Applied Catalysis B: Environment and Energy最新文献

{"title":"Minimal doping approach to activate lattice oxygen participation in K2WO4 electrocatalysts for oxygen evolution reaction","authors":"Selvaraj Seenivasan, Miyeon Kim, Jeong Woo Han, Do-Heyoung Kim","doi":"10.1016/j.apcatb.2024.124423","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.124423","url":null,"abstract":"Understanding oxygen redox processes is pivotal for advancing oxygen evolution catalysts, critical in electrochemical devices for renewable fuel synthesis. Thermodynamic instability of high entropy metal oxides can interfere with oxygen redox reactions via electrochemical reconstruction. Transforming a WN pre-catalyst into thermodynamically stable KWO through electrochemical treatment in KOH, and incorporating minimal Fe doping, modifies the oxygen evolution reaction (OER) pathway towards oxygen redox activity, significantly influenced by the pH of the electrolyte. The Fe-doped KWO catalyst demonstrates superior OER performance, achieving 10 mA/cm^2 at an overpotential of merely 181 mV (without iR compensation) and sustaining a lifetime of 1200 h at 1000 mA/cm. Electrochemical methods and DFT calculations confirmed Fe doping creates oxygen vacancies and increases electron density near the Fermi level, enhancing the OER pathway. This methodology offers a versatile approach to adapt high entropy catalysts for broad electrochemical energy conversion applications, highlighting its potential for innovation in renewable energy technologies.","PeriodicalId":516528,"journal":{"name":"Applied Catalysis B: Environment and Energy","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141943028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lowering charge potential of Li-O2 battery to 3.25 V through a facile lithiation of Pd-CN cathode catalyst","authors":"Junkai Wang, Daniel Q. Tan, Zhongbo Hu, Xiangfeng Liu","doi":"10.1016/j.apcatb.2024.124435","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.124435","url":null,"abstract":"Li-O batteries have attracted much attention due to their high energy density. However, the high charging potential (∼4.5 V) causes serious side reactions and safety issues, which are also accompanied by a low round-trip efficiency and poor cycle life. Designing catalysts is one of the most adopted strategies to decrease the charging potential. But the effects of lowering the charging potential are quite limited. Herein, we propose a distinct strategy of electrochemical lithiation of Pd-CN to significantly reduce the overpotential of Li-O batteries from 4.28 V to 3.25 V and reveal the underlying catalysis mechanism. The lithiation promotes the formation of N defects in CN and the alloying of Li-Pd, which improves the conductivity of the catalyst and increases the number of active sites. This promotes the oxygen evolution reaction and decreases the overpotential. Theoretical calculations are further used to prove that the electrochemically tuned Pd-CN with nitrogen vacancies exhibits weak adsorption energy for LiO, enabling a significant reduction in the charge potential. This study proposes a distinct and facile strategy to address the overpotential issue in Li-O batteries.","PeriodicalId":516528,"journal":{"name":"Applied Catalysis B: Environment and Energy","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141943027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Continuous peroxymonosufate activation for antibiotics degradation via fluorine-free-Ti3C2Tx-CoFe2O4 hydrogel beads: Performance, mechanism and application","authors":"Feng Wang, Yaru Zhang, Yiyin Peng, Wenyu Xiao, Wenchao Yu, Hui Wang, Zhaoyong Bian","doi":"10.1016/j.apcatb.2024.124441","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.124441","url":null,"abstract":"This study explored the efficient, stable, and continuous treatment of antibiotic-containing wastewater through rapid electron transfer between layered fluorine-free TiCT and CoFeO nanomicrospheres. These materials were synthesized into hydrogel beads crosslinked with sodium alginate, resulting high reactivity and stability. Ff-TiCT-CoFeO catalyst facilitated peroxymonosufate (PMS) activation through rapid electron transfer and the formation of Ff-TiCT-CoFeO-PMS* species, as confirmed by experiments and DFT calculations. The cleavage of the S-O bond on Ff-TiCT-CoFeO catalyst identified as the primary mechanism for the generation of singlet oxygen (O) In a continuous flow system, the degradation efficiency of antibiotics, such as sulfamethoxazole (SMX), remained above 96.9 % with ultra-low metal leaching (<1.3 μg·L, 72 h). This research provides significant insights into the practical application of PMS activation for antibiotic degradation, offering a sustainable solution for wastewater treatment.","PeriodicalId":516528,"journal":{"name":"Applied Catalysis B: Environment and Energy","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141943080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acidic water oxidation with ultralow 131 mV overpotential over surface-reconstructed RuIr nanoalloy: Chloride-driven high performance","authors":"Yanhui Sun, Jingjun Liu, Wanli Xu, Ruixue Li, Qiheng Wang, Feng Liu, Jun Gan, Shixin Gao","doi":"10.1016/j.apcatb.2024.124443","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.124443","url":null,"abstract":"The oxygen evolution reaction (OER) in kinetics is sluggish but a key electrode reaction for various energy storage and conversion devices, such as green hydrogen from water electrolysis, rechargeable metal-air battery, sustainable carbon dioxide electroreduction, synthetic ammonia, etc. However, it still remains a major and cutting-edge challenge to pioneering catalysts with simultaneously ultrahigh activity and stability for OER, even with diverse performance enhancement strategies, such as complex composition designs, surface chemical reconstructions, and multiphase engineering have been implemented to accelerate this key electrochemical process. Herein, we proposed a chloride-triggered activation and stabilization strategy for the branched RuIr alloy coated by thin IrO layer to achieve unparalleled high-performance toward OER in acidic water. The ultralow overpotential of the activated catalyst is reduced to about 131 mV at 10 mA cm, with 79-fold enhancement of mass-activity than commercial IrO. Moreover, a modified proton exchange membrane water electrolysis (PEMWE) device was first constructed by introducing NaCl into recyclable electrolyte. It run a stably and low cell potential (1.514 V) for 170 h, having no obvious performance decay at 50 mA cm in 0.5 M HSO with 1.6 M NaCl, which far exceeding traditional IrO||Pt/C PEMWE. The outstanding performance stems from that Cl ions enable a faster lattice oxygen evolution mechanism. The novel catalyst activates asymmetric O-Ir-Cl structure induced by Cl filled oxygen vacancies, which modify the electronic and geometric properties, improving OER activity. Moreover, these adsorbed ions can also efficiently patch and refill the oxygen vacancies that ensure the long-term structure stability. Therefore, tailoring the chloride-activated Ir-based catalysts with simultaneously improved activity and stability may be a valuable guide to achieve surprisingly high-performances for acidic water splitting.","PeriodicalId":516528,"journal":{"name":"Applied Catalysis B: Environment and Energy","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141943026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A robust sandwich structural catalyst of (Cu/CuCo-MOF)2/MXene double heterojunction with outstanding activity toward hydrogen generation","authors":"Wenjing Xu, Mei Liu, Shuling Liu, Shuyan Guan, Huanhuan Zhang, Ruofan Shen, Yongfeng Wang, Baojun Li","doi":"10.1016/j.apcatb.2024.124444","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.124444","url":null,"abstract":"Non-noble metal catalysts have exhibited promising prospects in ammonia borane (NHBH) hydrolysis, but their activity and stability still need to be further improved. Herein, a 2D sandwich heterostructural catalyst with Cu/CuCo-MOF and MXene-MOF double heterojunction has been prepared by coupling TiCT MXene with bimetal organic framework nanosheets using a facile in situ growth strategy. The optimized CuCo-MOF/MX exhibits unprecedented activity with a turnover frequency (TOF) of 82.3 min and excellent cycle stability, comparable to precious metal catalysts. Spectroscopic characterization and density functional theory (DFT) calculations reveal that Cu/CuCo-MOF heterojunction provides CuCo dual active sites for catalysis, and MXene-MOF heterojunction modulates the electronic structure and valence states of Cu sites via the TiCT interlayer with 2D electron promoter effect to improve the synergistic effect of CuCo dual active sites. These modulation optimize the adsorption and dissociation of reactants, leading to a lower reaction barrier. This work provides insight into the 2D electron promoter effect, proposes a novel strategy for improving the performance of non-precious metal catalysts through constructing double heterojunction with 2D electron promoter effect.","PeriodicalId":516528,"journal":{"name":"Applied Catalysis B: Environment and Energy","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141943030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly selective oxidation of 5-HMF to HMFCA via a facile Pt-Ag co-catalytic strategy","authors":"Ming-Kun Ke, Yuan Min, Shu-Chuan Mei, Hou-Wei Zeng, Zhao-Hua Wang, Tian-Wei Hua, Jie-Jie Chen, Gui-Xiang Huang, Han-Qing Yu","doi":"10.1016/j.apcatb.2024.124431","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.124431","url":null,"abstract":"5-Hydroxymethyl-2-furancarboxylic acid (HMFCA) is an important feedstock in chemical and pharmaceutical industries. Its production through aerobic conversion of 5-hydroxymethylfurfural (5-HMF) has promising prospects but is challenged by the over-oxidation. In this work, we develop a refined Pt-Ag co-catalytic strategy to tailor the selectivity of 5-HMF’s aerobic oxidation. By simple in situ addition of AgNO to the thermal catalytic system of Pt nanoparticles, the main products of 5-HMF oxidation could be shifted from 2,5-furandicarboxylic acid (FDCA) to HMFCA with an ultrahigh selectivity of over 99 %. Density functional theory calculations demonstrate that such strategy could alter the HMFCA adsorption sites from Pt to Ag sites and prevent the oxidation of hydroxymethyl group. In addition, this strategy can be extended to other Ag species, such as AgCl, AgO and AgO. This work provides insights into the Pt-Ag synergistic catalysis and opens up a simple avenue to control the product selectivity for biomass refinement.","PeriodicalId":516528,"journal":{"name":"Applied Catalysis B: Environment and Energy","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141943077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing the nontrivial topological surface states of catalysts for effective photochemical carbon dioxide conversion","authors":"Kangwang Wang, Longfu Li, Peifeng Yu, Nannan Tang, Lingyong Zeng, Kuan Li, Chao Zhang, Rui Chen, Zaichen Xiang, Huichao Wang, Yongqing Cai, Kai Yan, Huixia Luo","doi":"10.1016/j.apcatb.2024.124428","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.124428","url":null,"abstract":"Topological semimetals with protected surface states mark a new paradigm of research beyond the early landmarks of band-structure engineering, allowing fabrication of efficient catalyst to harness the rich metallic surface states to activate specific chemical processes. Herein, we demonstrate a facile solid-phase method for in-situ doping of Ir at the Os sites in the OsSn, an alloy with topological states, which significantly improves the photocatalytic performance for the reduction of CO to CO and CH. Experimental evidence combined with theoretical calculations reveal that the nontrivial topological surface states greatly accelerate charge-separation/electron-enrichment and adsorption/activation of CO molecules, rendering highly efficient reaction channels to stimulate the formation of *COOH and *CO, as well CHO*. This work shows the promise of achieving high photocatalytic performances with synthesizing topological catalysts and provides hints on the design of novel topological catalysts with superior photoactivity towards the CO reduction reaction.","PeriodicalId":516528,"journal":{"name":"Applied Catalysis B: Environment and Energy","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141943079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interfacial engineering of RuTe2-Ru for co-generation of hydrogen and electricity","authors":"Yiming Yang, Jia Xu, Yaxin Lai, Tao Wang, Lvlv Ji, Zhun Liu, Sheng Wang","doi":"10.1016/j.apcatb.2024.124414","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.124414","url":null,"abstract":"Replacing oxygen evolution reaction with thermodynamic favored hydrazine oxidation reaction (HzOR) is an effective strategy for energy-saving hydrogen (H) production, although electricity input remains indispensable. Herein, an asymmetric hydrazine-water fuel cell (HWFC) is presented by coupling alkaline HzOR and acidic hydrogen evolution reaction (HER), thereby achieving co-generation of H and electricity output further reaping the electrochemical neutralization energy. Heterostructured RuTe-Ru nanoparticles embedded in carbon nanofibers (RuTe-Ru@CNFs) is fabricated by an electrospinning-assisted synthetic strategy, showing superior HER and HzOR catalytic performance. The asymmetric HWFC of RuTe-Ru@CNFs||RuTe-Ru@CNFs delivers an open-circuit voltage of 0.95 V with a maximum power density of 17.1 mW cm at 48.7 mA cm. Theoretical investigations elucidate the Mott-Schottky effect at the RuTe-Ru heterointerface, leading to the well-modulated electronic structure for the intrinsic catalytic enhancement. Moreover, the overall synthetic strategy is generalized to fabricate other transition metal tellurides-based and Ru selenides-based nanofibers for various potential applications.","PeriodicalId":516528,"journal":{"name":"Applied Catalysis B: Environment and Energy","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photocatalytic oxidation of methane to C1 oxygenates promoted by Fe−N−Ti electron bridge","authors":"Fangyuan Si, Mingyuan Lv, Xiang Cai, Yan Li, Meihua Zhao, Tingting Hou, Yingwei Li","doi":"10.1016/j.apcatb.2024.124417","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.124417","url":null,"abstract":"Highly efficient oxidation of methane (CH) to liquid oxygenates with O over non-noble heterogeneous catalysts under mild conditions remains a huge challenge owing to the ultra-inert C−H bond of CH molecule. In this work, we have successfully constructed photocatalysts of N-FeTiO/TiO by thermal treatment of a bimetallic amino-functionalized metal-organic framework, i.e., Fe-NH-MIL-125, aiming at photocatalytic oxidation of CH to one-carbon (C) oxygenates using O at room temperature. Impressively, the optimized photocatalyst of 10 wt%N-FeTiO/TiO exhibited superior activity in photocatalytic oxidation of CH with a formation rate of C liquid oxygenates of 5897 μmol·g·h. The selectivity of the primary products (CHOH and CHOOH) was up to 91.7 % over 10 wt%N-FeTiO/TiO. Mechanistic studies demonstrated that the presence of Fe−N−Ti electron bridge could trigger robust charge redistribution in 10 wt%N-FeTiO/TiO to form electron-deficient Fe sites and electron-rich Ti sites. The formed electron-deficient Fe sites could oxidize HO molecules to ·OH radicals. Meanwhile, electron-rich Ti sites greatly enhanced the chemisorption and activation of CH molecules, thereby synergistically promoting the generation of C liquid oxygenates.","PeriodicalId":516528,"journal":{"name":"Applied Catalysis B: Environment and Energy","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In situ fabrication of low-crystallinity (Ni,Fe)xSy nanosheet arrays via room-temperature corrosion engineering toward efficient oxygen evolution","authors":"Mingyue Chen, Wenhui Li, Yu Lu, Pengcheng Qi, Hao Wu, Kunyu Hao, Yiwen Tang","doi":"10.1016/j.apcatb.2024.124415","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.124415","url":null,"abstract":"The field of room-temperature corrosion engineering has emerged as a promising avenue for the controlled synthesis of functional nano-materials, owing to its simplicity and potential for scalability. To date, room temperature corrosion engineering has been skillfully applied and successfully used to synthesizee transition metal (oxy)hydroxides. However, the synthesis of transition metal sulfides via room-temperature corrosion encounters challenges due to the low standard electrode potential and sluggish corrosion kinetics of S/S. Here, we have successfully initiated the oxidation behavior of S on NiFe foam by adjusting the pH of the aqueous solution (containing (NH)SO and NaS), and subsequently synthesized low-crystallinity (Ni,Fe)S nanosheet arrays with significant lattice distortion and amorphous characteristics. Experimental studies combined with theoretical calculations have confirmed Fe within the (Ni,Fe)S structure functions as a highly active site while simultaneously expediting the lattice oxygen mechanism, thus yielding a remarkably efficient OER performance.","PeriodicalId":516528,"journal":{"name":"Applied Catalysis B: Environment and Energy","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}