Catalysts
·
2017
·Vol. 7
·期 7
·200
·
IF 3.082
Hui Dai,Mingyuan Zhu,Haiyang Zhang,Feng Yu,Chao Wang,Bin Dai
Recently, many scientists have focused on the development of green industrial technology. However, the process of synthesizing vinyl chloride faces the problem of Hg pollution. Via a novel approach, we used two elements Mo and Ti to prepare an inexpensive and green binary transition metal nitride (BTMN) as the active ingredient in a catalyst with nano-sized particles and an excellent degree of activation, which was supported on activated carbon. When the Mo/Ti mole ratio was 3:1, the conversion of acetylene reached 89% and the selectivity exceeded 98.5%. The doping of Ti in Mo-based catalysts reduced the capacity of adsorption for acetylene and also increased the adsorption of hydrogen chloride. Most importantly, the performance of the BTMN excelled those of the individual transition metal nitrides, due to the synergistic activity between Mo and Ti. This will expand the new epoch of the employment of transition metal nitrides as catalysts in the hydrochlorination of acetylene reaction.Keywords:binary transition metal nitride;acetylene hydrochlorination
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2024
·
IF 6.1
Ying Liu,Sen Zhang,Yupeng Yao,Leilei Fan,Jian Wang,Yanxia Wu,Lin Jing,Peide Han,Caili Zhang
The ideal mechanical performances of in-situ synthesized graphene/Ni composite have not been obtained due to the weak interfacial bonding. To realize the high strengthening efficiency of graphene, this paper proposed a Mo microalloying strategy. The influences of Mo concentration on the microstructures, interfacial bonding characteristics, and quasi-static tensile behavior of the composite were investigated. The results showed an appropriate Mo concentration (0.2 wt%) not only enabled a strong interfacial bonding but also reduced the stacking fault energy of the Ni matrix, generating the twinning and further altering the strength and plasticity. The yield and tensile strength of the composite were increased by 215.3 % and 20.3 %, respectively, but no significant reduction in plasticity was observed. The strengthening of the composite was ascribed to the effective load transfer, twinning, and dislocation strengthening, whereas the critical role of large-area graphene nanosheets and deformation twinning in suppressing the crack propagation ensured a high toughness.
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2024
·
IF 2.3
Niu Tong,Shi Zhengyang,Sun Jinchang,Zhang Qianwen
The modification of petroleum resin (PR) by catalytic hydrogenation is an upgrading technology for producing high-value-added hydrogenated petroleum resin (HPR) from of pyrolysis petroleum by-product. This research employed alumina supports with different pore size distributions to prepare supported Mo-Ni type catalysts and investigated their catalytic hydrogenation performance on C 9 petroleum resin. Catalysts prepared with bimodal pore alumina (BPA) supports effectively overcome the limitations of internal diffusion and increase the quantity of active sites, thus increasing the catalytic activity for hydrogenation. The experimental results demonstrated that MoNi/BPA achieved a hydrogenation degree of 99.94% for HC 9 PR, with the hydrogenated product having a Pt–Co colour of 2.37 Hazen. After 140 h of reaction, the hydrogenation degree of HC 9 PR remained at 96.51%, and the Pt–Co colour value was lower than 40 Hazen. This investigation confirms that solving the mass transfer issues of petroleum resin molecules in the pores of supported catalysts is key to designing efficient hydrogenation catalysts for petroleum resin. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
Radiation Effects and Defects in Solids
·
2024
·
IF 1.1
X.L. Ren,G. Yao,L.M. Luo,Y. Xu,A. Yabuuchi,Q. Xu
In the present study, we developed Mo- and Zr-added W-Y2O3 composites, and investigated their surface damage, including commercially available W induced by He and D as well as He and D mixture plasmas. Blistering was not observed in the D-plasma-irradiated W and W composites. The thickness of the damaged surface layer due to He plasma exposure of the W-Mo-Y2O3 composite was similar to that of W. However, the thickness of the damaged surface layer of the W-Y2O3 composite was half that of W. In addition, the thickness of the damaged surface layer of the W-Zr-Y2O3 composite was further improved by 5 times. Y2O3 nanoparticles, especially refined Zr-Y-O nanoparticles, act as He trap sites to suppress the formation and growth of He bubbles. Furthermore, the W-O-Y and W-O-Zr-Y nanoparticles increased the solubility of He and delayed He diffusion, hindering the formation of He bubbles.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Tang Minhao,Shen Ji,Wang Yiding,Zhao Yanfei,Gan Tao,Zheng Xusheng,Wang Dingsheng,Han Buxing,Liu Zhimin
The chemical recycling of polyester wastes is of great significance for sustainable development, which also provides an opportunity to access various oxygen-containing chemicals, but generally suffers from low efficiency or separation difficulty. Herein, we report anatase TiO 2 supported Ru and Mo dual-atom catalysts, which achieve transformation of various polyesters into corresponding diols in 100% selectivity via hydrolysis and subsequent hydrogenation in water under mild conditions (e.g., 160 °C, 4 MPa). Compelling evidence is provided for the coexistence of Ru single-atom and O-bridged Ru and Mo dual-atom sites within this kind of catalysts. It is verified that the Ru single-atom sites activate H 2 for hydrogenation of carboxylic acid derived from polyester hydrolysis, and the O-bridged Ru and Mo dual-atom sites suppress hydrodeoxygenation of the resultant alcohols due to a high reaction energy barrier. Notably, this kind of dual-atom catalysts can be regenerated with high activity and stability. This work presents an effective way to reconstruct polyester wastes into valuable diols, which may have promising application potential.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 1
·177
·
IF 4.6
Zhi Lu,Yifan Guo,Shilin Li,Jiaqi Ding,Yingzi Ren,Kun Tang,Jiefeng Wang,Chengxin Li,Zishuo Shi,Ziqi Sun,Hongbo Meng,Guangxin Wang
Water electrolysis is a promising path to the industrialization development of hydrogen energy. The exploitation of high-efficiency and inexpensive catalysts become important to the mass use of water decomposition. Ni-based nanomaterials have exhibited great potential for the catalysis of water splitting, which have attracted the attention of researchers around the world. Here, we prepared a novel Mo-doped NiFe-based layered double hydroxide (LDH) with a nanoarray microstructure on Ni foam. The doping amount of Mo can significantly change the microstructure of the electrocatalysis, which will further affect the oxygen evolution reaction (OER) performance of water splitting. This novel nanomaterial required only an overpotential of 227 mV for 10 mA cm−2and a Tafel slope of 54.8 mV/dec in 1 M KOH. Meanwhile, there was no Mo, and the NiFe-LDH needed 233 mV to attain to 10 mA cm−2. Compared to the NiFe-LDH without Mo, the NiFeMo-LDH nanosheet arrays exhibited enhanced activities with 17.1 mV/dec less Tafel in OER. The good performance of the electrocatalyst is ascribed to the special nanosheet arrays and the heterostructure of the Ni-Fe-Mo system. These features help to increase the active surface, enhancing the efficient charge transfer and the reactive activity in OER.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomaterials Science
·
2025
·
IF 5.7
Xinyu Wang,Qingbin He,Lining Wang,Chengzhilin Li,Wenyu Zhang,Zhonghou Rong,Qingqing Yin,Yingchun Zhao
Sepsis, an inflammatory disease caused by bacterial infection, has become a global public health crisis. Excessive reactive oxygen species (ROS) in sepsis patients act as the primary trigger for activating intracellular immune pathways, ultimately leading to multiple organ dysfunction syndrome. The overexpression of acidic metabolites and ROS, characteristic of the infected microenvironment, significantly impedes sepsis treatment. Cyclic GMP-AMP synthase (cGAS), a cytosolic DNA sensor, plays a key role in inflammatory diseases. The detrimental effects of STING in sepsis have been well documented. Here, we developed a pH-responsive nanotherapy platform (DMSNM@C-178/PAA) that combines ROS scavenging with cGAS-STING pathway inhibition for anti-inflammatory therapy. This nanoparticle is selectively released in the infected microenvironment, where reduced molybdenum-based polyoxometalates (Mo-POM) efficiently neutralize toxic ROS in vivo, while C-178 selectively inhibits the cGAS-STING pathway, thereby attenuating the inflammatory response and preventing organ deterioration. In vitro and in vivo studies demonstrate that DMSNM@C-178/PAA treats sepsis by eliminating excess ROS and modulating autoimmune dysfunction via the cGAS-STING pathway, providing a novel therapeutic strategy for sepsis management.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Haobin Song,Tong Li,Tingting He,Zhouhao Wang,Daliang Fang,Ye Wang,Xue Liang Li,Daohong Zhang,Junping Hu,Shaozhuan Huang
The intelligent design of catalytic materials with unique architectures has a significant impact on regulating the polysulfides (LiPSs) conversion and boosting the performance of Li − S batteries. Here, starting from 2D catalytic MoS 2 nanosheets and combined with the first-principle calculations, the covalent heterojunction and S vacancy are simultaneously developed in MoS 2 to regulate the electronic structure and improve the LiPSs conversion kinetics. The S vacancy and heterojunction (MoS 2-x -Co 9 S 8-y ) engineering can significantly improve the electrical conductivity of MoS 2 by incorporating shallow donor levels into the MoS 2 . Moreover, the incorporation of Co 9 S 8-y greatly improves the chemisorption ability of heterostructure towards LiPSs. The LiPSs are preferentially adsorbed at the catalytic Mo-S-Co heterojunction, where both Li + and e - are easy to access. The coupled fast Li + /e - transportation of MoS 2-x -Co 9 S 8-y enables direct and fast LiPSs “adsorption-conversion” at the catalytic Mo-S-Co heterojunction with enhanced bidirectional catalytic properties. Due to the ingenious co-engineering of S vacancy and heterointerface, the Li − S cell with MoS 2-x -Co 9 S 8-y /rGO interlayer delivers high sulfur utilization (1382.5 mAh/g at 0.1C), excellent rate capability (710.2 mAh/g at 3C), and long cycle life over 600 cycles (0.06 % capacity decay per cycle). This work demonstrates the great potential of anion deficiency and heterojunction co-construction for high-performance Li − S batteries.
✓ 已验证
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
He Lin,Li Menggang,Qiu Longyu,Geng Shuo,Liu Yequn,Tian Fenyang,Luo Mingchuan,Liu Hu,Yu Yongsheng,Yang Weiwei,Guo Shaojun
The precise structural integration of single-atom and high-entropy-alloy features for energy electrocatalysis is highly appealing for energy conversion, yet remains a grand challenge. Herein, we report a class of single-atom Mo-tailored PdPtNiCuZn high-entropy-alloy nanosheets with dilute Pt-Pt ensembles and intrinsic tensile strain (Mo 1 -PdPtNiCuZn) as efficient electrocatalysts for enhancing the methanol oxidation reaction catalysis. The as-made Mo 1 -PdPtNiCuZn delivers an extraordinary mass activity of 24.55 A mg Pt −1 and 11.62 A mg Pd+Pt −1 , along with impressive long-term durability. The planted oxophilic Mo single atoms as promoters modify the electronic structure of isolated Pt sites in the high-entropy-alloy host, suppressing the formation of CO adsorbates and steering the reaction towards the formate pathway. Meanwhile, Mo promoters and tensile strain synergistically optimize the adsorption behaviour of intermediates to achieve a more energetically favourable pathway and minimize the methanol oxidation reaction barrier. This work advances the design of atomically precise catalytic sites by creating a new paradigm of single atom-tailored high-entropy alloys, opening an encouraging pathway to the design of CO-tolerance electrocatalysts.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Shuang Cao,Zhao Song,Yu Bing,Xiaoyi Xu,Tingting Zhou,Tong Zhang
The development of a highly selective and trace-level gas sensing platform for detecting hydrogen sulfide (H2S) remains a formidable challenge. To solve this problem, Co–Mo multimetal oxide semiconductors are rationally tailored by employing metal organic frameworks (MOFs) as self-sacrificial templates. The MOF-derived Co3O4/β-CoMoO4 based gas sensors displays high sensitivity (Rg/Ra = 22) to 10 ppm of H2S and ultralow limit of detection (10 ppb H2S). The formation of p-p heterojunction and multivalence states of Mo play a crucial role in electron transfer and oxygen adsorption. A sensor array constructed from four Co3O4/β-CoMoO4 materials with different Co/Mo ratios demonstrates a superior selective discrimination of H2S from other VOCs and malodorous gases by principal component analysis (PCA). Besides, a H2S gas sensing and alarming platform was designed for monitoring the environment contaminated with H2S. This finding provides a feasible approach for the discovery of highly efficient gas sensors to monitor environmental H2S concentration.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Xiaoqin Sun,Xuejiao Feng,Yuan Dang,Sining Yun
Sulfite is deemed as a promising precursor to produce highly reactive species for contaminants remediation. Herein, the urchin-like Ni-Fe-Mo sulfide (NiFeMoS x ) was anchored in-situ on nickel foam as a cathode to activate CaSO 3 for efficient degradation of tetracycline (TC) under natural condition. The degradation efficiency reached 92.7% within 60 min, which was about 1.81 times higher than that of the electro-Fenton process based on NiFeMoS x . The beneficial performance came from the synergistic activation of CaSO 3 by simultaneous rapid redox cycles of Fe(II)/Fe(III) and Ni(II)/Ni(III) on the NiFeMoS x cathode. Specifically, the primary intermediates Fe(II)-HSO 3 - and Ni(II)-SO 3 2- triggered a series of radical chain reactions, accompanied the reduction of Ni(III)/Fe(III) by electrochemistry and electron donor of Mo(IV) and S 2- on the surface of the catalyst. The regeneration of the Fe(II)/Ni(II) was quickly realized and subsequently triggered the chain reactions, which would accelerate the formation rate of reactive species, such as SO 4 ∙ − , ·OH, O 2 ∙ − and 1 O 2 , of which 1 O 2 and O 2 •- played important roles on degradation TC. This work provides a promising application for the efficient removal of persistent organic pollutants by metal sulfide activated sulfite.
✓ 已验证
产品关联
DOI
高影响因子
AICHE JOURNAL
·
2025
·
IF 4
Hao Huang,Nadia N. Intan,Jialin Tan,Zidi Liu,Da Zhang,Xiaolan Cai,Min Zhuang,Shaoqu Xie
Strong metal-support interaction (SMSI) significantly influences the catalytic activity, selectivity, and stability through the geometric and electronic effects of a catalyst. We herein develop a stable Ru 0 −Mo δ+ catalyst for the hydrodeoxygenation (HDO) of fatty acids to alkanes (2.5 μmol g −1 cat h −1 ) at low to room temperatures, meanwhile demonstrating its general applicability to various complex fatty acids. Kinetic studies and reaction pathway analysis revealed that the Ru–Mo SMSI significantly reduced the reaction activation energy by altering the HDO pathways. Mechanistic studies indicate that electron transfer occurs between the active Ru nanoclusters and the Mo δ+ support, which enhances catalytic activity by promoting the adsorption of RCOO* at the Ru 0 −Mo δ+ interface. Our research establishes an efficient Ru–Mo catalyst for biomass upgrading at low temperatures and calls for reassessing the electronic effects in the M 0 -M δ+ interfacial catalysis model.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）