Journal of the Taiwan Institute of Chemical Engineers
·
2016
·
IF 2.848
Jinsong He,Ping Ma,Atian Xie,Lin Gao,Zhiping Zhou,Yongsheng Yan,Jiangdong Dai,Chunxiang Li
In this work, we reported the successful conversion of the industrial SLS originated from black liquor to low-cost porous carbon with tunable microstructure and ultrahigh adsorption performance of tetracycline (TC) from water via pre-carbonation and KOH activation. Comparatively, LCA-850-4 with a very high specific surface area (2805.8 m 2 /g) and pore volume (1.45 cm 3 /g) showed a maximum adsorption of 1173 mg/g at 298 K, which was far higher than other reported adsorbents. LCA-850-4 exhibited excellent adsorption over a broad pH range. Kinetics and isotherm data was well fitted to the pseudo-second-order rate and Langmuir model, respectively. Thermodynamic parameters indicated a spontaneous and endothermic adsorption. The results are of importance to indicate LCA-850-4 with fast kinetics and excellent reusability possessed the huge potentials in practical pharmaceutical antibiotic wastewater treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Cheng-rui Xie,Yi-xuan Song,Gang Yang,Cheng-gong Sun,Xiang Luo,Tao Wu
The increasing presence of synthetic dyes in wastewater poses a serious environmental threat, necessitating the development of efficient adsorbents for their removal. In this study, a highly porous carbonaceous adsorbent, Fe@C-350, was synthesized through direct carbonisation of MOF-235 under an argon atmosphere for efficient removal of methyl orange from wastewater. Compared to MOF-235, Fe@C-350 retains the inherent structure of MOF-235 while exhibiting a larger BET surface area and increased pore size. The use of Fe@C-350 as an adsorbent in methyl orange adsorption demonstrates exceptional adsorption capabilities over a broad pH range with a maximum adsorption capacity of 1666.7 mg·g −1 . The isotherm analyses indicate that the adsorption process is primarily determined by monolayer physical adsorption. The kinetic studies revealed a rapid adsorption rate, characterized by a high-rate constant of 0.025 g·mg −1 ·min −1 . This can be attributed to the suitable pore size and abundant adsorption sites that facilitate the removal of methyl orange. Further investigation confirmed that Fe@C-350 retained over 98 % of its initial adsorption capacity after 10 regeneration cycles, thus confirming physical adsorption as the fundamental mechanism. Based on these findings, it can be concluded that Fe@C-350 is of significant potential as a promising candidate for the efficient removal of methyl orange from dye-containing wastewater. However, future research is necessary to show its application to the removal of a broader range of contaminants, aiming at enhancing its environmental impact and industrial viability.
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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Junmin Wu,Wenxing Wang,Wenzhe Chen,Can Liu,Tianlong Deng,Xiaoping Yu
The extraction of lithium from liquid minerals, such as salt lake brines and underground brines, has garnered extensive interest due to its eco-friendly and cost-effective properties. However, the effectiveness of this method is constrained by the stability and capacity of the materials. Herein, a new-type inorganic carbon-supported H 2 TiO 3 adsorbent was developed by a novel in-situ polymerization synchronous conversion strategy. It was found that when resorcinol and formaldehyde containing Li 2 CO 3 and TiO 2 were polymerized in-situ and then calcined at 973.15 K, the resin was successfully carbonized to obtain the carbon supporter with a low degree of disorder, and the Li 2 CO 3 and TiO 2 in the supporter were synchronously converted into Li 2 TiO 3 and uniformly dispersed in the carbon matrix. Because of the large specific surface area and strong hydrophilicity of the carbon supporter, the material exhibited a maximum Li + adsorption capacity of 52.14 mg·g −1 , which was far higher than that of inorganic composite materials reported at present. Even the equilibrium adsorption capacity for Li + at a low concentration of 29.26 mg·L −1 reached 28.51 mg·g −1 . Following adsorption, the Li + in the material was easily eluted by 0.25 mol·L −1 HCl, and the elution rate was more than 90 % within 2 h. Dynamic adsorption using a fixed-bed was also performed at 298.15 and 343.15 K, and the adsorption capacity for the same concentration of Li + was 7.08 and 9.44 mg·g −1 , respectively. Because of the high capacity for low-concentration Li + and the promoting effect of temperature on adsorption, the material is well-suited for recovering Li + from liquid resources, particularly from geothermal water with high temperatures and low Li + concentrations.
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
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Qiao Xu,Yinsong Si,Rui He,Xiaoming Qi,Xiuping Su,Yaqin Fu
Fast and safe electric heating is highly needed in extreme climates or thermal therapy. Herein, porous activated carbon derived from silk waste is prepared by a simple method. Various porous activated carbons are obtained using different types and concentrations of activator (KOH, KCl, and KHCO3). The effect of the microstructure on the electric heating performance of these carbons is investigated carefully. The type, activator concentration, and carbonization temperature play key roles in the regulation of electric heating properties. The porous carbon activated by 0.05 M KHCO3 at 800 °C demonstrates larger specific surface area (3077 m2 g–1), higher graphitization degree, and lower resistance (2.4 Ω cm), which synergistically contribute greatly to its higher electrothermal efficiency and better electric heating performance. The equilibrium temperature could reach 73 °C in 2 min under a safe voltage of 12 V, proving the better pore-forming capacity and activating function of KHCO3. An electric heating cotton@carbon composite fabric with quite good electric heating property and stability is also prepared, which could reach 38 °C in 2 min under 12 V safe voltage and maintain a temperature 10 °C higher than the ambient temperature even when bent at an angle of 55°. This activated carbon derived from waste protein using a simple and cheap process has great potential in practical applications.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Nanoscale
·
2019
·Vol. 11
·期 14
·6970-6981
·
IF 6.97
Jian-Ping Song,Liang Wu,Wen-Da Dong,Chao-Fan Li,Li-Hua Chen,Xin Dai,Chao Li,Hao Chen,Wei Zou,Wen-Bei Yu,Zhi-Yi Hu,Jing Liu,Hong-En Wang,Yu Li,Bao-Lian Su
The lithium–selenium (Li–Se) battery has attracted growing interest recently due to its high energy density and theoretical capacity. However, the shuttle effect and volume change during cycling severely hinder its further application. In this work, we report a metal–organic framework (MOF)-derived nitrogen-doped core–shell hierarchical porous carbon (N-CSHPC) with interconnected meso/micropores to effectively confine Se for high-performance Li–Se batteries. The micropores were located at the ZIF-8-derived core and the ZIF-67-derived shell, while mesopores appeared at the core–shell interface after the pyrolysis of the core–shell ZIF-8@ZIF-67 precursor. Such a special hierarchical porous structure effectively confined selenium and polyselenides to prevent their dissolution from the pores and also alleviated the volume change. In particular, in situ nitrogen doping, which afforded N-CSHPC, not only improved the electrical conductivity of Se but also provided strong chemical adsorption on Li2Se, as confirmed by density functional theory calculations. On the basis of dual-physical confinement and strong chemisorption, Se/N-CSHPC-II (molar ratio of Co source to Zn source of 1.0 in the core–shell ZIF-8@ZIF-67 precursor) exhibited reversible capacities of up to 555 mA h g−1 after 150 cycles at 0.2 C and 462 mA h g−1 after 200 cycles at 0.5 C and even a discharge capacity of 432 mA h g−1 after 200 cycles at 1 C. Our demonstration here suggests that the carefully designed Se/C composite can improve the reversible capacity and cycling stability of Se cathodes for Li–Se batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2017
·Vol. 5
·期 2
·446-453
·
IF 4.036
Cuncai Lv,Zhipeng Huang,Qianpeng Yang,Chi Zhang
The development of an effective, non-precious electrocatalyst for hydrogen evolution reaction (HER) is highly desirable for electrocatalytic water splitting and electrochemical/photoelectrochemical water splitting to produce hydrogen. Herein, a facile one-step ultrasonic spray pyrolysis method is developed for the synthesis of MoO2–MoC composite loaded on porous carbon (MoO2/MoC@C), and the MoO2/MoC@C is found to exhibit prominent catalytic activity in the HER. The overpotential required for a current density of 20 mA cm−2 is as small as 133 mV in 0.5 M H2SO4 and 203 mV in 1 M KOH for the MoO2/MoC@C, and the value is superiorly comparable to that of reported metal carbides. The MoO2/MoC@C can work stably both in acidic and basic solution over 30 h with 95% faradaic efficiency in 0.5 M H2SO4 and 93% in 1 M KOH. The synergic effect between MoO2 and MoC is suggested by density functional theory calculations.
研究领域:
材料科学
·
电化学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Colloid and Interface Science Communications
·
2020
·
IF 2.831
Hongye Huang,Yi Cui,Meiying Liu,Ziyang He,Guang Yang,Fengjie Deng,Naigen Zhou,Xiaoyong Zhang,Yen Wei
In this work, we reported the preparation of nitrogen and FeS x codoped porous carbon through hydrothermal treatment of FeCl 3 , thiourea and porous carbon. The degradation results demonstrated that PC-FeS x composite displayed high degradation efficiency towards organic dyes with excellent reusability. Moreover, the degradation efficiency under alkaline solution (pH = 11) is even better under acidic solution (pH = 3), indicating that other routes for generation free radicals were existed. Electron spin resonance (ESR) spin−trap technique was used to determine the free radical species and results demonstrated that both •OH and O 2 − are formed during Fenton reaction . Considered the facile operation procedure, low cost of reagents and high degradation efficiency, we believe this work should of broad interest for fabrication of multifunctional composites for environmental treatment.
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
Scientific Reports
·
2020
·Vol. 10
·期 1
·1-14
·
IF 3.998
Zhang Junwei,Chen Yan,Nie Zeguang,Chen Zhengshou,Gao Junkai
In this study, silver microspheres (SMS) were introduced into cotton stalk porous-carbon (CSP) to prepare silver microsphere doping porous-carbon (SMS-CSP), and then SMS-CSP was used as the matrix of polyethylene glycol (PEG) to synthesize shape-stable phase change material of PEG/SMS-CSP. It was found that the introduction of SMS into CSP could not only greatly improve the loading capacity of the porous-carbon for PEG, but also could increase the thermal conductivity of PEG/SMS-CSP. Additionally, the method of introducing SMS into porous-carbon had the advantages of environmental protection and simple operation. Moreover, the raw material of cotton stalk is a kind of agricultural waste, which has the merits of wide source, low price and easy to obtain. Furthermore, in the preparation of cotton stalk porous-carbon, with the increase of pyrolysis temperature the thermal conductivity of PEG/SMS-CSP could be enhanced significantly. The mechanism about the enhancement of thermal conductivity was clarified, which could provide more basic theory for the study about the thermal conductivity of shape-stable phase change materials (ss-PCMs) based on porous-carbon.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Environmental Progress & Sustainable Energy
·
2016
·Vol. 35
·期 3
·840-846
·
IF 1.631
Wei Shi
Nitrogen-doped coralline-like structure porous carbon (NC-PANI) was prepared through a simple urea-assisted pyrolysis of low-cost and environmental friendly polyaniline (PANI) nanofibers. The urea acts as nitrogen donor and activating agent in the PANI carbonization, to generate the porous carbon with high nitrogen content (10.08 wt %), high surface area (673.7 m 2 /g), and suitable pore size. In addition, the electrical conductivity of NC-PANI is better than that of pristine PANI. With such intrinsic characteristics, the as-prepared novel NC-PANI is highly desirable for energy storage and conversion applications. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 840–846, 2016
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Jirui Yang,Xinhua Qi,Feng Shen,Mo Qiu,Richard Lee Smith
Transfer hydrogenation is highly effective for dechlorinating priority organic pollutants in wastewater. Lindane could be completely dechlorinated at room temperature and atmospheric pressure via transfer hydrogenation, in which Pd (3.1 wt%) supported on chitosan-derived porous carbon (3.1Pd@A600) and formic acid (FA) were used as catalyst and hydrogen source, respectively. Favorable catalytic activity of 3.1Pd@A600 is attributed to pyridinic N of the support that allowed Pd nanoparticles to be well-dispersed in the solid and to pyridinic N-Pd interactions that enhanced FA decomposition over that observed for commercial carbon supported Pd catalyst (5Pd@AC). In the reaction system containing 3.1Pd@A600 and FA, 99.7% lindane conversion and 100% dechlorination efficiency could be achieved at 25 °C and atmospheric pressure within 60 min. Benzene and cyclohexane were identified as end-products of lindane dechlorination . The transfer hydrogenation strategy developed in this study has wide application to chlorinated organic pollutants contained in actual waste streams.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2022
·Vol. 15
·期 3
·924
·
IF 3.748
Bixia Jiang,Lin Cao,Qinghua Yuan,Zhuwen Ma,Zhenrui Huang,Zhidan Lin,Peng Zhang
A large amount of biomass straw waste is generated every year in the world, which can cause serious environmental pollution and resource waste if disposed of improperly. At present, biomass-derived porous carbon materials prepared from biomass waste as a carbon source have garnered attention due to their renewability, huge reserves, low cost, and environmental benevolence. In this work, high-performance carbon materials were prepared via a one-step carbonization-activation method and ball milling, with waste tobacco straw as precursor and nano-ZnO as template and activator. The specific surface area and porous structure of biomass-derived carbon could be controlled by carbonization temperature, which is closely related to the electrochemical performances of the carbon material. It was found that, when the carbonization temperature was 800 °C, the biochar possesses maximum specific surface area (1293.2 m2·g−1) and exhibits high capacitance of 220.7 F·g−1, at 1 A·g−1current density in a three-electrode configuration with 6 M KOH aqueous solution. The capacitance retention maintained about 94.83% at 5 A·g−1after 3000 cycles. This work proves the porous biochar derived from tobacco straws has a great potential prospect in the field of supercapacitors.Keywords:porous carbon materials;supercapacitor;tobacco straws;biochar
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2022
·
IF 5.876
Maosheng Zhang,Zhiqiang Shi,Yongcun Zou,Zongtao Zhang,Runwei Wang,Shilun Qiu
Porous carbons with controlled pore structure have attracted great interest owing to their excellent application potential. Herein, we report a simple synthetic route to synthesize the core-shell C@SiO 2 spheres with various pore structures by calcining core-shell structured RF@SiO 2 (RF = resorcinol-formaldehyde resin). The obtained C@SiO 2 spheres had high surface areas (238.5–732.5 m 2 /g), large pore volume (0.111–0.647 cm 3 /g) and abundant micro-mesoporous structure. The mesopore size of C@SiO 2 spheres can be easily turned in the range of 8–15 nm, by simply modifying the carbonization temperature, size and heating rate of RF@SiO 2 spheres. Among these, S–C@SiO 2 -400 spheres had higher mesopore volume of 0.207 cm 3 /g, this was related to internal carbon slices structure. Meantime, the toluene adsorption capacity of S–C@SiO 2 -400 spheres could reach 448.2 mg/g, which increased by 88.73% compared to ordinary carbon spheres. Moreover, the formation mechanism of the mesopore carbon slices structure was evaluated based on controlled experiments. This work provides a new synthetic method of micro-mesoporous carbon spheres, which can further enrich the application of carbon materials.
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
危险品化学品经营许可证（带存储）