Frontiers of Chemical Science and Engineering最新文献

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In situ growth of phosphorized ZIF-67-derived amorphous CoP/Cu2O@CF electrocatalyst for efficient hydrogen evolution reaction 原位生长磷酸化ZIF-67衍生的无定形CoP/Cu2O@CF高效析氢反应的电催化剂
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2023-06-12 DOI: 10.1007/s11705-023-2320-1
Ruiwen Qi, Xiao Liu, Hongkai Bu, Xueqing Niu, Xiaoyang Ji, Junwei Ma, Hongtao Gao
{"title":"In situ growth of phosphorized ZIF-67-derived amorphous CoP/Cu2O@CF electrocatalyst for efficient hydrogen evolution reaction","authors":"Ruiwen Qi,&nbsp;Xiao Liu,&nbsp;Hongkai Bu,&nbsp;Xueqing Niu,&nbsp;Xiaoyang Ji,&nbsp;Junwei Ma,&nbsp;Hongtao Gao","doi":"10.1007/s11705-023-2320-1","DOIUrl":"10.1007/s11705-023-2320-1","url":null,"abstract":"<div><p>Transition metal phosphides have been extensively studied for catalytic applications in water splitting. Herein, we report an <i>in situ</i> phosphorization of zeolitic imidazole frameworks (ZIF-67) to generate amorphous cobalt phosphide/ZIF-67 heterojunction on a self-supporting copper foam (CF) substrate with excellent performance for hydrogen evolution reaction (HER). The needle-leaf like copper hydroxide was anchored on CF surface, which acted as implantation to grow ZIF-67. The intermediate product was phosphorized to obtain final electro-catalyst (CoP/Cu<sub>2</sub>O@CF) with uniform particle size, exhibiting a rhombic dodecahedron structure with wrinkles on the surface. The electrochemical measurement proved that CoP/Cu<sub>2</sub>O@CF catalyst exhibited excellent HER activity and long-term stability in 1.0 mol·L<sup>−1</sup> KOH solution. The overpotential was only 62 mV with the Tafel slope of 83 mV·dec<sup>−1</sup> at a current density of 10 mA·cm<sup>−2</sup>, with a large electrochemical active surface area. It also showed competitive performance at large current which indicated the potential application to industrial water electrolysis to produce hydrogen. First-principle calculations illustrated that benefit from the construction of CoP/ZIF-67 heterojunction, the <i>d</i>-band center of CoP downshifted after bonding with ZIF-67 and the Gibbs free energy (Δ<i>G</i><sub>H*</sub>) changed from −0.18 to −0.11 eV, confirming both decrease in overpotential and excellent HER activity. This work illustrates the efficient HER activity of CoP/Cu<sub>2</sub>O@CF catalyst, which will act as a potential candidate for precious metal electrocatalysts.</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 10","pages":"1430 - 1439"},"PeriodicalIF":4.5,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41228855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Fabricating sustainable lignin-derived porous carbon as electrode for high-performance supercapacitors 可持续木质素衍生多孔碳作为高性能超级电容器电极的制备
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2023-06-11 DOI: 10.1007/s11705-023-2313-0
Wei Liu, Zhikun Li, Ranran Sang, Jinsong Li, Xueping Song, Qingxi Hou
{"title":"Fabricating sustainable lignin-derived porous carbon as electrode for high-performance supercapacitors","authors":"Wei Liu,&nbsp;Zhikun Li,&nbsp;Ranran Sang,&nbsp;Jinsong Li,&nbsp;Xueping Song,&nbsp;Qingxi Hou","doi":"10.1007/s11705-023-2313-0","DOIUrl":"10.1007/s11705-023-2313-0","url":null,"abstract":"<div><p>Lignocellulosic biomass such as plants and agricultural waste are ideal to tackle the current energy crisis and energy-related environmental issues. Carbon-rich lignin is abundant in lignocellulosic biomass, whose high-value transformation and utilization has been the most urgent problem to be solved. Herein, we propose a method for the preparation of porous carbon from lignin employing an H<sub>3</sub>PO<sub>4</sub>-assisted hydrothermal method. We characterize the as-prepared lignin-derived porous carbon and investigate its potential for energy storage. After assisted hydrothermal treatment followed by carbonization at 800 °C, the lignin-derived porous carbon displays a high specific capacitance (223.6 F·g<sup>?1</sup> at 0.1 A·g<sup>?1</sup>) and excellent cycling ability with good capacitance retention. In this present study, the resultant lignin-derived porous carbon was used as the electrode of a supercapacitor, illustrating yet another potential high-value use for lignin, namely as a candidate for the sustainable fabrication of main supercapacitor components.</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 8","pages":"1065 - 1074"},"PeriodicalIF":4.5,"publicationDate":"2023-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4468768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Construction of sustainable, colored and multifunctional protein silk fabric using biomass riboflavin sodium phosphate 生物质核黄素磷酸钠构建可持续着色多功能蛋白丝织物
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2023-06-11 DOI: 10.1007/s11705-023-2321-0
Wen-Jie Jin, Yu Xin, Xian-Wei Cheng, Jin-Ping Guan, Guo-Qiang Chen
{"title":"Construction of sustainable, colored and multifunctional protein silk fabric using biomass riboflavin sodium phosphate","authors":"Wen-Jie Jin,&nbsp;Yu Xin,&nbsp;Xian-Wei Cheng,&nbsp;Jin-Ping Guan,&nbsp;Guo-Qiang Chen","doi":"10.1007/s11705-023-2321-0","DOIUrl":"10.1007/s11705-023-2321-0","url":null,"abstract":"<div><p>Riboflavin sodium phosphate has been confirmed as a promising biomass product derived from natural plants. In this paper, a novel method of dyeing and multifunctional modification of silk fabric by impregnation with riboflavin sodium phosphate was proposed, such that protein silk fabric can be endowed with bright yellow color and multi-functionality. The results of this paper confirmed that the pH and concentration of riboflavin sodium phosphate solution are critical factors for dyeing and multifunctional modification. Attractively, the photochromic performance was one of the most distinctive features of the modified silk fabric, and the dyed silk fabric turned into fluorescent green from original yellow under 365 nm ultraviolet lamp. Furthermore, the modified silk fabric exhibited good antibacterial properties with a high inhibition rate of 92% for <i>Escherichia coli</i>. Besides, the flame retardancy of silk fabric was significantly improved after modification. The damaged length of modified silk fabric with 40% owf riboflavin sodium phosphate was lower than 10.4 cm and passed the B<sub>1</sub> classification. As revealed by the result of this paper, riboflavin sodium phosphate is sufficiently effective in serving as an ecofriendly multifunctional agent for strengthening the add-value of silk textiles.</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 8","pages":"1131 - 1139"},"PeriodicalIF":4.5,"publicationDate":"2023-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4467627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tailoring the microstructure and properties of PES/SPSf loose nanofiltration membranes using SPES as a hydrophilic polymer for the effective removal of dyes via steric hindrance and charge effect 使用SPES作为亲水性聚合物,通过空间位阻和电荷效应对PES/SPSf松散纳滤膜的微观结构和性能进行定制,以有效去除染料
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2023-06-06 DOI: 10.1007/s11705-023-2338-4
Xiaowei Liu, Christine Matindi, Sania Kadanyo, Mengyang Hu, Shuqian Yang, Gansheng Liu, Ran Tao, Zhenyu Cui, Xiaohua Ma, Kuanjun Fang, Jianxin Li
{"title":"Tailoring the microstructure and properties of PES/SPSf loose nanofiltration membranes using SPES as a hydrophilic polymer for the effective removal of dyes via steric hindrance and charge effect","authors":"Xiaowei Liu,&nbsp;Christine Matindi,&nbsp;Sania Kadanyo,&nbsp;Mengyang Hu,&nbsp;Shuqian Yang,&nbsp;Gansheng Liu,&nbsp;Ran Tao,&nbsp;Zhenyu Cui,&nbsp;Xiaohua Ma,&nbsp;Kuanjun Fang,&nbsp;Jianxin Li","doi":"10.1007/s11705-023-2338-4","DOIUrl":"10.1007/s11705-023-2338-4","url":null,"abstract":"<div><p>Herein, polyethersulfone (PES) and sulfonated polysulfone (SPSf) blend membranes were prepared with addition of sulfonated polyethersulfone (SPES) as a hydrophilic polymer and adipic acid as a porogen via non-solvent induced phase separation method for effective fractionation of dyes based on the influence of steric hindrance and charge effect. Raman spectroscopy and molecular dynamic simulation modeling confirmed that hydrogen bonds between PES, SPSf, SPES, and adipic acid were crucial to membrane formation and spatial arrangement. Further addition of hydrophilic SPES resulted in a membrane with reduced pore size and molecular weight cut-off as well as amplified negative charge and pure water permeance. During separation, the blend membranes exhibited higher rejection rates for nine types of small molecular weight (269.3–800 Da) dyes than for neutral polyethylene glycol molecules (200–1000 Da). This was attributed to the size effect and the synergistic effect between steric hindrance and charge repulsion. Notably, the synergistic impact decreased with dye molecular weight, while greater membrane negative charge enhanced small molecular dye rejection. Ideal operational stability and anti-fouling performance were best observed in M2 (PES/SPSf/SPES, 3.1 wt %). Summarily, this study demonstrates that SPES with −SO<sub>3</sub><sup>−</sup> functional groups can be applied to control the microstructure and separation of membranes.\u0000</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 10","pages":"1555 - 1567"},"PeriodicalIF":4.5,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41228843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Sustainable conversion regenerated cellulose into cellulose oleate by sonochemistry 用声化学法可持续地将再生纤维素转化为油酸纤维素
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2023-06-05 DOI: 10.1007/s11705-023-2317-9
De-Fa Hou, Pan-Pan Yuan, Zi-Wei Feng, Meng An, Pei-Yao Li, Can Liu, Ming-Bo Yang
{"title":"Sustainable conversion regenerated cellulose into cellulose oleate by sonochemistry","authors":"De-Fa Hou,&nbsp;Pan-Pan Yuan,&nbsp;Zi-Wei Feng,&nbsp;Meng An,&nbsp;Pei-Yao Li,&nbsp;Can Liu,&nbsp;Ming-Bo Yang","doi":"10.1007/s11705-023-2317-9","DOIUrl":"10.1007/s11705-023-2317-9","url":null,"abstract":"<div><p>Derivatization has great potential for the high-value utilization of cellulose by enhancing its processability and functionality. However, due to the low reactivity of natural cellulose, it remains challenging to rapidly prepare cellulose derivatives with high degrees of substitution. The “cavitation effect” of ultrasound can reduce the particle size and crystalline index of cellulose, which provides a possible method for preparing cellulose derivatives. Herein, a feasible method was proposed for efficiently converting regenerated cellulose to cellulose oleate with the assistance of ultrasonic treatment. By adjusting the reaction conditions including ultrasonic intensity, feeding ratios of oleic acid, reaction time, and reaction solvent, a series of cellulose oleates with degrees of substitution ranging from 0.37 to 1.71 were synthesized. Additionally, the effects of different reaction conditions on the chemical structures, crystalline structures, and thermal behaviors were investigated thoroughly. Cellulose oleates with degrees of substitution exceeding 1.23 exhibited amorphous structures and thermoplasticity with glass transition temperatures at 159.8 to 172.6 °C. This study presented a sustainable and practicable method for effectively derivatizing cellulose.</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 8","pages":"1096 - 1108"},"PeriodicalIF":4.5,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4218254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Insights into influence of aging processes on zero-valent iron modified biochar in copper(II) immobilization: from batch solution to pilot-scale investigation 老化过程对铜(II)固定化中零价铁修饰生物炭的影响:从批量解决方案到中试规模研究
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2023-06-05 DOI: 10.1007/s11705-022-2282-8
Huabin Wang, Dingxiang Chen, Yi Wen, Ting Cui, Ying Liu, Yong Zhang, Rui Xu
{"title":"Insights into influence of aging processes on zero-valent iron modified biochar in copper(II) immobilization: from batch solution to pilot-scale investigation","authors":"Huabin Wang,&nbsp;Dingxiang Chen,&nbsp;Yi Wen,&nbsp;Ting Cui,&nbsp;Ying Liu,&nbsp;Yong Zhang,&nbsp;Rui Xu","doi":"10.1007/s11705-022-2282-8","DOIUrl":"10.1007/s11705-022-2282-8","url":null,"abstract":"<div><p>The zero-valent iron modified biochar materials are widely employed for heavy metals immobilization. However, these materials would be inevitably aged by natural forces after entering into the environment, while there are seldom studies reported the aging effects of zero-valent iron modified biochar. In this work, the hydrogen peroxide and hydrochloric acid solution were applied to simulate aging conditions of zero-valent iron modified biochar. According to the results, the adsorption capacity of copper(II) contaminants on biochar, zero-valent iron modified biochar-1, and zero-valent iron modified biochar-2 after aging was decreased by 15.36%, 22.65% and 23.26%, respectively. The surface interactions were assigned with chemisorption occurred on multi-molecular layers, which were proved by the pseudo-second-order and Langmuir models. After aging, the decreasing of capacity could be mainly attributed to the inhibition of ion-exchange and zero-valent iron oxidation. Moreover, the plant growth and soil leaching experiments also proved the effects of aging treatment, the zero-valent iron modified biochar reduced the inhibition of copper(II) bioavailability and increased the mobility of copper(II) after aging. All these results bridged the gaps between bio-adsorbents customization and their environmental behaviors during practical agro-industrial application.</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 7","pages":"880 - 892"},"PeriodicalIF":4.5,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4550716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Latest advances in ionic liquids promoted synthesis and application of advanced biomass materials 离子液体的最新进展促进了先进生物质材料的合成和应用
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2023-06-05 DOI: 10.1007/s11705-023-2316-x
Ting He, Jipeng Yan, Wenzhe Xiao, Jian Sun
{"title":"Latest advances in ionic liquids promoted synthesis and application of advanced biomass materials","authors":"Ting He,&nbsp;Jipeng Yan,&nbsp;Wenzhe Xiao,&nbsp;Jian Sun","doi":"10.1007/s11705-023-2316-x","DOIUrl":"10.1007/s11705-023-2316-x","url":null,"abstract":"<div><p>The utilization of sustainable resources provides a path to relieving the problem of dependence on fossil resources. In this context, biomass materials have become a feasible substitute for petroleum-based materials. The development of biomass materials is booming and advanced biomass materials with various functional properties are used in many fields including medicine, electrochemistry, and environmental science. In recent years, ionic liquids have been widely used in biomass pretreatments and processing owing to their “green” characteristics and adjustable physicochemical properties. Thus, the effects of ionic liquids in biomass materials generation require further study. This review summarizes the multiple roles of ionic liquids in promoting the synthesis and application of advanced biomass materials as solvents, structural components, and modifiers. Finally, a prospective approach is proposed for producing additional higher-quality possibilities between ionic liquids and advanced biomass materials.</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 7","pages":"798 - 816"},"PeriodicalIF":4.5,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4218153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cu-doped Bi/Bi2WO6 catalysts for efficient N2 fixation by photocatalysis Cu掺杂Bi/Bi2WO6催化剂用于光催化高效固氮
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2023-06-05 DOI: 10.1007/s11705-023-2312-1
Xiaojing Li, Chunran Zhao, Junfeng Wang, Jiayu Zhang, Ying Wu, Yiming He
{"title":"Cu-doped Bi/Bi2WO6 catalysts for efficient N2 fixation by photocatalysis","authors":"Xiaojing Li,&nbsp;Chunran Zhao,&nbsp;Junfeng Wang,&nbsp;Jiayu Zhang,&nbsp;Ying Wu,&nbsp;Yiming He","doi":"10.1007/s11705-023-2312-1","DOIUrl":"10.1007/s11705-023-2312-1","url":null,"abstract":"<div><p>In this paper, Cu-doped Bi<sub>2</sub>WO<sub>6</sub> was synthesized via a solvothermal method and applied it in photocatalytic N<sub>2</sub> immobilization. Characterization results showed the presence of a small amount of metallic Bi in the photocatalyst, indicating that the synthesized photocatalyst is actually Bi/Cu-Bi<sub>2</sub>WO<sub>6</sub> composite. The doped Cu had a valence state of +2 and most likely substituted the position of Bi<sup>3+</sup>. The introduced Cu did not affect the metallic Bi content, but mainly influenced the energy band structure of Bi<sub>2</sub>WO<sub>6</sub>. The band gap was slightly narrowed, the conduction band was elevated, and the work function was reduced. The reduced work function improved the transfer and separation of charge carriers, which mainly caused the increased photoactivity. The optimized NH<sub>3</sub> generation rates of Bi/Cu-Bi<sub>2</sub>WO<sub>6</sub> reached 624 and 243 (µmol·L<sup>−1</sup>·g<sup>−1</sup>·h<sup>−1</sup> under simulated solar and visible light, and these values were approximately 2.8 and 5.9 times higher those of Bi/Bi<sub>2</sub>WO<sub>6</sub>, respectively. This research provides a method for improving the photocatalytic N<sub>2</sub> fixation and may provide more information on the design and preparation of heteroatom-doped semiconductor photocatalysts for N<sub>2</sub>-to-NH<sub>3</sub> conversion.\u0000</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 10","pages":"1412 - 1422"},"PeriodicalIF":4.5,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41229109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
The stabilization effect of Al2O3 on unconventional Pb/SiO2 catalyst for propane dehydrogenation Al2O3对非常规Pb/SiO2丙烷脱氢催化剂的稳定作用
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2023-06-05 DOI: 10.1007/s11705-023-2315-y
Guowei Wang, Lanhui Zhou, Huanling Zhang, Chunlei Zhu, Xiaolin Zhu, Honghong Shan
{"title":"The stabilization effect of Al2O3 on unconventional Pb/SiO2 catalyst for propane dehydrogenation","authors":"Guowei Wang,&nbsp;Lanhui Zhou,&nbsp;Huanling Zhang,&nbsp;Chunlei Zhu,&nbsp;Xiaolin Zhu,&nbsp;Honghong Shan","doi":"10.1007/s11705-023-2315-y","DOIUrl":"10.1007/s11705-023-2315-y","url":null,"abstract":"<div><p>Similar to Sn, Pb located at the same group (IVA) in the periodic table of elements, can also catalyze propane dehydrogenation to propene, while a fast deactivation can be observed. To enhance the stability, the traditional carrier Al<sub>2</sub>O<sub>3</sub> with a small amount, was introduced into Pb/SiO<sub>2</sub> catalyst in this study. It has been proved that Al<sub>2</sub>O<sub>3</sub> can inhibit the reduction of PbO, and weaken the agglomeration and loss of Pb species due to its enhanced interaction with Pb species. As a result, 3Al15Pb/SiO<sub>2</sub> catalyst exhibits a much higher stability up to more than 150 h. In addition, a simple schematic diagram of the change of surface species on the catalyst surface after Al<sub>2</sub>O<sub>3</sub> addition was also proposed.</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 10","pages":"1423 - 1429"},"PeriodicalIF":4.5,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41229111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Investigation of the roles of lignin in biomass-based hydrogel for efficient desalination 木质素在生物质基水凝胶中高效脱盐作用的研究
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2023-06-02 DOI: 10.1007/s11705-023-2311-2
Qizhao Shao, Lan Sun, Xinzhou Wu, Dafeng Zheng
{"title":"Investigation of the roles of lignin in biomass-based hydrogel for efficient desalination","authors":"Qizhao Shao,&nbsp;Lan Sun,&nbsp;Xinzhou Wu,&nbsp;Dafeng Zheng","doi":"10.1007/s11705-023-2311-2","DOIUrl":"10.1007/s11705-023-2311-2","url":null,"abstract":"<div><p>The shortage of freshwater has become a global challenge, and solar-driven interfacial evaporation for desalination is a promising way to alleviate the crisis. To develop highly efficient and environmentally friendly photothermal evaporator, the hydroxyethyl cellulose (HEC)/alkaline lignin (AL)/graphene oxide (GO) hydrogels (CLGs) with remarkable evaporative performance were successfully fabricated by a facile sol–gel method using biomass residues. The influence of AL content on the physicochemical properties of the evaporator was investigated. The increasing content of AL improves the mechanical properties, saturated water content and crosslink density of the hydrogels. The designed materials exhibit outstanding thermal insulation capacity (the thermal conductivity of less than 0.05 Wm<sup>−1</sup>K<sup>−1</sup>) and high light absorption capacity of more than 97%. The solar evaporation efficiency and water evaporation rate of the HEC/64 wt % of AL/GO hydrogels (CLG4) achieve 92.1% and 2.55 kgm<sup>−2</sup>h<sup>−1</sup> under 1 sun, respectively. The salt resistance test results reveal that the evaporation rate of the CLG4 can still reach 2.44 kgm<sup>−2</sup>h<sup>−1</sup> in 3.5 wt % NaCl solution. The solar evaporation rate of the CLG4 can maintain in the range of 2.45–2.59 kgm<sup>−2</sup>h<sup>−1</sup> in five cycles. This low-cost lignin-based photothermal evaporator offers a sustainable strategy for desalination.</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 7","pages":"954 - 965"},"PeriodicalIF":4.5,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4091353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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