Journal of Energy Storage
·
2024
·
IF 8.9
Mengqi Liu,Honglin Yu,Daiming Liu,Guodong Zhang,Fei Wang
In order to enhance CH 4 adsorption and absorption performance, ZIF-8@Cu was prepared by precipitation method at room temperature, while a hydrate accelerator of SO 3 − @PSNS was synthesized by the polymerization method, and CH 4 adsorption-absorption synergistic storage in ZIF-8@Cu that pre-adsorbed SO 3 − @PSNS solution was evaluated for the first time. It was found that Cu 2+ can effectively improve the adsorption kinetics of CH 4 , causing ZIF-8@Cu to reach a higher adsorption capacity, and CH 4 adsorption capacity of ZIF-8@Cu /0.14% is 12.45 % higher than that in ZIF-8. Furthermore, Cu 2+ provides additional nucleation sites for CH 4 hydrate, thereby enhancing the overall CH 4 storage density. For the water content of R w = 0.5, the doping of 0.14 % Cu 2+ causes CH 4 storage capacity via adsorption-absorption synergy increases by 33.93 %. It is worth to note that SO 3 − @PSNS significantly reduces hydration pressure while retains CH 4 adsorption ability in ZIF-8@Cu. For R w = 0.5, hydration pressure in SO 3 − @PSNS system reduces by up to 45 % compared with that in water system, while CH 4 storage capacity increases by up to 94 %. This finding makes it possible for CH 4 dense storage under low pressure via adsorption-hydration hybrid approach.
研究领域:
材料科学
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能源存储
·
化学工程
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 13.2
Lu Zheng,Saisai Ju,Xiong Li,Yongde Ma,Hongwei Zhang,Zhenping Cai,Yanning Cao,Kuan Huang,Lilong Jiang
Efficient capture of residual NH₃ from Haber-Bosch recycling gas is essential to improve process efficiency and reduce environmental impact. In this study, a series of sulfonated porous organic polymers (PTO-1S, PTT-1S, PTF-1S) were fabricated by a post-sulfonation strategy using phenolic hydroxyl-containing precursors to capture NH 3 . Comprehensive characterizations of the sulfonated derivatives demonstrated not only the successful grafting of –SO₃H groups, but more importantly, a cooperative effect with the native phenolic –OH groups. The optimized PTO-1S achieves an outstanding NH₃ capacity of 11.52 mmol/g (at 298.2 K and 1 bar), with particularly impressive performance at low pressures (5.56 mmol/g at 313.2 K and 0.03 bar), surpassing most reported adsorbents. Mechanistic studies revealed that this cooperation creates an optimal balance of strong chemisorption (–SO₃H) and reversible hydrogen bonding (–OH), which is identified as the origin of the high capacity and exceptional cycling stability (< 1% capacity loss/cycle). Besides, the sulfonated samples maintain excellent selectivity under simulated industrial conditions (NH₃/N₂/H₂ mixtures) and a rapid adsorption rate (90% saturation within 2 min), demonstrating their potential for practical NH₃ recovery applications.
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JOURNAL OF CHEMICAL SCIENCES
·
2022
·Vol. 134
·期 2
·1-11
·
IF 2.15
Yu Miao,Ji Shuai,Li Zhifang,Song Kun,Li Yueyu,Yang Jian,Yang Changlong
A simple ion-exchange method is used to prepare Mn and Co-supported TNU-9 denitration catalyst for NH 3 -SCR. The denitration activity and H 2 O/SO 2 resistance performance of the catalyst are systematically studied. The denitration activity test exhibits that the NO x removal rate of Mn-Co/TNU-9 is higher than that of Mn/TNU-9 and Co/TNU-9, the NO x removal rate is greater than 90% and the N 2 selectivity is greater than 99% in the range of 150 ~ 450 °C. It is because the redox cycle of Mn 4+ + Co 2+ ↔ Mn 3+ + Co 3+ improves the redox performance of the catalyst, which is conducive to the conduction of electrons, and then accelerates the oxidation of NO to NO 2 to produce a "fast SCR" reaction, and finally optimizes the overall SCR performance. Furthermore, the change is not significant for the catalytic activity over Mn-Co/TNU-9 in the presence of water. However, the sulfur resistance is poor at low temperatures due to the presence of ammonium bisulfate. It also has excellent catalytic stability. Therefore, supported TNU-9 catalysts will have a good development prospect in denitrification. Graphical abstract Mn-Co co-doped TNU-9 catalyst was successfully synthesized by simple ion exchange method and applied in the NH 3 -SCR. The results show that Mn-Co/TNU-9 catalyst has an excellent wide activity window in a wide temperature range of 150-450°C (NO x conversion over 90%), which is because Mn+Co 2+ ↔Mn+Co improves the redox performance and facilitates the electron transfer, which further accelerates the oxidation of NO into NO 2 that could result in the “Fast SCR” reaction. The synergistic effect between Mn and Co bimetallic can also improve activity. Moreover, Mn-Co/TNU-9 has very good catalytic stability.
研究领域:
环境科学
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催化化学
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Manli Wang,Zhicheng Liu,Ming Hou,Xu Luo,Wenbin Yang,Hongjie Zhang,Xiaoming Song,Zhigang Shao
The irreversible degradation of platinum-based catalysts caused by strong sulfur dioxide (SO₂) adsorption poses a primary obstacle to the oxygen reduction reaction (ORR), limiting the practical application of proton exchange membrane fuel cells. Herein, we design and synthesize an anti-SO 2 poisoning Pt-based catalyst comprising Pt nanoparticles anchored on a single-atom Ni-N-HCNs support. The obtained catalyst (Pt/Ni-N-HCNs) exhibits exceptional tolerance to SO₂ poisoning, demonstrating a minimal negative shift of only 47.7 mV in the half-wave potential after contamination, compared to the 79.4 mV shift observed for commercial Pt/C. More importantly, Pt/Ni-N-HCNs catalyst demonstrates significantly enhanced ORR performance, with a mass activity of 0.58 A mg Pt −1 and a specific activity of 1.57 mA cm −2 , representing 1.2-fold and 2.7-fold improvements over commercial Pt/C, respectively. Density functional theory (DFT) calculations and XPS results reveal that the strong metal-support interaction (SMSI) induces the downshift of the d-band center of Pt, thereby weakening SO 2 adsorption and facilitating SO 2 removal. Furthermore, the Ni N site in Ni-N-HCNs support exhibits high activity for SO 2 oxidation, promoting the effective removal of SO 2 from adjacent Pt sites. Both effects synergistically enhance the resistance to SO 2 poisoning of the Pt/Ni-N-HCNs catalyst without sacrificing ORR performance. This work provides insights into the design of poison-resistant electrocatalysts and the development of energy conversion systems with high environmental applicability.
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QUARTERLY JOURNAL OF SPEECH
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2022
·
IF 2.313
Zixuan Zhang,Ke Li
This study aims to analyze the affective economies that propel the viral circulations of the “Lying Flat” movement as a form of youth counternarrative in contemporary China with a special focus on the historic specificity and social imaginary revolving around the “Lying Flat” meme on Chinese social media. This study sees affect as social actions and historical constructs, exploring the sociohistorical conditions of the movement and an analysis of the bodily experience in the “Lying Flat” meme. The transduction of such experience further propels the development of the “Lying Flat” movement. We intend, through this study, to offer a detailed understanding of the uptake, circulation, and affect of the recent youth counternarratives in China. Transduction of affect across audio-visual resources in multimodality in this case suggests that objects of emotions can simultaneously take on varied forms, which propels wider circulations of affect that bind collective identities of marginalized groups of individuals.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Yaqi Cui,Zulpya Mahmut,Yangdong Xie,Fangyu Shi,Jiaqi Zhou,Yaqi Zhu,Ruilin Lou,Zhenzhou Wang,Lin Xu,Lin Wang,Biao Dong
Manipulating the “bacterial current” by targeting the electron transport chain (ETC) presents a transformative antibacterial strategy, yet achieving precise targeting and elucidating the molecular mechanism remain challenging. Here, we break through the synthetic bottleneck to engineer a robust, electron-donating nanomaterial for targeted bacterial ETC disruption. A novel in-situ sulfur-doping and vacancy-engineering strategy was employed to fabricate porous Mo(SO)₂ from MoS₂, which features abundant oxygen vacancies and expanded interlayer spacing. These vacancies serve as electron-deficient centers that facilitate a rapid and strong electron donation. By functionalizing with 4-mercaptophenylboronic acid (4-MPBA) for targeting, the electrons are specifically transferred to the bacterial ETC. We systematically unveil the molecular mechanism: the donated electrons suppress the expression of ubiC , a key chorismate lyase for ubiquinone synthesis, via interaction with the guanidyl group of Arg63. This disruption halts proton pumping and ATP synthesis, leading to bacterial death via energy depletion.
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高影响因子
CATALYSIS SURVEYS FROM ASIA
·
2026
·
IF 2.5
Khan Khyrullah,Wang Wei,Tian Hongkai,Chang Zhidong,Dong Bin,Ghebretatios Natnael,Rasheed Kiran,Otota Benard
The aggregation of TiO 2 precursors affects the structural evolution and catalytic performance of sulfated titania, highlighting a relationship between microscale and macroscale reactivity. In the present work, the sulfated titania (TiO 2 /SO 4 2− ) solid acid catalysts were synthesized through the impregnation approach using two different precursors, pre-aggregated TiO 2 (microscale) and molecular-scale Ti(OH) 4 . The catalysts were characterized using X-ray diffraction, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller analysis, and ammonia temperature-programmed desorption (NH 3 -TPD). Their catalytic activity was tested in the transesterification reaction of ethyl acetate with n-butanol. The TiO 2 /SO 4 2− derived from Ti(OH) 4 precursor exhibited a single-phase anatase structure with (92%) higher specific surface area (63.85 m 2 g − 1 vs. 33.38 m 2 g − 1 ), smaller crystallite size (8.05 nm), and higher catalytic conversion (70%) as compared to the catalyst prepared from pre-aggregated TiO 2 . These differences are attributed to variations in precursor aggregation, which influence crystallite growth, sulfate dispersion, and surface area acidity, thereby enhancing catalytic performance during transesterification. The present work establishes a link between TiO 2 precursor aggregation and the catalytic activity of TiO 2 /SO 4 2− . The results demonstrate that the aggregation state of the TiO 2 precursor inherently governs the physicochemical characteristics and catalytic behavior of sulfated titania, providing a rational basis for tailoring solid acid catalysts for esterification and transesterification reactions.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaopeng Liu,Yaoqi Huang,Xiaomin Cheng,Youchong Hu,Shuai Luo,Yuanyuan Li,Xusheng Xia
With the increasing power density of integrated circuits challenging traditional passive heat dissipation, novel materials such as phase change hydrogel are often required. In this work, a biomimetic sweating phase change composite hydrogel is presented where a Co-N/O coordination structure is fabricated via the coordination reaction of CoSO₄·7H₂O and ethanolamine. The hydrated salt phase change material, Na₂SO₄·10H₂O, is embedded in a polyacrylamide matrix, and carbon nanotubes are introduced to construct a 3D thermal conduction pathway. During the phase change, Na₂SO₄·10H₂O absorbs heat and releases water for evaporative cooling. The Co-N/O structure, acting as a hygroscopic site, adsorbs ambient moisture when the system is inactive, promoting the hydration and regeneration of Na₂SO₄·10H₂O and enabling synergistic optimization. This composite hydrogel features a phase change enthalpy exceeding 130 J·g −1 . The addition of carbon nanotubes boosts its thermal conductivity by 107 % to 0.793 W·m −1 ·K −1 . The Co-N/O structure significantly enhances its moisture absorption/desorption capabilities, with a moisture absorption rate of 4.71 g·g −1 at 95 % relative humidity and a maximum water absorption rate of 2.7 g·g −1 ·h −1 . At 30 % relative humidity, over 80 % of water is released within 50 min at 60 °C. In operation, it reduces the heating plate temperature by 8.6 °C and maintains a low temperature for 140 min, offering an efficient and eco - friendly solution for high - density electronic device heat dissipation.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Muyao Li,Xiangming Zhu,Linghui Yin,Shasha Feng,Zhaoxiang Zhong,Weihong Xing
The simultaneous removal of particulate matter (PM) and toxic gases (SO 2 , NO x , VOC S , etc.) remains a critical challenge in air pollution control. To address this, we developed a multifunctional zeolitic imidazolate framework-8 (ZIF-8)/polystyrene (PS) nanofiber membrane (ZIF-8/PS NFM), forming a hierarchical porous (micro-/ meso -/macroporous) structure for efficient PM capture and SO 2 adsorption. As a representative metal-organic framework, ZIF-8 offers exceptional gas adsorption capability due to its high specific surface area and uniform micropores. The incorporation of ZIF-8 nanoparticles into PS nanofibers enhanced the BET surface area (51 to 175 m 2 ·g −1 ), porosity (0.148 to 0.190 m 2 ·g −1 ), and tensile strength (0.24 to 1.45 MPa). In PM filtration tests, the optimized ZIF-8/PS NFM achieved outstanding removal efficiencies of 99.73 % (PM 0.3 ) and 99.96 % (PM 2.5 ), while maintaining low pressure drop (83 Pa and 27 Pa, respectively). Moreover, the membrane demonstrated a remarkable SO 2 adsorption capacity of 1370 mg·g −1 at 55 % relative humidity, attributed to its high surface area and abundant unsaturated Z n 2+ sites. This work provides a promising strategy for the synergistic capture of PM and SO 2 with high efficiency and stability.
研究领域:
环境科学
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材料科学
·
纳米技术
·
大气污染控制
·
功能材料
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高影响因子
ATMOSPHERIC ENVIRONMENT
·
2025
·
IF 3.7
Ya Zhao,Chong Wang,Yingqi Zhao,Yufeng Shao,Hua Xie,Jiayue Yang,Weiqing Zhang,Guorong Wu,Gang Li,Ling Jiang,Xueming Yang
Elucidating the effects of anthropogenic pollutants on the formation mechanism of secondary organic aerosol (SOA) is crucial for the improvement of atmospheric models toward the development of effective control strategies. It is extremely challenging to precisely clarify the impacts of concentrations of anthropogenic pollutants on the molecular compositions and particle number/mass concentrations of SOA under complicated conditions. Here, we report a series of the studies on the effects of anthropogenic pollutants (NO 2 and SO 2 ) on the photooxidation of a representative monoterpene , Δ 3 -carene, by using the scanning mobility particle sizer spectrometer, recently-developed vacuum ultraviolet free electron laser (VUV-FEL) photoionization aerosol mass spectrometry , and quantum chemical calculations . The results indicated that with the increase of NO 2 concentration, the SOA yields increased under low-NO 2 conditions but decreased under high-NO 2 conditions. The OH radical was found to be the primary oxidant under low-NO 2 conditions, whereas O 3 became the dominant oxidant under high-NO 2 conditions. SO 2 substantially enhanced the formation of highly oxidized molecules via the acid-catalyzed pathway. A series of new compounds (i.e., organic peroxides , organic nitrates, and organosulfates) were observed and their formation mechanisms were proposed. The present findings highlight the critical role of anthropogenic pollutants in the photooxidation of monoterpene under low and high pollution environments and also open new avenues toward systematic studies of a broader class of volatile organic compounds .
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Zhang Yu,Li Zhibin,Che Zhen,Zhang Wang,Zhang Yusen,Lin Ziqi,Lv Zhan,Wu Chunling,Han Longwei,Tang Jieyuan,Zhu Wenguo,Xiao Yi,Zheng Huadan,Zhong Yongchun,Chen Zhe,Yu Jianhui
Lateral momentum conservation is typically kept in a non-absorptive rotationally symmetric system through mirror symmetry via Noether’s theorem when illuminated by a homogeneous light wave. Therefore, it is still very challenging to break the mirror symmetry and generate a lateral optical force (LOF) in the rotationally symmetric system. Here, we report a general dynamic action in the SO (2) rotationally symmetric system, originating from the polarization-tuned mirror symmetry breaking (MSB) of the light scattering. We demonstrate theoretically and experimentally that MSB can be generally applied to the SO (2) rotationally symmetric system and tuned sinusoidally by polarization orientation, leading to a highly tunable and highly efficient LOF (9.22 pN/mW/μm −2 ) perpendicular to the propagation direction. The proposed MSB mechanism and LOF not only complete the sets of MSB of light-matter interaction and non-conservative force only using a plane wave but also provide extra polarization manipulation freedom.
研究领域:
光学
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光子学
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对称性破缺
·
光与物质相互作用
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Zhechao Hua,Wenlei Qin,Chunyan Chen,Junfang Li,Zijun Dong,Jingyun Fang
Nitrate (NO 3 − ) photolysis in water generates hydroxyl radicals (HO • ) and reactive nitrogen species (RNS), driving a complex transformation of organic pollutants. This study investigates the degradation pathways of phenol during NO 3 − photolysis in the presence of bicarbonate (HCO 3 − ), which is inevitably present in practical waters that scavenges HO • to form carbonate radical (CO 3 •− ). As the HCO 3 − concentration increased from 0 to 10 mM, the concentrations of both HO • and • NO decreased during NO 3 − photolysis. But in contrast, the pseudo-first-order rate constant ( k ′) of phenol increased by 66.7%, which was attributed to a 4.8-fold increase in the relative contribution of RNS and CO 3 •− to the overall degradation rate. Laser flash photolysis confirmed that CO 3 •− reacted with phenol via electron transfer, which increased the yield of phenoxyl radicals. The elevated concentrations of phenoxyl radicals subsequently promoted the formation of nitro(so)phenols during NO 3 − photolysis with HCO 3 − , via the rapid combination of phenoxyl radicals with • NO and • NO 2 . Specifically, the conversion yield of phenol to nitrophenols significantly increased from 2.2% to 16.7% at 60 min as HCO 3 − increased from 0 to 10 mM. Furthermore, the formation of nitrated polymers was also enhanced during NO 3 − photolysis in the presence of HCO 3 − , due to the increase of CO 3 •− and • NO 2 . This study elucidates the critical role of HCO 3 − in transformation kinetics and pathways of organic compounds during NO 3 − photolysis in water treatment.
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PubMed
高影响因子
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