Wangfang Deng

Qingdao Institute of Bioenergy and Bioprocess Technology

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Bin Li

Qingdao Institute of Bioenergy and Bioprocess Technology

Yidong Zhang

Qingdao Institute of Bioenergy and Bioprocess Technology

Meiyan Wu

Qingdao Institute of Bioenergy and Bioprocess Technology

Guang Yu

Qingdao Institute of Bioenergy and Bioprocess Technology

Qiu Cui

Chinese Academy of Sciences

Chao Liu

Qingdao University of Science and Technology

Zhexuan Liu

Central South University

Chunlin Xu

Åbo Akademi University

Yanjun Tang

Zhejiang Sci-Tech University

Pedram Fatehi

Lakehead University

Cooperative Institutions

Chinese Academy of Sciences

Qingdao Institute of Bioenergy and Bioprocess Technology

Dalian National Laboratory for Clean Energy

University of Chinese Academy of Sciences

Zhejiang Sci-Tech University

Qilu University of Technology

Åbo Akademi University

Qinghai New Energy (China)

Ningbo Institute of Industrial Technology

Qingdao University of Science and Technology

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Cellulose nanofibril as a crosslinker to reinforce the sodium alginate/chitosan hydrogels

International Journal of Biological Macromolecules (2021)

Wangfang Deng Yanjun Tang Jiangchun Mao Yiming Zhou Tianying Chen

10.1016/j.ijbiomac.2021.08.172

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Citations (75)

Cost-effective preparation of highly amorphous cellulose nanofibrils with TEMPO oxidation promoted by mild molten salt hydrate pretreatment

Industrial Crops and Products (2023)

Wangfang Deng Yidong Zhang Meiyan Wu Chao Liu Guang Yu

Nanocellulose

Dissolving pulp

10.1016/j.indcrop.2023.117455

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Citations (7)

A tough, stretchable, adhesive and electroconductive polyacrylamide hydrogel sensor incorporated with sulfonated nanocellulose and carbon nanotubes

International Journal of Biological Macromolecules (2024)

Wangfang Deng Yidong Zhang Meiyan Wu Chao Liu Mehdi Rahmaninia

Gauge factor

Nanocellulose

10.1016/j.ijbiomac.2024.135165

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Citations (5)

Robust, Scalable, and Cost-Effective Surface Carbonized Pulp Foam for Highly Efficient Solar Steam Generation

ACS Applied Materials & Interfaces (2023)

Yidong Zhang Wangfang Deng Meiyan Wu Zhexuan Liu Guang Yu

Recently, a solar-driven evaporator has been applied in seawater desalination, but the low stability, high cost, and complex fabrication limit its further application. Herein, we report a novel, low-cost, scalable, and easily fabricated pulp-natural rubber (PNR) foam with a unique porous structure, which was directly used as a solar-driven evaporator after facile surface carbonization. This surface carbonized PNR (CPNR) foam without interface adhesion or modification was composed of a top photothermal layer with light absorption ability and a bottom hydrophilic foam layer with a porous and interconnected network structure. Due to the strong light absorption ability (93.2%) of the carbonized top layer, together with the low thermal conductivity (0.1 W m K-1) and good water adsorption performance (9.9 g g-1) of the bottom layer, the evaporation rate and evaporation efficiency of the pulp foam evaporator under 1 sun of illumination attained 1.62 kg m-2 h-1 and 98.09%, respectively, which were much higher than those of most cellulose-based solar-driven evaporators. Furthermore, the CPNR foam evaporator with high cost-effectiveness presented high light-thermal conversion, heat localization, and good salt rejection properties due to the unique porous structure. Additionally, the CPNR foam evaporator exhibited potential applications in the treatments of simulated sewage, metal ion concentration, and seawater desalination. Its cost-effectiveness was clearly higher than that of most reported evaporators as well. Therefore, this novel, low-cost, and stable pulp foam evaporator demonstrated here can be a very promising solution for water desalination and purification.

10.1021/acsami.2c21260

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Citations (34)

Facile Fabrication of Cellulose Nanofibrils/Chitosan Beads as the Potential pH-Sensitive Drug Carriers

Polymers (2022)

Meiyan Wu Wangfang Deng Yidong Zhang Chao Chen Zhexuan Liu

It is highly desirable to develop a safe, highly efficient, and biodegradable drug carrier with an enhanced drug transport efficiency. Cellulose nanofibrils (CNF) and chitosan (CS) composite hydrogels are promising candidate carriers with biological compatibility and non-cytotoxicity. Herein, the CNF/CS composite beads were prepared by dissolving cellulose and CS in LiBr molten salt hydrate and regenerating in ethanol. This preparation method is facile and efficient, and the obtained porous CNF/CS beads with the weight ratio of 8:2 exhibited a large specific surface area, uniform micro-nano-sized pores, strong mechanical property, and water absorption-resistance. Moreover, these beads as drug (tetracycline hydrochloride, TH) carriers showed a higher encapsulation efficiency (47.4%) at the TH concentration of 5 mg/mL in 24 h, and a higher drug loading rate (12.0%) than pure CNF and other CNF/CS beads prepared with different ratios. In addition, the TH releasing behavior of CNF/CS (8:2) beads fitted well into the zero-order, first-order, and Higuchi models under an acid condition, indicating that the drug release of these pH-sensitive beads was mainly affected by drug concentration under an acid condition. Therefore, these CNF/CS beads have great potential to be used as drug carriers for medical applications.

Tetracycline Hydrochloride

Diclofenac Sodium

10.3390/polym14112286

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Citations (6)

Engineering pulp foam with highly improved water stability and multifunctional properties by incorporation of natural rubber and montmorillonite

Green Carbon (2024)

Yidong Zhang Wangfang Deng Meiyan Wu Guang Yu Zhexuan Liu

Considering the aim of carbon neutrality and reducing plastic pollution, lightweight porous materials with good thermal insulation and mechanical robustness derived from renewable resources are in high demand. Cellulose-based pulp foams (PFs) offer considerable potential applications in many fields; however, the cost-effective manufacturing of PFs with satisfactory properties remains challenging. Herein, we demonstrate a simple and low-cost strategy to prepare a novel pulp/natural rubber (PNR) foam by combining wood pulp fiber and natural rubber latex through wet foaming and oven drying, eliminating traditional freeze-drying and solvent exchange processes. The obtained PNR foam exhibited high porosity (98.4–99.1%), low density (14.1–24.0 mg/cm3), and excellent water stability (without disintegration under magnetic stirring for 14 days). Moreover, montmorillonite (MMT) was easily incorporated into the PNR during the preparation process, improving the mechanical strength and heat insulation of the obtained PNR-MMT foam. The optimized PNR-MMT foam could be compressed more than ten times without losing its resilience, exhibiting a compressive strength of 2.7 MPa at 80% strain, five times higher than that of pristine PF. Moreover, the PNR-MMT foam exhibited excellent flame retardant, good "spill" oil absorption, and good antibacterial properties towards Escherichia coli and Bacillus subtilis. Overall, this study provides a facile, sustainable, and low-cost route for manufacturing PNR-MMT foams with high resilience, good thermal insulation, excellent flame retardancy, and strong antibacterial properties, thus highlighting their usage potential in a broad range of applications.

Thermal Stability

10.1016/j.greenca.2024.03.005

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Citations (3)

Tailoring Functionality of Nanocellulose: Current Status and Critical Challenges

Nanomaterials (2023)

Yidong Zhang Wangfang Deng Meiyan Wu Mehdi Rahmaninia Chunlin Xu

Nanocellulose (NC) isolated from natural cellulose resources, which mainly includes cellulose nanofibril (CNF) and cellulose nanocrystal (CNC), has garnered increased attention in recent decades due to its outstanding physical and chemical properties. Various chemical modifications have been developed with the aim of surface-modifying NC for highly sophisticated applications. This review comprehensively summarizes the chemical modifications applied to NC so far in order to introduce new functionalities to the material, such as silanization, esterification, oxidation, etherification, grafting, coating, and others. The new functionalities obtained through such surface-modification methods include hydrophobicity, conductivity, antibacterial properties, and absorbability. In addition, the incorporation of NC in some functional materials, such as films, wearable sensors, cellulose nanospheres, aerogel, hydrogels, and nanocomposites, is discussed in relation to the tailoring of the functionality of NC. It should be pointed out that some issues need to be addressed during the preparation of NC and NC-based materials, such as the low reactivity of these raw materials, the difficulties involved in their scale-up, and their high energy and water consumption. Over the past decades, some methods have been developed, such as the use of pretreatment methods, the adaptation of low-cost starting raw materials, and the use of environmentally friendly chemicals, which support the practical application of NC and NC-based materials. Overall, it is believed that as a green, sustainable, and renewable nanomaterial, NC is will be suitable for large-scale applications in the future.

Nanocellulose

Nanomaterials

Surface Modification

Environmentally Friendly

Silanization

10.3390/nano13091489

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Citations (23)

A dual-functional lignin containing pulp foam for solar evaporation and contaminant adsorption

Desalination (2023)

Yidong Zhang Wangfang Deng Meiyan Wu Chao Liu Guang Yu

Solar Desalination

10.1016/j.desal.2023.117153

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Citations (7)

Preparation of Antibacterial Dialdehyde Nanocellulose Using LiBr·3H₂O Non-Dissolving Pretreatment Promoted Periodate Oxidation

ACS Sustainable Chemistry & Engineering (2023)

Yidong Zhang Wangfang Deng Chao Liu Fei Yan Meiyan Wu

Dialdehyde nanocellulose (DANC), obtained via periodate oxidation, has been widely used in foods, cosmetics, and biomedical fields due to its unique characteristics. However, the high-crystallinity and tight structure of cellulose retards the efficiency of periodate oxidation for producing DANC. Herein, a novel sustainable and clean approach with less energy consumption and low cost was developed through LiBr·3H2O (LBTH) non-dissolving pretreatment, which can shorten the oxidation time of the followed periodate oxidation and reduce the oxidant consumption. It was shown that the cellulose Iβ structure of hardwood dissolving pulp (HDP) was largely transformed into an amorphous structure after LBTH non-dissolving pretreatment for 30 min, and the corresponding crystallinity of HDP was reduced from 83.2 to 48.7%. After pretreatment for 60 min, the aldehyde group content of the obtained DANC increased by around 30% compared to the control without pretreatment while the operational cost was reduced by 45%. Moreover, the fabricated DANC showed strong antibacterial activity against both Escherichia coli and Bacillus subtilis. LBTH was recovered and reused, and the pretreatment effectiveness was also maintained. This study provides a sustainable, cost-effective, and clean approach for the preparation of DANC and will promote the application of cellulose nanomaterials.

Nanocellulose

Periodate

Dissolving pulp

Sodium periodate

10.1021/acssuschemeng.2c07746

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Citations (10)