Applied Catalysis B: Environmental最新文献

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MnOx catalysts supported on SBA-15 and MCM-41 silicas for a competitive VOCs mixture oxidation: In-situ DRIFTS investigations 以 SBA-15 和 MCM-41 硅为支撑的氧化锰催化剂用于竞争性 VOC 混合氧化:原位 DRIFTS 研究
IF 22.1 1区 化学
Applied Catalysis B: Environmental Pub Date : 2023-12-22 DOI: 10.1016/j.apcatb.2023.123613
E.J. Moreno-Román , F. Can , V. Meille , N. Guilhaume , J. González-Cobos , S. Gil
{"title":"MnOx catalysts supported on SBA-15 and MCM-41 silicas for a competitive VOCs mixture oxidation: In-situ DRIFTS investigations","authors":"E.J. Moreno-Román ,&nbsp;F. Can ,&nbsp;V. Meille ,&nbsp;N. Guilhaume ,&nbsp;J. González-Cobos ,&nbsp;S. Gil","doi":"10.1016/j.apcatb.2023.123613","DOIUrl":"10.1016/j.apcatb.2023.123613","url":null,"abstract":"<div><p><span>The catalytic oxidation<span> of different volatile organic compounds (VOCs) has been widely studied for several decades within the field of air depollution. However, there is still much to understand regarding the effects that these VOCs have on each other when they are blended together in the reaction mixture, as would be expected in many emissions. Herein, the catalytic oxidation of toluene and 2-propanol on supported manganese oxides under both single and binary VOCs oxidation conditions has been studied. We have found the catalyst activity for VOCs mineralization and its selectivity towards other by-products (i.e</span></span><em>.</em><span>, acetone or propylene from 2-propanol) to be strongly dependent on the reaction conditions, the catalyst redox properties and support acidity. We have also assessed the promotion/inhibition effects derived from the VOCs mixture and proposed the reaction mechanism in each case by means of </span><em>in-situ</em> DRIFTS measurements.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":22.1,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139030587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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-alcohol coordination promoted reduction of bismuth (III) in bismuth-based semiconductors for enhanced photocatalytic activity 金属醇配位促进铋基半导体中铋(III)的还原,从而提高光催化活性
IF 22.1 1区 化学
Applied Catalysis B: Environmental Pub Date : 2023-12-22 DOI: 10.1016/j.apcatb.2023.123652
Haiping Li , Guoan Wang , Quanhua Deng , Wenxuan Hu , Wanguo Hou
{"title":"Metal-alcohol coordination promoted reduction of bismuth (III) in bismuth-based semiconductors for enhanced photocatalytic activity","authors":"Haiping Li ,&nbsp;Guoan Wang ,&nbsp;Quanhua Deng ,&nbsp;Wenxuan Hu ,&nbsp;Wanguo Hou","doi":"10.1016/j.apcatb.2023.123652","DOIUrl":"10.1016/j.apcatb.2023.123652","url":null,"abstract":"<div><p>Metal ion doping is an extensively researched method to enhance photocatalytic activity of bismuth-based semiconductors, but function of the metal ions need be further clarified. Herein, metal-alcohol coordination was evidenced to promote reduction of Bi<sup>III</sup> in Bi-based semiconductors (e.g., Bi<sub>2</sub>MoO<sub>6</sub> hierarchical microspheres) to generated oxygen vacancies (Ovs) and Bi metal (Bi<sup>0</sup>). Ovs and Bi<sup>0</sup>, rather than widely recognized doping metal ions, play a key role for remarkable enhancement of photocatalytic activity of Bi<sub>2</sub>MoO<sub>6</sub>, for example of ∼16-fold higher photocatalytic nitrogen reduction activity, which arises from that the Ovs and Bi<sup>0</sup> can enhance photoexcited charge separation and work as surface active sites. The Ovs possess much greater efficacy than the Bi<sup>0</sup>. Formation of Bi<sup>0</sup> also induces prominent morphological variation of the microspheres. This work discloses an interesting but neglected phenomenon in alcohothermal synthesis of “metal-doped” Bi-based semiconductors and aims at drawing high attention of relevant researchers.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":22.1,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139026557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Cu-supported nano-ZrZnOx as a highly active inverse catalyst for low temperature methanol synthesis from CO2 hydrogenation 铜支撑纳米氧化锆(Nano-ZrZnOx)作为二氧化碳加氢低温合成甲醇的高活性反相催化剂
IF 22.1 1区 化学
Applied Catalysis B: Environmental Pub Date : 2023-12-22 DOI: 10.1016/j.apcatb.2023.123656
Yangzhi Xu , Zirui Gao , Yao Xu , Xuetao Qin , Xin Tang , Zhiwei Xie , Jinrong Zhang , Chuqiao Song , Siyu Yao , Wu Zhou , Ding Ma , Lili Lin
{"title":"Cu-supported nano-ZrZnOx as a highly active inverse catalyst for low temperature methanol synthesis from CO2 hydrogenation","authors":"Yangzhi Xu ,&nbsp;Zirui Gao ,&nbsp;Yao Xu ,&nbsp;Xuetao Qin ,&nbsp;Xin Tang ,&nbsp;Zhiwei Xie ,&nbsp;Jinrong Zhang ,&nbsp;Chuqiao Song ,&nbsp;Siyu Yao ,&nbsp;Wu Zhou ,&nbsp;Ding Ma ,&nbsp;Lili Lin","doi":"10.1016/j.apcatb.2023.123656","DOIUrl":"10.1016/j.apcatb.2023.123656","url":null,"abstract":"<div><p>Hydrogenation of CO<sub>2</sub> into methanol at low-temperature on Cu-based catalysts is of great significance, but remains challenging to enhance activity. In this paper, we report an inverse catalyst constructed with nano-ZrZnO<sub>x</sub><span> supported on Cu particles with outstanding methanol synthesis performance at 220 ℃, two times higher than that of commercial Cu/ZnO/Al</span><sub>2</sub>O<sub>3</sub> catalysts under the same conditions. Detailed structure characterization and performance evaluation demonstrate that the ZrZnO<sub>x</sub> mixed oxide serves as the most active oxide-metal interface site for CO<sub>2</sub> hydrogenation. The ZrZnO<sub>x</sub>/Cu inverse catalyst increases the weak and medium CO<sub>2</sub> adsorption sites which are further demonstrated responsible to the methanol productivity. <em>In situ</em> DRIFTs studies reveal that the inverse interface accelerates the reduction of asymmetric formate intermediates and prevents the generation of CO. The combination of enhanced CO<sub>2</sub> activation capability and accelerated hydrogenation rate of intermediates over the ZrZnO<sub>x</sub>/Cu inverse catalyst probably contribute to the remarkable methanol synthesis performance from CO<sub>2</sub>.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":22.1,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139030625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Localized surface plasmon resonance effect of bismuth nanoparticles in Bi/TiO2 catalysts for boosting visible light-driven CO2 reduction to CH4 Bi/TiO2 催化剂中铋纳米粒子的局部表面等离子体共振效应可促进可见光驱动的二氧化碳还原为 CH4
IF 22.1 1区 化学
Applied Catalysis B: Environmental Pub Date : 2023-12-21 DOI: 10.1016/j.apcatb.2023.123651
Wenjie He , Jing Xiong , Zhiling Tang , Yingli Wang , Xiong Wang , Hui Xu , Zhen Zhao , Jian Liu , Yuechang Wei
{"title":"Localized surface plasmon resonance effect of bismuth nanoparticles in Bi/TiO2 catalysts for boosting visible light-driven CO2 reduction to CH4","authors":"Wenjie He ,&nbsp;Jing Xiong ,&nbsp;Zhiling Tang ,&nbsp;Yingli Wang ,&nbsp;Xiong Wang ,&nbsp;Hui Xu ,&nbsp;Zhen Zhao ,&nbsp;Jian Liu ,&nbsp;Yuechang Wei","doi":"10.1016/j.apcatb.2023.123651","DOIUrl":"10.1016/j.apcatb.2023.123651","url":null,"abstract":"<div><p>Herein, the photocatalysts of metallic Bi-modified TiO<sub>2</sub><span> microsphere (namely BTO) were synthesized by one-pot solvothermal method. The localized surface plasmon resonance (LSPR) effect of introduced metallic Bi nanoparticles is beneficial to improve the absorption efficiency for visible light, and its surface hot electrons can donate to the valence band of TiO</span><sub>2</sub> for boosting the separation efficiency of light generated electron-hole pairs. BTO catalysts exhibit the super catalytic activity for visible light-driven CO<sub>2</sub> reduction with H<sub>2</sub>O to CH<sub>4</sub>. The formation amount and selectivity of CH<sub>4</sub> product over BTO-2 catalyst are 49.12 μmol g<sup>−1</sup> and 85.48 % for 4 h, respectively. Based on the results of in-situ DRIFTS and density functional theory calculation, the mechanism for photocatalytic CO<sub>2</sub> reduction is proposed: the visible light-driven LSPR effect on BTO catalyst can boost the key step of CO<sub>2</sub>* -to-HCO* for promoting selective generation of CH<sub>4</sub> product. It inspires the design of efficient photocatalysts for CO<sub>2</sub> conversion.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":22.1,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139030775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Rational modulation of Fe single-atom electronic structure in a Fe-N2B4 configuration for preferential 1O2 generation in Fenton-like reactions 合理调节 Fe-N2B4 构型中的 Fe 单原子电子结构,在类似芬顿的反应中优先生成 1O2
IF 22.1 1区 化学
Applied Catalysis B: Environmental Pub Date : 2023-12-21 DOI: 10.1016/j.apcatb.2023.123643
Yuhan Long , Zhenhua Cao , Weiran Wu , Wenhao Liu , Peizhen Yang , Xuesong Zhan , Rongzhi Chen , Dongfang Liu , Wenli Huang
{"title":"Rational modulation of Fe single-atom electronic structure in a Fe-N2B4 configuration for preferential 1O2 generation in Fenton-like reactions","authors":"Yuhan Long ,&nbsp;Zhenhua Cao ,&nbsp;Weiran Wu ,&nbsp;Wenhao Liu ,&nbsp;Peizhen Yang ,&nbsp;Xuesong Zhan ,&nbsp;Rongzhi Chen ,&nbsp;Dongfang Liu ,&nbsp;Wenli Huang","doi":"10.1016/j.apcatb.2023.123643","DOIUrl":"10.1016/j.apcatb.2023.123643","url":null,"abstract":"<div><p>The important role of optimizing the coordination environment of single-atom catalysts (SACs) for selective production of singlet oxygen (<sup>1</sup>O<sub>2</sub>) in Fenton-like reactions is revealed. Herein, we introduce electron-depletion boron atoms to manipulate the coordination number and atom types of Fe site simultaneously and construct a six-coordination Fe-N<sub>2</sub>B<sub>4</sub> catalyst for peroxymonosulfte (PMS) activation. Particularly, it achieves 98.68% <sup>1</sup>O<sub>2</sub> generation selectivity superior to unregulated Fe-N<sub>4</sub><span> catalyst (64.57%), exhibiting an exceptional bisphenol A (BPA) degradation performance with a reaction rate constant of 0.249 min</span><sup>−1</sup>. Experimental and theoretical results unveil that the tailored electronic structure of Fe not only enhances the adsorption selectivity of terminal oxygen atoms in PMS and alters the reaction pathway preference, but also facilitates the electron donation from PMS and lowers the energy barrier for <sup>1</sup>O<sub>2</sub> generation. This work provides a universal strategy for rational and precise modulation of SACs for specific reactive species conversion in environment remediation.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":22.1,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138991171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Steering single-site metallaphotocatalytic pathway by accumulated electron on carbon nitride support 通过氮化碳支持物上的累积电子引导单点金属光催化途径
IF 22.1 1区 化学
Applied Catalysis B: Environmental Pub Date : 2023-12-21 DOI: 10.1016/j.apcatb.2023.123653
Bangrong Ming , Tongtong Jia , Yufan Zhang , Jikun Li , Chuncheng Chen , Wenjing Song , Jincai Zhao
{"title":"Steering single-site metallaphotocatalytic pathway by accumulated electron on carbon nitride support","authors":"Bangrong Ming ,&nbsp;Tongtong Jia ,&nbsp;Yufan Zhang ,&nbsp;Jikun Li ,&nbsp;Chuncheng Chen ,&nbsp;Wenjing Song ,&nbsp;Jincai Zhao","doi":"10.1016/j.apcatb.2023.123653","DOIUrl":"10.1016/j.apcatb.2023.123653","url":null,"abstract":"<div><p><span>Organic halide transformation is of high importance for fine chemical synthesis and environmental remediation. Integrated photocatalytic platforms open up distinctive reaction pathway for carbon-halogen bond activation/reconstruction. Herein we reveal carbon nitride (CN)-ligated single atom nickel (Ni</span><sub>1</sub>/CN), with accumulated electron on the CN, paves Ni-mediated electron-proton transfer, enabling hydrodehalogenation, along with the catalytic carbon–oxygen (C–O) coupling. The preference for hydrodehalogenation positively correlates with density of electron on CN. EPR measurements suggest photo-generated Ni<sup>I</sup><span><span> interacts with aryl halides, followed by electron transfer or reductive elimination<span> to give different products. Further kinetic studies on hydrodehalogenation/C–O coupling show the reaction orders of 0.1/0.5 in aryl halide and 1.5/0.03 in (CN) electron, unveiling rate-determining step as </span></span>oxidative addition to Ni</span><sup>I</sup> and (CN) electron transfer for the two conversions. Our work advances in modulating aryl halide conversion by carrier accumulation on the photoactive support and guides metallaphotocatalytic platform design/operation toward target transformations.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":22.1,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139020309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Steering Single-Site Metallaphotocatalytic Pathway by Accumulated Electron on Carbon Nitride Support 通过氮化碳支持物上的累积电子引导单点金属光催化途径
IF 22.1 1区 化学
Applied Catalysis B: Environmental Pub Date : 2023-12-21 DOI: 10.1016/j.apcatb.2023.123653
Bangrong Ming, Tongtong Jia, Yufan Zhang, Jikun Li, Chuncheng Chen, Wenjing Song, Jincai Zhao
{"title":"Steering Single-Site Metallaphotocatalytic Pathway by Accumulated Electron on Carbon Nitride Support","authors":"Bangrong Ming, Tongtong Jia, Yufan Zhang, Jikun Li, Chuncheng Chen, Wenjing Song, Jincai Zhao","doi":"10.1016/j.apcatb.2023.123653","DOIUrl":"https://doi.org/10.1016/j.apcatb.2023.123653","url":null,"abstract":"<p>Organic halide transformation is of high importance for fine chemical synthesis and environmental remediation. Integrated photocatalytic platforms open up distinctive reaction pathway for carbon-halogen bond activation/reconstruction. Herein we reveal carbon nitride (CN)-ligated single atom nickel (Ni<sub>1</sub>/CN), with accumulated electron on the CN, paves Ni-mediated electron-proton transfer, enabling hydrodehalogenation, along with the catalytic carbon–oxygen (C–O) coupling. The preference for hydrodehalogenation positively correlates with density of electron on CN. EPR measurements suggest photo-generated Ni<sup>I</sup> interacts with aryl halides, followed by electron transfer or reductive elimination to give different products. Further kinetic studies on hydrodehalogenation/ C–O coupling show the reaction orders of 0.1/0.5 in aryl halide and 1.5/0.03 in (CN) electron, unveiling rate-determining step as oxidative addition to Ni<sup>I</sup> and (CN) electron transfer for the two conversions. Our work advances in modulating aryl halide conversion by carrier accumulation on the photoactive support and guides metallaphotocatalytic platform design/operation toward target transformations.</p>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":22.1,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139030659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
A robust asymmetric diatomic electrocatalyst for oxygen reduction reaction in both acidic and alkaline media 用于酸性和碱性介质中氧还原反应的强效不对称二原子电催化剂
IF 22.1 1区 化学
Applied Catalysis B: Environmental Pub Date : 2023-12-20 DOI: 10.1016/j.apcatb.2023.123645
Pianpian Zhang , Tingting Sun , Rong Jiang , Tianyu Zheng , Qingmei Xu , Ruanbo Hu , Xinxin Wang , Kang Wang , Lianbin Xu , Dingsheng Wang , Jianzhuang Jiang
{"title":"A robust asymmetric diatomic electrocatalyst for oxygen reduction reaction in both acidic and alkaline media","authors":"Pianpian Zhang ,&nbsp;Tingting Sun ,&nbsp;Rong Jiang ,&nbsp;Tianyu Zheng ,&nbsp;Qingmei Xu ,&nbsp;Ruanbo Hu ,&nbsp;Xinxin Wang ,&nbsp;Kang Wang ,&nbsp;Lianbin Xu ,&nbsp;Dingsheng Wang ,&nbsp;Jianzhuang Jiang","doi":"10.1016/j.apcatb.2023.123645","DOIUrl":"10.1016/j.apcatb.2023.123645","url":null,"abstract":"<div><p><span>Herein, an asymmetric diatomic site oxygen reduction reaction (ORR) electrocatalyst with atomically dispersed Fe and Cu species co-anchored on porous nitrogen-doped polyhedra carbon was successfully prepared through a facile cooperation of post-adsorption and two-step pyrolysis method. Density functional theory (DFT) calculations reveal that the asymmetric FeCu dual atomic site experiences a symmetry destruction of electron transfer due to the existing Cu-N</span><sub>4</sub> sites and thus results in the electron redistribution in Fe<sub>SA</sub>Cu<sub>SA</sub>/NC, contributing significantly to the optimization of intermediates adsorption and acceleration of kinetics during ORR process. Attributed to the structural advantages of Fe<sub>SA</sub>-N<sub>4</sub>&amp;Cu<sub>SA</sub>-N<sub>4</sub> sites and highly porous carbon matrix, the Fe<sub>SA</sub>Cu<sub>SA</sub>/NC catalyst exhibits excellent electrocatalytic ORR performance with half-wave potentials (<em>E</em><sub><em>1/2</em></sub>) of 0.86 and 0.88 V versus reversible hydrogen electrode in 0.1 M HClO<sub>4</sub> and 0.1 M KOH solutions as well as high durability. Moreover, Fe<sub>SA</sub>Cu<sub>SA</sub>/NC-based H<sub>2</sub>/O<sub>2</sub> fuel cell and zinc-air battery present superior performance with high peak power density.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":22.1,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138821334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
A S-type 2D/2D heterojunction via intercalating ultrathin g-C3N4 into NH4V4O10 nanosheets and the boosted removal of ciprofloxacin 通过在 NH4V4O10 纳米片中插层超薄 g-C3N4 实现 S 型二维/二维异质结并提高环丙沙星的去除率
IF 22.1 1区 化学
Applied Catalysis B: Environmental Pub Date : 2023-12-20 DOI: 10.1016/j.apcatb.2023.123642
Yuxuan Ma , Dan He , Quansheng Liu , Shukun Le , Xiaojing Wang
{"title":"A S-type 2D/2D heterojunction via intercalating ultrathin g-C3N4 into NH4V4O10 nanosheets and the boosted removal of ciprofloxacin","authors":"Yuxuan Ma ,&nbsp;Dan He ,&nbsp;Quansheng Liu ,&nbsp;Shukun Le ,&nbsp;Xiaojing Wang","doi":"10.1016/j.apcatb.2023.123642","DOIUrl":"10.1016/j.apcatb.2023.123642","url":null,"abstract":"<div><p>Exploring cheap, eco-friendliness, and highly efficiency photocatalysts for improving the degradation performance of ciprofloxacin (CIP) is a challenge in the environmental remediation field. Herein, 2D/2D ultrathin g-C<sub>3</sub>N<sub>4</sub>/NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub> (CNNS/NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub>) heterojunction is successfully prepared by intercalating g-C<sub>3</sub>N<sub>4</sub> nanosheets into the ultrathin NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub><span> nanobelts. For the optimized 50-CNNS/NH</span><sub>4</sub>V<sub>4</sub>O<sub>10</sub>, the removal rate is 92% for 10 mg·L<sup>−1</sup><span> CIP under simulated solar light, far better than the separated components CNNS and NH</span><sub>4</sub>V<sub>4</sub>O<sub>10</sub>. Moreover, the wide degraded concentration of CIP ranges from 5 to 40 mg·L<sup>−1</sup> devotes a prospect of practical application. The mechanism investigation confirms the intercalating action can break the interlaminar bonding linkage of NH<sub>4</sub>, which increases the surface NH<sub>4</sub><sup>+</sup> content and promotes the steered adsorption capacity toward ciprofloxacin through binding to F<sup>-</sup><span> in CIP via H-bonding. This work provides a novel design idea for constructing 2D/2D intercalated nanocomposite<span> for the application in the removal of the deleterious fluoric-containing organic pollutants in water environment.</span></span></p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":22.1,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139017277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Tailoring olefin distribution via tuning rare earth metals in bifunctional Cu-RE/beta-zeolite catalysts for ethanol upgrading 通过调节双功能铜-RE/β-沸石催化剂中的稀土金属来调整烯烃分布,从而实现乙醇提纯
IF 22.1 1区 化学
Applied Catalysis B: Environmental Pub Date : 2023-12-20 DOI: 10.1016/j.apcatb.2023.123648
Meijun Li , Junyan Zhang , Stephen C. Purdy , Fan Lin , Kinga A. Unocic , Michael Cordon , Zili Wu , Huamin Wang , Jacklyn Hall , A. Jeremy Kropf , Theodore R. Krause , Brian Davison , Zhenglong Li , Andrew D. Sutton
{"title":"Tailoring olefin distribution via tuning rare earth metals in bifunctional Cu-RE/beta-zeolite catalysts for ethanol upgrading","authors":"Meijun Li ,&nbsp;Junyan Zhang ,&nbsp;Stephen C. Purdy ,&nbsp;Fan Lin ,&nbsp;Kinga A. Unocic ,&nbsp;Michael Cordon ,&nbsp;Zili Wu ,&nbsp;Huamin Wang ,&nbsp;Jacklyn Hall ,&nbsp;A. Jeremy Kropf ,&nbsp;Theodore R. Krause ,&nbsp;Brian Davison ,&nbsp;Zhenglong Li ,&nbsp;Andrew D. Sutton","doi":"10.1016/j.apcatb.2023.123648","DOIUrl":"10.1016/j.apcatb.2023.123648","url":null,"abstract":"<div><p>Bioethanol to middle distillate technologies have offered a unique solution to produce renewable aviation fuel for decarbonizing the hard-to-electrify sectors. Here, we have developed the series of bimetallic Cu- and rare earth-containing (RE) Beta zeolite catalysts that yield high C<sub>3+</sub><span> alkene<span> selectivity from ethanol upgrading (&gt;80% selectivity at ∼100% conversion, 623 K). The formation rates of butene isomers to C</span></span><sub>5+</sub> alkenes are linearly correlated with the strength of Lewis acidic RE identity, which follows the sequence of Yb<sub>12</sub>/Beta &gt;Y<sub>7</sub>/Beta &gt; Gd<sub>12</sub>/Beta &gt; Ce<sub>10</sub>/Beta &gt; La<sub>12</sub>/Beta. Rate measurements indicate that the RE selection plays the vital role in altering the rate of the key competitive reactions within the ethanol-to-alkenes reaction network, namely C<sub>4</sub> alcohol dehydration and C-C chain growth, which dictate alkene product distributions. These findings indicate a feasible and promising method for tailoring alkene product distributions from ethanol upgrading, which is of notable significance to the generation of renewable middle distillates.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":22.1,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138816704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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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