Catalysis LettersPub Date : 2024-09-21DOI: 10.1007/s10562-024-04823-7
Hong Wang, Yunfei Ma, Chongyang Zhao, JinKun Bai, Kangrong Lai
{"title":"Effects of M-Doping and Oxygen Vacancy on the Electronic and Photocatalytic Water-Splitting Properties of α-BiNbO4 (M = Mo, W)","authors":"Hong Wang, Yunfei Ma, Chongyang Zhao, JinKun Bai, Kangrong Lai","doi":"10.1007/s10562-024-04823-7","DOIUrl":"10.1007/s10562-024-04823-7","url":null,"abstract":"<div><p>Based on the first-principles density-functional theory, formation energies, transition energy levels of M (M = Mo, W) doped α-BiNbO<sub>4</sub> systems are studied. The calculation results show that the donor defects form easily under Bi-rich condition. Of these, the W<sub>int</sub> (W interstitial) and Mo<sub>int</sub> (Mo interstitial) are the two main defects that lead to n-type conductivity. Then, the electronic structures of M-mono-doped and M/O<sub>vac</sub> (O vacancy)-codoped α-BiNbO<sub>4</sub> were investigated. Our results show that the band gap of W<sub>int</sub>/O<sub>vac</sub>-codoped α-BiNbO<sub>4</sub> is reduced by 0.43 eV, and the conduction band minimum and valence band maximum are reduced by 0.20 and 0.23 eV, respectively, compared to pure α-BiNbO<sub>4</sub>, with less driving force required for the redox reaction process and then an increased redox rate. The α-BiNbO<sub>4</sub> with W<sub>int</sub>+O<sub>vac</sub> defects with n-type conductivity has good photocatalytic activity in water splitting.</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":"6217 - 6226"},"PeriodicalIF":2.3,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518498","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}
Catalysis LettersPub Date : 2024-09-21DOI: 10.1007/s10562-024-04795-8
Shulong Liu, Xuechen Huang, Jinfeng Zhang
{"title":"Synthesis of Biogenic Gd2ZnMnO6 Nanofibrous for Creation of 3-Aryl-2-oxazolidinones from Alkenes, Carbon Dioxide, and Amines","authors":"Shulong Liu, Xuechen Huang, Jinfeng Zhang","doi":"10.1007/s10562-024-04795-8","DOIUrl":"10.1007/s10562-024-04795-8","url":null,"abstract":"<div><p>In this research, microorganisms were used to produce Gd<sub>2</sub>ZnMnO<sub>6</sub> NFs in a biological process instead of a chemical method as a nanocatalyst. Considering the capability of the microorganisms to synthesize nanofibrous (NFs) upon exposure to metal ions, microorganisms were employed to produce Gd<sub>2</sub>ZnMnO<sub>6</sub> NFs through a biological process. The utilization of chemical modification to fabricate environmentally friendly heterogeneous nanocatalysts has proven to be highly appealing in the context of synthesizing 3-aryl-2-oxazolidinones using alkenes, carbon dioxide, and amines in an aqueous solution. The role of diverse variables in the creation of 3-aryl-2-oxazolidinones has been thoroughly investigated. Notably, Gd<sub>2</sub>ZnMnO<sub>6</sub> NFs demonstrates remarkable efficiency in the production of 3-aryl-2-oxazolidinones due to its unique morphology. The morphology of Gd<sub>2</sub>ZnMnO<sub>6</sub> NFs contributed to the creation of a desirable outer layer for the creation of 3-aryl-2-oxazolidinones. The findings demonstrated that the utilization of Gd<sub>2</sub>ZnMnO<sub>6</sub> nanofibers positively impacts the effectiveness of the creation of 3-aryl-2-oxazolidinones. This can be attributed to the nanofibers' impressive mechanical and ionic internal characteristics, as well as their exceptional thermal sustainability and persistent colloidal sturdiness. Consequently, employing the host–guest method, the system could be regarded as an exemplary nanocatalyst. A diverse array of olefins was successfully transformed into desirable products, independent of the electronic nature of the substitutes. The involvement of heterogeneous mixtures did not impede the progression of the reaction. Moreover, the 3-aryl-2-oxazolidinones were easily distinguished from the Gd<sub>2</sub>ZnMnO<sub>6</sub> nanofibers, and the medium exhibited the ability to undergo multiple cycles of usage without experiencing a notable decline in their catalytic activity and selectivity. This approach offers notable advantages, including a strong economic capability and the potential to withstand functional groups.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div><p>Synthesis of biogenic Gd2ZnMnO6 nanofibrous for creation of 3-Aryl-2-oxazolidinones from alkenes, carbon dioxide, and aminesSynthesis of biogenic Gd2ZnMnO6 nanofibrous for creation of 3-Aryl-2-oxazolidinones from alkenes, carbon dioxide, and amines</p></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 11","pages":"6180 - 6193"},"PeriodicalIF":2.3,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452986","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}
{"title":"The Photocatalytic Performance of JANUS SXSiN2 (X = Cr, Mo, W) Monolayers with Enhanced Carrier Migration","authors":"Wei Cai, Yuhua Chi, Mengxin Ji, Qian Zhang, Hao Ren, Houyu Zhu, Wen Zhao, Wenyue Guo","doi":"10.1007/s10562-024-04818-4","DOIUrl":"10.1007/s10562-024-04818-4","url":null,"abstract":"<div><p>Efficient catalysts for separating electron–hole pairs are crucial for improving the quantum yield and activity of photocatalysts. This study systematically investigates the properties and performance of monolayers of Janus SXSiN<sub>2</sub> (X = Cr, Mo, W) using the first-principles computational methods. The research findings suggest that biaxial strain can induce an indirect-to-direct bandgap transition in Janus SXSiN<sub>2</sub> and can also modulate the bandgap and band edge positions. Surface vacancy defects play a critical role in enhancing the charge carrier separation ability of Janus SXSiN<sub>2</sub>, leading to remarkable photocatalytic performance. Moreover, the synergistic effect of biaxial strain and vacancy defects can significantly improve the catalytic performance for the HER. This study provides a theoretical foundation for further development of efficient two-dimensional Janus photocatalysts.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>Biaxial strain can modulate the bandgap and band edge positions. Surface vacancy defects play a critical role in enhancing the charge carrier separation ability. Janus SXSiN2 exhibits excellent photocatalytic performance for the HER reaction due to the synergistic effects of strain and vacancy defects.</p></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 12","pages":"6195 - 6205"},"PeriodicalIF":2.3,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519069","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}
Catalysis LettersPub Date : 2024-09-19DOI: 10.1007/s10562-024-04800-0
Vanjari Pallavi, Reddi Kamesh, K. Yamuna Rani
{"title":"In Silico Models for Prediction of Methanol Yield in CO2 Hydrogenation Reaction Using Cu-Based Catalysts","authors":"Vanjari Pallavi, Reddi Kamesh, K. Yamuna Rani","doi":"10.1007/s10562-024-04800-0","DOIUrl":"10.1007/s10562-024-04800-0","url":null,"abstract":"<p>CO<sub>2</sub> hydrogenation to methanol is instrumental in mitigating carbon emissions and providing a renewable source of clean fuel, methanol. Though Cu-based catalysts proved to be economical and efficient catalysts for this reaction, it has the disadvantage of low catalyst efficiency and sintering. In this study, we developed different six machine learning (ML) models for the prediction of methanol yield (%) from CO<sub>2</sub> hydrogenation for Cu-based catalysts. The gradient boost random trees model outperformed other ML models with accuracy R<sup>2</sup> and RMSE of 0.96, 0.71 on train data and 0.75, 1.75 on test data. Pressure, metal:support ratio, active metal composition, GHSV and reaction temperature were found to be influential parameters for optimization of methanol yield. The prediction capability of this model is also validated based on unseen experimental data with varied input parameters and the predictions are good enough with R<sup>2</sup> and RMSE of 0.9 and 1.14. Therefore, this model can be regarded as a valuable solution to guide experimental design without actual experimentation for Cu-based catalysts.</p>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"154 12","pages":"6413 - 6424"},"PeriodicalIF":2.3,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518386","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}
{"title":"Modification of Pt/SiO2 with Mg(OH)2 Improves Xylose to Xylulose Isomerization","authors":"Wenxuan Li, Ming Chen, Yuanbo Song, Mengyu Jin, Dongsu Bi, Yalei Zhang, Zheng Shen","doi":"10.1007/s10562-024-04824-6","DOIUrl":"10.1007/s10562-024-04824-6","url":null,"abstract":"<div><p>Sugar compounds are an important part of biomass resources, and their catalytic conversion can prepare a series of platform compounds, such as lactic acid and polyols. One of the key steps is the isomerization of aldoses to ketoses. However, finding a simple method to efficiently convert aldoses to ketoses remains a great challenge. Herein, we report a core–shell structured catalyst, Pt/SiO<sub>2</sub>@Mg(OH)<sub>2</sub>, for the efficient conversion of xylose as well as the further conversion of xylose to xylulose. Xylose, a five-carbon sugar unit with the highest content in biomass, was used as the object of study to determine the optimal reaction conditions in the aqueous system by adjusting the loading amount of Mg(OH)<sub>2</sub>, catalyst addition, reaction temperature, and reaction time: In the optimum aqueous conditions, the yield of xylulose was 23.61%. We also investigated the effect of solvent effects on the hydrothermal reaction and determined the optimal solvent ratio, the yield of xylulose reached 31.74% at H<sub>2</sub>O:MeOH (8:2). We anticipate that this research result can provide a theoretical basis and reference for the industrialized production of subsequent sugar isomerization.</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":"6538 - 6550"},"PeriodicalIF":2.3,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254120","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}
Catalysis LettersPub Date : 2024-09-17DOI: 10.1007/s10562-024-04826-4
Venkata D. B. C. Dasireddy, Balaga Viswanadham, Blaz Likozar, Jignesh Valand
{"title":"CO-Free Fuel Processing of Water Gas Shift Feedstocks: Effect of Support on CuMn Spinel Performance","authors":"Venkata D. B. C. Dasireddy, Balaga Viswanadham, Blaz Likozar, Jignesh Valand","doi":"10.1007/s10562-024-04826-4","DOIUrl":"10.1007/s10562-024-04826-4","url":null,"abstract":"<div><p>Cleaning up carbon monoxide (CO) in water gas shift feedstocks is crucial for fuel cell applications. The catalytic transformation of CO in hydrogen-rich feeds poses a significant challenge in environmental catalysis. To address this issue, a range of Cu–Mn-based monometallic and bimetallic catalysts with diverse supports (such as alumina, silica, zirconia, and titania) were employed. Temperature programming techniques were utilised to observe the reduction and oxidation behaviours of these catalysts. The investigation involved testing CO oxidation at various temperatures over copper and manganese-based supported catalysts in the presence of H<sub>2</sub>O and CO<sub>2</sub> (simulating realistic conditions). A positive impact of H<sub>2</sub>O on catalytic performance was noted, whereas CO<sub>2</sub> had a suppressive effect. Furthermore, the specific support materials (Al<sub>2</sub>O<sub>3</sub>, SiO<sub>2</sub>, TiO<sub>2</sub>, and ZrO<sub>2</sub>) were studied to understand their roles in CO oxidation under realistic conditions. In the presence of water, alumina catalysts containing bimetallic metals (Cu–Mn) exhibited 100% CO conversion even at a lower temperature of 160 °C. Conversely, under the predominant influence of CO<sub>2</sub>, alumina catalyst (Cu–Mn) showed 55% CO conversion. The exceptional performance was attributed to CO preferential adsorption on highly active Cu–Mn sites and a small H<sub>2</sub>-oxidative atmosphere of the catalysts. The activity results highlighted the strong dependence of CO conversion on reaction temperatures, the presence of metals, and the types of supports. Overall, these findings suggest the potential use of these catalysts for H<sub>2</sub> purification under realistic conditions.</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":"6378 - 6388"},"PeriodicalIF":2.3,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10562-024-04826-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254122","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}
Catalysis LettersPub Date : 2024-09-16DOI: 10.1007/s10562-024-04820-w
Longwei Cheng, Pan Wang, Quanxin Ye, Hongyu Zhao, Sheikh Muhammad Farhan, Tong Yan, Hailin Zhao
{"title":"Impact of M (M = Co, Cu, Fe, Zr) Doping on CeO2-Based Catalysts for Ammonia Selective Catalytic Oxidation at Low Temperatures","authors":"Longwei Cheng, Pan Wang, Quanxin Ye, Hongyu Zhao, Sheikh Muhammad Farhan, Tong Yan, Hailin Zhao","doi":"10.1007/s10562-024-04820-w","DOIUrl":"10.1007/s10562-024-04820-w","url":null,"abstract":"<div><p>Selective catalytic conversion of ammonia to nitrogen is an effective method for reducing ammonia emissions from both stationary and mobile sources. In this study, CeO<sub>2</sub>-based catalysts (M/CeO<sub>2</sub>, M = Co, Cu, Fe, Zr) were synthesized using the sol–gel method and subsequently tested on a simulated gas experimental platform to assess their performance in NH<sub>3</sub> selective catalytic oxidation (NH<sub>3</sub>-SCO). Results showed that Co/CeO<sub>2</sub> and Cu/CeO<sub>2</sub> catalysts exhibited high ammonia oxidation activity at respectively low temperatures, with T<sub>50</sub> 196.8 and 229.5 °C, and T<sub>90</sub> 239.2 and 292.1 °C. However, it was observed that while Co/CeO<sub>2</sub> displayed poor N<sub>2</sub> selectivity, Cu/CeO<sub>2</sub> demonstrated good N<sub>2</sub> selectivity. The superior catalytic performance of Cu/CeO<sub>2</sub> and Co/CeO<sub>2</sub> catalysts compared to Fe/CeO<sub>2</sub> and Zr/CeO<sub>2</sub> can be attributed to their distinct interactions with Ce. Subsequent characterization experiments were conducted to elucidate these interactions. BET and SEM analyses revealed that all M/CeO<sub>2</sub> catalysts possessed a typical mesoporous structure. XRD and XPS results indicated that the primary phase of each catalyst was CeO<sub>2</sub>, and the incorporation of M transition metals did not alter the cubic fluorite structure. The interaction between the M metal and Ce varied, impacting the Ce<sup>3+</sup> content on the catalyst surface, which in turn influenced oxygen species adsorption and ammonia oxidation activity. H<sub>2</sub>-TPR and Raman spectroscopy analyses demonstrated that M metal incorporation shifted the CeO<sub>2</sub> reduction peak, thereby altering reduction properties and affecting oxidation performance. In particular, the Co-metal composite shifted the reduction peak to a lower temperature, thereby enhancing the reduction properties and indirectly increasing oxidation activity.</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":"6512 - 6523"},"PeriodicalIF":2.3,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254121","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}
{"title":"Construction of SnO2@CrS2 Nanocuboids Via Solvothermal Synthesis for Photoelectrochemical OER/HER Performance in Alkaline and Acidic Media and Water Detoxification Behavior","authors":"Sidra Aslam, Basharat Ali, Misbah Mirza, Raheela Naz, Waseem Abbas, Muhammad Safdar","doi":"10.1007/s10562-024-04808-6","DOIUrl":"10.1007/s10562-024-04808-6","url":null,"abstract":"<div><p>The electrolytic division of water into hydrogen (H<sub>2</sub>) and oxygen (O<sub>2</sub>) presents a sustainable solution for meeting escalating demands in renewable energy sources. Yet, this process faces formidable challenges due to its energy-intensive nature. Our study introduces efficient electrocatalysts formed from chromium sulphide nanoparticles integrated with tin oxide via a straightforward solvothermal approach, enabling water splitting in both acidic and alkaline settings. The resulting SnO<sub>2</sub>@CrS<sub>2</sub> heterostructure exhibits notable performance by requiring lower overpotentials 142 and 99 mV for achieving a current density of 10 mA cm<sup>−2</sup> during the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in 1 M KOH, and 157 and 165 mV for OER and HER in 0.1 M HClO<sub>4</sub>, respectively. Correspondingly, Tafel slopes of 30 and 45 mVdec<sup>−1</sup> in 1.0 M KOH and 52 and 32 mVdec<sup>−1</sup> in 0.1 M HClO<sub>4</sub> were observed for OER and HER respectively. These catalysts display promising efficiency at reduced overpotentials, demonstrating exceptional performance for overall water splitting. This approach of integrating an active heterostructure through interfacial tuning offers a novel pathway for developing economically viable and efficient electrocatalyst systems crucial for water splitting and H<sub>2</sub> production.</p><h3>Graphical Abstract</h3><p>Graphical abstract of synthesized catalyst</p>\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":"6333 - 6350"},"PeriodicalIF":2.3,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254123","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}
Catalysis LettersPub Date : 2024-09-16DOI: 10.1007/s10562-024-04810-y
Snehal A. Jawale, Vijay Mahajan, Bhalchandra M. Bhanage
{"title":"Nanosized-Ni Doped on Montmorillonite Catalysed Suzuki–Miyaura Coupling Reactions","authors":"Snehal A. Jawale, Vijay Mahajan, Bhalchandra M. Bhanage","doi":"10.1007/s10562-024-04810-y","DOIUrl":"10.1007/s10562-024-04810-y","url":null,"abstract":"<div><p>This work reports the synthesis and characterization of Nanosized-Ni doped montmorillonite heterocatalyst and its application for Suzuki Miyaura cross coupling of aryl iodides with aryl boronic acids. The catalyst is highly selective and did not give any other byproducts. The reaction was complete within 24 h with > 98% yield. Nickel was uniformly dispersed on the catalyst with approximately 4.0 ± 2 nm clusters of Ni. The solvent, base, catalyst loading, and catalyst precursors were varied to obtain optimum reaction conditions for highest yield. The catalyst was recovered and reused for reactions demonstrating excellent recyclability with high yield. Ni doped montmorillonite catalyst is very effective for Suzuki Miyaura cross coupling reactions and can be used to replace expensive Pd-based catalysts with earth abundant and inexpensive Ni-based catalysts.</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":"6551 - 6561"},"PeriodicalIF":2.3,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254153","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}
Catalysis LettersPub Date : 2024-09-15DOI: 10.1007/s10562-024-04830-8
Kai Wang, Qing Chen, Haiyan Xie, Miao Wang, Xu Kong, Kaiyuan Cheng, Zhiliang Jin
{"title":"The Construction of Type II Cu2O/ZnFe2O4 Heterojunction Promoted the Photocatalytic Hydrogen Production Activity","authors":"Kai Wang, Qing Chen, Haiyan Xie, Miao Wang, Xu Kong, Kaiyuan Cheng, Zhiliang Jin","doi":"10.1007/s10562-024-04830-8","DOIUrl":"10.1007/s10562-024-04830-8","url":null,"abstract":"<div><p>Photocatalytic hydrogen production by semiconductors is an optimal path to achieve solar energy conversion. In this work, Cu<sub>2</sub>O/ZnFe<sub>2</sub>O<sub>4</sub> type II heterostructure is composed of ZnFe<sub>2</sub>O<sub>4</sub> nanoparticles loaded on the surface of Cu<sub>2</sub>O microspheres, the photocatalytic hydrogen evolution performance is studied. Under the irradiation 5 h of 5 w LED lamp, the hydrogen production of Cu<sub>2</sub>O/ZnFe<sub>2</sub>O<sub>4</sub> composites was 30.8 and 12.7 times higher than pure Cu<sub>2</sub>O and pure ZnFe<sub>2</sub>O<sub>4</sub>, respectively. In addition, after four cycles of experiments for 20 h, the hydrogen production is still maintained at 67.4% of the initial activity, indicating the relatively stable hydrogen evolution activity of the composite material. The electron transfer mechanism of the photocatalyst was confirmed through the utilization of density functional theory (DFT) and in-situ irradiation X-ray photoelectron spectroscopy. The effective interfacial contact between Cu<sub>2</sub>O and ZnFe<sub>2</sub>O<sub>4</sub> nanoparticles forms a type II heterojunction, which makes the effective separation of photogenerated charges, facilitates the reduction of protons to H<sub>2</sub>, and achieves efficient hydrogen production. This work presents a strategy for simple design and fabrication of highly efficient composite photocatalysts.</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":"6227 - 6240"},"PeriodicalIF":2.3,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254156","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}