REACTIVE & FUNCTIONAL POLYMERS
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2025
·
IF 5.1
Hui Ge,Jingjing Gao,Jie Wang,Zongmin Zhu
In this study, phosphorus-containing flame retardant (PDA) was synthesized from 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and protocatechualdehyde through simple chemical reactions, and subsequently employed as additive for the flame-retardant modification of epoxy resin (EP). The experimental results show that when the addition amount of PDA is 5 wt%, the peak heat release rate (pHRR) and total smoke emission (TSP) of the composite are significantly reduced by 50.9 % and 33.7 % respectively compared with pure EP, and it has successfully passed the UL94 V -0 rating. This excellent flame-retardant performance primarily stems from the synergistic interaction between the DOPO and protocatechualdehyde structural units in the PDA molecular architecture. The mechanism operates through a dual-action approach: radical scavenging to inhibit combustion chain reactions, and catalyzing the formation of a robust char layer that effectively impedes heat and oxygen transfer.
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JOURNAL OF THE ENERGY INSTITUTE
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2025
·
IF 6.2
Xiao-Yu Zhang,Wen-Lin Li,Zhi-Hao Ma,Sheng Li,Wei-Wei Yan,Li Li,Xing-Shun Cong,Xian-Yong Wei,Zhi-Xin Li
Reverse water-gas shift (RWGS) reaction has become an important strategy to couple application of carbon resources and hydrogen energy. However, Co-based supported catalysts in RWGS reaction consistently experience deactivation under high-temperature operation, predominantly caused by carbon deposition and metal sintering, which present major barriers to the commercial deployment. Here, crystallinity for La 2 O 2 CO 3 supports were modulated to govern the metal-support interaction and CO 2 adsorption performance on Co-based supported catalysts, thereby optimizing RWGS reaction performance. Despite of poorly crystallized La 2 O 2 CO 3 -1 fostered a stronger interaction with Co species, which detrimentally compromised CO 2 adsorption capacity and inherent anti-coking functionality of La 2 O 2 CO 3 themselves. In contrast, employing well-crystallized La 2 O 2 CO 3 -2 as the support yielded the Co/La 2 O 2 CO 3 -2 catalyst, exhibiting superior CO 2 adsorption, exceptional resistance to carbon deposition, outstanding activity, high CO selectivity, and remarkable stability—maintaining consistent CO 2 conversion and selectivity for over 100 h at 600°C. This crystallinity-driven strategy effectively balances the Co-La 2 O 2 CO 3 interaction, presenting a novel way to boost RWGS reaction performance over Co-based supported catalysts.
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Materials Today Bio
·
2025
·
IF 10.2
Chungchi Lee,Shanghui Huang,Huiling Liu,Xinyue He,Yifan Hao,Lizhi Zeng,Yuhan Li,Zijin Lv,Yiyang Xu,Rui Guo
Skin cancer, particularly malignant melanoma, is one of the most prevalent cancers globally, affecting millions annually. Traditional treatments like excision, chemotherapy, and immunotherapy often fail due to their invasiveness, toxicity, and poor drug delivery efficiency caused by skin barriers. Microneedles (MNs) offer a minimally invasive alternative, directly penetrating the skin to deliver drugs to tumor sites while minimizing side effects. However, their penetration depth is limited, and they do not address metastatic lesions. This study developed a gas motor-driven multi-responsive microneedle patch that significantly enhances subcutaneous drug penetration through a gas propulsion mechanism, greatly expanding the drug's diffusion range. Combined with photothermal therapy (PTT) and chemotherapy, this approach rapidly kills melanoma cells locally, induces immunogenic cell death (ICD), and uses anti-PD-1 antibodies (aPD-1) targeting immune checkpoints to enhance efficacy, overcome tumor immune escape, and activate systemic immune responses, achieving remote tumor suppression through local treatment only.
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DOI
PubMed
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Journal of Materials Chemistry C
·
2024
·
IF 5.7
Xin Huang,Tingting Zhang,Haomiao Zhang,Jiahui Yang,Tingting Cui,Rui Cheng,Jian Yu
In recent years, the rapid advancement of carbon dots (CDs) has established them as highly promising candidates in the field of fluorescent nanomaterials. Microfluidic technology, known for its efficiency in nanomaterial synthesis, has encountered significant challenges in the production of CDs due to insufficient fluid driving force, a consequence of the high-pressure conditions generated in microfluidic channels during high-temperature reactions. This limitation has significantly constrained the application of microfluidic technology in synthesis of CDs. To address this issue, this study developed a controllable, high-pressure gas driven microfluidic platform, enabling the large-scale production of CDs with multicolor fluorescence emission. By precisely regulating the pressure in feedstock tank and the opening of control valves, continuous and stable fluid flow and reactions were maintained in high-temperature heated channels, even when using low-boiling-point solvents. Adjustments in reaction temperature and precursor selection facilitated the large-scale synthesis of CDs emitting blue, green, yellow, and red fluorescence (B-CDs, G-CDs, Y-CDs and R-CDs). Furthermore, the excellent biocompatibility and low toxicity of the G-CDs enabled the successful application in cellular imaging. This work provides a novel solution to the challenge of insufficient fluid driving force in microfluidic synthesis of CDs, and it is expected to promote further advancements in the use of microfluidic technology for large-scale production functional nanomaterial.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Yihui Wang,Ting Yu,Huijun Yin,Shangyi Shen,Zhenqi Yang,Bohui Wang,Xingjie Wu,Honglong Chang,Haitao Zhao
Nitrogen dioxide (NO 2 ), a significant atmospheric pollutant primarily emitted from combustion processes, poses substantial environmental and health risks, underscoring the critical need for accurate detection methods. Conventional SnO 2 -based sensors are typically constrained by high operating temperatures and limited sensitivity. This study overcomes these limitations by introducing a novel approach that combines noble metal modification with bandgap-matched light excitation, enabling high-performance NO 2 detection at room temperature. Au/SnO 2 composites with hierarchical nanosheet architectures were synthesized via hydrothermal and impregnation methods, as confirmed by SEM. Their sensing properties were systematically investigated under blue light excitation. Among the samples tested, the 2.5 wt% Au/SnO 2 sensor demonstrated superior performance, exhibiting a remarkable response (149.25 @ 5 ppm), a low detection limit (150 ppb), and excellent selectivity, long-term stability, and humidity tolerance at room temperature. First-principles calculations reveal that the enhanced sensor performance originates from a synergistic effect between Au nanoparticle decoration, which enhances NO 2 adsorption and charge transfer, and the additional photogenerated carriers induced by blue light excitation. This study provides novel material design insights for developing high efficiency room temperature NO 2 sensors.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Guangyuan Chen,Zeru Wang,Chuan Tan,Yi Tan,Yawen Liu,Yikun Huang,Tao Duan,Lin Zhu
To address the competitive adsorption of NO 2 during gaseous iodine capture from spent fuel reprocessing off-gas, a hydrazine-functionalized aluminum-based metal-organic framework, CAU-10-N 2 H 3 , was constructed based on CAU-10. Considering the difference in kinetic diameter between I 2 and NO 2 , hydrazine functionalization was employed to synergistically regulate the pore size and pore electronic environment. After the introduction of -N 2 H 3 , the median pore size decreased from 0.6174 to 0.5186 nm, and the NO 2 uptake was reduced by 42.91%. Meanwhile, the introduced electron-rich -N 2 H 3 groups strengthened the interaction between the framework and iodine species, leading to adsorption capacities of 551.99 and 155.93 mg·g −1 for I 2 and CH 3 I, respectively, at 150 °C. Dynamic breakthrough experiments further showed that the I 2 adsorption capacity was only slightly affected by NO 2 , decreasing from 259.3 mg·g −1 under N 2 to 218.8 mg·g −1 under 5% NO 2 . Mechanistic analyses revealed that the introduced -N 2 H 3 groups promoted the conversion of I 2 into polyiodide species, thereby strengthening both iodine adsorption and fixation. These results demonstrate that introducing electron-rich functional groups to synergistically regulate pore size and pore environment is an effective strategy for improving the selective iodine capture performance of Al-MOFs in complex spent fuel reprocessing off-gas.
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Green Energy & Environment
·
2026
·
IF 16.7
Shiying Ni,Jiaofan Sun,Dong Zou,Zhaoxiang Zhong,Weihong Xing
Asymmetric silicon carbide (SiC) ceramic membranes exhibit significant potential for high-temperature ultrafine particle capture in industrial applications, which showed great prospects in energy and environmental areas. However, the high permeance and high strength of the ceramic membranes are often difficult to obtain simultaneously. The traditional asymmetric ceramic membranes composed of particle stacking have better mechanical strength, while their high mass transfer resistance leads to lower gas permeance. Increasing the overall porosity of ceramic membranes can effectively reduce the mass transfer resistance, but their relatively lower strength is not conducive to industrial applications. Herein, we propose a phase inversion strategy to create a defect-free and high-porosity membrane layer on a rigid macroporos support. This innovative structural design enhances the gas permeance and mechanical strength of the ceramic membrane simultaneously. The resulting ceramic membranes exhibited excellent gas permeance between 385.2 to 447.3 m 3 ·m −2 ·h −1 ·kPa −1 with average pore size ranging from 3.26 to 3.89 μm and a bending strength exceeding 20 MPa. Notably, the Darcy permeability coefficient of the ceramic membrane prepared in this work was more than twice that of the widely recognized commercial Pall Schumalith filter (with a pore size of 5 μm) from the authoritative Pall Corporation. The computerized tomography (CT) results indicated that the membrane layer possessed high connective internal channels. Furthermore, computational fluid dynamics (CFD) simulation was employed to verify the substantial superiority of the high porous finger-like pores in reducing the mass transfer resistance. Additionally, the SiC membranes presented a superior removal efficiency of over 99.93% and an excellent regeneration performance when capturing nano-sized particles with ultrafine particles at high temperatures, demonstrating satisfactory potential in ultrafine particle capture at extreme environments.
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SENSORS
·
2026
·Vol. 26
·期 11
·3450
·
IF 4
Baohui Zhang,Haoyu Zhou,Xiaowu Zhu,Haoxiang Chen,Yang Yang
High-performance ethanol sensors with low power consumption show critical applications in environmental monitoring, personal health diagnosis, industry and traffic safety. Herein, MoO3/Nb2C MXene heterojunction gas-sensing materials were constructed via a one-step hydrothermal method for MoO3nanotube synthesis. The dominant facets of MoO3were shifted from the (040) orientation in MoO3nanotubes to the (110) and (021) orientations in the MoO3/Nb2C MXene composite. Nb2C nanosheets provide a large number of crystallization sites, preventing the growth of MoO3nanotubes during synthesis, inducing a strategic facet release. The sensing performance shows MoO3/Nb2C MXene composite reduces the operating temperature down to 120 °C. The 15 wt% Nb2C MXene-precursor-mixed MoO3sensor exhibits an enhanced response of 6.1 toward 100 ppm ethanol, which is higher than that of pristine MoO3nanotubes at 120 °C, with response and recovery times of 19 s and 72 s, respectively. The sensors show high selectivity toward ethanol over other VOC gases and good long-term stability over 30 days. This work confirms that crystal engineering is an effective method for reducing operating temperature and enhancing gas-sensing performance, and the sensor shows potential application for ethanol sensing.
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Energetic Materials Frontiers
·
2026
·
IF 4.7
Ting Sheng,Yang Zhao,Xing Lan,Yu-ge Xiang,Tao Huang,Bo Jin,Ru-fang Peng
In this work, the application of poly( p -phenylenediamine) (PpPD) as a potential propellant stabilizer is reported for the first time, and establish a solvent-free, continuous, and efficient mechanochemical synthesis method based on spiral gas-solid two-phase flow (S-GSF). Structural and morphological characterization results show that PpPD prepared by this method boasts advantages including high purity, high yield, mild reaction conditions, and easy scalability, with a space-time yield reaching 46.25 kg⋅m -3 ⋅h -1 . In addition, the product is characterized by smaller particle size and more uniform distribution, which enhances the compatibility of the composites. After adding 3% (mass fraction) of PpPD to nitrocellulose, the nitrogen oxides produced by the decomposition, could be effectively reduced by 37.4%, and its stabilizing effect was better than that of DPA and C2. The thermal stability TGA loss was reduced by 52.5%. Electrostatic potential analysis and aromatic nitration theory indicated that the secondary amine sites of PpPD had high electron density and exhibited an obvious scavenging effect on NO x .
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Chenyan Zhang,Chenyuan Li,Jiangfeng Luo,Rongzhe Yang,Jinheng Wang,Weihong Guo,Jikui Wang
Combined with the evaporation enthalpy reduction, excellent water transportation of hydrogel and simplified evaporator structure of self-floating ability, hydrogel foam was regarded as one of effective materials for solar water evaporation. Nevertheless, synthesis methods for preparing hydrogel foams with controllable pore structures remain to be developed, and the mechanism by which the foam structure influences evaporation performance is yet to be fully understood. Herein, Tannic acid (TA) was utilized for photothermal conversion through chelation, and TA-Fe 3 + /Tempo-CNF/PAM hydrogel foam (TFCPF) with reduced heat conductivity, excellent water adjustment and self-floating ability was synthesized for solar evaporation. Taking the advantage of the self-catalyst system of TA and Fe 3+ , a rapid and convenient synthesis method of hydrogel foam was introduced. Moreover, throughout the syringe-pulling method, the gas phase volume fraction of hydrogel could be controlled precisely. Influenced by the volume fraction, the foam structure and floating condition on evaporation performance was discussed. The fast fabrication and controllable foaming method of TFCPF provided a novel and brief method for the fabrication of hydrogel foam that could be used for solar water evaporation without any additional water transportation or heat insulation structure. With closed-cell structure and high gas phase volume fraction, TFCPF-3 achieved the evaporation rate of 1.85 kg·m −2 ·h −1 and efficiency of 82.61% with reduced heat conductivity and evaporation enthalpy, while the hydrophilic double-network structure provided excellent mechanical robustness and salt resistance, enabling stable seawater desalination.
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RSC Advances
·
2017
·Vol. 7
·期 11
·6242-6250
·
IF 3.108
Pengchao Wang,Yongjun Hu,Huaqi Zhan,Jiaxin Chen
Glycoaldehyde (GA, HOCH2CHO) is the simplest sugar unit of the carbohydrates and the only sugar to have been detected in interstellar space to date. In the present report, the conformation of GA and its flexible hydrated complexes have been investigated in the gas phase by using mass-selected infrared (IR) spectroscopy based on vacuum-ultraviolet single photon ionization (118 nm). With the aid of theoretical calculations, the neutral GA bearing a ring-type intramolecular hydrogen bonding interaction was confirmed to be the dominant isomer in the gas phase. Moreover, the water molecules in the monohydrated complexes preferentially broke the intramolecular hydrogen bond and bridged the carbonyl oxygen and hydroxyl hydrogen of GA with two additional intermolecular H-bonds, revealing the “working rules” governing preferred binding. The theoretical results confirmed that the existence probability of the two lowest energy conformations stabilized by two intermolecular hydrogen bonds would be larger than that of the next two isomers with one intramolecular plus one intermolecular hydrogen bond. Structural investigation of hydrated GA conformers has revealed that the water molecules play the role of a bridge through intermolecular H-bonds, achieving selective population of specific GA molecular conformations. These results suggest that these hydrogen-bonded bridge structures in the hydrated complexes may provide good models for recognition in larger systems.
研究领域:
物理化学
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天体化学
·
分子光谱学
·
计算化学
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高影响因子
APPLIED ENERGY
·
2015
·
IF 5.613
Zhi-Ming Xia,Xiao-Sen Li,Zhao-Yang Chen,Gang Li,Ke-Feng Yan,Chun-Gang Xu,Qiu-Nan Lv,Jing Cai
Treatment and subsequent use of biogas are garnering huge interest for both energy recovery and mitigation of environmental impact. However, separation process is pivotal for increasing its calorific value and removing CO 2 . This work presents the kinetic and separation efficiency study as well as microcosmic structure analysis for purifying simulated biogas (45.0 mol% CO 2 /CH 4 binary mixture) through hydrate crystallization approach. Particularly, synergic additives comprise gas solvent (dimethyl sulfoxide (DMSO)) and traditional hydrate promoter (tetrahydrofuran (THF) or tetra-n-butyl ammonium bromide (TBAB)) were proposed to enhance the hydrate-based separation process. The promotion mechanism was explored through in-situ Raman spectroscopy. The residual gas phase and the decomposition gas phase from the hydrate slurry were sampled and analyzed. Based on the experimental data, the gas storage capacity, unit system gas consumed rate, gas selectivity and separation efficiency were calculated for evaluating the separation process. It was found that, the synergic additives could promote the mixture hydrate formation process due to DMSO (acid gas solvent) could improve both rate and selectivity of CO 2 during the dissolution and diffusion processes. In addition, the Raman analysis reveals that the simulated biogas forms structure II hydrate and semiclathrate framework with THF–DMSO and TBAB–DMSO respectively, and CH 4 molecules are only found in the smaller (5 12 ) cages of the mixture hydrates. It is inferred that DMSO just performs as an acid gas solvent during the gas dissolution and diffusion processes but not participate in the hydrate framework formation. It will be of practical interest in relation to resolving the bottleneck of hydrate-based biogas purification technology and of potential importance for the industry application of gas hydrate.
研究领域:
能源工程
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环境科学
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气体分离技术
·
水合物化学
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