ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Shuaifeng Chen,Huan Yang,Qing Chen,Longyang Liu,Xue Hou,Lijie Luo,Chunfu Lin,Changjiu Li,Yongjun Chen
A green and efficient route to the synthesis of boron carbonitride (BCN) nanoribbons was demonstrated using waste coconut shells, boric acid and urea as the raw materials. The BCN nanoribbons were then applied as anode materials for lithium-ion batteries (LIBs). The BCN nanoribbons possessed high specific surface area and porosity because of the inherent characteristics of the coconut shells, providing multiple active sites and diffusion channels for Li + ions. High specific capacity, excellent rate capability and cycling stability were achieved especially when the carbon content in BCN is relatively high. The average reversible capacity and the retention rate reached 800 mAh g −1 at 0.1 A g −1 and 98% after 1000 cycles, respectively. This route not only paved a new way to the synthesis of BCN nanoribbons, but also realized the reuse of waste natural resources for fabricating LIBs anode materials with excellent performance.
研究领域:
材料科学
·
能源存储
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Zhen Huang,Jiangfeng Lu,Shule Liu,Jing Ding,Weilong Wang
Alkali metal molten salts (AMS) have shown exceptional potential in enhancing the CO 2 adsorption capacity of MgO-based sorbents at moderate temperatures. However, significant challenges still persist in terms of their thermal stability and recyclability due to sintering issues. In this study, a MgO-SrO composite sorbent was prepared using modified methanol evaporation-induced surface precipitation and promoted by molten nitrate to facilitate CO 2 adsorption at moderate temperatures. Adsorption kinetics revealed that the chemisorption process dominated the CO 2 adsorption on the surface of the MgO-SrO sorbent, with intraparticle diffusion being the main limiting step. Further investigation into the thermal stability and recyclability showed that the MgO-SrO sorbent retained good adsorption performance after 15 cycles of adsorption–desorption. By exploring the adsorption mechanism through Density functional theory (DFT) calculations, the participation mechanism of SrO during CO 2 adsorption was elucidated by examining the charge transfer and bonding strength of surface O atoms on the MgO. This study provides new insights for enhancing the thermal stability and recyclability of MgO-based sorbents under moderate temperature conditions.
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
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Hai Wang,Yeqing Wang,Hua Xu,Hang Zhou,Liang Wang,Xiangju Meng,Feng-Shou Xiao
Hydration of nitriles has been practically used for the production of amides, wherein the homogeneous catalysts including acids/bases and metal complexes are generally employed. Here, we report that nanorod manganese oxide (NR-MnO2) as a sustainable and low-cost heterogeneous catalyst is highly active and selective for the hydration of aromatic, heterocyclic, and aliphatic nitriles into the corresponding amides. The catalytic properties of NR-MnO2 significantly outperform that of commercial Pd/C and Ru/C catalysts and even the state-of-the-art homogeneous catalysts in the literature. In the continuous recycling tests, the NR-MnO2 catalyst exhibited excellent durability with negligible deactivation, which offers a good opportunity for practical production of these chemicals in the future.
研究领域:
化学工程
·
催化科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Jing Tang,Xue Bai,Hongliang Huang,Songlin Xue,Jianming Pan
Simple and green synthesis of oxime or amidoxime functionalized hollow sorbents are critical for meeting the demands of highly efficient uranium extraction. To address this, a facile methodology using air bubbles generated from the “Ouzo-Like” effect as templates to synthesize oxime/amidoxime functionalized hollow PDA nanospheres (H-PDA-SO and H-PDA-AO) with fast and massive uranium extraction performances was reported. When 50 mL of Tris solution (0.6 mg mL −1 ) was mixed with n -propanol (6.25 mL) for 2.0 min, nanobubbles with the mean size of 56.7 nm spilled out, and uniformly sized H-PDA-SO nanospheres with oxime groups (about 250 nm) and H-PDA-AO nanospheres with amidoxime groups (about 150 nm) were simply obtained via self-assembled polydopamine and post-modification around the air/water interface. Owing to the accessible affinity sites and hollow structure, H-PDA-SO and H-PDA-AO displayed high maximum adsorption capacities (103.09 mg g −1 and 331.62 mg g −1 at 298 K) and fast adsorption rate (below 60 min) with high removal efficiency. Under the influence of coexisting ions, H-PDA-SO and H-PDA-AO showed not only a high uranium adsorption capacity but also a more predominant capacity than all the competing ions. Moreover, H-PDA-SO and H-PDA-AO exhibited high stability as well as excellent recyclability toward uranium capture after five regeneration cycles. Surface coordination of oxime/amidoxime sites with uranium was the main binding mechanism, and negative charged O-containing function groups enhance this affinity interactions.
研究领域:
材料科学
·
环境化学
·
纳米技术
·
放射化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 41
·23545-23553
·
IF 3.049
Jianhui Li,Fan Yang,Quan Zhou,Lijie Wu,Wenying Li,Ruipeng Ren,Yongkang Lv
The ternary magnetic Fe3O4/BiOBr/BiOI (x : 3 : 1) photocatalysts were successfully synthesized by a facile solvothermal method. The samples were characterized by XRD, SEM, EDS, ICP-AES, XPS, UV-vis DRS, PL and VSM. Nitrogen-containing dye RhB was used as a degradation substrate to evaluate the photocatalytic degradation activities of the samples. The photocatalytic performance of Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) is superior to other Fe3O4/BiOBr/BiOI (x : 3 : 1). Compared with binary magnetic Fe3O4/BiOBr (0.5 : 1) prepared in our previous work, the Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) has obvious advantages in photocatalytic activity and adsorption capacity. And the specific surface area (48.30 m2 g−1) is much larger than that of the previous report (Fe3O4/BiOBr/BiOI (0.5 : 2 : 2)) synthesized by a co-precipitation method. Besides, after 25 s of magnetic field, Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) can be rapidly separated from water. After eight recycling cycles, the magnetic properties, photocatalytic activity, crystallization and morphology of the Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) catalyst remain good. The possible photocatalytic degradation mechanism of RhB under Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) photocatalyst was also proposed. The results indicate that the ternary magnetic Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) composite with high photocatalytic degradation efficiency, good magnetic separation performance and excellent recyclability and stability has potential application prospect in wastewater.
研究领域:
环境科学
·
材料科学
·
化学
✓ 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
Jia Yang,Cun Lv,Zhuoxin Wen,Meiqi Wang,Manman Zhao,Zhanxiong Li
A metal-organic framework material (MOF) ZIF-67 has proven to be an efficient metal-based catalyst by solution method. In this paper, the MOF composite nanofiber film was obtained by electrostatic spinning MOF and polyacrylonitrile (PAN). MOF composite nanofiber films which have controllable morphology were achieved by regulating process parameters, including electrospinning voltage, spinning liquid concentration, flow rate and blending ratio. The optimal process parameters were determined as follows: PAN concentration 10 wt%; PAN/ZIF-67 blending ratio 1:1; Voltage 8 kV; Flow rate 0.3 mL·h -1 and collective distance 18 cm. The fabricated films were well characterized using FTIR，XRD，XPS，SEM，WCA，BET，EPR and HPLC. The findings demonstrated that the PAN/ZIF-67 has a porous surface morphology. The catalytic degradation test showed that the composite nanofibers have excellent catalytic performance, which fully degraded twice the mass of methylene blue (MB) in 30 min. PAN/ZIF-67/PMS (mass ratio 1:1) which catalytic degraded the same mass of BPA need only 7 min. The PAN/ZIF-67 displayed outstanding recyclability, whose catalytic degradation ability, fracture strength and fracture elongation rate almost remained stable after the cyclic application. Additionally, the catalytic degradation mechanism of PAN/ZIF-67 was investigated and the result exhibited that the existence of SO 4 · - 、 OH - and 1 O 2 multi components catalyzed the degradation of MB/BPA. In particular, 1 O 2 has been identified as the primary active matter within the catalytic system. Simple fabrication, excellent catalytic degradation, and reusability enabled the prepared PAN/ZIF-67 to be highly promising for practical use in environmental protection.
研究领域:
环境科学
·
材料科学
·
催化
·
纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Xiaodong Yang,Shuaiqi Luo,Jinfeng Zhou,Pengkai Sun,Yuanxia Guo,Jin Zhao,Kai Wang,Bowen Jiang,Tianyang Luo,Enshuo Zhang,Shengjun Zhao,Jianing Fang,Lili Wang,Ye Han,Fanming Zeng,Andrew R. Zimmerman,Bin Gao
New and sustainable approaches for the removal of cationic organic pollutants, such as methyl violet (MV) and methylene blue (MB) dyes, from aqueous solutions are needed. In this study, hickory wood was pyrolyzed with montmorillonite and then ball milled with dysprosium oxide at 350 rpm for 3 h, without any use of toxic compounds. The resulting composite was rich in oxygen-containing functional groups (e.g., carboxyl and hydroxyl), had uniform lamellar-porous micromorphology and a surface area (88.9 m 2 g −1 ) 2.5 times that of the original biochar. The composite exhibited excellent removal of aqueous methylene blue (113.6 mg g −1 ) and methyl violet (107.6 mg g −1 ), which was approximately 6.6 and 2.6 times that of the biochar. Modeling and characterization results suggest that the adsorption of cationic organic pollutants on the composite was controlled by multiple mechanisms including electrostatic attraction, hydrogen bonding, ion exchange, and surface complexation. After five regenerations, the composite maintained methylene blue (87.4 %) and methyl violet (84.8 %) removal ability, thus demonstrating good stability and reusability potential. These findings highlight the advantages and potential of ball-milled dysprosium oxide-loaded-biochar-montmorillonite composite for water treatment and environment remediation.
研究领域:
环境科学
·
材料工程
·
水处理技术
·
纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Xiaolin Yue,Can Cui,Shaolin Deng,Lan Wang,Ping Li,Anhong Li,Yizhong Zhang,Rui Hao,Wenyuan Tan
Currently, Zeolitic imidazolate frameworks (ZIFs) face challenges in antibiotic adsorption due to their inherent difficulty in recovery and susceptibility to hydrolysis. To overcome these limitations, herein, Mn-doped ZIF-67 was synthesized via coordination modification and then electrospun with high-mechanical-strength polyvinylidene fluoride (PVDF) to produce Mn-ZIF-67@PVP/PVDF composite nanofiber membranes. Characterization results based on SEM, XRD, and FT-IR analyses demonstrate that the layered nanofiber membrane provides abundant attachment sites for Mn-ZIF-67. Antibiotic adsorption experiments further reveal that the composite membrane exhibits facile recyclability, with Mn-ZIF-67 retaining 80 % of its initial adsorption capacity after five consecutive cycles, while maintaining its crystalline structure and remarkable aqueous stability throughout repeated utilization. The composite membrane achieved maximum adsorption capacities of 583.43 mg/g for tetracycline (TC) and 122.42 mg/g for ciprofloxacin (CIP). The adsorption process followed pseudo-first-order kinetics and Langmuir isotherm models, while thermodynamic analysis revealed a spontaneous and endothermic nature. The adsorption performance showed minimal impact from coexisting ions and pH variations. These superior characteristics of enhanced adsorption performance, exceptional water stability, and convenient recoverability endow the Mn-ZIF-67@PVP/PVDF composite membrane with significant practical advantages over conventional ZIF materials for antibiotic removal applications.
研究领域:
环境科学
·
材料科学
·
纳米技术
·
化学工程
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Xiaolong Wang,Juping Liu,Haiping Yang,Changzhi Li,Yang Yang
The hydrodeoxygenation (HDO) of biomass derived oils offers a viable route to produce sustainable aviation fuels, yet its large-scale application remains constrained by the reliance on noble metal catalysts. Herein, we report a high-entropy NiFeCoMo catalyst composed entirely of earth-abundant elements, which achieves noble-metal-level performance in the HDO of lignin-derived compounds. The catalyst exhibits remarkable activity and selectivity across a range of model compounds and their mixtures, reaching up to 99.9% conversion and 98.1% selectivity for methylcyclohexane even under mixed-feedstock conditions. Recyclability tests confirm excellent durability over five consecutive cycles without measurable loss of activity. Density functional theory calculations reveal that the synergistic electronic interaction among multiple metal sites induce strong hydrogen spillover, promoting the formation of oxygen vacancies that facilitate complete C-O bond cleavage. This work establishes high-entropy catalysts as a robust and sustainable alternative to precious metals for efficient biomass upgrading, offering new insights into the design of multifunctional active sites for selective hydrodeoxygenation.
研究领域:
催化
·
可再生能源
·
生物质转化
·
材料科学
·
可持续化学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Zhengxing Jiang,Hua Li,Yuequan Deng,Yi He
Life is preserved by complex enzymatic reaction systems. Inspired by life, here we report on the first example to fabricate blue light-gated reversible silver nanozyme reaction networks that achieve life-like adaptivity. Upon blue light excitation, silver nanoparticles (AgNPs) display oxidase-like activity in the presence of Cl– as a cofactor. The addition of Cl– promotes the separation between hot holes and electrons that are generated by excited-state surface plasmon of AgNPs, inducing the generation of highly reactive hydroxyl and superoxide anion radicals. They oxidize colorless 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)diammonium salt (ABTS) to yield green ABTS radicals (ABTS•+). It is shown that ABTS•+ is able to be reduced by AgNPs to regenerate ABTS when the blue light is turned off, and the reaction system returns to its initial state, which is the typical feature of the artificial adaptive system. The dynamic process of the adaptive system is tunable by changing the concentrations of AgNPs and Cl–, and it possesses excellent recyclable performance, which can be repeated at least six times. Overall, the silver nanozyme reaction networks are capable of responding to blue light stimuli and renewing by recycling to the initial state without blue light irradiation.
研究领域:
材料科学
·
纳米技术
·
生物化学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Nan Zhang,Tao Bao,Yan Gao,Xianliang Xu,Sicen Wang
[email protected] composite was fabricated for greater adsorption capacity through the utilization of corncob, which is a natural, sustainable, and cellulose-rich resource. An in-situ growth strategy was implemented to graft UiO-66-NH 2 on carboxyl-terminal corncob induced by the thermal esterification of critic acid. Subsequently, [email protected] 2 @TpBD was constructed through the Schiff base reaction between 2,4,6-triformylphloroglucinol (Tp) and UiO-66-NH 2 as well as benzidine (BD). The ratio of UiO-66-NH 2 and TpBD was optimized to be 5:3 for enhancing adsorption capacity. Based on the π-π, hydrogen bonding, and -SO 2 -Zr-O- coordination effect, sulphonamides (SAs) were chosen to investigate the adsorption capacity of adsorbent using an in-syringe solid phase extraction (IS-SPE) method. The binding energy calculated using density functional theory (DFT) reached −37.45 Kcal/mol, which indicated the strong interactions between SAs and [email protected] 2 @TpBD. Combined with ultra-performance liquid chromatography (UPLC), a high sensitivity was obtained with low detection of 0.10 μg/L. The prepared [email protected] 2 @TpBD exhibited good reproducibility within relative standard deviations (RSDs) 3.1%-3.4% in intra-batch and 4.3%-8.4% in inter-batch. Moreover, the extraction capacity of adsorbent was not decreased in 20 recycles adsorption–desorption within RSDs 3.8%-8.5%. With features of permanent porosity, multiple active sites, and good renewability, [email protected] 2 @TpBD shows great potential towards industrial applications in the field of adsorption.
研究领域:
环境科学
·
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 76
·72479-72486
·
IF 3.289
Chunrong Ren,Xingeng Ding,Huiqin Fu,Cheng Meng,Wenqi Li,Hui Yang
Amino-functionalized nanocomposites with a magnetic CoFe2O4 core and an amorphous SiO2 shell have been designed and synthesized. The core–shell structure was characterized by SEM, EDS, TEM, FTIR and XPS. CoFe2O4@SiO2–NH2 with a high saturated magnetization (28.09 emu g−1) can be easily separated under a moderate external magnetic field within one minute. In addition, the adsorption capacity of the CoFe2O4@SiO2–NH2 for Cu(II), Cd(II) and Mn(II) was 170.829, 144.948 and 110.803 mg g−1, respectively. The removal efficiency was increased from 12 to 85% with an increase in the pH from 4 to 6.5. The adsorbent can be recycled for at least four cycles with a feasible removal efficiency (85.41%). The adsorption process was fitted by pseudo-second-order kinetics and a Langmuir isotherm model. Based on the data of the present investigation, CoFe2O4@SiO2–NH2 could find potential applications in heavy metal ion wastewater treatment.
研究领域:
材料科学
·
环境工程
·
纳米技术
✓ 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）