Catalysts
·
2025
·Vol. 15
·期 3
·274
·
IF 4
Xinglei Zhao,Jiamin Ding,Xin Xiao,Chengbo Zhang,Shengyong Lu,Zhanheng Zhu,Sheng Sun
Fly ash produced by Municipal Solid Waste Incineration (MSWI) contains significant quantities of dioxins, posing a major challenge for safe disposal. Compared to other high-temperature disposal methods, low-temperature pyrolysis (<500 °C) can efficiently degrade dioxins in fly ash at relatively low temperatures. To better understand the effects of water-washing and catalysts on dioxin decomposition during low-temperature pyrolysis, this study investigates the impact of water-washing and three different catalysts (V2O5-WO3/TiO2, Fe/C, and CaO) on the decomposition of dioxins in washed fly ash (WFA). The results indicate that, despite the fact that water-washing pretreatment causes dioxin enrichment in WFA, the toxic equivalent quantity (TEQ) of dioxins within WFA remains lower at the identical pyrolysis temperature when contrasted with that in raw fly ash (RFA). Low-temperature pyrolysis carried out at 250 °C is capable of degrading 99.3% of the dioxins present in water-washed fly ash, achieving a significantly better performance compared to the raw fly ash, which has a degradation efficiency of merely 80%. Nevertheless, when the temperature is set at 210 °C, the degradation efficiency of the WFA turns out to be relatively low, only reaching 29%. The addition of catalysts remarkably promoted dioxin degradation at 210 °C. Among them, CaO exhibited the most outstanding performance, achieving a degradation efficiency as high as 94.8%. It should be emphasized that the catalyst ratio plays a pivotal role in the degradation process. Specifically, the proportion of CaO should not to be less than 10 wt.%.
研究领域:
环境科学
·
废物处理
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Energy
·
2020
·
IF 5.604
X. Huang,J. Duan,J. He,H. Shi,Y. Li,Y. Zhang,D. Wang,P. Dong,Y. Zhang
Rapid moisture and carbon dioxide uptake in Ni-rich materials deteriorates their processing properties, thermal stability and electrochemical performance. Water washing is a widely used method to efficiently remove Li-based residues from these materials. In this paper, a detailed investigation of ion behavior during washing was carried out for LiNi 0.815 Co 0.15 Al 0.035 O 2 (NCA). Multiple characterizations including inductive coupled plasma atomic emission spectrometry (ICP-AES), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) depth profiles show that certain amount of Li + and Al 3+ are lost from the near-surface of NCA during washing process, which is one of the key issues that lead washed samples suffer from poor electrochemical performance and structural stability. The excess LiOH·H 2 O ratio in mixing and high temperature sintering during NCA synthesis has a remarkable effect on the Al 3+ dissolution ratio, and the loss rate of Al 3+ is as high as 23.14% for lithium excess ratio up to 10 at.%. Characterization analyses of the electrochemical performance, structure, morphology and elemental chemical state of the samples demonstrate that the dissolution of Li + and Al 3+ from NCA deteriorates the cyclic performance, structural stability and thermal stability.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2021
·Vol. 11
·期 1
·1-12
·
IF 4.38
Yang Chenghu,Miao Shichao,Li Tiejun
The influences of water washing treatment on the properties of Ulva prolifera -derived biochar ( U.P- biochar) and its sorption characteristics of ofloxacin (OFL) were investigated. The results showed that the water washing treatment significantly changed the physiochemical structures of U.P- biochars, and improved the sorption capacity of OFL. The sorption capacity of OFL by U.P -biochar was closely dependent on pyrolysis temperature (200–600 °C) and equilibrium solution pH (3–11). Different sorption mechanisms (e.g. cation exchange, electrostatic attraction, H-bond and cationic–π and π–π interactions) were dominant for specific U.P- biochars under various pH regions (acidic, neutral and alkaline). Moreover, the unwashed and washed U.P- biochars prepared at 200 °C (BC200 and BCW200) showed a higher sorption capacity of OFL at pH = 7. The two-compartment first-order model provided an appropriate description of the sorption kinetics of OFL by BC200 and BCW200 ( R 2 > 0.98), which revealed that the contribution ratios between the fast and slow sorption compartments ( f fast /f slow , 1.55 for BC200 and 1.25 for BCW200) reduced after water washing treatment of U.P -biochar. The values of n for the Freundlich model were less than 1, which demonstrated that the sorption of OFL by BC200 and BCW200 was favourable and nonlinear. Also, the sorption of OFL by BC200 and BCW200 increased with an increase in solution temperature and the sorption process was spontaneous and endothermic. This study provides valuable information for being a primary consideration in the production and application of U.P- biochar.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Hao Sun,Zhi Ying,Xinyue Chen,Xiaoyuan Zheng,Binlin Dou,Guomin Cui
Substituting the oxygen evolution reaction in water electrolysis with the thermodynamically more favorable biochar oxidation reaction (BOR) constitutes biochar-assisted water electrolysis (BAWE), presenting a promising strategy for energy-efficient hydrogen production and high-value utilization biochar. Nevertheless, the BOR suffers from the sluggish kinetics and ambiguous selectivity with respect to ungraded biochar. Herein, we demonstrate the effects of elution treatment on pyrolytic lignocellulosic biochar concerning BOR kinetics and hydrogen production, as well as the efficiency of electrooxidized biochar in Cr(VI) removal. The original lignocellulosic biochar washed by alkali, acid, and water exhibited an improved BOR kinetics. Notably, the moderate water washing favored the removal of ash and soluble substances, thereby exposing more easily oxidizable functional groups such as C–OH and COOH, which substantially enhanced BOR kinetics. The water-washed biochar-assisted water electrolysis achieved a Faradaic efficiency of 99.5% for hydrogen production at 50 mA cm −2 , necessitating lower cell voltages compared to unwashed biochar. Water elution pretreatment also promoted the sufficient oxidation of biochar during electrolysis, with enriched oxygen-containing functional groups like C–O contributing to an increase in Cr(Ⅵ) removal rate from 20.81% to 65.10%. This work offers strategies for achieving efficient biochar upgrading and hydrogen production in the BAWE process.
研究领域:
能源与环境科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Yanling Lin,Zhennan Wu,Enrou Mei,Jiapeng Yang,Ye He,Zhenbo Xu,Xiaojuan Liang,Xingen Hu,Ruowang Liu,Weidong Xiang
Perovskite quantum dots (QDs) have become the star material for liquid crystal display (LCD). However, instability affects its practical application. Herein, CsPbBrI 2 quantum dots (CsPbBrI 2 QDs) with high quantum efficiency have been successfully precipitated in situ by adding CaO to the Li-Al-Si glass substrate. The photoluminescence quantum yield (PLQY) was adjusted from 64.5 % to 87.5 %. At the same time, we adopted a new strategy of blue light irradiation-stirred water washing. When blue light irradiation and stirred water washing interact synergistically, the naked CsPbBrI 2 QDs detached from the glass surface, while smaller CsPbBrI 2 QDs continued to grow. This process successfully resulted in CsPbBrI 2 QDs with high luminescence intensity and high stability. Moreover, when exposed to 60 °C, 90 % relative humidity (RH), and 2000 nit blue light for 240 hours (h), the treated sample could retain 91.1 % of the original emission intensity. The color gamut of the prepared CsPbBrI 2 @CsPbBr 3 @glass@polystyrene (PS) light conversion film covered 122 % of the NTSC 1953 standard and 90 % of the Rec. 2020 standard. It provided great value for the commercialization of QDs in backlight display applications.
研究领域:
材料科学
·
显示技术
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Zhu Liu,Shoulu Yang,Zhongwei Wang,Ning Ji,Yan Qing
To ensure the long-term fire-retardant (FR) and anti-mildew (AM) of bamboo materials when employed in outdoor settings susceptible to rainfall exposure, high durability is essential. In this study, we achieved water-leaching resistance of FR and AM bamboo through the in situ synthesis of phosphotungstic acid (PW) and silver nitrate (AG) via vacuum-pressure impregnation. The successful synthesis of the nanospheres within the bamboo (referred to as PWAG-B) was confirmed by TEM, FTIR, and XPS. These nanospheres remained intact within the bamboo cell wall after being subjected to a leaching test , with only a negligible mass loss of 0.88 % and virtually no traces of Ag and W in the leachate for PWAG-B 1 . Furthermore, the treated bamboo exhibited superior AM properties, with complete resistance against two types of mildew , namely Botryodiplodia theobromae and Alternaria alternate , as well as stain fungi including Aspergillus niger and Penicillum citrinum . Notably, the treated bamboo displayed reduced thermal and smoke parameters in comparison to untreated bamboo, along with a delayed ignition time . This long-term AM and FR bamboo has the potential for the development of eco-friendly outdoor building materials .
研究领域:
材料科学
·
林学
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2025
·Vol. 18
·期 1
·42
·
IF 36.3
Yang Fengjin,Wang Zhifei,Zhang Wei,Wang Sai,Liu Yi-Tao,Wang Fei,Surmenev Roman A.,Yu Jianyong,Zhang Shichao,Ding Bin
A superelastic and washable sponge based on biomimetic spring-like helical micro/nanofibers is directly fabricated by multiple-jet electrospinning technology.
The resulting sponge exhibits both lightweight (low density of 7.1 mg cm –3 ) and robust mechanical property (large tensile strain up to 200%).
The sponge also shows efficient thermal insulation performance with low thermal conductivity (24.85 mW m –1 K –1 ), and remains structural stability even after cyclic washing, making it a promising candidate for personal protection in cold environments.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
·
组织工程
·
高分子科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Lili Wang,Nasha Zeng,Jinqi Ye,Keying Zheng,Junyi Lu,Minghua Wu,Huijun Li
Disperse-dye wash-free digital inkjet dyeing, which combines digital jetting technology with disperse-dye wash-free dyeing technology, is a simple process that reduces carbon and pollutant emissions, conserves dyes and chemical materials and delivers a fast response. In this study, based on the principle of solubility parameter, a series of wash-free digital inkjet-dyeing waterborne polyurethane (WPU) which directionally delivered the disperse dyes, were prepared by employing isophorone diisocyanate (IPDI) as the hard monomer, polybutylene adipate (PBA) as the soft segment and polydimethylsiloxane (PDMS) as the modified soft segment. The results showed that the WPU film prepared from 6 wt% PDMS and 42 wt% IPDI, exhibited the highest water resistance, mechanical and adhesive properties, and directional dye delivery among the films. The optimal dosage of WPU in the wash-free ink was 6 wt%. Compared with the pure dye ink, the front colour yield of the inkjet-dyed fabrics with WPU wash-free ink reached 16.08 and improved by 18.1%. The colour fastness to dry/wet rubbing achieved grade 4-5 and grade 3-4, respectively. It demonstrated the good prospects of WPU in wash-free dyeing application. In particular, the approach promises inkjet-dyed polyester fabrics of high surface colour and fastness under no reduction-cleaning/washing procedures.
研究领域:
材料科学
·
纺织工程
·
染整技术
✓ 已验证
产品关联
DOI
高影响因子
TEXTILE RESEARCH JOURNAL
·
2018
·
IF 1.54
Lili Wang,Songsong Cui,Huagang Ni,Minghua Wu
The color performances of disperse dye washing-free printing have tight connections with the solubility parameters of polymer binders. Based on the solubility parameter theory, ethylhexyl acrylate (EHA) and methyl methacrylate (MMA) were selected as monomers. A series of polyacrylate (PA) binders were prepared by mini-emulsion polymerization. The effects of the mixed emulsifiers and the EHA-MMA mass ratios on PA properties were investigated. Results showed that PA emulsion remained more stable, the particle size and distribution were smaller, and the film possessed better tensile performances at the mass ratio of sodium lauryl sulfate (SDS):fatty alcohol polyoxyethylene ether (O-10):propylene oxide propyl alkyl phenyl polyether ammonium sulfate (V-20S) of 1.5:1:1 at 6 wt %. The larger solubility parameter differences between monomers and disperse dyes could improve color yield of the washing-free printed polyester fabric to a greater extent. At the mass ratio of EHA and MMA of 11:9 (55 wt % EHA), PA achieved the best mechanical and washing-free printing properties and surpassed the commercial binders.
研究领域:
材料科学
·
纺织工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Bopei Wei,Shuaihao Wang,Jiaxin Wang,Man Zhou,Ping Wang,Yuanyuan Yu,Qiang Wang
Nowadays, the Chlorination-Hercosett process dominates the production of machine-washable wool fabric. However, absorbable organic halogens (AOX) generated during the treatment are highly detrimental to human health and the environment. Herein, we developed an innovative pad-steam-pad-cold batch enzymatic treatment with the merit of being eco-friendly, water-saving, and cost-effective to replace traditional high pollution chlorination technique. With the assistance of sodium sulfite or L-cysteine, a broad-temperature-range proteinase (BTRP) can efficiently hydrolyze wool scales during the steaming and cold batch processes. The results indicate that BTRP treatment endows the wool fabric with excellent dimensional stability, acceptable strength loss, and improved wearability properties such as drapability, and air and moisture permeability. This non-chlorination treatment achieves a felting shrinkage of 4.33 % ± 0.28 %, and a tensile strength loss of 12.36 % ± 1.46 %. Furthermore, colored wool samples treated with BTRP were shown to maintain their original color performance, including K/S value and various color fastness properties. Pilot plant tests indicates that this technique remarkably decreased the cost of chemical materials and water usage during enzymatic treatment. As an ideal alternative substitute for the Chlorination-Hercosett treatment, the “pad-steam-pad-cold batch” approach based on BTRP treatment can be utilized for commercial production of pristine and colored machine-washable wool garments.
研究领域:
纺织科学
·
生物技术
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Device
·
2024
·
IF 0
Yuqing Shi,Kemeng Zhou,Xiaohao Ma,Liting Huang,Xinmeng Hu,Pengwei Wang,Yaokang Zhang,Fan Chen,Mingli Huang,Jiazhen Wu,Xin He,Qiyao Huang,Zijian Zheng,Yuanjing Lin
Textile-based electronics possess comfortable epidermal contact and the potential for wearable healthcare applications such as non-invasive sweat biosensing. However, achieving washable biosensors without sacrificing sensitivity and wearing comfort remains a challenge. Herein, we develop β-Bi 2 O 3 nanoflakes, which enable washable textile-based biosensors. The β-Bi 2 O 3 nanoflakes with fast ion conductivity possess high moisture stability without introducing large impedance. The incorporation of β-Bi 2 O 3 nanoflakes improved the sensitivity and washability of textile ionic sensors for sodium, potassium, and proton sensing, with a performance retention of over 90% after 20 washing cycles. As a demonstration, we created a washable and reusable integrated electronic textile wristband for wireless sweat biomarker analysis. This work showcases the use of nanostructured oxides as a washing-resistive layer and a fast ion conductor to confer washability on textile-based sensing devices.
研究领域:
生物医学工程
·
纳米材料
·
可穿戴设备
·
电化学传感
✓ 已验证
DOI
Small
·
2024
·
IF 13
Xiuxia Wang,Yi Yu,Jianan Li,Xinyu Zhang,Linxi Zhu,Sizhe Lin,Jin Gao,Ran Du,Dewu Lin,Yue Hu
Horizontal arrays of single-walled carbon nanotubes (SWCNTs) have shown immense potential for application in emerging devices due to their excellent electrical and thermal properties. The direct growth of SWCNT arrays using high-activity metal catalysts is one of the promising methods to approach the mass production of dense SWCNT arrays. However, an inevitable obstacle lies in the post-purification of metal residual. Herein, a sowing strategy to prepare size-tunable potassium chloride (KCl) catalysts for the efficient growth of the SWCNT array with a density of 10 tubes per micron is reported. Through a controllable etching process, numerous surface defects (e.g., vacancies and kinks) are uniformly generated on the substrate as seed pit-like sites for the accommodation and anchoring of catalysts. The well-distributed KCl catalysts with a homogeneous size of ≈1.4 nm enable the growth of ≈1.3 nm SWCNTs through a vapor-liquid-solid mechanism. Importantly, 94 at.% KCl catalysts can be dramatically removed through a simple water-washing process, thus leaving contamination-free SWCNT arrays behind. Interestingly, 85% of nanotubes show metallic properties, which is demonstrated by the combination of electrical characterization and the multi-laser Raman spectroscopy. This sowing strategy contributes to the direct growth of uncontaminated high-density SWCNT arrays.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）