JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2018
·Vol. 23
·期 1
·269-276
·
IF 2.509
Wang Zenghao,Xie Yongshuai,Xu Chonghe,Shi Shuying,Wang Lin,Zhang Guanghui,Wang Xinqiang,Zhu Luyi,Xu Dong
Lithium-ion batteries have been receiving more and more attention because of the energy crisis. As an important subassembly of lithium-ion batteries, the separator greatly affects the safety of the batteries. Herein, we report for the first time, a novel method fabricated separator by mixing zirconia fibers with polyvinylidene fluoride (PVDF) via papermaking process. The separators possess abundant pores and uniform structure after the phase inversion process. The separator properties were systematically studied at different proportion of PVDF. We find that when the content of PVDF is 40%, the separator has high porosity (77.69%), high electrolyte uptake (523.3%), and excellent thermal stability (thermal shrinkage ratio is 0% at 500 °C). In addition, the rate capability, cycle performance, and ionic conductivity are also investigated. We anticipate that the papermaking method of zirconia fibers will provide a strategy to fabricate a promising separator for enhanced electrochemical performance and high safety of lithium-ion batteries.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2013
·
IF 3.473
Changwang Shao,Guowei Zhou,Zhaocheng Li,Yue Wu,Delan Xu,Bin Sun
Large-diameter tube-like mesoporous TiO 2 nanotubes were synthesized via homogeneous precipitation from aqueous solutions containing titanium oxysulfate (TiOSO 4 ) using urea. The cationic surfactant cetyltrimethylammonium bromide was used as a structure-directing agent. Prepared samples were characterized by X-ray diffraction, transmission electron microscopy (TEM), field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and N 2 adsorption–desorption isotherms. Experimental results indicated that the samples exhibit tube-like structures with lengths of approximately 6 μm to 8 μm, large tube diameters of approximately 500 nm to 600 nm, and a wall thickness of approximately 450 nm. TEM images and N 2 adsorption–desorption isotherms showed that the tube walls of the samples have a uniform mesoporous structure. A possible mechanism for the formation of tube-like mesoporous TiO 2 was proposed. The photocatalytic activities of the large-diameter tube-like mesoporous TiO 2 were assessed via the photocatalytic decomposition of papermaking wastewater under ultraviolet light irradiation. The effects of different parameters such as UV light irradiation, catalyst dosage and solution pH on photocatalytic activities of tube-like mesoporous TiO 2 were studied. The as-synthesized tube-like TiO 2 showed higher photocatalytic activities than Degussa P25. MTS3 exhibited the highest photocatalytic activity. The chemical oxygen demand and chroma percent degradations of papermaking wastewater were approximately 73.0% and 99.5%, respectively, at MTS3 dosage of 1.0 g/L and pH value of 3.0 after 12 h of photodegradation.
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
WATER AIR AND SOIL POLLUTION
·
2020
·Vol. 231
·期 8
·1-14
·
IF 1.9
Zhao Tianyu,Cheng Hao,Liang Yinna,Xiong Jianhua,Zhu Hongxiang,Wang Shuangfei,Liang Jiaxiang,Chen Guoning
Photocatalysis has emerged as a promising approach for treating environmental pollution. In this study, TiO 2 /sponge composites with good photocatalytic activity in visible light were prepared via a simple and efficient low-temperature process and applied to the degradation of 2,4,6-trichlorophenol (2,4,6-TCP) present in papermaking wastewater. The process conditions for preparing TiO 2 /sponge composites were optimized by varying the TiO 2 dosage, cellulose dosage, and surfactant concentration. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) results showed that TiO 2 successfully adhered to the sponge surface and that the composites achieved a good recycling effect. Degradation occurred under visible light, and a degradation rate of 81% for 2,4,6-TCP with initial concentration of 20 mg/L was achieved in 4 h. The fragments were analyzed using ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS), which revealed the formation of 2-hydroxyvaleric acid (2-HVA) as a degradation product; a possible degradation mechanism is proposed to interpret these findings. Visible-light photocatalysis shows high potential for the rapid and environmentally friendly destruction of organic pollutants in papermaking wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Zifan Wu,Lu Chen,Yacong Deng,Yuting Qiu,Bin Liu,Yichuan Li,Yuan Pan,Bin Dong,Yongming Chai
During the chemical pulping of lignocellulose, a lot of papermaking black liquor (pH 13–14) was generated, containing a substantial amount of low molecular weight lignin, which has potential for the production of aviation fuels. Herein, black liquor was converted into aviation fuel-range arenes via a two-step process including direct solvolysis in strong alkali followed by catalytic hydrodeoxygenation of the products. In the solvolysis step, the black liquor (20 % solids content, pH 14) could directly produce lignin oil (mainly consisting of alkylphenols and oligomers linked by β-O-4 and β-5 linkages) with a high yield (67.3 wt%) at 280 °C under hydrogen atmosphere in a methanol/ n -hexane (2:1, v/v) mixed solvent, which was much higher than that of the other lignin feedstocks. In the second step, the obtained lignin oil from the black liquor was efficiently hydrodeoxygenated into arenes (80.1 % selectivity) over a CoMoS/γ-Al 2 O 3 catalyst at 320 °C under 2 MPa H 2 , achieving a deoxygenation degree of 97.7 %, and CoMoS/γ-Al 2 O 3 efficiently promoted the cleavage of C ar -O bonds in lignin-derived phenols. Techno-economic analysis and life cycle assessment further emphasized the actual feasibility of the two-step process. This work presents a novel strategy for converting papermaking black liquor into aviation fuels.
研究领域:
化学制浆
·
木质素转化
·
燃料生产
·
催化加工
·
绿色化学
·
生物炼制
✓ 已验证
产品关联
DOI
高影响因子
FIBERS AND POLYMERS
·
2021
·Vol. 22
·期 6
·1518-1525
·
IF 2.153
Chen Chaoying,Zhang Xiumei,Deb Hridam,Liang Fugen,Zhu Haidong,Cui Kecong,Zhang Yong,Yao Juming
Flocculation is the first and important step to remove suspended and slightly soluble pollutants in industrial wastewater treatment. Flocculant is just the key element for flocculation process. Polyacrylamide (PAM) is the most widely used flocculant. But it still holds some potential flaws which are ignored by people. An eco-friendly bamboo cellulose-grafted-ployacrylamide flocculant (BC-g-PAM) was then synthesized by free-radical graft copolymerization in homogeneous aqueous solution. The optimal synthesis conditions of the BC-g-PAM was investigated. FTIR, TG, XRD and FESEM were employed to characterize and define its molecular structure and physical characteristics. The BC-g-PAM was also adopted to treat an actual papermaking wastewater. The positive results showed that the BC-g-PAM exhibited an excellent flocculation performance on the papermaking wastewater. The average turbidity removal rate reached 99.7 % and related suspended solids exhibited the corresponding decline. This flocculation also caused a positive effect on the reduction of COD Cr and BOD 5 of the wastewater. Meanwhile, the BC-g-PAM exhibited an excellent biodegradability. Its degradation rate reached 63.4 % at 90 d in soil extracting solution.
研究领域:
环境科学
·
化学工程
·
废水处理
✓ 已验证
产品关联
DOI
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2024
·Vol. 41
·期 1
·325-336
·
IF 2.9
Mofidian Roozbeh,Hosseini Seyed Sharafoddin,Miansari Mehdi,Salmani Hassan
Mazandaran wood and paper factory (MWPF) is the largest paper producer in the north of Iran. To supply raw materials for producing paper products, a forest which is located near this factory is used. The primary pollutants of this factory are solid substances, toxic substances, color, and dissolved oxygen in the water. Removing solid materials, and chemical and biological oxygen demand (COD and BOD) reduction are among the most significant problems in excluding pollution. In this study, a pretreatment process is done using aluminum chloride, impurities and initial turbidity of MWPF effluents are reduced, and COD and BOD values are removed up to 87% and 93%, respectively. After that, by a zeolite–agar adsorbent, the MWPF effluent is subjected to a continuous adsorption process, and during this cycle, more than 98% of heavy metals (HM) in the effluent are removed. The design of these tests was done by Design Expert Software. After conducting 16 trials, the optimal conditions for eliminating HM, including 2 mg/l zeolite–agar adsorbent, pH 4, temperature 40 °C, and contact time 90 min, have been obtained. In addition, the effect of temperature, contact time, pH, and adsorbent concentration on the HM removal percentage was investigated, and the results showed that the operating temperature has the most negligible effect on the HM removal efficiency. UV, XRD, FTIR, and SEM analyses were also assessed to describe the conditions better and examine the synthesized adsorbent more accurately. The adsorption equations showed a better agreement with the Langmuir model, which indicates the appropriate porosity of the nanoadsorbents.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
APPLIED ENERGY
·
2024
·
IF 10.1
Caili Li,Yingjie Li,Yi Fang,Chunxiao Zhang,Yu Ren
CaO-CaCO 3 thermochemical energy storage is a promising technology for solar energy utilization and storage. Alkaline papermaking waste (APW) from paper mills, which is mainly composed of CaCO 3 . Herein, TiO 2 /MnFe 2 O 4 co-modified APW was synthesized. The energy storage capacity of TiO 2 /MnFe 2 O 4 co-modified APW was studied during CaO-CaCO 3 thermochemical energy storage cycles in a duel fixed bed reactor. TiO 2 /MnFe 2 O 4 co-modified APW mainly consists of CaO, MgO, CaTiO 3 , CaMnO 3 , and Ca 2 Fe 2 O 5 . The introductions of TiO 2 and MnFe 2 O 4 significantly improve the cyclic stability and optical absorption property of APW in 30 cycles. The co-modified APW (the mass ratio for CaO:TiO 2 :MnFe 2 O 4 = 100:5:5) possesses high sintering resistance, energy storage, and optical absorption capacities in 30 cycles. The energy storage conversion and capacity of the co-modified APW are 0.72 and 2288.57 kJ/kg after 30 cycles, respectively. The optical absorptance of the co-modified APW reaches 49%, which is 9.25 times as high as that of APW. CaTiO 3 and CaMnO 3 effectively mitigate the sintering of CaO grains. CaMnO 3 and Ca 2 Fe 2 O 5 significantly increase the optical absorptance of APW. The co-modified APW possesses stronger basicity and more oxygen vacancies, which is favourable for the carbonation reaction. Thus, TiO 2 /MnFe 2 O 4 co-modified APW is a good energy storage material.
研究领域:
材料科学
·
能源存储
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Fangjun Chen,Jinze Dai,Henrik Ström,Yi Ouyang,Muhammad Shahzad Khurram,Bilainu Oboirien,Lin Lang,Qingang Xiong
The mechanisms by which calcium-rich inorganics within pulp and paper mill sludge (PPMS) influence the pyrolysis of its organic components remain largely unexplored. This study investigated the effects of inorganic constituents on the evolution of pyrolysis products from major organic components (cellulose, plastics, lipids, proteins, and ink) in PPMS through fixed-bed pyrolysis experiments. The results demonstrated that inorganics significantly promoted secondary tar reactions by improving heat transfer, providing catalytic sites, and prolonging the residence time of pyrolysis vapors. These effects markedly increased gas yields, particularly CO 2 (e.g., by 29.27–35.41 mL/g for cellulose), and decreased tar yields (e.g., by 10.27–11.38 wt% for cellulose), while also altering tar composition. Specifically, calcium-rich inorganics catalyzed the conversion of cellulose into small ketone molecules such as hydroxyacetone, reducing the proportions of anhydrosugars and furans. For plastics, PPMS ash promoted the β -scission of long-chain aliphatic hydrocarbons and the transformation of monocyclic hydrocarbons into polycyclic aromatic hydrocarbons while also increasing char formation. For lipids, calcium-rich inorganics effectively catalyzed the decarboxylative ketonization of palmitic acid to produce 2-heptadecanone. For proteins, PPMS ash suppressed NH 3 release and promoted nitrogen migration into nitrogen-containing heterocyclic compounds. For ink, the inherently high ash content limited the regulatory effect of additional ash. Overall, this study provides mechanistic insights into PPMS pyrolysis and supports its sustainable conversion.
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Kangying Guo,Baoyu Gao,Xiangwei Tian,Qinyan Yue,Ping Zhang,Xue Shen,Xing Xu
In this study, a series of polyaluminium chloride/papermaking sludge-based organic polymer (PAC-PSBF) composites with different PAC basicity and PAC/PSBF mass ratios were prepared from papermaking sludge . The basic properties of the aforementioned composites were characterized, and their flocculation efficiencies were studied in the disperse yellow (DY) and reactive blue (RB) dye removals. The results of the flocculation experiments demonstrated that PAC-PSBF composites performed better than PAC regardless of the PAC basicity or PAC/PSBF mass ratios. The composites with low PAC basicity were effective in DY and RB dye removals. PAC-PSBF composites with the same PAC basicity but higher PAC/PSBF mass ratios exerted more satisfactory color removals and floc properties in both DY and RB dye removals. PAC-PSBF composites were more pH-independent than PAC, and the excellent flocculation efficiencies of the composites was achieved at pH 4.0 to 8.0 in DY/RB dye removals. In brief, desirable flocculation efficiencies of the PAC-PSBF composites were obtained when PAC and PSBF were appropriately combined together.
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
ChemistrySelect
·
2025
·Vol. 10
·期 31
·e00311
·
IF 2
Yong Guo,Qian Zhu,Ruimei Zhang,Yiwei Sun,Xintai Su
Graphical This study explores the innovative use of paper sludge as a precursor for nitrogen-doped porous carbon adsorbents via a one-step ethylenediamine dihydrochloride-assisted activation. The best nitrogen-doped porous carbon exhibited high efficiency in removing hexavalent chromium (Cr(VI)) from wastewater, with a large specific surface area (1244 m 2 /g) and an adsorption capacity of 193.6 mg/g. Paper sludge can be directly pyrolyzed into activated carbon, but its adsorption capacity remains limited. This study presents a simple ethylenediamine dihydrochloride-assisted activation method to transform paper sludge into nitrogen-doped porous carbon adsorbents for efficient hexavalent chromium (Cr(VI)) removal. Characterization results confirm that ethylenediamine dihydrochloride effectively introduces nitrogen dopants and significantly increases the specific surface area. The best-performing nitrogen-doped porous carbon exhibits a large specific surface area (1244 m 2 /g) and a high Cr(VI) adsorption capacity (193.6 mg/g). Adsorption experiments reveal a spontaneous, endothermic chemisorption process following pseudo-second-order kinetics and a Langmuir model. X-ray photoelectron spectroscopy (XPS) analysis further indicates that Cr(VI) is reduced and adsorbed onto nitrogen-containing functional groups in the porous carbon. This work demonstrates a chemical activation approach for converting paper sludge into high-performance porous carbon adsorbents, offering a valuable solution for hazardous metal removal and paper sludge valorization.
研究领域:
环境科学
·
材料工程
·
化学工程
·
废水处理
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2022
·Vol. 30
·期 3
·1503-1515
·
IF 6.123
Liu Shiqi,Ji Hairui
In this study, a strategy of corncob valorization was proposed. Corncob was first pretreated with a recyclable acid hydrotrope ( p -TsOH, aqueous solution) to selectively remove lignin and hemicelluloses. After pretreatment, the collected liquid phase was diluted with deionized water to precipitate lignin. The hemicelluloses degradation products, mainly pentose, in the resulting acid liquor were converted into furfural with a yield of 53.65% without adding any catalyst. The collected lignin was depolymerized to phenolic monomers with a yield of 68.00% via a hydrodeoxygenation process. The pretreated cellulose-rich solid was subjected to 10 s ultrasonic treatment to form pulp and subsequently used for papermaking by blending it with commercial softwood pulp. With a corncob pulp addition of 20%, the tensile index and ring crush index of hand sheets increased by 10.62% and 5.05%, respectively, compared with those containing 100% softwood pulp. Therefore, this study provided a strategy for corncob valorization toward multipurpose fractionation: furfural, phenolic monomers, and pulp, reaching a comprehensive utilization of corncob. Graphical abstract
研究领域:
化学工程
·
生物技术
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Pengju Liu,Xu Yang,Weiwei Chen,Yi Hao
To solve the shortcomings of poor solubility, low cationic strength , and small molecular weight of chitosan (CTS), acryloyloxyethyl trimethyl ammonium chloride (DAC) and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) were introduced into the amino group of chitosan by graft copolymerization , and the modified chitosan flocculant CTS-DAC-AMPS was successfully prepared. The performance of CTS-DAC-AMPS in the treatment of papermaking wastewater was investigated, and the mechanism of the flocculation process was analyzed. The results showed that the crystal habit of CTS-DAC-AMPS was reduced, and the solubility range was broadened compared with CTS due to the introduction of DAC and AMPS. In addition, CTS-DAC-AMPS with quaternary ammonium and sulfonic groups prompted its cationic strength stronger than CTS. In addition to high thermal stability, CTS-DAC-AMPS, composed of two CTS molecules, one DAC molecule, and one AMPS molecule, had a long molecular chain . The results of flocculation experiments showed that the performance of CTS-DAC-AMPS in treating papermaking wastewater was better than that of unmodified CTS and commercially available flocculants. Based on the experimental results, the mechanism of CTS-DAC-AMPS treatment of papermaking wastewater was mainly charge neutralization.
研究领域:
环境科学
·
材料科学
✓ 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）