Catalysis Letters最新文献_第8页

Heat-Assisted Visible Light Catalytic PMS for Diclofenac Degradation: Mn-Doped g-C3N4 Catalysts and Synergistic Catalytic Mechanism 热辅助可见光催化 PMS 降解双氯芬酸：掺锰 g-C3N4 催化剂和协同催化机理

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-09-13 DOI: 10.1007/s10562-024-04817-5

Qinglu Yuan, Peize Wang, Mengjie Fan, Yuan Xu, Yingwen Chen

{"title":"Heat-Assisted Visible Light Catalytic PMS for Diclofenac Degradation: Mn-Doped g-C3N4 Catalysts and Synergistic Catalytic Mechanism","authors":"Qinglu Yuan, Peize Wang, Mengjie Fan, Yuan Xu, Yingwen Chen","doi":"10.1007/s10562-024-04817-5","DOIUrl":"10.1007/s10562-024-04817-5","url":null,"abstract":"<div><p>Different manganese salt precursor-doped g-C<sub>3</sub>N<sub>4</sub> catalysts prepared by the mixed calcination method were applied in the heat-assisted visible light catalytic peroxymonosulfate (PMS) activation (Heat/Vis/PMS) system for the degradation of diclofenac (DCF). Under this Heat/Vis/PMS system, the CN-Mn-S catalyst using MnSO<sub>4</sub> as the manganese salt precursor showed the optimal DCF degradation efficiency (96.9%) with the fastest reaction rate (0.1607 min<sup>−1</sup>). Besides, with the advantages of large specific surface area, high Mn<sub>3</sub>O<sub>4</sub> generation, and good visible light absorption performance, CN-Mn-S catalyst also maintained excellent catalytic activity after five cycles. Electron paramagnetic resonance (EPR) analysis revealed that the generation of active species with relatively high contribution to DCF degradation, including generation of superoxide anion (O<sub>2</sub>·<sup>−</sup>) and singlet oxygen (<sup>1</sup>O<sub>2</sub>), were significantly increased in the CN-Mn-S/Heat/Vis/PMS system. Meanwhile, combined with the analysis of influence factor experiments and the DCF degradation characteristics, the CN-Mn-S/Heat/Vis/PMS system was able to maintain excellent DCF degradation ability in complex environments. This work provides a new idea for the application of PMS in real environment.</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":"154 12","pages":"6254 - 6270"},"PeriodicalIF":2.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254155","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

Fabrication Condition-Dependent Photocatalytic Ciprofloxacin (CIP) Antibiotic Degradation of NaTiOx-Derived Brookite TiO2 Nanorods 制备条件依赖性光催化环丙沙星 (CIP) 抗生素降解的 NaTiOx 衍生 Brookite TiO2 纳米棒

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-09-13 DOI: 10.1007/s10562-024-04813-9

Jingru Hu, Minjun Jiang, Bingwen Hu, Gang Cheng

{"title":"Fabrication Condition-Dependent Photocatalytic Ciprofloxacin (CIP) Antibiotic Degradation of NaTiOx-Derived Brookite TiO2 Nanorods","authors":"Jingru Hu, Minjun Jiang, Bingwen Hu, Gang Cheng","doi":"10.1007/s10562-024-04813-9","DOIUrl":"10.1007/s10562-024-04813-9","url":null,"abstract":"<div><p>Remediation of antibiotics by photocatalysis technique has been regarded as a promising route to tackle with the environmental pollution affecting human survival and development. In this work, brookite TiO<sub>2</sub> nanorods with different oxygen vacancy have been synthesized through tailoring the volume of ethylene glycol by hydrothermally treatment with NaTiOx-nanoassembly. After constitute and morphology confirmation with different characterizations, their photocatalytic performances are evaluated via ciprofloxacin (CIP) antibiotic degradation experiments. The result shows that the TiO<sub>2</sub>-0 has the highest photocatalytic efficiency towards CIP degradation, comparing with TiO<sub>2</sub>-15 and TiO<sub>2</sub>-30 samples. Although the TiO<sub>2</sub>-30 has high concentration oxygen vacancy, it exhibits excellent adsorption ability in the dark, rather than CIP degradation rate. The photo/electrochemical tests suggest the photo-generated electron lifetime, charge transfer ability, and the effective active sites on the material’s surface are inversely proportional to the concentration of oxygen vacancies. It also concludes that rational fabrication conditions tailoring of the photocatalyst could optimize the corresponding capability in the antibiotic degradation process. In addition, the possible degradation pathway is also proposed based on the high resolution mass spectrometry (HRMS), and the acute toxicity changes in the degradation process are also predicted.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 12","pages":"6290 - 6299"},"PeriodicalIF":2.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175705","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

Catalytic Cracking of Waste Cooking Oil to Alkane-Based Hydrocarbon Over Activated Carbon Supported La and Ce Oxides 以 La 和 Ce 氧化物为支撑的活性炭催化裂解废食用油生成烷基碳氢化合物

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-09-12 DOI: 10.1007/s10562-024-04807-7

Samah Zaki Naji, Ching Thian Tye, Abdul Rahman Mohamed

{"title":"Catalytic Cracking of Waste Cooking Oil to Alkane-Based Hydrocarbon Over Activated Carbon Supported La and Ce Oxides","authors":"Samah Zaki Naji, Ching Thian Tye, Abdul Rahman Mohamed","doi":"10.1007/s10562-024-04807-7","DOIUrl":"10.1007/s10562-024-04807-7","url":null,"abstract":"<div><p>The increasing global demand for fuel, along with pressing environmental regulations and concerns, and the need for energy security, all point to the biofuel industry seeing rapid growth in the near future. The objective of this study was to study the performance of a series of activated carbon (AC) supported La and Ce oxide catalysts in the catalytic cracking of waste cooking oil into alkane-based hydrocarbon. Coconut-shell activated carbon was loaded with various amounts of lanthanum and cerium were prepared via wet impregnation. The catalytic cracking activity was evaluated in a fixed bed reactor under N<sub>2</sub> flow at 450 °C and a weight hourly space velocity of 8 h<sup>−1</sup> at 60 min. The physical and chemical properties of the prepared catalysts were characterized by BET, SEM–EDX, XRD, TPD-NH<sub>3</sub>/CO<sub>2</sub>, FTIR, and TGA. The results indicated that 5 wt% La/AC performed superiorly with a liquid product of 87.03% which composed of 99.09% hydrocarbons, that were mostly alkane (79.89%) with n-(C<sub>15</sub> + C<sub>17</sub>) 66% selectivity (66.13%).</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 12","pages":"6494 - 6511"},"PeriodicalIF":2.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175696","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

Confinement of Ultrasmall Pd Clusters Within Nanosized ZIF-8-Derived Cu-N-C Materials for Efficient and Stable Synthesis of Glycerol Carbonate from Glycerol 在纳米级 ZIF-8 衍生的 Cu-N-C 材料中封闭超小型钯团簇，从甘油中高效稳定地合成碳酸甘油酯

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-09-12 DOI: 10.1007/s10562-024-04799-4

Jiawen Zhang, Zhihao Lv, Pingbo Zhang, Mingming Fan, Pingping Jiang, Yan Leng

{"title":"Confinement of Ultrasmall Pd Clusters Within Nanosized ZIF-8-Derived Cu-N-C Materials for Efficient and Stable Synthesis of Glycerol Carbonate from Glycerol","authors":"Jiawen Zhang, Zhihao Lv, Pingbo Zhang, Mingming Fan, Pingping Jiang, Yan Leng","doi":"10.1007/s10562-024-04799-4","DOIUrl":"10.1007/s10562-024-04799-4","url":null,"abstract":"<div><p>Copper-Nitrogen-Carbon (Cu-N-C) materials, derived from zeolite imidazolium frameworks, serve as promising carriers for catalyzing glycerol carbonylation reactions due to their modifiable pore size structure, enhanced catalytic selectivity, and stability. However, conventional palladium loading often results in the susceptibility of Cu-Pd co-catalysis loss, impeding practical application. In this investigation, we employed an in-situ confinement technique to embed polyvinylpyrrolidone (PVP)-modified palladium nanoparticles within the Cu-ZIF-8 metal framework, followed by direct calcination under a nitrogen atmosphere. This method yielded uniform-sized and shaped copper-palladium alloy catalysts, denoted as Pd@Cu-NC. Comparative analysis with catalysts prepared via impregnation followed by calcination revealed significantly enhanced stability of the resulting Pd@Cu-NC catalysts, with improved selectivity and stability of the active components. Notably, catalyst stability was markedly improved, and active component loss was mitigated. Under optimized conditions, a remarkable yield of 90.14% and selectivity of 99.91% were achieved, while retaining 77.43% activity after five cycles. Furthermore, density functional theory (DFT) calculations were employed to simulate the kinetics of carbon monoxide adsorption and glycerol dimethyl acetal (DMA) solution on various substrates. The presence of copper oxide notably reduced the adsorption energy of substrates to carbon monoxide and reaction solutions, thereby lowering the reaction activation energy and enhancing the reaction rate. This computational analysis provides further evidence of the beneficial role of copper oxide in facilitating the carbonylation reaction.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 12","pages":"6389 - 6399"},"PeriodicalIF":2.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175708","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

Enhanced the Catalytic Performance of CeO2 by Tuning V5+ Doping Amount in Carbonylation of n-Butyl Amine with CO2 通过调节 V5+ 掺杂量提高 CeO2 在正丁基胺与 CO2 的羰基化反应中的催化性能

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-09-12 DOI: 10.1007/s10562-024-04806-8

Dalei Sun, Kang Cheng, Chen Zhou, Xiangye Liu, Zhiwu Liang

{"title":"Enhanced the Catalytic Performance of CeO2 by Tuning V5+ Doping Amount in Carbonylation of n-Butyl Amine with CO2","authors":"Dalei Sun, Kang Cheng, Chen Zhou, Xiangye Liu, Zhiwu Liang","doi":"10.1007/s10562-024-04806-8","DOIUrl":"10.1007/s10562-024-04806-8","url":null,"abstract":"<div><p>CO<sub>2</sub> regeneration and reutilization is considered to be a green and effective route with highly potential for development. CeO<sub>2</sub> showed high catalytic activity for the production of N,N′-dibutylurea through n-butyl amine and CO<sub>2</sub>. Herein, V-doped CeO<sub>2</sub> with different molar ratios of V/Ce (V<sub>x%</sub><i>-</i>CeO<sub>2</sub>, x = 0, 0.4, 0.6, 0.8 and 1.0) were further successfully synthesized and firstly applied to the reaction of CO<sub>2</sub> with n-butyl amine. The reaction results displayed the catalytic performance of CeO<sub>2</sub> were prominently enhanced by doping V<sup>5+</sup> and followed an order of V<sub>0.8%</sub>-CeO<sub>2</sub> > V<sub>0.6%</sub>-CeO<sub>2</sub> > V<sub>1.0%</sub>-CeO<sub>2</sub> > V<sub>0.4%</sub>-CeO<sub>2</sub> > CeO<sub>2</sub>. The reason for the changes in the catalytic activities of CeO<sub>2</sub> with different doping amounts of V<sup>5+</sup> could be closely related to the surface oxygen vacancy and surface weak acidity and weak basicity based on specific analysis of relevant characterization including XRD, BET, Raman, XPS, EPR and NH<sub>3</sub>/CO<sub>2</sub>-TPD.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 12","pages":"6425 - 6434"},"PeriodicalIF":2.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175694","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

Metal Organic Framework–Derived Co and Co-Nx Embedded Mesoporous Carbon Sheets as an Efficient Electrocatalyst Toward the Oxygen Reduction Reaction for Air-Breath Cathode Microbial Fuel Cells 金属有机框架衍生的 Co 和 Co-Nx 嵌入介孔碳薄片作为一种高效电催化剂促进空气呼吸阴极微生物燃料电池的氧气还原反应

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-09-11 DOI: 10.1007/s10562-024-04809-5

Long Tang, Xingyun Liu, Zeyong Zhu, Junjie Luo, Song Zhao, Wenyi Wang

{"title":"Metal Organic Framework–Derived Co and Co-Nx Embedded Mesoporous Carbon Sheets as an Efficient Electrocatalyst Toward the Oxygen Reduction Reaction for Air-Breath Cathode Microbial Fuel Cells","authors":"Long Tang, Xingyun Liu, Zeyong Zhu, Junjie Luo, Song Zhao, Wenyi Wang","doi":"10.1007/s10562-024-04809-5","DOIUrl":"10.1007/s10562-024-04809-5","url":null,"abstract":"<div><p>The Co/Co-N<i>x</i>-embedded mesoporous 3D flower-like carbon sheet (Co/Co-N-MC-800) catalyst is successfully prepared from high N content H-1,2,4-Triazol-3-amine organic-ligand at different pyrolysis temperatures based on in situ pyrolysis Co-metal organic frame (MOF) (Co-PTA-MOF) precursor under nitrogen. The metal active center of the mesoporous Co/Co-N-MC-800 catalyst with more defect sites is situated in the positively charged 0 ~ + 2, and the bond spacing is consistent with the Co-N<sub>4</sub> plane structure of the co-porphyrin. The obtained Co/Co-N-MC-800 possesses an excellent oxygen reduction reaction performance with a higher onset potential (0.92 V <i>vs</i> RHE) and half-wave potential (0.76 V <i>vs</i> RHE), which is closer to Pt/C and outstanding long-term stability with 89.1% current retention after 89 h and displays an optional power density of 1079.3 ± 22.5mW·m<sup>−2</sup> in air-breath cathode microbial fuel cell (MFC). The improved catalytic performance maybe attributes to combination of the special 3D nanostructure, embedded cobalt nanoparticles (forming Co-N<sub><i>x</i></sub>) and N-doped mesoporous carbon sheet material. The present study provides the technical and theoretical basis for the ORR through the cathode modification of MOF prepared from non-precious metal and N content organic-ligand.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 12","pages":"6321 - 6332"},"PeriodicalIF":2.3,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175709","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

Enhanced Pyro-Photo Catalysis of the BaTiO3/NiB Catalyst for Dye Degradation Driven by Visible Light and Cold–Hot Cycles 在可见光和冷热循环驱动下增强 BaTiO3/NiB 催化剂的热释光催化作用以降解染料

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-09-11 DOI: 10.1007/s10562-024-04798-5

Mei Ma, Zhihua Liu, Jianguo Zhou

{"title":"Enhanced Pyro-Photo Catalysis of the BaTiO3/NiB Catalyst for Dye Degradation Driven by Visible Light and Cold–Hot Cycles","authors":"Mei Ma, Zhihua Liu, Jianguo Zhou","doi":"10.1007/s10562-024-04798-5","DOIUrl":"10.1007/s10562-024-04798-5","url":null,"abstract":"<div><p>The decomposition mechanism of dyes under the synergistic effect of pyroelectric catalysis and photocatalysis was systematically investigated using a BaTiO<sub>3</sub>/NiB catalyst in this paper, and the degradation efficiency of BaTiO<sub>3</sub>/NiB was 97.5% under light and 24 cycles of hot and cold at 25 ~ 65 °C, showing high pyroelectroic catalytic RhB decomposition activity and excellent recoverability. The degradation rate constants of RhB chromophore degradation by Pyro-photocatalytic coupled were 3.2 times as high as those of photocatalysis and 11.8 times as high as those of pyroelectric catalysis. In this study, we used light-assisted electrodeposition to deposit a thin layer of amorphous NiB acid salts onto the surface of a BaTiO<sub>3</sub> photoelectrode aiming to explore its influence on photocharge separation and the catalytic mechanism of NiB in the context of pollutant degradation. The synergies between the pyroelectric internal field and the amorphous Ni–B acid salt thin layer during photogenerated charge separation were extensively explored in this paper, including the introduction of a port for pyroelectric polarization.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 12","pages":"6241 - 6253"},"PeriodicalIF":2.3,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175711","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

Efficient Degradation of Sulfamethoxazole via Reactive Oxygen Species Produced from Activated Peroxymonosulfate by MgCoFe-LDO Catalyst MgCoFe-LDO 催化剂通过活化过硫酸盐产生的活性氧高效降解磺胺甲噁唑

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-09-11 DOI: 10.1007/s10562-024-04827-3

Kefeng Shang, Xi Feng, Yongxin Wang

{"title":"Efficient Degradation of Sulfamethoxazole via Reactive Oxygen Species Produced from Activated Peroxymonosulfate by MgCoFe-LDO Catalyst","authors":"Kefeng Shang, Xi Feng, Yongxin Wang","doi":"10.1007/s10562-024-04827-3","DOIUrl":"10.1007/s10562-024-04827-3","url":null,"abstract":"<div><p>MgCoFe layered double oxides (MgCoFe-LDO) were fabricated to activate peroxymonosulfate (PMS) for degradation of sulfamethoxazole (SMX), and the highly efficient degradation of SMX revealed an excellent catalytic activity of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO for PMS under different pH values and water matrix. Scanning electron microscope analysis indicated the catalyst has a typical “flower-like” structure, and the X-ray powder diffraction analyses proved that the main crystal phase of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO is CoFe<sub>2</sub>O<sub>4</sub> and Mg<sub>1−x</sub>Fe<sub>x</sub>O, which is responsible for the good catalytic activity of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO. The radical scavenging experiments confirmed that <sup>1</sup>O<sub>2</sub>, <span>({text{SO}}_{4}^{cdot - })</span>, OH and <span>({text{O}}_{2}^{cdot - })</span> were involved in the degradation of SMX, but <sup>1</sup>O<sub>2</sub> and <span>({text{SO}}_{4}^{cdot - })</span> played the dominant roles. According to the X-ray photoelectron spectroscopy (XPS) of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO catalyst, it was referred that the species including CoOH<sup>+</sup>, CoO<sup>+</sup>, Fe<sup>3+</sup>, FeOH<sup>2+</sup>, Fe<sup>2+</sup>, etc. involve in the activation process of PMS. Moreover, the possible degradation pathways of SMX were proposed according to the detected intermediates including N-hydroxy sulfamethoxazole, 3-amino-5-methylisoxazole from LC–MS analysis, and the toxicity analysis via Toxicity Estimation Software Tool software shows that most of the degradation products of SMX have lower toxicity than SMX.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 12","pages":"6606 - 6620"},"PeriodicalIF":2.3,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175712","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

Electron Density Optimization of Molybdenum Disulfide for Enhanced Photocatalytic Hydrogen Production Performance 优化二硫化钼的电子密度以提高光催化制氢性能

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-09-11 DOI: 10.1007/s10562-024-04816-6

Yijin Qin, Yan Li, Liang Wei, Meng Li, Hongxi Zhang, Jing Yang, Xiande Yang

{"title":"Electron Density Optimization of Molybdenum Disulfide for Enhanced Photocatalytic Hydrogen Production Performance","authors":"Yijin Qin, Yan Li, Liang Wei, Meng Li, Hongxi Zhang, Jing Yang, Xiande Yang","doi":"10.1007/s10562-024-04816-6","DOIUrl":"10.1007/s10562-024-04816-6","url":null,"abstract":"<div><p>The heterojunction construction through the effective combination of two metal sulfides can significantly improve the photocatalytic performance in the visible light region. In order to improve the photocatalytic efficiency of molybdenum disulfide (MoS<sub>2</sub>), we synthesized a series of CdS/MoS<sub>2</sub> (CM) composites using a simple hydrothermal method. Their photocatalytic activities were evaluated by the photocatalytic hydrogen production. The results showed that the photocatalytic hydrogen production rate of CM composites was significantly enhanced after visible light irradiation, which was attributed to the improvement of visible light absorption capacity, efficient separation of photogenerated carriers, strong photocurrent response, and fast charge mobility. What’s more, sample CM-3 exhibited the highest photocatalytic hydrogen production efficiency of 2809.4 μmol g<sup>−1</sup> h<sup>−1</sup> compared to pure MoS<sub>2</sub> (0 μmol g<sup>−1</sup> h<sup>−1</sup>) and CdS (81.5 μmol g<sup>−1</sup> h<sup>−1</sup>). Therefore, the successful construction of heterojunction can accumulate much more photogenerated electrons for MoS<sub>2</sub>, which is favorable to enhance its photocatalytic hydrogen production. This study provides strong evidence that heterojunction construction can obviously improve the photocatalytic activity.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>Photocatalytic H2 production of CM-3 composite. MoS2 constructed heterojunction with CdS can effectively improve the photocatalytic activity. The photocatalytic H2 production rate of CdS/MoS2 composite can reach 2809.4 μmol g-1 h-1</p></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 12","pages":"6206 - 6216"},"PeriodicalIF":2.3,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175713","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

An Effective Carbon-Supported High-Entropy-Alloy Catalyst of PtPdNiCoBi for Ethylene Glycol Electrooxidation 用于乙二醇电氧化的有效碳支撑高熵合金铂钯镍钴铋催化剂

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-09-10 DOI: 10.1007/s10562-024-04801-z

Baodui Chai, Lingling Miao, Na Zhao, Yangshuai Cheng, Han Zhang, Wei Wang

{"title":"An Effective Carbon-Supported High-Entropy-Alloy Catalyst of PtPdNiCoBi for Ethylene Glycol Electrooxidation","authors":"Baodui Chai, Lingling Miao, Na Zhao, Yangshuai Cheng, Han Zhang, Wei Wang","doi":"10.1007/s10562-024-04801-z","DOIUrl":"10.1007/s10562-024-04801-z","url":null,"abstract":"<div><p>The Pt-based catalysts are quite promising for ethylene glycol oxidation reaction (EGOR) due to their superior catalytic activity and their high cost, low reserves and poor stability of precious metals greatly limit the further large-scale application. Developing low-Pt and high-performance anode electrocatalysts is urgent to direct ethylene glycol fuel cells. At present, a high-entropy alloy (HEA) of PtPdNiCoBi/C has been developed for EGOR, and its catalytic performance has been verified by electrochemical and physical methods. Notably, the EGOR peak current density on PtPdNiCoBi/C (0.782 A mg<sup>−1</sup><sub>PtPd</sub>) reaches 3.54 times of Pt/C (0.221 A mg<sup>−1</sup><sub>Pt</sub>), and the residual current on PtPdNiCoBi/C (0.092 A mg<sup>−1</sup><sub>PtPd</sub>) is superior to that of Pt/C (0.076 A mg<sup>−1</sup><sub>Pt</sub>) after 3000 s. Moreover, the current density retention (84.0%) of it after 500 cycles, is also superior to that of the Pt/C (78.8%). This work would support the future practical use of HEA catalyst for fuel cells.</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":"154 12","pages":"6315 - 6320"},"PeriodicalIF":2.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175714","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}

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