ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2022
·Vol. 30
·期 7
·17994-18013
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IF 5.19
Liu Wei,Zhang Jingwen,Dai Zhao,Luo Ning,Qu Jing,Sun Peiyun,Li Da,Liao Weilong,Wei Junfu,Zhang Huan
Ozone air pollution poses a serious threat to human health and ecological environment. Manganese oxide (MnOx) is a popular material for ozone decomposition with excellent catalytic performance. However, the catalytic activity may be reduced under high-humidity conditions because of oxygen vacancy of MnOx from the water evaporation. In this paper, a new type of MnOx/poly(acrylic acid- co -divinylbenzene) (PAA) catalyst with MnOx supported on hollow PAA was successfully prepared, which greatly improved the ozone decomposition efficiency under high humidity. It was shown that when the acrylic acid (AA) content was more than 50%, the PAA polymer layer was hydrophilic and the ozone decomposition efficiency would keep high activity for both the low- and high-humidity conditions. The best performance of ozone decomposition was identified for the methanol reduction and AA content of 60%, in which the efficiencies reached 94.5% and 85% at 50% and 90% humidity levels, respectively. It is the synergetic effect of the hydrophilic PAA support and hollow structure that retains and improves the decomposition activity, which can absorb the water vapor molecules and increase the ozone retention time. Therefore, the hollow microsphere catalyst prepared in this paper has great potential in solving the problem of ozone air pollution.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Wei Tan,Feng Zhang,Kai Yu,Fengyu Qu
Achieving proton-conducting solids with high proton conductivity at subzero temperatures remains a serious challenge. Thus, it is indispensable to develop the composites with high conductivity ranging from subzero to medium temperatures (243–343 K). Graphene oxide (GO) as an alternative matrix can provide the rich oxygen-containing groups. Thus, we prepared a series of proton conductors by covalently linking phosphate units onto the amino-functionalized GO monoliths (denoted NGOM-P), the structures of which are determined by FT-IR, XPS , XRD and Raman characterization techniques. Further, the fast proton transfer in effective acid-base networks in NGOM-P make the monolith achieve high proton conductivity from 2.61 × 10 −2 S cm −1 (243 K) to 0.68 S cm −1 (343 K) under 98% relative humidity (RH).
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Libo Yang,Hao Fu,Lei Dong,Mingyue Ma,Yuxiang Deng,Hanyu Wu,Yuezhou Wei,Shunyan Ning,Xinpeng Wang
The effective capture of radioiodine vapor is of paramount importance in mitigating environmental radiation risks associated with spent fuel reprocessing, as well as for thyroid diagnosis and treatment. However, adsorbents used for iodine vapor capture are susceptible to the adverse effects of water vapor, leading to significant reductions in adsorption efficiency. This study presents the design and synthesis of polyimide (PI) aerogels integrated with in situ-grown SnS 2 through a hydrothermal approach. The shape of SnS 2 /PI aerogels can be adjusted via mold manipulation, while also possessing desirable mechanical strength. The SnS 2 /PI-2 aerogel exhibits a remarkable maximum adsorption capacity of 1167 mg/g in a dry environment, with only a marginal 12.4 % decrease observed in a high-humidity environment (74 % relative humidity, R.H.), as assessed by batch experiments. During application in the fixed-bed column, the SnS 2 /PI-2 aerogel demonstrates a significant adsorption capacity of 1070 mg/g at 75 °C. Monitoring conducted for 7 consecutive days post-adsorption confirms the absence of iodine release. This is attributed to the reduction of captured I 2 by the SnS 2 /PI-2 aerogel, forming the stable crystal SnI 4 , thereby preventing its release. Therefore, the SnS 2 /PI-2 aerogels exhibit excellent humidity resistance, thermal stability, and mechanical properties, rendering them highly suitable for capturing radioiodine vapor under complex conditions. This work offers insights into developing efficient aerogel adsorbents for treating radioactive iodine exhaust gases with high humidity in fixed-bed columns or decay tanks.
研究领域:
材料科学
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环境科学
·
核技术
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DOI
高影响因子
Nano Energy
·
2023
·
IF 17.6
Wanglin Zhang,Xianghui Chen,Jiamin Zhao,Xinyue Wang,Xiuzhen Li,Tao Liu,Bin Luo,Ying Qin,Song Zhang,Mingchao Chi,Shuangfei Wang,Shuangxi Nie
Triboelectric nanogenerators (TENGs) have ideal applications in the field of self-powered sensing thanks to their simple structure and flexible working mode. However, the weak operating properties of triboelectric materials in high humidity environments limit the wide application of TENG as sensors. To solve this problem, this work prepared hydrophilic triboelectric materials with natural cellulose as the template and used them for self-powered sensing in high humidity environments. Thanks to the interconnected network of the cellulose scaffold, the complex morphology of the material constructed in concert with Ti 3 C 2 T x during templating provides abundant adsorption sites for water molecules. Over a broad humidity range (40%−90% relative humidity (RH)), the moisture-sensitive triboelectric material can sustain outstanding performance in 150 s with high sensitivity (0.8/1%). The cellulose template-based triboelectric material transmits electrical signals to the user interface wirelessly, enabling self-powered sensing in high humidity environments. This study provides a novel strategy for the design and preparation of high-performance triboelectric materials using cellulose as a template and promotes the study of self-powered sensing in high humidity environments.
研究领域:
材料科学
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传感器技术
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Ruimeng Wang,Xinqi Luan,Jingyu Bao,Yaseen Muhammad,Syed Jalil Shah,Guanchen Wang,Jing Li,Guoyou Lin,Hongbing Ji,Zhenxia Zhao
High capacity adsorption of volatile organic compounds (VOCs) in high humidity environment is a crux but challenge for atmospheric VOCs governance. In this work, tubular carbonized N-doped polymers (TCNP) were implanted into MIL-101 via N-Cr-O interface self-assembly, enabling high adsorption for vapor toluene in high humidity. Through mechanical ball milling and carbonization, Cr ions were preloaded on TCNP to form highly dispersed 3–5 nm Cr-N crystallite as anchors for growing MIL-101(Cr/Cu). Newly constructed smaller micropores of 6.8 Å with aromatic rings/N sites at the interface and doped Cu ions in MOF framework synergistically enhanced π-π conjugation and electrostatic interaction for C 7 H 8 molecules. This endowed [TCNP 5 /MIL(Cr/Cu)] N-Cr 2.9 times higher toluene uptake (6.34 mmol/g) at low vapor pressure ( P / P 0 = 0.02) and 1.9 times diffusivity under high humidity (60% RH) than that of MIL-101(Cr) at 298 K. The adsorption breakthrough curves for vaporous toluene showed that TCNP@MIL-101(Cr/Cu) exhibited outstandingly higher adsorption equilibrium capacity (2.7 mmol/g) under 80% RH, corresponding to approximately 2–10 times than those of reported state-of-the-art adsorbents under similar conditions. This study provided a novel interface construction strategy for hydrophobic MOF composites, which supplied deeper understanding for VOCs adsorption and promoted MOFs practical application in VOCs capture under humid environment.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
FIBERS AND POLYMERS
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2025
·
IF 2.3
Guo Xiaoyu,Feng Changjian,Huang Lilan,Wang Hongqiang,Liu Fang,Li Jiao
Polylactic acid (PLA) membranes offer advantages such as biodegradability, non-toxicity, and biocompatibility for oil–water separation. However, it remains challenging to fabricate PLA membranes with sufficient mechanical strength and hydrophobicity for practical applications. In this study, a superhydrophobic fibrous membrane based on PLA and Polybutylene terephthalate adipate (PBAT) is prepared via electrospinning, followed by a high-humidity treatment. The effects of PBAT content and high humidity treatment on the morphology, hydrophobicity, and mechanical properties of PBAT/PLA composite fiber membranes are investigated. The results show that the introduction of PBAT effectively enhances the fiber diameter, crystallization, hydrophobicity, and mechanical properties of PBAT/PLA fibers. Moreover, the high humidity treatment further improves the mechanical and hydrophobic properties of the membranes. When 0.2 g of PBAT is added and the high humidity treatment lasts for 24 h, the resulting PBAT/PLA fibrous membrane exhibits an outstanding water contact angle (WCA) of 158.23°, tensile strength of 3.802 MPa, excellent oil–water separation flux (6500 L/(m 2 ·h)), and efficiency of 99.80%, demonstrating great potential for oil–water separation applications.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 52
·2410762
·
IF 18.5
Ao Li,Jun Xu,Shengtao Zhou,Zhaohui Zhang,Daxian Cao,Bin Wang,Wenhua Gao,Wei Zhang,Fengshan Zhang
Highlighted with bio-degradability, paper-based flexible pressure sensors receive significant attention in the field of wearable devices for a sustainable future. However, it remains a challenge to possess considerable sensing performance in high humidity and underwater environments, because its structure rapidly breaks down after the hydrophilic cellulose absorbs water. In this study, a facile chemical vapor deposition method is employed to conformally coat a thin hydrophobic layer onto the cellulose fibers, resulting in an encapsulating paper with high moisture tolerance. The well-maintained porous structure reserves the superior breathability of the paper. A micro-convex-structured sensor layer impregnated with MXene serves as the sensing layer. As a result, an all-paper-based pressure sensor with high moisture tolerance and breathability is fabricated. This sensor features a broad sensing range (0–60 kPa), acceptable sensitivities (39.58 kPa −1 (0–1.01 kPa), 11.95 kPa −1 (1.01–60 kPa)), a low detection limit of ≈2.8 Pa, response and recovery time (93 and 69 ms), reliable hydrophobic breathability, and excellent repeatability (10 000 cycles). Moreover, this sensor can be safely worn on human skin and can monitor physiological signals in real-time in different environments (including air, humid environments, and even underwater), providing a reliable, economical, and environmentally friendly solution for wearable technology.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
·
IF 24.319
Syed Jalil Shah,Wenyuan Li,Ying Tang,Yang Hu,Shanliang Jiang,Hui He,Ruimeng Wang,Zhongxing Zhao,Zhenxia Zhao
Fabrication of broad-spectrum response photocatalysts in a controllable manner that can efficiently utilize solar light as much as possible remains a top priority target yet a challenging task. In this work, a facile approach of synchronous bottom-up growth was employed to construct UCNP/NMIL(Ti) nanohybrids via NH 2 -BDC (NH 2 -MIL-125-ligand) linkage between upconversion NaYbF 4 :Tm 3+ nanoparticles (~13-nm) and NH 2 -MIL-125. The ligand sharing integration strategy generated abundant oxygen vacancies and coordinatively-unsaturated-metal sites, efficiently enhanced light absorption, energy-transfer upconversion (UC-PL), photo-induced e - / h + generation, and their separation (CV, EIS, Photocurrent-density). Consequently, UCNP/NMIL(Ti) exhibited excellent acetaldehyde photodegradation activity, with 12.5–77.0-folds higher rate constants ( k a ) than those of state-of-the-art photocatalysts under visible light and high humidity. Furthermore, the photocatalytic activity of UCNP/NMIL(Ti) only declined from 96.0% to 92.5% after five cycling-runs, demonstrating its remarkable photo-catalytic stability. Considering these attributes, the current strategy provides an avenue to synthesize efficient UCNPs/MOF composites for widespread usage in a variety of commercial applications.
研究领域:
材料科学
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环境科学
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化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 13
·1-12
·
IF 2.8
Liu Guoqiang,Xiong Xiaoyan,He Yuan,Gong Yunpeng,Li Siyi,Jin Tao,Chen Yufang
Triethylamine (TEA) sensors are an effective and powerful tool for real-time monitoring of TEA, and play an important role in early warning of production processes, environmental atmospheric monitoring and human health protection. In this paper, SnO 2 /ZnO complex oxide was prepared by calcining bimetallic organic frameworks (BMOFs) to improve both the selectivity, sensitivity and accuracy of TEA-sensing materials and devices. The results show that the obtained 5Sn5Zn complex oxide prepared by mol (Sn):mol (Zn) = 1:1 has excellent selective responsiveness, repeatability and longtime reliability stability to TEA gas at 270 °C Besides, the 5Sn5Zn complex oxide exhibits a rapid response/recovery performance to TEA at 100 ppm concentration ( T res / T rec = 4 s/60 s separately), especially at the high humidity of 40–90% relative humidity (RH), and the response degree of the 5Sn5Zn complex oxide to TEA only decreases by 17%. This may be the best TEA selective response stability achieved by SnO 2 /ZnO complex oxide material under high humidity conditions.
研究领域:
材料科学
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环境科学
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Hui Wang,Yutao Liu,Yongheng Ren,Siyuan Peng,Jiayou Liao,Jinping Li,Libo Li
Membrane technology is a promising candidate for ethylene/ethane (C 2 H 4 /C 2 H 6 ) separation, but the separation factor and long-term stability of commercially available polymer membranes remain still insufficient to meet industrial requirements. Incorporating facilitated metal-ion carriers or unsaturated metal sites of fillers into polymers shows exceptional C 2 H 4 /C 2 H 6 separation efficiency due to the intensified olefin-favorable sorption . However, their separation performance usually dropped within a few hours due to the inactivation of the facilitated transport carrier or poisoning of unsaturated sites in presence of water vapor . Herein, we adopt a facile and effective method to prepare long-term stable Silicalite-1@Ag (S-1@Ag) mixed matrix membranes (MMM) by in-situ embedding the vulnerable carrier Ag + into the pores of the hydrophobic zeolite to protect the Ag + from deactivation. The 12 wt% S-1@Ag filler uniformly dispersing within the commercial 6FDA-DAM exhibits superior separation performance that surpasses the 2013 upper bound in terms of C 2 H 4 permeability of 29.74 barrer and C 2 H 4 /C 2 H 6 selectivity up to 7.66 for equimolar mixed gas. Furthermore, the hydrophobicity nature and framework shielding towards Ag + of S-1 guarantees the excellent almost 2-months stable separation of C 2 H 4 /C 2 H 6 by S-1@Ag MMMs under the high relative humidity conditions, demonstrating its potential for industrial applications.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2024
·
IF 8
Qianyu Yang,Dengtian Li,Chunyu Wu,Jiawei Wang,Tao Wang,Yongsheng Zhang,Wei-Ping Pan
The H 2 O content in the flue gas seriously inhibits the application of activated carbon injection adsorption mercury technology. Hydrophobic activated carbon was prepared by hexamethyldisiloxane (HMDSO) vapour deposition, the contact angle of water for hydrophobically modified AC increased from 42° to 143°, and H 2 O adsorption capacity decreased from 17.28 mg/g to 3.05 mg/g when relative humidity was 95%. The simulation results of water channels show that the number of water molecules escaping from the modified AC loaded with hydrophobic functional groups increased by 325%. When the water vapour content was 30%, the mercury removal efficiency of modified AC increased from 58.82% to 89.60% compared with AC, and the adsorption capacity increased by 10.6 μg/g. In high-humidity environments, NO and SO 2 can produce corresponding acids for oxidising Hg 0 , thereby enhancing the adsorption efficiency of Hg 0 , while NH 3 completes with Hg 0 for the active sites on the surface of AC, which has an inhibitory effect.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2024
·
IF 16.8
Chunqi Jiao,Chao Li,Jiaji Yue,Leping Li,Huijie Yang,Yehan Tao,Jie Lu,Yanna Lv,Haisong Wang,Mingqian Tan,Jian Du
Eco-friendly cellulosic fibers-based triboelectric nanogenerators (TENGs) are enormously and increasingly demanded for self-powered flexible electronics. However, under high moisture conditions (e.g. sweat, sailing and rain day), the mechanical behaviors of hydrophilic paper were severely reduced due to the weak wet strength and the cellulosic paper-based sensors were easily destroyed under external force, leading to the device failure and invalid signal acquisition. Herein, an industrial-friendly polyethylenimine (PEI)-assisted pulping strategy was developed to produce advanced cellulosic papers, which possessed reinforced wet strength and tribopositive performance. During pulping procedure, the cationic PEI molecules could be quickly in situ bonded onto the surface of fibers under electrostatic interaction and the interfacial interaction between fibers was significantly enhanced through the formation of hydrogen bonds between the amino groups on PEI and the hydroxyl groups on cellulose fibers . The wet strength was significantly enhanced from 1.93 MPa for pristine paper to 8.33 MPa for cellulose/PEI 1.5% with an enhancement of 4.32 times. Moreover, originating from the enhanced dielectric behaviors upon the introduction of PEI, the optimized cellulose/PEI 1.5% TENG delivered the maximum V OC of 157.3 V, I SC of 3.47 μA, Q SC of 42.73 nC and instantaneously maximum power density of 145.93 mW·m −2 . Our findings proposed a new perspective for fabricating high-performance tribopositive cellulosic materials that withstand high humid conditions.
研究领域:
材料科学
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能源技术
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生物工程
✓ 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）