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Assessment and trends of temporal‐spatial changes in land use and slope on soil erosion dynamics: a case study in the Qianhe Graben, China
IF 2.8 4区 环境科学与生态学
Environmental Earth Sciences Pub Date : 2025-04-04 DOI: 10.1007/s12665-025-12093-8
Zhiheng Liu, Wenjie Zhang, Chenyang Li, Tingting Wu, Jianhua Guo, Zongwei Wang, Suiping Zhou, Ling Han
{"title":"Assessment and trends of temporal‐spatial changes in land use and slope on soil erosion dynamics: a case study in the Qianhe Graben, China","authors":"Zhiheng Liu,&nbsp;Wenjie Zhang,&nbsp;Chenyang Li,&nbsp;Tingting Wu,&nbsp;Jianhua Guo,&nbsp;Zongwei Wang,&nbsp;Suiping Zhou,&nbsp;Ling Han","doi":"10.1007/s12665-025-12093-8","DOIUrl":"10.1007/s12665-025-12093-8","url":null,"abstract":"<div><p>Soil erosion is a process triggered by natural forces such as water and wind that strips away the soil layer from the Earth's surface and transports it elsewhere, posing a significant threat to agricultural production and human habitats. To quantify the temporal‐spatial response of surface soil erosion to land use/land cover (LULC) and slope changes in Qianhe Graben during 2003–2018, remote sensing and DEM data were integrated to estimate by using Revised Universal Soil Loss Equation (RUSLE) model. Our results showed that the surface soil erosion in the study area was at a slight or low level and decreased with a rate of 0.74 t ha<sup>−1</sup> year<sup>−1</sup>. The mean erosion rates of different LULC in Qianhe Graben followed by sloping cropland &gt; barelands and residential areas &gt; flat cropland &gt; grasslands &gt; woodland, which is related to the LULC transformation process. Finally, the total soil loss amounts are mainly distributed at the slope zones of 8°–15° and 15°–25°, particularly for cropland in hilly and gully areas. Overall, these results not only give evidence for the effectiveness of the “Grain‐to‐Green” Project but also give significant assistance for the implementation of soil and water conservation measures.</p></div>","PeriodicalId":542,"journal":{"name":"Environmental Earth Sciences","volume":"84 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CNTs Coordination-Embedded into Copper–Pyrazole MOFs for Selective Electrocatalytic CO2 to C2H4
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-05008-6
Zi Wan, Yunxin Dai, Jiajun Ma, Yunxia Zhao
{"title":"CNTs Coordination-Embedded into Copper–Pyrazole MOFs for Selective Electrocatalytic CO2 to C2H4","authors":"Zi Wan,&nbsp;Yunxin Dai,&nbsp;Jiajun Ma,&nbsp;Yunxia Zhao","doi":"10.1007/s10562-025-05008-6","DOIUrl":"10.1007/s10562-025-05008-6","url":null,"abstract":"<div><p>Selective electrolytic CO<sub>2</sub> to C<sub>2</sub>H<sub>4</sub> is a meaningful pathway to alleviate both energy and environmental concerns. Copper–pyrazole MOFs (CuPz) has emerged as a highly promising and ideal catalytic material for C<sub>2</sub>H<sub>4</sub> production from electrocatalytic CO<sub>2</sub> reduction. Here, short carbon nanotubes (CNTs) or functionalized CNTs were in situ embedded into CuPz to enhance its electrical conductivity and to regulate the direct coordination microenvironment of the Cu active center. Following a pre-reduction at − 1.3 V vs. reversible hydrogen electrode (RHE), a further increase in low-valent Cu was observed on the surface of CuPz, particularly in the case of CuPz@FCNT-A, with Cu<sup>+</sup> accounting for over 50%. This resulted in the highest C<sub>2</sub>H<sub>4</sub> selectivity (55.3% FE<sub>C2H4</sub>) at − 1.1 V vs. RHE and excellent stability. The embedding of short CNTs or functionalized CNTs exposed more active sites, and, at the same time, enhanced the catalysts’ electron transfer ability. Notably, functionalized CNTs exhibited a more pronounced positive impact than pristine CNTs. The reaction mechanism responsible for C<sub>2</sub>H<sub>4</sub> production was elucidated through in situ attenuated total reflection-fourier transform infrared spectroscopy (ATR-FTIR) analysis, which revealed that *CO dimerization was the primary pathway and *CO–*COH coupling was the secondary one.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Targeting UAF1 Alleviate Neurotoxicity by Inhibiting APP/NLRP3 Axis-Mediated Pyroptosis and Apoptosis
IF 3.7 3区 医学
Neurochemical Research Pub Date : 2025-04-04 DOI: 10.1007/s11064-025-04379-x
Ling Cheng, Xianguang Meng, Dandan Tian, Bin Zheng, Yinfan Xiao, Xueying Zhao, Yingying Xu, Hui Yang, Jianzhong Bi, Fan Li, Zhaohong Xie
{"title":"Targeting UAF1 Alleviate Neurotoxicity by Inhibiting APP/NLRP3 Axis-Mediated Pyroptosis and Apoptosis","authors":"Ling Cheng,&nbsp;Xianguang Meng,&nbsp;Dandan Tian,&nbsp;Bin Zheng,&nbsp;Yinfan Xiao,&nbsp;Xueying Zhao,&nbsp;Yingying Xu,&nbsp;Hui Yang,&nbsp;Jianzhong Bi,&nbsp;Fan Li,&nbsp;Zhaohong Xie","doi":"10.1007/s11064-025-04379-x","DOIUrl":"10.1007/s11064-025-04379-x","url":null,"abstract":"<div><p>The accumulation of amyloid β (Aβ) protein, derived from the amyloid precursor protein (APP), plays a pivotal role in the pathogenesis of Alzheimer’s disease (AD) by inducing neuronal cell injury. This study investigated the specific functions of ubiquitin-specific protease 1-associated factor 1 (UAF1) in mediating the neurotoxic effects triggered on Aβ. To model AD-related neuronal injury in vitro and in vitro, SH-SY5Y cells exposed to Aβ<sub>25-35</sub> and APPswe/PS1dE9 (APP/PS1) transgenic mice were utilized. Compared with control mice, UAF1 levels were significantly elevated in the hippocampus of experimental mice. In vitro experiments showed that UAF1 knockdown reduced Aβ-induced apoptosis and enhanced cell viability. Furthermore, UAF1 knockdown markedly suppressed Aβ<sub>25-35</sub> -induced pyroptosis in SH-SY5Y cells and reduced the production of IL-1β and IL-18 through the nucleotide-binding domain and leucine-rich repeat containing family pyrin domain-containing 3 (NLRP3)/Gasdermin D pathway. Mechanistic analyses revealed that UAF1 directly binds to NLRP3 to mediate its effects. In vivo, UAF1 knockdown mitigated cognitive deficits, decreased APP expression, Aβ plaque deposition, and reduced hyperphosphorylated Tau levels. These findings underscore the critical role of UAF1 in regulating neuronal apoptosis and pyroptosis, thereby highlighting its potential as a promising therapeutic target for AD.</p></div>","PeriodicalId":719,"journal":{"name":"Neurochemical Research","volume":"50 2","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11064-025-04379-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction to: Sustainable Atrazine Removal from Real Water Matrices Using Solar‑Powered Electrooxidation
IF 3.8 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2025-04-04 DOI: 10.1007/s11270-025-07890-7
Bishwatma Biswas, Sudha Goel
{"title":"Correction to: Sustainable Atrazine Removal from Real Water Matrices Using Solar‑Powered Electrooxidation","authors":"Bishwatma Biswas,&nbsp;Sudha Goel","doi":"10.1007/s11270-025-07890-7","DOIUrl":"10.1007/s11270-025-07890-7","url":null,"abstract":"","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Algebraic Geometry of the Multilayer Model of the Fractional Quantum Hall Effect on a Torus
IF 2.2 1区 物理与天体物理
Communications in Mathematical Physics Pub Date : 2025-04-04 DOI: 10.1007/s00220-025-05267-9
Igor Burban, Semyon Klevtsov
{"title":"Algebraic Geometry of the Multilayer Model of the Fractional Quantum Hall Effect on a Torus","authors":"Igor Burban,&nbsp;Semyon Klevtsov","doi":"10.1007/s00220-025-05267-9","DOIUrl":"10.1007/s00220-025-05267-9","url":null,"abstract":"<div><p>In 1993 Keski-Vakkuri and Wen introduced a model for the fractional quantum Hall effect based on multilayer two-dimensional electron systems satisfying quasi-periodic boundary conditions. Such a model is essentially specified by a choice of a complex torus <i>E</i> and a symmetric positively definite matrix <i>K</i> of size <i>g</i> with non-negative integral coefficients, satisfying some further constraints. The space of the corresponding wave functions turns out to be <span>(delta )</span>-dimensional, where <span>(delta )</span> is the determinant of <i>K</i>. We construct a hermitian holomorphic bundle of rank <span>(delta )</span> on the abelian variety <i>A</i> (which is the <i>g</i>-fold product of the torus <i>E</i> with itself), whose fibres can be identified with the space of wave function of Keski-Vakkuri and Wen. A rigorous construction of this “magnetic bundle” involves the technique of Fourier–Mukai transforms on abelian varieties. The constructed bundle turns out to be simple and semi-homogeneous and it can be equipped with two different (and natural) hermitian metrics: the one coming from the center-of-mass dynamics and the one coming from the Hilbert space of the underlying many-body system. We prove that the canonical Bott–Chern connection of the first hermitian metric is always projectively flat and give sufficient conditions for this property for the second hermitian metric.</p></div>","PeriodicalId":522,"journal":{"name":"Communications in Mathematical Physics","volume":"406 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00220-025-05267-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of the relationship between soil particle fractal dimension and physicochemical properties
IF 2.8 4区 环境科学与生态学
Environmental Earth Sciences Pub Date : 2025-04-04 DOI: 10.1007/s12665-025-12214-3
Yongxing Pan, Meng Chen, Yudao Chen
{"title":"Analysis of the relationship between soil particle fractal dimension and physicochemical properties","authors":"Yongxing Pan,&nbsp;Meng Chen,&nbsp;Yudao Chen","doi":"10.1007/s12665-025-12214-3","DOIUrl":"10.1007/s12665-025-12214-3","url":null,"abstract":"<div><p>By examining the multifractal characteristics of soil particle size distribution (PSD), we can elucidate the distribution patterns of soil particles and identify their primary influencing factors. In this study, soil samples from different areas of a floodplain were analyzed for PSD, physicochemical properties, and heavy metal content. Multifractal parameters were calculated using multifractal theory. Subsequently, the relationships between soil PSD, fractal dimension, and soil physicochemical properties were investigated using correlation analysis, Mantel test, and random forest models. The results indicated that the soil particle size distribution in the study area was dominated by silt (2–20 μm) and sand (20–2000 μm) particles, with average contents ranging from 21.18% to 59.46% and 33.24% to 63.81%, respectively. The mean values of the single fractal dimension (<i>D</i>), which represents overall soil structure complexity rather than an average of <i>D</i>(0), <i>D</i>(1), and <i>D</i>(2), ranged from 2.27 to 2.54, indicating coarser soil particles. The multifractal dimensions revealed that the capacity dimension (<i>D</i>(0)) was greater than the information dimension (<i>D</i>(1)) and the correlation dimension (<i>D</i>(2)), i.e., <i>D</i>(0) &gt; <i>D</i>(1) &gt; <i>D</i>(2), confirming the multifractal nature of soil particle size distribution. The mean values of spectral width (Δ<i>α</i>) ranged from 1.28 to 3.68, indicating a relatively complex soil fractal structure and significant variability in soil PSD inhomogeneity. Significant correlations (<i>P</i> &lt; 0.05, |<i>r</i>| ≥ 0.35) were found between Zn and <i>D</i>, Δ<i>α</i>, <i>D</i>(1), <i>D</i>(2), and <i>D</i>(1)/<i>D</i>(0), as well as between Pb and <i>D</i>(2) and <i>D</i>(1)/<i>D</i>(0), suggesting a relationship between heavy metals and fractal dimensions. Additionally, there was a significant correlation (<i>P</i> &lt; 0.05, |<i>r</i>|≥ 0.35) between soil PSD and fractal dimensions. Mantel Test and RF analyses, with soil PSD and physicochemical properties as independent variables and soil fractal dimensions as the dependent variable, demonstrated the significant influence of soil PSD on soil fractal dimensions. Fractal dimensions reflect soil quality characteristics and weathering intensity, with multifractal dimensions offering more descriptive insights, as demonstrated by their significant correlations with key soil properties such as cation exchange capacity (CEC), amorphous aluminum oxide (Al<sub>o</sub>), free iron oxide (Fe<sub>d</sub>), and free aluminum oxide (Al<sub>d</sub>). These findings highlight the critical role of soil fractal dimensions in representing soil particle composition and its spatial variability. By elucidating these relationships, this study enhances the understanding of soil structural variability, which is critical for informing targeted ecological management and restoration strategies in alluvial fan environments.</p></div>","PeriodicalId":542,"journal":{"name":"Environmental Earth Sciences","volume":"84 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanomaterials functionalized signal-ON/OFF electrogenerated chemiluminescence biosensor for quantization of trypsin based on target-induced cleavage of peptide
IF 5.3 2区 化学
Microchimica Acta Pub Date : 2025-04-04 DOI: 10.1007/s00604-025-07131-y
Shuo Kang, Ronghan Qu, Yuhong Duan, Jiale Yang, Fen Ma
{"title":"Nanomaterials functionalized signal-ON/OFF electrogenerated chemiluminescence biosensor for quantization of trypsin based on target-induced cleavage of peptide","authors":"Shuo Kang,&nbsp;Ronghan Qu,&nbsp;Yuhong Duan,&nbsp;Jiale Yang,&nbsp;Fen Ma","doi":"10.1007/s00604-025-07131-y","DOIUrl":"10.1007/s00604-025-07131-y","url":null,"abstract":"<div><p>Trypsin (TPN) is an important proteolytic enzyme in the digestive system and its abnormal levels are indicative of some pancreatic diseases. As an endopeptidase, TPN can cleave substrate peptide mainly by catalyzing the hydrolysis of the carboxyl side peptide bond of lysine (K) or arginine (R) residues. Based on this hydrolysis cleavage effect, two kinds of nanomaterials functionalized electrogenerated chemiluminescence (ECL) biosensors for the determination of TPN were designed as follows: A signal-ON ECL biosensor was fabricated by attaching substrate peptide (HWR*GWVC, “*” representing the cleavage site, abbreviated as HGC) labeled with ferrocene carboxylic acid (as quencher) onto the surface of NH<sub>2</sub>-MIL-53(Al) film which was incorporated with ECL emitting species (bis (2,2′-bipyridine)-4′-methyl-4-carboxybipyridine-ruthenium (N-succinimidylester)-bis (hexafluorophosphate) (Ru complex)). The presence of tryptic cleavage event can eventually lead the Fc complex to leave the electrode and results in the increase of the ECL intensity. HGC labeled with Ru-Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub>-AuNP complex was used as capture probe and signal probe, which was attached onto NH<sub>2</sub>-MIL-53(Al) film modified glassy carbon electrode. A signal-OFF ECL biosensor was built as described above. The presence of TPN lead the Ru-Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub>-AuNPs to leave the electrode, which resulted in the decreasing ECL intensity. As expected, the fabricated ECL biosensing methods provide excellent sensitivity and selectivity toward the TPN activity. Thus, this strategy shows great potential application in the clinic for diagnosis of TPN-indicating diseases as well as the screening of TPN inhibitor-based anti-cancer drugs.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 5","pages":""},"PeriodicalIF":5.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on the Effect and Mechanism of Ru Precursors and Alkali Metal Modification on Ru/Pr6O11 Catalysts for Ammonia Decomposition
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-04992-z
Bin Guan, Junyan Chen, Zhongqi Zhuang, Lei Zhu, Zeren Ma, Xuehan Hu, Chenyu Zhu, Sikai Zhao, Kaiyou Shu, Hongtao Dang, Junjie Gao, Luyang Zhang, Tiankui Zhu, Zhen Huang
{"title":"Study on the Effect and Mechanism of Ru Precursors and Alkali Metal Modification on Ru/Pr6O11 Catalysts for Ammonia Decomposition","authors":"Bin Guan,&nbsp;Junyan Chen,&nbsp;Zhongqi Zhuang,&nbsp;Lei Zhu,&nbsp;Zeren Ma,&nbsp;Xuehan Hu,&nbsp;Chenyu Zhu,&nbsp;Sikai Zhao,&nbsp;Kaiyou Shu,&nbsp;Hongtao Dang,&nbsp;Junjie Gao,&nbsp;Luyang Zhang,&nbsp;Tiankui Zhu,&nbsp;Zhen Huang","doi":"10.1007/s10562-025-04992-z","DOIUrl":"10.1007/s10562-025-04992-z","url":null,"abstract":"<div><p>Facing with the problem of low activity at low temperatures of Ru-based ammonia decomposition catalyst, herein, the influence of Ru precursor and alkali metal modification on the hydrogen production activity of Ru/Pr<sub>6</sub>O<sub>11</sub> catalyst were studied. The Cs/Ru<sub>3</sub>(CO)<sub>12</sub>/Pr<sub>6</sub>O<sub>11</sub> catalyst exhibited the optimal activity (NH<sub>3</sub> conversion of 46.1% and H<sub>2</sub> production rate of 1.024 mmol·min<sup>−1</sup>·gcat<sup>−1</sup> at 350 °C). Characterizations showed that Ru<sub>3</sub>(CO)<sub>12</sub>/Pr<sub>6</sub>O<sub>11</sub> has the smallest Ru particle size and the most uniform size distribution, and the existence of PrO<sub>2</sub> phase in Ru(NO)(NO<sub>3</sub>)<sub>3</sub>/Pr<sub>6</sub>O<sub>11</sub> and Cl<sup>−</sup> groups in RuCl<sub>3</sub>/Pr<sub>6</sub>O<sub>11</sub> reduce the activity. Additionally, due to hydrogen spillover, SMSI and Ru re-distribution, the more alkaline alkali metal has a stronger promoting effect, which follows the law of volcanic curve. In-situ DRIFTS and DFT calculations showed that the rate determining step on Ru(0001) surface is the first dehydrogenation step of NH<sub>3</sub> with the activation barrier of 2.19 eV.</p></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of Spinel Ferrites MFe2O4 (M = Cu, Ni, Zn, and Co) Photocatalytic Properties in Selective Dehydrogenation of Formic Acid Towards Hydrogen Production
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-05007-7
Afrah Bardaoui, Hanen Abdelli, Amira Siai, Ibtissem Ben Assaker
{"title":"Evaluation of Spinel Ferrites MFe2O4 (M = Cu, Ni, Zn, and Co) Photocatalytic Properties in Selective Dehydrogenation of Formic Acid Towards Hydrogen Production","authors":"Afrah Bardaoui,&nbsp;Hanen Abdelli,&nbsp;Amira Siai,&nbsp;Ibtissem Ben Assaker","doi":"10.1007/s10562-025-05007-7","DOIUrl":"10.1007/s10562-025-05007-7","url":null,"abstract":"<div><p>Formic acid is regarded as a promising energy carrier and hydrogen storage medium for a carbon-neutral economy. This paper introduces a scalable and efficient system for the selective photocatalytic conversion of liquid formic acid into hydrogen, under visible light. Formic acid decomposition can initiate two reactions. The first, called dehydration, results in the formation of carbon monoxide and water. The second, called dehydrogenation, results in the formation of carbon dioxide and hydrogen. In the present work, spinel ferrites (MFe<sub>2</sub>O<sub>4</sub>: M = Cu, Ni, Zn, and Co) are used as photocatalysts to selectively drive the dehydrogenation reaction to produce hydrogen. These catalysts were synthesized via a starch mediated auto-combustion solgel method, yielding crystallite sizes between 47 and 112 nm. Their structural, morphological, and optical properties are determined, including the band gap values ranging from 1.6 to 2.2 eV. The photocatalytic dehydrogenation process was monitored in real time using Fourier transform infrared spectroscopy (FTIR). This analysis revealed a dehydrogenation selectivity across all spinel ferrite samples but with varied amounts of the released CO<sub>2</sub>. The highest amounts of CO₂ released after 10 h, both in the dark and under illumination, were observed for NiFe₂O₄ and ZnFe₂O₄. NiFe₂O₄ exhibits superior performance under dark conditions, while ZnFe₂O₄ demonstrates a more important activity under light irradiation. The results demonstrate that NiFe₂O₄ and ZnFe₂O₄ exhibit CO₂ production rates 3 to 4 times higher than those of CoFe₂O₄ and CuFe₂O₄ under light condition, highlighting the potential of these spinel ferrites as efficient photocatalysts for the dehydrogenation of formic acid.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Role of Acid Site Density and Pore Type on the Brønsted Acid Strength of Zeolite H-ZSM-5
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-04991-0
Stefan Adrian F. Nastase, Luigi Cavallo
{"title":"Role of Acid Site Density and Pore Type on the Brønsted Acid Strength of Zeolite H-ZSM-5","authors":"Stefan Adrian F. Nastase,&nbsp;Luigi Cavallo","doi":"10.1007/s10562-025-04991-0","DOIUrl":"10.1007/s10562-025-04991-0","url":null,"abstract":"<div><p>The Brønsted acid strength of the widely used zeolite H-ZSM-5 was investigated as a function of pore type and distance between acid sites using computational techniques. The straight channel was shown to be the most acidic, with the acid site placement of four Si T-sites apart being the most acidic based on the NH<sub>3</sub> adsorption energy. In addition, the optimal acid site configuration for adsorption was analysed using two sample molecules - ethene and butadiene - that could interact with both acid sites. The distance between acid sites was shown to be significant mostly for butadiene adsorption which was attributed to an interplay between dispersive forces and charge transfer effects. These findings are expected to contribute to a more effective zeolite design and experimental strategies.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10562-025-04991-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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