Journal of Food Measurement and Characterization
·
2024
·
IF 2.9
Zhang Tong,Wang Hongyue,Pan Xiaoya,Zhang Xindi,Shi Caihong,Zhang Xiangrong
In this study, quercetin in cellulose porous microspheres were prepared by quasi-emulsion solution diffusion method. The formulation of microspheres was optimized by Box-Behnken Design and their antioxidant activity was evaluated. Morphological structures and physicochemical properties of the microspheres were investigated. The findings of porous microspheres particle size ranged from 150 to 200 μm. The encapsulation efficiency and loading capacity were of 90.32% and 20.54%. Respectively, prepared using polyvinyl alcohol (0.16%), ethyl cellulose and quercetin (41:19, w/w), stirred in dichloromethane/ethanol solution (4:1, v/v). The scanning electron microscopy confirmed porous structure of the microsphere surface. Fourier transform infrared spectroscopy revealed structural changes between quercetin and ethyl cellulose. X-ray diffraction and thermal analysis showed that the encapsulated quercetin was amorphous. Compared with free quercetin, the antioxidant capacity and stability of quercetin in porous microspheres were significantly improved. This research reveals the development of porous microsphere carrier that facilitated improved antioxidant activity and stability of quercetin.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yan Guo,Min Li,Tang Zhou,Qidi Wu,Chao Liu,Sheng Li,Quan Feng,Haihua Wang,Zhenyu Li
Simultaneously removing various contaminants from contaminated water with a low energy consumption remains challenging. Herein, we employed bacterial cellulose hydrogel (BCH) as a substrate and synthesized ZnO nanoflowers within its three-dimensional network via an in-situ synthesis approach, resulting in the formation of BCH/ZnO. Subsequently, the BCH/ZnO was processed through freeze-drying and heat-drying to fabricate a composite aerogel (BCA/ZnO-3) and a composite membrane (BCM/ZnO-3), respectively. The BCA/ZnO-3 exhibited remarkable adsorption capacities towards various contaminants and demonstrated a treatment capacity of 773.8 L m −2 in an injection-driven filter for real contaminated water. Meanwhile, the BCM/ZnO-3 was applied in ultrafiltration (UF) system with hydraulic pressure. At 2.5 bar, it exhibited a flux of 29.19 L m −2 h −1 and had a treatment capacity of 674 L m −2 for contaminated water. Moreover, the BCM/ZnO-3 showed a favorable antifouling performance and reusability. Experimental results and theoretical calculations revealed that both BCA/ZnO-3 and BCM/ZnO-3 perform UF and adsorption based on size screening, electrostatic interaction and hydrogen bonding. These processes simultaneously eliminated microorganisms, heavy metals, and small organic molecules (e.g., dyes and antibiotics). Moreover, these environmentally friendly materials can biodegrade in natural environments and have less environmental impact than other adsorptive membranes. Overall, the biohydrogel-based materials are promising alternatives to conventional petroleum-based membranes, offering effective and energy-efficient solutions for diverse water purification needs.
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Membranes
·
2025
·Vol. 15
·期 3
·84
·
IF 3.6
Shurui Shao,Maoyu Liu,Baifu Tao,Kayode Hassan Lasisi,Wenqiao Meng,Xing Wu,Kaisong Zhang
As a porous crystalline material, covalent organic frameworks (COFs) have attracted significant attention due to their extraordinary features, such as an ordered pore structure and excellent stability. Synthesized through the aldehyde amine condensation reaction, TpPa-1 COFs (Triformylphloroglucinol-p-Phenylenediamine-1 COFs) were blended with cellulose acetate (CA) to form a casting solution. The TpPa-1 COF/CA ultrafiltration membrane was then prepared using the non-solvent-induced phase inversion (NIPS) method. The influence of TpPa-1 COFs content on the hydrophilicity, stability and filtration performance of the modified membrane was studied. Due to the hydrophilic groups in TpPa-1 COFs and the network structure formed by covalent bonds, the modified CA membranes exhibited higher hydrophilicity and lower protein adsorption compared with the pristine CA membrane. The porous crystalline structure of TpPa-1 COFs increased the water permeation path in the CA membrane, improving the permeability of the modified membrane while maintaining an outstanding bovine serum albumin (BSA) rejection. Furthermore, the addition of TpPa-1 COFs reduced protein adsorption on the CA membrane and overcame the trade-off between permeability and selectivity in CA membrane bioseparation applications. This approach provides a sustainable method for enhancing membrane performance while enhancing the application of membranes in protein purification.
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BIOPROCESS AND BIOSYSTEMS ENGINEERING
·
2024
·Vol. 47
·期 7
·1071-1080
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IF 3.5
Sun Liqun,Xu Chaozhong,Tong Shanshan,Gu Xiaoli
This study investigates the immobilization of cellulase on zeolitic imidazolate frameworks (ZIFs) by physical adsorption, specifically the ZIF-8-NH 2 and Fe 3 O 4 @ZIF-8-NH 2 , to enhance enzymatic hydrolysis efficiency. The immobilization process was thoroughly analyzed, including optimization of conditions and characterization of ZIF carriers and immobilized enzymes. The impacts on the catalytic activity of cellulase under various temperatures, pH levels, and storage conditions were examined. Additionally, the reusability of the immobilized enzyme was assessed. Results showed the cellulase immobilized on Fe 3 O 4 @ZIF-8-NH 2 exhibited a high loading capacity of 339.64 mg/g, surpassing previous studies. Its relative enzymatic activity was found to be 71.39%. Additionally, this immobilized enzyme system demonstrates robust reusability, retaining 68.42% of its initial activity even after 10 cycles. These findings underscore the potential of Fe 3 O 4 @ZIF-8-NH 2 as a highly efficient platform for cellulase immobilization, with promising implications for lignocellulosic biorefinery.
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Crystals
·
2024
·Vol. 14
·期 3
·219
·
IF 2.4
Wang Wei,Yangguang Li,Ningning Tian,Tian Xie,Dengpan Nie,Hongyan Li,Hongdong Quan,Xiuguo Yang,Luqian Ye,Xiaohe Li,Kangli Li,Ye Gao
The crystal habit of pentaerythritol (PE) crystals is usually rod-shaped, which may lead to low bulk density and bad flowability compared with low aspect ratio crystals. In this study, dipentaerythritol (DPE), methylcellulose (MC), and hydroxypropyl methylcellulose (HPMC) were selected as additives to modify the morphology of PE crystals. In the presence of DPE, the bulk density of PE crystals was improved, and the aspect ratio was decreased. The modified attachment energy (AE) model was conducted to analyze changes in PE crystal habits in the presence of DPE, which characterizes the intensity of the interaction between DPE molecules and PE crystal faces. Spherical pentaerythritol crystals can be successfully prepared by adding MC and HPMC solution, and the formation mechanism can be divided into five steps.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Wenlu Luo,Wei Lu,Qin Xiang,Lianlong Zhan,Xun Yang,Hanbing Jiang,Cailin Xu,Hui He
The utilization of the solar-driven CO 2 desorption of carbon capture materials opens a promising avenue to reduce energy consumption in the carbon capture process. A crucial aspect is the careful coordination of materials' adsorption capacity and regeneration temperature. In this study, a photothermal responsive carbon capture material was developed by incorporating a photothermal responsive cellulose nanofiber matrix skeleton with a temperature-sensitive Pluronic® F-127 and polyethyleneimine. These components formed a staggered network through crosslinking with epichlorohydrin. The devised preparation strategy demonstrated a remarkable conversion rate of 99% for the reaction reagents. The resulting carbon capture material exhibited a high amino density of 14.18 mmol/g and a substantial adsorption capacity of 6.92 mmol/g. Notably, the shrinkage of Pluronic® F-127 molecular chains at elevated temperatures led to an increased surface electrostatic potential and the passivation of amino groups. This transformation endowed the material with a solar-driven regeneration temperature as low as 55 °C, representing an efficient approach to reduce energy consumption during the regeneration process of carbon capture materials.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yijiang You,Li Liu,Guangfeng Wu
With the rapid advancement of the printing and dyeing industry, water pollution has emerged as a prominent environmental issue, particularly dye wastewater. In order to construct polymeric adsorbents with rich functional groups for efficient adsorption of dye wastewater, hydrogel spherical adsorbent SA/CMC-Kaolin was prepared by using sodium alginate (SA) as the hydrogel skeleton material, carboxymethyl cellulose (CMC) and kaolin as the strength-reinforcing materials. FT-IR, SEM, XRD, and TG were utilized for comprehensive characterization of the microbeads' characteristics and adsorption mechanism. SA/CMC-K composite microbeads were investigated for the adsorption characteristics of methylene blue (MB) in aqueous solution. Adsorption kinetics and thermodynamic models were employed to analyze the adsorption process. Under optimal conditions, SA/CMC-K microbeads demonstrated superior adsorption efficiency for MB, with a maximum adsorption capacity of 84.63 mg/g, a bio-based adsorbent with a high adsorption capacity. The adsorption process exhibited better agreement with the Langmuir isotherm equation and the pseudo-second-order kinetic model. Besides, SA/CMC-K composite microbeads maintained 71.74% adsorption efficiency after five cycles. Overall, the prepared microbeads, which are economical and environmentally friendly, are promising for the absorption of dye wastewater.
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FOOD CHEMISTRY
·
2024
·
IF 8.5
Qiyue Zhao,Hong-Man Hou,Gong-Liang Zhang,Hongshun Hao,Bei-wei Zhu,Jingran Bi
Heterocyclic aromatic amines (HAAs), arising as chemical derivatives during the high-temperature culinary treatment of proteinaceous comestibles, exhibit notable carcinogenic potential. In this paper, a composite aerogel (AG D-UiO-66 ) with high-capacity and fast adsorption of HAAs was made with anchoring defective UiO-66 (D-UiO-66) mediated by lauric acid on the backbone of cellulose nanofibers (CNF). AG D-UiO-66 with hierarchical porosity reduced the mass transfer efficiency for the adsorption of HAAs and achieved high adsorption amount (0.84–1.05 μmol/g) and fast adsorption (15 min). The isothermal adsorption model demonstrated that AG D-UiO-66 belonged to a multilayer adsorption mechanism for HAAs. Furthermore, AG D-UiO-66 was successfully used to adsorb 12 HAAs in different food (roasted beef, roasted pork, roasted salmon and marinade) with high recoveries of 94.65%–104.43%. The intrinsic potential of AG D-UiO-66 demonstrated that it could be widely applicable to the adsorption of HAAs in foods.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Congcong Wang,Jingjing Zhang,Qian Fu,Chenxi Niu,Yvtao Xu,Youhui Chen,Zaowen Zhao,Lingbin Lu
Due to marvelous sensitivity and flexibility, conductive hydrogels are popularly used as strain sensors in intelligent skin and wearable electronic devices fields. However, hydrogel tends to be destroyed after long-term use or in accident, leading to performance degradation. Herein, we developed an environmental-friendly Ti-containing conductive hydrogel. The hydrogel network was constructed via a simple two-step method with coordination reaction and amidation reaction based on a metal ion precursor from transitional coordination. The synergies of reversible metal coordination bonds and dynamic hydrogen bonds endowed the hydrogel with excellent self-healing properties (3 h, 93.66 %), tensile properties (136.46 kPa), compression properties (1.122 MPa), and anti-fatigue performance. At the same time, the hydrogel showed excellent self-adhesion, even underwater. Due to Ti 4+ , electrical conductivity of the hydrogel was visibly enhanced (σ = 25.64 mS·cm −1 ), which resulted in fast response (TS [time sensitivity] = 24.78 s −1 ) and short recovery time (153 ms). As a flexible strain sensor, the hydrogel with stable conductivity and high sensitivity could precisely detect and distinguish a series of human motions, even different letter pronunciations. These remarkable features make it a promising application in the fields of intelligent skin and wearable electronic devices.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Ning Yan,Ting Gao,Li Hua,Fan Xie,Rui-Xin Liu,Ding-Gen Hu,Zhao-Qing Lu
Petroleum-based electret air filtration materials can capture particulate matter efficiently by electrostatic adsorption, but the non-degradation of such materials causes environmental pollution. Cellulose acetate (CA) is an environmentally friendly filtration material with great application potential. However, its polyhydroxyl structure and weak polarization make it difficult to construct high electrostatic, which is not conducive to filtration. Here, we report a molecular chain spacing expansion strategy for achieving high-performance cellulose-based electrospun materials for air filtration by coordination with copper ion (Cu 2+ ). Through the coordination we show that the restriction of CA hydrogen bonding network for its dipole orientation polarization under the external electric field (independent polarization properties) is weakened, i.e., its dipole moment was greatly improved from 5.23 debye to 8.86 debye. Due to its high surface potential (7.97 kV), the Cu 2+ -coordinated CA film exhibits excellent filtration performance with a high PM 0.3 removal efficiency of 99.15 % and a low pressure drop of 37.3 Pa, which is 39.98 % higher than that of the pure CA film. Moreover, by comparing the filtration performance of particles with different sizes (PM 0.3, PM 0.5, PM 1.0), it is found that the electrostatic adsorption works better for smaller particles.
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ACS Applied Polymer Materials
·
2024
·
IF 4.4
Jinfei Wang,Jinni Luo,Zunkai Jia,Yuan Chen,Chenglong Li,Kejun Zhong,Jie Xiang,Pengxiang Jia
A high strength, swelling resistance, and conductive hydrogel with excellent photothermal effect and antimicrobial property is prepared based on a cellulose frame. First, cellulose is dissolved in a NaOH/urea aqueous solution. The cellulose solution is self-assembled in an ethanol environment to form a cellulose frame. The frame is then immersed in the acrylamide (AM) and 2-methylacryloxyethyl phosphocholine (MPC) solution. A Cel-PAxMy cellulose hydrogel is prepared by in situ copolymerization of AM and MPC. Lastly, Cel-PAxMy hydrogel is soaked in a tannic acid/ferric chloride (TA@Fe3+) solution to prepare the TA@Fe3+-Cel-PAxMy hydrogel. The obtained hydrogel shows excellent mechanical strength (toughness 600 KJ/m3, Young’s modulus 225 KJ/m3) due to the presence of a rigid cellulose frame. The introduction of TA@Fe3+ not only increases the cross-linking density of hydrogels, making hydrogels have extraordinary swelling resistance (swelling ratio 50 ± 20%), but also endows the hydrogels with excellent electrical conductivity (conductivity 1.0 S/m, GF 0.75, response time 572.27 ms), good near-infrared photothermal effect, and outstanding antimicrobial property. This work proposes an effective strategy for the development of high strength, swelling resistance, antimicrobial and conductive zwitterionic hydrogel, which exhibits significant promise for wearable sensors and electronic devices.
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Journal of Energy Storage
·
2024
·
IF 8.9
Tao Zhang,Kunbin Kuang,Lilai Lu,Qingshan Li,Yuanna Sun,He Miao
As flexible electronics continue to develop, the demand for low-cost, high-security, and long-lasting deformable energy sources is imperative. Gel-based zinc-air batteries have received much attention as promising candidates due to the flexibility, while most hydrogel electrolytes will lose their deformability after absorbing alkaline electrolyte. Thus, PANa-BC (Bacterial Cellulose) gel electrolytes, with internal physical entanglement of PANa and BC fibers and hydrogen bonding interactions, are prepared by solution copolymerization and swelling. The hydrogel exhibits superior mechanical strength and toughness, as well as convincing ionic conductivity. After optimizing the battery structure and catalyst ratios, the hydrogel-based bendable zinc-air battery delivers the power density of 49 mWcm −2 , high specific capacity (726.6 mAhg −1 ) and stable cycle performance. As expected, the battery shows stable electrochemical properties over a wide range of bending angles, suggesting their high desirability as wearable power sources.
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