JOURNAL OF CATALYSIS
·
2021
·
IF 7.92
Jing Zhang,Weiqi Liao,Hao Zheng,Yunshang Zhang,Lebing Xia,Bo-Tao Teng,Ji-Qing Lu,Weixin Huang,Zhenhua Zhang
Pd supported on different anatase TiO 2 nanocrystals predominantly exposing either {1 0 0}, {1 0 1}, or {0 0 1} facets were tested for CO 2 hydrogenation into formate. Remarkable morphology-dependent catalysis was observed. Compared to 2%Pd/TiO 2 {1 0 1} and 2%Pd/TiO 2 {0 0 1} catalysts, 2%Pd/TiO 2 {1 0 0} is highly active and stable, affording an unprecedented turnover frequency of ca. 1369 h −1 and keeping stable after 6 cycles at 313 K. This can be associated with, on the one hand, higher density of moderate basic site and relatively more Pd(0) species over 2%Pd/TiO 2 {1 0 0} contribute to the activations of CO 2 and H 2 , respectively, favorable for the activity; On the other hand, higher oxygen vacancy concentrations in the TiO 2 {1 0 0} promote the Pd-TiO 2 interactions and result in the formation and stability of flat Pd particles over 2%Pd/TiO 2 {1 0 0}, beneficial to the stability. These results highlight the importance of oxide morphology in formate formation and open up possibilities of oxide morphology engineering for developing efficient Pd-based catalysts for CO 2 hydrogenation.
✓ 已验证
产品关联
DOI
高影响因子
Fundamental Research
·
2021
·
IF 0
Yannan Zhou,Pengfei Yan,Suoying Zhang,Yunxiao Zhang,Hongwei Chang,Xiaoli Zheng,Jingyun Jiang,Qun Xu
Combining the physical advantages of two-dimensional (2D) inorganic nanosheets and the modular design and programmed structure of metal-organic frameworks (MOFs), 2D MOFs remain at the forefront of functional material research. Despite tremendous efforts, precise control in the synthesis of 2D nonlayered MOFs with predesigned topology for desired applications remains challenging. Success in the bottom-up synthesis of 2D nonlayered MOFs via ligand exchange motivated us to incorporate partial BTC (BTC = 1,3,5-benzenetricarboxylate) ligand dissociation and CO 2 capped coordination into the top-down treatment of bulk Cu-BTC MOF, leading to successful conversion of a 3D nonlayered network to a 2D Cu-based topological structure. Notably, a supercritical CO 2 -containing solvent mixture is employed to provide the desired defect and coordination engineering. Thus, our work introduces a new top-down concept based on modulated synthesis to fabricate high-quality 2D nonlayered MOFs for the first time.
✓ 已验证
产品关联
DOI
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 45
·16711-16719
·
IF 4.39
Ying Jiang,Cunxin Mei,Zhijie Zhang,Zhongliang Dong
Perovskite CsPbBr3 nanocrystals (NCs) have emerged as promising candidates for the photocatalytic reduction of CO2. However, the CO2 conversion efficiency of pristine CsPbBr3 is still unsatisfactory, mainly due to severe radiative recombination, poor stability and low CO2 capturing ability. Coincidentally, nanoporous carbon powder (NCP) has received tremendous attention for environmental remediation and renewable energy production. Herein, by immobilizing CsPbBr3 NCs into the pores of NCP, a CsPbBr3/NCP hybrid has been successfully constructed for the first time, which combined the advantages of CsPbBr3 NCs and NCP. In comparison with pristine CsPbBr3, the resultant hybrid photocatalyst exhibited much superior photocatalytic performance in CO2 reduction, which could be attributed to the enhanced electron extraction and transfer between CsPbBr3 NCs and NCP, higher CO2 capturing ability and more active sites for CO2 activation. Furthermore, the nanohybrid displayed remarkable reusability in photocatalytic CO2 reduction. This study is anticipated to provide a new pathway for the design and fabrication of high-performance photocatalysts based on perovskites for solar-energy-conversion applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Shumin Hong,Ting Li,Min Xiao,Teerawat Sema,Hongxia Gao,Zhiwu Liang
The concept of phase change absorbents has been widely studied as a novel and low-energy consumption option for CO 2 capture. This work screened diethylene glycol dimethyl ether (DGM) from 17 physical solvent species as a better phase change accelerator for absorbents of 2-(methylamino)ethanol (MAE)-physical solvent-H 2 O. Then, the optimized mass ratio of 30:49:21 for MAE-DGM-H 2 O solution was investigated with phase change behaviors, CO 2 absorption–desorption performance, cyclic capacity, and energy consumption. The experimental results showed that the cyclic CO 2 capacity reached 1.32 mol/L and the CO 2 -rich phase made up only 50.4 % of the total volume for the 30 wt%MAE-49 wt%DGM-21 wt%H 2 O, as well as its regenerative energy consumption was 40 % lower than that of 30 wt% monoethanolamine (MEA) solution. Also, the viscosity and surface tension gap of the CO 2 -rich phase and CO 2 -lean phase for the optimized absorbent were studied. It was observed that those gaps increase with the increasing mass ratio of DGM. In addition, the possible phase change mechanism was proposed by using the dipole moment values of components calculated by Gaussian (B3LYP/6-31G) coupled with 13 C NMR spectra.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2017
·
IF 2.843
Junjie Zhu,Linbo Wu,Zhiyang Bu,Suyun Jie,Bo-Geng Li
Porous cross-linked polymers containing pendant triazole groups were synthesized from glycidyl methacrylate (GMA) in the presence of divinylbenzene via high internal phase emulsion (HIPE) templating method followed by functionalization with sodium 3-amino-1,2,4-triazole (ATANa). They were characterized with FTIR, SEM, BET, and mercury intrusion and assessed as CO2 adsorbents. With interconnected hierarchical porous structure and abundant triazole groups which absorbed CO2 chemically in 1:1 stoichiometry, the adsorbents exhibited high CO2 adsorption capacity (3.6 mmol g–1, at 25 °C and 1 atm) and rate, and good CO2/N2 selectivity (∼30). The adsorbents also displayed easy CO2 desorption with medium desorption heat (58 kJ/mol CO2), acceptable moisture endurance, and excellent recyclability. The results suggest that these functionalized porous polymers are potential adsorbents for CO2 capture.
✓ 已验证
产品关联
DOI
高影响因子
ACS Nanoscience Au
·
2026
·
IF 7.5
Guangtao Wang,Simin Li,Chao Yu,Yang Zhou,Wenlei Zhu,Bo Shen
Abstract Facet engineering of Cu-based nanocatalysts is a promising strategy for regulating the selectivity of CO2 and CO electroreduction because surface atomic arrangements strongly influence intermediate adsorption and reaction pathways. Compared with low-index facets, high-index facets contain abundant steps, kinks, and low-coordinated atoms, providing diverse active ensembles that can facilitate CO adsorption and subsequent C–C coupling. However, the catalytic roles of high-index-faceted Cu nanocatalysts remain largely unexplored. Herein, tetrahexahedral (THH) and hexoctahedral (HOH) high-index-faceted Cu nanoparticles were integrated with a porous Ag foam to construct Cu/Ag tandem catalysts for CO2 electroreduction. The C2+ selectivity follows the order HOH Cu/Ag > THH Cu/Ag > non-facet-controlled Cu/Ag, with HOH Cu/Ag achieving the highest ethylene Faradaic efficiency of 60.37%. In situ spectroscopic measurements using HOH Cu/Ag as a representative high-index-faceted catalyst indicate the formation of abundant adsorbed CO and possible CO-derived coupling intermediates within the potential range associated with pronounced ethylene production. Stability measurements further show that the morphology and catalytic selectivity are largely retained under moderate operating conditions, whereas more negative potentials induce surface roughening and gradual performance decay. This work provides a platform for investigating morphology-dependent selectivity in high-index-faceted Cu catalysts during CO2 electroreduction.
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2026
·Vol. 21
·期 17
·e70895
·
IF 3.2
Zhe Wang,Tang Tang,Jianpei Feng,Haihang Tong,Chun Hong Mak,Adel Zrelli,Alvaro Muñoz-Castro,Ji-Jung Kai,Carol Sze Ki Lin,Patrick H.-L. Sit,Hsien-Yi Hsu
Metal halide perovskites have exhibited considerable potential for solar-driven photocatalytic CO 2 reduction, yet their practical application is largely hindered by lead toxicity and severe charge recombination. In this work, we report the synthesis and screening of lead-free halide double perovskite Cs 2 AgBiX 6 (CABX, X = Cl, Br, I) nanocrystals via an antisolvent technique, followed by the construction of Cs 2 AgBiX 6 @WS 2 (CABBWS) composites with varying WS 2 contents (25, 50, 75 mol%). Structural and interfacial characterizations confirm the intimate contact between CABB particles and WS 2 nanosheets, while photophysical and photoelectrochemical (PEC) analyses demonstrate the optimal CABBWS50 with superior charge separation properties. The CABB-WS 2 intimate interface enhances charge transport by reducing activation energy, as evidenced by temperature-dependent TRPL measurements. The optimal CABBWS50 achieves a CO evolution rate of 13.65 µmol g − 1 h − 1 under visible-light irradiation ( λ > 420 nm), approximately 3.7 times higher than pristine CABB. This work provides comprehensive insights into the design of high-performance lead-free perovskite photocatalysts via rational halogen engineering and interfacial regulation, offering a promising strategy for solar fuel production toward carbon neutrality.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Fengting Yao,Zhixu Yun,Ziheng Li,Xuehua Ruan,Yan Dai,Xiaoming Yan,Xiaobin Jiang,Wenji Zheng,Gaohong He
Abstract Metal-organic framework (MOF)-based mixed-matrix membranes (MMMs) are promising for CO2 separation but remain limited by poor filler–polymer compatibility and compromised molecular sieving at high filler loadings. Herein, we developed a hydrogen-bond-mediated molecular interfacial engineering strategy by constructing complementary donor–acceptor hydrogen-bond networks between NH2-ZIF-8 and a carboxylated polyimide (COOH-PI), enabling the synergistic regulation of interfacial compatibility and the MOF pore microenvironment. The hydrogen-bonding network strengthened interfacial adhesion, suppressed nonselective defects, enhanced CO2 affinity, and optimized the ultramicroporous structure, while amination narrowed the MOF pore aperture to improve molecular sieving. The MMM containing 25 wt.% NH2-ZIF-8 with 15% amination exhibited excellent interfacial integrity and long-term operational stability, while its CO2/CH4 and CO2/N2 separation performances lie above both the 2008 Robeson upper bound and the revised 2019 upper bound reported by Neil B. McKeown et al. This strategy provides a general approach for designing high-performance CO2 separation MMMs.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Yi Liu,Shuangjiang Li,Manoj Pudukudy,Li Lin,Huigui Yang,Mengrui Li,Shaoyun Shan,Tianding Hu,Yunfei Zhi
Constructing green and efficient porous material platforms for carbon dioxide (CO 2 ) adsorption and chemical conversion can effectively solve a series of environmental problems caused by the greenhouse effect. Herein, four melamine-based polymer networks PANs (PAN-P, PAN-PY, PAN-PZ, and PAN-IM) with abundant N sites and hydrogen bond donor (HBD) groups were synthesized by simple polymerization. The chemical structure of PANs was determined by various characterizations, and then the CO 2 uptake of PANs and their catalytic activity for the cycloaddition of CO 2 with epoxides were investigated. Among them, PAN-P has the largest CO 2 adsorption capacity, reaching values of 73.5 cm 3 /g at 273 K. Meanwhile, PAN-IM exhibits the best catalytic activity with 93 % yield and 99 % selectivity under metal-, halogen-, solvent-, and cocatalyst-free conditions (120 ◦C, 1.0 MPa CO 2 , 8 h), which mainly attribute to the multi-site synergistic activation of the imidazole heterocycle. In addition, PAN-IM also has satisfactory activity to various epoxides and exhibited good recyclability. Density functional theory (DFT) and FT-IR analysis were used to further reveal the interaction of PANs towards CO 2 and epoxides. Finally, a possible mechanism was suggested, including activation of CO 2 and epoxide, ring-opening of epoxide, insertion of CO 2 and ring-closing to form cyclic carbonate. The research in this paper will provide a reference for the development of a green and efficient CO 2 adsorption conversion platform.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Tingman Zhao,Bo Feng,Jiada Du,Shengdao Shan,Yun Shi
Low-temperature NH 3 -SCR of NO x technology was recognized as a promising way to control NO x emissions from industrial kilns at low temperatures. Except for SO 2 and H 2 O, lots of CO 2 exist in the flue gas of industrial kilns. However, there are few researches on the effects of CO 2 on the low-temperature NH 3 -SCR activity. To investigate the effects of CO 2 on the low-temperature NH 3 -SCR performance and mechanism of CeO x -biochar catalyst, a series of experiments employed. The results showed that the presence of CO 2 had an obvious inhibitory effect on the NH 3 -SCR performance of CeO x -biochar 0.6 at 150 °C. There was competitive adsorption between CO 2 and NO on the surface of CeO x -biochar 0.6 . CO 2 was mainly adsorbed on CeO 2 , which hindered the oxidation of NO and the adsorption of NO x on the catalyst surface. Meanwhile, although the presence of CO 2 could improve NH 3 adsorption capacity of CeO x -biochar 0.6 due to the formation of NH 4 HCO 3 and (NH 4 ) 2 CO 3 , the existence of carbonates and bicarbonates blocked the formation of active intermediates NH 4 NO 2 and NH 2 NO for NH 3 -SCR reaction. As a result, the NO x conversion of CeO x -biochar 0.6 was dropped from 96.9% to 40.8% at 200 °C. In view of the bicarbonate and carbonate species was unstable at high temperatures, the inhibitory effect of CO 2 on NH 3 -SCR reaction was gradually weakened with the increase of reaction temperature. The NH 3 -SCR activity of CeO x -biochar 0.6 was seldom affected by CO 2 at 300 °C. Finally, a CO 2 poisoning mechanism for NO x removal by NH 3 -SCR at low temperature was proposed.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Sharafat Ali,Haider Ali,Syedul Hasnain Bakhtiar,Sajjad Ali,Muhammad Zahid,Ahmed Ismail,Pir Muhammad Ismail,Amir Zada,Imran Khan,Huahai Shen,Rizwan Ullah,Habib Khan,Mohamed Bououdina,Xiaoqiang Wu,Fazal Raziq,Liang Qiao
The construction of extremely dispersed redox-heterojunctions is a critical step toward improving of photocatalytic activity. Nonetheless, electron transfer faces momentous hurdles at the interfaces of these redox-heterojunction, mainly as a result of the considerable gap and potential-barrier between them. To address this obstacle, a bifunctional phosphate was deliberately introduced as an electron-bridge into the Cu 2 O/CeO 2 redox-heterojunction system, aiming to necessitate a potential-barrier, establish a photoelectron transport route to improve the surface catalysis, and serve as a catalyst stabilizer , leading to improved dispersion of Cu 2 O on the CeO 2 surface. The resultant intricately dispersed and optimized redox-heterojunction showcased an unparalleled advancement in apparent quantum efficiency (AQE), attaining an approximate value of 1.41 % at 420 nm during the photocatalytic CO 2 reduction. The experimental findings established a conspicuous association between the substantial increase in AQE and the diminished interfacial migration resistance, heightened dispersion, and abundance of more active-sites, all accredited to phosphate-modulation in the redox-heterojunction. The work emphasizes the significant importance of phosphate in bridging the conduction and valence bands of semiconductors, leading to enhanced photocarrier separation efficiency and improved molecular dispersion.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2023
·
IF 16.5
Hangjie Li,Yuehua Xiao,Jiale Xiao,Kai Fan,Bingkuan Li,Xiaolong Li,Liang Wang,Feng-Shou Xiao
Supported Cu catalysts are widely studied for the hydrogenation of CO 2 to dimethyl ether (DME). However, they suffer from insufficient durability and DME selectivity. Herein, we overcome these issues by modulating the gallium species and hydrophobic methyl groups to obtain a silica-supported copper catalyst , achieving a Cu/Ga-SiO 2 -Me catalyst with significantly improved DME selectivity and catalyst durability. Characterizations of the catalysts showed that the gallium species electronically modulated the Cu nanoparticles , resulting in abundant Cu δ + species in the catalyst, which minimized the reverse water-gas shift reaction and thus reduced CO selectivity. In addition, the methyl groups contributed to the rapid removal of water from the catalyst surface, which hindered Cu sintering and accelerated catalysis. Consequently, the Cu/Ga-SiO 2 -20Me exhibited a CO 2 conversion of 9.7%, selectivities of DME and methanol of 59.3% and 28.4%, and CO selectivity of only 11.3%. The strategy used in this study may provide rational guidance for improving current industrial catalysts.
✓ 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）