CELLULOSE
·
2020
·Vol. 27
·期 6
·3427-3442
·
IF 4.21
Liu Xiao-hui,Ding Chen,Peng Bo,Ren Yuan-lin,Cheng Bo-wen,Lin Sheng-gen,He Ju,Su Xiao-wei
In this paper, a simple and facile polyol sorbitol was employed to design and synthesize a novel flame retardant containing phosphorus and nitrogen by the reaction of sorbitol with phosphoric acid and urea. The obtained sorbitol-based flame retardant was then used to treat lyocell fibers by a pad-dry-cure procedure. Formaldehyde and other harmful substances were not used during the preparation of flame retardant and modified fibers. For this strategy, only water is used as solvent, and the conditions are mild, safe and environmentally friendly. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analyses show that the sorbitol-based flame retardant was successfully grafted onto lyocell fibers. Scanning electron microscopy analyses show that the surface morphology of the treated fibers remained unchanged. Thermogravimetric analyses imply that the residue of the treated fibers increases considerably. Vertical combustion and limit oxygen index results indicate that the treated fibers possess excellent flame retardant and durable properties. Based on the results of pyrolysis gas chromatography–mass spectrometry, thermogravimetric-infrared and Raman spectroscopy, the flame retardant operates in condensed phase and gas phase during burning of treated fibers.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2015
·
IF 2.587
Hangcheng Zhu,Yong Zhang,Xiaogang Yang,Hongyi Liu,Xiumei Zhang,Juming Yao
A simple one-step and homogeneous synthesis method of dicarboxyl cellulose for the flocculant application is developed via Schiff base route using the cellulose from Phyllostachys heterocycla. The bamboo pulp cellulose is dissolved in NaOH–urea solution and oxidized as dialdehyde cellulose by NaIO4, which is continuously reacted with the residual urea and NaOH in the original reaction system to synthesize dicarboxyl cellulose. This one-step method greatly reduces the complexity and heterogeneity of the traditional two-step synthesis procedure, and avoids greatly the environmental pollution caused by the cellulose solvent. The dicarboxyl cellulose is characterized by Fourier transform infrared spectroscopy and X-ray diffraction spectroscopy, which exhibits an excellent coagulation–flocculation capability to kaolin suspension with a turbidity removal of 99.5%.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2016
·
IF 4.959
Yan-Qin Zhang,Xiao-Chen Wei,Jia-Jie Long
The coloration textile in supercritical carbon dioxide with water free has become more and more important and meaningful recently due to its Ecofriendly and environmentally friendly advantages. However, the lacks of special dyes for this waterless coloration technology are limiting its application in industry, especially for the shortage of disperse reactive dyes for natural fibers . Therefore, in this work, three special disperse reactive dyes involving diazo parent structures and reactive groups of dichlorotriazine were successfully synthesized and then applied at the first time for waterless coloration of wool fabric with supercritical carbon dioxide. Moreover, a safer and Ecofriendly method was developed for synthesis of the disperse reactive dyes by diazotizing of the alkalescent arylamine of 2-chloro-4-nitroaniline in the presence of a safer and milder acid of hydrochloric acid rather than concentrated sulfuric acid , in an environmentally friendly media of polyethylene glycol 200 mixed with water. The obtained dyes were successfully characterized and confirmed from chemical structure and color characteristics by Fourier transform infrared spectra , nuclear magnetic resonance hydrogen spectroscopy, liquid chromatography-mass spectrometry and ultraviolet–visible absorption spectroscopy . Furthermore, the application results reveal that good coloration behaviors and characteristics, commercially satisfactory leveling property and color fastness were achieved with the synthesized disperse reactive dyes on wool fabric in supercritical carbon dioxide media. All results indicate that the supposed method is essentially useful for developing special disperse reactive dyes with safe and Ecofriendly characteristics, and the obtained disperse reactive dyes are potentially hopeful for waterless coloration of wool with supercritical carbon dioxide media instead of conventional wet-chemical processes for cleaner production in wool industry.
研究领域:
纺织化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
TETRAHEDRON
·
2016
·
IF 2.645
Dong-Qing Zheng,Yu Jing,Bing-Ying Zheng,Yun-Fei Ye,Sheng Xu,Wei-Sheng Tian,Hai-Yan Ma,Kai Ding
The conventional etherification uses toxic or hardly degradable alkylating agents . An eco-friendly tandem etherification/aromatization is presented to prepare estrone 3-secondary ethers from easily available dienone 1 . Three marketed 3-etherified estrogen drugs were synthesized with the method from commercial available starting material.
研究领域:
有机化学
·
药物化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yu Zhuang,Liang Wang,Chenghao Cui,Yeying Cui,Dezhi Yang,Kangning Gao,Zhiqian Hou,Yanan Yang,Tao Zhang
Solid-phase sintering (SS) is a widely used method for synthesizing oxides due to its simplicity and scalability. However, it typically relies on organic liquids as grinding media, resulting in higher costs and environmental pollution. This study proposes a boiling water-assisted solid-phase sintering (BWA-SS) method for synthesizing oxide electrolyte materials, in which water is used as the grinding medium and the precursor slurry is directly sintered, providing an eco-friendly process. More importantly, finite element analysis shows that this method prevents the uneven sedimentation of raw material particles by secondary dispersion caused by the vapor mass flux gradient in boiling water. Using this organic-free method, the pure Li7La3Zr2O12 (LLZO) solid electrolyte is successfully synthesized, achieving a high ionic conductivity (σi) of 6.22 × 10–4 S/cm, which is comparable to that of LLZO solid electrolyte material produced by the conventional SS method. The assembled Li/LLZO/Li symmetrical cell exhibits stable cycling for 3000 h at a current density of 0.1 mA/cm2. This method has also been successfully extended to the synthesis of other solid electrolytes (LiTa2PO8, LTPO) and cathode materials (LiNi0.8Co0.1Mn0.1O2, NCM811), demonstrating potential for clean preparation of various oxide materials.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Fan Yang,Xing He,Chunxia Wang,Yan Cao,Yun Li,Linan Yan,Mengmeng Liu,Mingzhu Lv,Yanan Yang,Xu Zhao,Yongfeng Li
Eco-friendly phosphorus-doped carbon quantum dots (P-CQDs) have been successfully synthesized by facial hydrothermal treatment of phytic acid (PA) and sodium citrate. PA is selected because of its hexatomic ring structure with firm C-P bonds, abundant phosphate group and completely natural. In this case, the phosphorus content of the as synthesized P-CQDs achieves 8.52 wt.%. The P-CQDs show a narrow size distribution in the range of 2.5–4.5 nm and exhibit excellent sensitivity to Cu 2+ with an ultra-low detection limit of 1 nM. Furthermore, the P-CQDs have been applied in water sample to detect Cu 2+ , and the results are highly consistent with the data measured by inductively coupled plasma optical emission spectrometry. Therefore, the as synthesized P-CQDs display a great potential for applications in the area of Cu 2+ ion detection.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SUPERCRITICAL FLUIDS
·
2025
·
IF 4.4
Jinglong Li,Meiyu Zhen,Yutao Feng,Ziyi Lu,Chang Wang,Xiaoqing Xiong
Alkyl-chain anthraquinone dyes have promising performance but face application constraints due to hydrophobicity and pollution in conventional water-based dyeing. This study developed an eco-friendly synthesis and dyeing approach. Six dyes (AQ-5 to AQ-7, CAQ-5 to CAQ-7) were synthesized in supercritical carbon dioxide (scCO₂) via reactions of 1-chloroanthraquinone/1,5-dichloroanthraquinone with n -alkylamines. They showed good light absorption and thermal stability (5% weight loss at 245–298°C, suitable for scCO₂ dyeing). Meanwhile, scCO₂ dyeing regularity was revealed through the synergistic regulation of multiple parameters. Optimal scCO₂ dyeing conditions for polyester were determined: 16 MPa, 130°C, 90 min for AQ-5–AQ-7; the optimal dyeing conditions for CAQ-5–CAQ-7 were determined and these were included in the range of 120-135 °C, 16 MPa, 70-100 min. Dyed fabrics had uniform fixation with excellent washing, dry, and wet rubbing over than grade 4, and good light fastness. This work establishes a green scCO₂ system, overcoming traditional limitations, and provides a theoretical basis for eco-friendly dyes/technologies.
研究领域:
纺织化学
·
绿色化学
·
染料技术
·
可持续材料
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2016
·
IF 4.758
Lihong Shi,Bo Zhao,Xiaofeng Li,Guomei Zhang,Yan Zhang,Chuan Dong,Shaomin Shuang
We report an eco-friendly strategy for fabrication of nitrogen-doped carbon nanodots (N-CDs) and demonstrate their applications for multicolor cell imaging, patterning, and biosensing. N-CDs have been synthesized using wool as raw material via pyrolysis and microwave treatment, providing a green way for the production of N-CDs without the use of toxic/expensive solvents and starting materials. The prepared N-CDs exhibit exceptional advantages including high fluorescent quantum yield (22.5%), excellent biocompatibility, low toxicity, and satisfactory chemical stability. Depending on these superior properties, the N-CDs have been applied in multicolor bioimaging, patterning, and biosensing. Imaging of living cells has been observed with high resolution using N-CDs as a probe, which validates their use in imaging applications and their multicolor property in the living cell system. Additionally, the obtained N-CDs have been used as fluorescent inks for drawing luminescent patterns, showing favorable application in anti-counterfeit and optoelectronic dimensions. Most strikingly, the as-prepared N-CDs could visualize Fe 3+ fluctuations in living cells with negligible autofluorescence based on their high sensitivity and selectivity detection for Fe 3+ ions with a linear range of 0.1–10 μM and a detection limit of 10 nM.
研究领域:
材料科学
·
纳米技术
·
生物传感器
·
细胞生物学
·
光电
✓ 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）