CELLULOSE
·
2025
·
IF 4.8
Hu Zhengchuan,Wu You,Tang Li,Zhou Weibo,Wang Jieqiong,Wu Wei,Li Ming,Wang Lu
Wood sponges, characterized by their low density and highly anisotropic porous structure, demonstrate significant potential for wearable and flexible electronic devices. However, fabricating multifunctional integrated sensors with wide operating ranges and linear response characteristics remains a challenge. In this study, we propose a polyaniline/graphene-modified wood sponge piezoresistive sensing material (PGWS). The synergistic interaction between polyaniline (PANI) microspheres and reduced graphene oxide (rGO) nanosheets enhances the structural stability of the sensor. The PGWS material exhibits high compressibility (up to 70% strain), excellent elasticity (95.36% height retention after 200 compression cycles), high sensitivity, and a broad pressure detection range (0–200 kPa). These advancements significantly improve the application prospects of wood sponge-based piezoresistive sensors in next-generation flexible electronics.
研究领域:
材料科学
·
电子工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2022
·
IF 19.069
Kun Zhang,Ling Cai,Azadeh Nilghaz,Guangxue Chen,Xiaofang Wan,Junfei Tian
A promising strategy to use alkali and alkaline earth metals chloride as an ideal high-efficiency atmospheric moisture catcher has been introduced in hygroelectric generator (HEG) engineering. However, the achievement of high output power density for commercial electronics by most HEGs is challenging. To address this issue, a novel approach is proposed to generate highly efficient HEGs. The approach relies on the use of carbon black (CB) ink to modify the surface of wood sponge with an LiCl solution, and copper electrodes to generate a highly efficient device with the power output of 216 μW. Specifically, the primary battery system composed of Cu electrodes and CB ink in water interface can compensate for decrease in streaming potential to further improve the output performance of the system, and successfully solve the problem of low output power of HEGs as an independent power source. Furthermore, the influences of different electrodes on electricity generation are comprehensively and systematically investigated for the first time. Moreover, the open-circuit voltage ( V OC ) of a HEG can be boosted to 33 V by simple integration in series, and it can drive commercial electronic devices in various weather conditions. It is anticipated that this new approach will facilitate the growth of green electronics in the future.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2018
·
IF 13.709
Hao Guan,Zhiyong Cheng,Xiaoqing Wang
Aerogels derived from nanocellulose have emerged as attractive absorbents for cleaning up oil spills and organic pollutants due to their lightweight, exceptional absorption capacity, and sustainability. However, the majority of the nanocellulose aerogels based on the bottom-up fabrication process still lack sufficient mechanical robustness because of their disordered architecture with randomly assembled cellulose nanofibrils, which is an obstacle to their practical application as oil absorbents. Herein, we report an effective strategy to create anisotropic cellulose-based wood sponges with a special spring-like lamellar structure directly from natural balsa wood. The selective removal of lignin and hemicelluloses via chemical treatment broke the thin cell walls of natural wood, leading to a lamellar structure with wave-like stacked layers upon freeze-drying. A subsequent silylation reaction allowed the growth of polysiloxane coatings on the skeleton surface. The resulting silylated wood sponge exhibited high mechanical compressibility (reversible compression of 60%) and elastic recovery (∼99% height retention after 100 cycles at 40% strain). The wood sponge showed excellent oil/water absorption selectivity with a high oil absorption capacity of 41 g g–1. Moreover, the absorbed oils can be recovered by simple mechanical squeezing, and the porous sponge maintained a high oil-absorption capacity upon multiple squeezing-absorption cycles, displaying excellent recyclability. Taking advantage of the unidirectional liquid transport of the porous sponge, an oil-collecting device was successfully designed to continuously separate contaminants from water. Such an easy, low-cost, and scalable top-down approach holds great potential for developing effective and reusable oil absorbents for oil/water separation.
研究领域:
材料科学
·
环境科学
·
林业工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Xin Wang,Pan Jiang,Xinjian Dai,Hao Guan,Xiaoqing Wang
Developing high-performance metal-organic framework (MOF)-based composites with high loading and uniform distribution of MOF nanoparticles is crucial for their adsorption-associated applications but remains challenging due to the lack of ideal carriers. Herein, a novel MOF-based composite was developed by in situ growth of MIL-53(Al) crystals within the carboxylated wood sponge (CWS) derived from natural balsa wood. The conversion of the cellular structure of natural wood into a lamellar structure greatly enhances the accessibility of the wood scaffold, while the introduction of carboxyl groups onto the cellulose skeleton of the wood sponge encourages the selective growth of MIL-53(Al) crystals on the lamellae of CWS. The structural features of the obtained MIL-53(Al)@CWS were investigated with FT-IR, XRD, SEM, and N 2 adsorption/desorption isotherms. The MIL-53(Al) loading can be finely tuned by adjusting the concentration of the MOF precursor solutions, and an appropriate MIL-53(Al) loading of 23 wt% results in the uniform dispersion of MIL-53(Al) crystals within the wood sponge without agglomeration. Benefiting from the high loading of MIL-53(Al) and the unique lamellar channels of CWS, the developed MIL-53(Al)@CWS can effectively adsorb various organic dyes such as rhodamine B (RhB), methylene blue, Congo red, and methyl orange in water, with a high adsorption capacity of 135.82 mg g −1 for RhB. Density functional theory (DFT) calculations reveal the detailed dynamic diffusion pathways and the molecular interactions between RhB and MIL-53(Al). This work demonstrates the advantages and potentials of lamellar wood sponges as a promising host matrix in supporting MOF powders for adsorption-associated applications.
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
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 28
·10635-10645
·
IF 5.7
Jie Liang,Huinan Zhang,Qingchao Zhang,Yanli Liu,Bo Li,Junbin Zang,Xiyuan Cao,Zhidong Zhang,Libo Gao,Chenyang Xue
Electronic skin (e-skin) aims to mimic human skin functions, which could profoundly affect medical care and robots. However, it still faces challenges in simultaneously detecting and distinguishing pressure and temperature signals in real-time. Herein, a simple and sustainable strategy is proposed to fabricate a reduced graphene oxide (rGO)-coated wood sponge (rGO@WS) for a multifunctional sensor with high pressure and temperature properties. The prepared porous wood sponge presents high elasticity and superior durability. The added rGO endows the sponge with high conductivity and excellent fatigue resistance. The proposed sensor can realize high sensitivity (1.18 kPa−1), a large pressure range (0.2–100 kPa), a low detection limit and can also detect the temperature with a minimal detection limit of 0.6 K and a response time of 0.8 s. Due to the different response principles of piezoresistive and thermoelectric effects, pressure sensing performance and temperature sensing performance are independent. Meanwhile, a 4 × 4 pixel sensing array based on the rGO@WS sensor is fabricated to serve as e-skin to detect and distinguish pressure and temperature signals. This work sheds new light on the development of wearable devices and e-skin for health care.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
WOOD SCIENCE AND TECHNOLOGY
·
2022
·Vol. 56
·期 3
·691-702
·
IF 2.898
Wang Zhongguo,Zhang Xiong-Fei,Ding Meili,Yao Jianfeng
Wood sponges obtained by structure-retaining delignification of natural wood sheets are promising for CO 2 storage. Herein, lignin in balsa wood is selectively removed through chemical treatment, leading to a highly porous structure. To boost the CO 2 adsorption capacity, amine agents are grafted on the delignified wood via a condensation reaction. The resulting amine-grafted wood sponges exhibit hierarchical porosity and are mechanically resilient. A relatively high CO 2 uptake of 1.22 mmol g −1 (25 °C, 1 bar) is achieved due to the physisorption of hierarchical pores and chemisorption of high amine group loading. Such amine-grafted wood sponges fabricated from top-down strategy hold great potential to serve as renewable CO 2 capture 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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yang Yu,Ning Li,Chuanbin Wang,Zhanjun Cheng,Beibei Yan,Guanyi Chen,Li'an Hou,Shaobin Wang
The directional regulation of oxidation capacity in the carbon-based peroxymonosulfate (PMS) activation system is a promising strategy for wastewater purification. In this work, a novel iron cobalt and nitrogen co-doped carbonized wood sponge (FeCoNCWS) was developed. A superb catalytic performance for sulfamethoxazole (SMX) degradation (∼100.0%) was obtained within 30 min in FeCoNCWS800/PMS system at 60 °C. Besides, the reactive oxygen species (ROS) contribution was verified at different reaction temperatures. Specifically, the primary roles of sulfate and hydroxyl radicals (SO 4 − and OH) in SMX removal weakened, while the secondary role of singlet oxygen ( 1 O 2 ) in SMX degradation was enhanced with the rise of reaction temperature in FeCoNCWS800/PMS system. Interestingly, defects, graphitic N and carbonyl (C O) groups were vital active sites for PMS activation to produce 1 O 2 , which was facilitated at higher reaction temperature. Besides, the metal sites were identified as PMS activators for SO 4 − and OH generation, which was promoted under lower reaction temperature. The findings revealed a novel internal temperature-dependent PMS activation mechanism, which can help to regulate the oxidation capacity of PMS activation system rationally for pollutant degradation.
研究领域:
环境科学
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Huicheng Dou,Ying Zhang,Hao Zhang,Yanan Wang,Jiaxing Li,Hao Zhong,Xueqi Chen,Minghui Guo
Water pollution caused by crude oil spills poses significant environmental concerns. In this work, multi-walled carbon nanotubes (MWCNTs) were dispersed as the carbon network on the elastic wood sponge (WS) and then encapsulated by hydrophobic polydimethylsiloxane (PDMS) coating to form a crude oil adsorbent, PDMS@CNT-WS. It demonstrated an elasticity of up to 90% compressive strain, while the height retention remained at 97% even after 100 cycles at 50% compressive strain. The shape-memory properties and 148°hydrophobic angle of the material allowed it to be repeatedly used. This is the first material to utilize sunlight and microwave as dual stimuli to absorb and recover spilled crude oil. PDMS@CNT-WS absorbed crude oil floating on water within about 80 s under 1 sun illumination. After condensation, the material was heated within only 4 s in a microwave oven at 2450 MHz, and the crude oil in the interior could be recovered by simply squeezing the material. This new approach provided a source of energy conversion for crude oil adsorbents with thermal management capabilities to clean up crude oil spills.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 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）