uptake capacity and adsorption rate (534.2 mg g −1 and 483.1 μg g −1 min −1 ), far surpassing those of crystalline cobalt selenide (c-CoSe 2 ) by magnitudes. The characteristic results demonstrated that the under-coordinated selenide enriched nature of a-CoSe 2 is the principal reason causing the significant performance improvement, which is fully in line with our hypothesis and purpose. This work not only proposes a potential sorbent for efficient Hg 0 sequestration from industrial flue gas but also inspires the further development of synthesis strategies for amorphous materials.
研究领域:
环境科学
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材料科学
·
化学工程
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DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2019
·
IF 3.261
Yuan Liao,Jiannan Lin,Baihua Cui,Gang Xie,Shi Hu
Photocatalytic nitrogen fixation has been burgeoning since the 20th century because the conventional Haber–Bosch process is quite energy-intensive, so other sustainable alternatives are highly required. This work uses a facile way to synthesize ultrasmall metal ruthenium on TiO 2 (P25) for photocatalytic nitrogen fixation at ambient temperature and pressure. The metal ruthenium is 2–3 nm in size and evenly dispersed over TiO 2 (P25). Both Indophenol method and ion chromatography are used to detect the ammonia yield, and possible mechanism is also proposed.
研究领域:
化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2017
·
IF 0
Hao Zhong,Liu Zhang Ouyang,Jian Shan Ye,Jiang Wen Liu,Hui Wang,Xiang Dong Yao,Min Zhu
The hydrolysis of NaBH 4 offers significant advantages for hydrogen storage in fuel cells, whereby suffers from the irreversibility . Thus, a simple and low cost method for NaBH 4 regeneration from its hydrolysis byproduct is crucial. Herein, we describe a single step method for NaBH 4 regeneration, which combines both hydrogen production and storage in the one step. In the process, a mixture of magnesium silicide and dihydrate sodium metaborate is reacted via ball milling under ambient conditions without the requirements of additional hydrogen sources . The hydrogen only comes from the splitting of H 2 O in the NaBO 2 ·2H 2 O that is a direct byproduct of NaBH 4 hydrolysis. The purified product demonstrates the same physicochemical properties as commercial NaBH 4 . Yields for NaBH 4 regeneration approaching 80% are achieved using this method. Mechanism study indicates that the high yield is likely to be beneficial from the formation of the Mg-O-Si-H conjugated structure. NaBH 4 regeneration using this process demonstrates a 30-fold reduction in cost over a previous study that used MgH 2 as the reduction agent.
研究领域:
化学
·
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Shuang-Zhu Li,Hong Cao,Wei-Wei Liu,Lu Bai,Yu Wang,Jie Yang,Wei Yang
Distinct from conventional passive radiative coolers, newly developed thermally insulating radiative coolers demonstrating superior thermal regulation performance by additionally suppressing heat conduction from the hot environment into the internal house have emerged as an enticing solution for reducing the building energy consumption. Although great efforts are made to optimize the thermal regulation performance of insulating coolers, the strategies developed almost all involve sophisticated fabrication processes concerning supercritical drying or freeze-drying, and balancing excellent radiative cooling and insulation functionalities with scalable production continues to pose challenges. Herein, a novel phase-change-enhanced thermal insulation cooler is fabricated using a facile ambient drying technique. Benefiting from the latent heat storage and release characteristics of the phase change materials (PCMs), the resulting composites present additional advantages for thermal regulation by effectively delaying heat propagation, solving the issue of nighttime supercooling induced by the high infrared emissivity of the state-of-the-art radiative coolers. In field tests, the cooler achieves a maximum temperature drop of ≈19 °C in the daytime and a temperature rise of ≈2.6 °C at night, effectively reducing the indoor temperature variations. This work provides insight into the scalable fabrication of a phase-change-enhanced insulating cooler with all-day temperature-adaptive thermal regulation capacity.
研究领域:
材料科学
·
热工工程
·
建筑节能
·
纳米技术
·
应用物理学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-14
·
IF 17.694
Zhou Liang,Lei Qi,Guo Jimin,Gao Yuanyuan,Shi Jianjun,Yu Hong,Yin Wenxiang,Cao Jiangfan,Xiao Botao,Andreo Jacopo,Ettlinger Romy,Jeffrey Brinker C.,Wuttke Stefan,Zhu Wei
Deoxyribonucleic acid (DNA) is the blueprint of life, and cost-effective methods for its long-term storage could have many potential benefits to society. Here we present the method of in situ cryosilicification of whole blood cells, which allows long-term preservation of DNA. Importantly, our straightforward approach is inexpensive, reliable, and yields cryosilicified samples that fulfill the essential criteria for safe, long-term DNA preservation, namely robustness against external stressors, such as radical oxygen species or ultraviolet radiation, and long-term stability in humid conditions at elevated temperatures. Our approach could enable the room temperature storage of genomic information in book-size format for more than one thousand years (thermally equivalent), costing only 0.5 $/person. Additionally, our demonstration of 3D-printed DNA banking artefacts, could potentially allow ‘artificial fossilization’.
研究领域:
生物技术
·
分子生物学
·
基因组学
·
材料科学
✓ 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）