APPLIED ENERGY
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2022
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IF 11.446
Boshu Jiang,Bachirou Guene Lougou,Hao Zhang,Boxi Geng,Lianxuan Wu,Yong Shuai
The solar-driven thermochemical CO 2 -to-CO conversion is an effective way to achieve the mission of carbon peaking and carbon neutrality. However, synthesizing porous reacting materials with excellent thermal stability, hardness and long-term cyclic stability, oxygen exchange capacity, and higher CO 2 -to-CO conversion are the most important challenges associated with the thermochemical CO 2 -splitting approach and technological upscaling to large-scale applications. This study presented the development of NiFe 2 O 4 oxygen carriers, the synthesis method of SiC and Si 3 N 4 supports, and solar-to-fuel processing of the newly prepared materials through CO 2 -splitting under a highly concentrated solar radiative heat flux. The newly synthesized NiFe 2 O 4 @SiC porous redox material resulted in higher solar energy absorption and CO 2 conversion capability with an instantaneous CO production of 410 μmol/g and direct CO 2 -to-CO conversion rate of 18.1 % at 1073–1273 K reaction temperature. The media composite of NiFe 2 O 4 @SiC exhibited high-temperature thermal changes, good thermochemical reaction stability, and a higher CO production rate through six redox cycles compared to NiFe 2 O 4 @Si 3 N 4 porous reacting material. The high oxidation potential and remarkably solar radiative heat flux absorption and thermochemical CO 2 -splitting capacities of the newly developed materials were demonstrated through experimental analysis. The synergistic effect of the oxygen carriers (NiFe 2 O 4 ) and substrate materials including SiC and Si 3 N 4 skeletons for CO 2 -splitting is highlighted. This study provided comprehensive and novel experimental insights that can be used as guidance for theoretical research and application in CO 2 conversion into high-value-added energy products.
研究领域:
材料科学
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可再生能源
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2024
·Vol. 14
·期 22
·6621-6640
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IF 4.4
Bin Guan,Junyan Chen,Zhongqi Zhuang,Zhan Gao,Zeren Ma,Xuehan Hu,Chenyu Zhu,Sikai Zhao,Kaiyou Shu,Hongtao Dang,Tiankui Zhu,Zhen Huang
As a promising future energy material, g-C3N4 as a CO2 photo-thermal-reduction catalyst can effectively convert CO2 to renewable fuel, but the low yield and low product selectivity significantly limit its further development and application. Herein, Ag and Bi2MoO6 were loaded separately or together on g-C3N4 catalysts by photo-deposition and solvothermal synthesis methods, wherein the conversion efficiency of the g-C3N4 catalyst co-loaded with 0.5% Ag and 10% Bi2MoO6 was the highest (CO yield = 50.77 μmol g−1 h−1, CO selectivity = 96.98%). Characterization shows that the co-loading of Ag and Bi2MoO6 reduces the band gap of g-C3N4, improves the light absorption performance, and promotes the photoelectron transfer and CO2 adsorption, which may be attributed to the LSPR of Ag and the Z-scheme heterojunction between g-C3N4 and Bi2MoO6. The results of in situ DRIFTS and DFT calculations are consistent with the above conclusion and show that Ag loading effectively reduces the energy barrier of each intermediate state. This thesis aims to provide data support and theoretical guidance for optimal design of g-C3N4 catalysts.
研究领域:
材料科学
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催化化学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Wenjiao Chang,Honghuo Wang,Tingting Wu,Shuting Zhang,Yifan Li,Junying Wang,Yongqiang Yang,Lei Wang
Photocatalytic CO 2 reduction reaction is regarded as a potential strategy to convert greenhouse gases into valuable chemicals. However, achieving photocatalysts with high efficiency and target product selectivity under visible light still faces great challenges. Herein, sub-2 nm RuO 2 @TiO 2 (RTO) nanorods with lattice matching interface are rationally designed and prepared via a hydrothermal reaction step-by-step. Due to the strong interaction of the lattice-matched interface with the Ru-O-Ti bond, new energy levels have emerged at the interface, leading to effective visible light absorbance. Moreover, the photo-generated electrons could be transferred to the RuO 2 efficiently via the lattice-matched interface. As a result, the RTO photocatalyst exhibits superior CO 2 -to-CH 4 conversion performance of 15.6 µmol g −1 with a selectivity of 87.9% under visible light irradiation. Density functional theory (DFT) calculation reveals that the energy barrier of CO* to CO is significantly higher than that of *CHO, resulting in the preferential production of CH 4 . This work provides an effective strategy for designing photocatalyst with promoted visible light absorption and improved product selectivity.
研究领域:
材料科学
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环境科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Materials and Technologies
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2022
·
IF 10.681
Boshu Jiang,Qiming Sun,Bachirou Guene Lougou,Hao Zhang,Xian Li,Zhibin Qu,Yong Shuai,Chi-Hwa Wang
The solar-driven thermochemical CO 2 conversion is an effective way to achieve the mission of carbon peaking and carbon neutrality . However, finding a material with excellent thermal stability, oxygen exchange capacity, and CO selectivity is one of the most important challenges in the thermochemical CO 2 conversion approach. This study investigated the solar thermochemical CO 2 -splitting characteristics through the synergistic thermal catalytic activity of CuO and NiFe 2 O 4 and the effect of SiC photothermal properties. The thermochemical redox cycling performance of CO 2 conversion through thermally activated catalysts was experimentally investigated via thermogravimetric combined quantum chemical calculations to provide comprehensive insights into the physicochemical principles underlying the thermochemical catalytic CO 2 -splitting. The X-ray diffraction, scanning electron microscopy, and energy spectrum detector technics were developed to gain detail on the crystal structure, surface morphology , and chemical composition changes in the reacting media. The newly synthesized composite material consisting of 25%CuO and 75%NiFe 2 O 4 (CNF-13) coated SiC porous skeleton resulted in higher CO 2 -splitting catalytic activity with an instantaneous CO production of 10.98mL ⋅ min ‐1 g CNF‐13 −1 and direct CO 2 -to-CO conversion rate of 33.9% at 1000–1200 K reaction temperature. The thermochemical CO 2 -splitting activity and redox stability of CNF-13@SiC was promoted by the photothermal properties of SiC support and the formation of Cu 2 O and Fe 3 O 4 new active material phases easing CO 2 reduction at low energy. This study provided experimental and theoretical findings that can be used as guidance for the fundamental research and application of CO 2 catalytic conversion into fuels through a solar thermochemical driven strategy.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
BIOMASS & BIOENERGY
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2025
·
IF 5.8
Hui Hou,Jingang Yao,Fuli Yang,Hongqing Ma,Guiying Xu
CO 2 and green hydrogen for aromatics production are effective methods to mitigate CO 2 emissions. Herein, Mg 3-X Cr X O 4 spinel oxide was constructed via co-precipitation of Mg and Cr, followed by physical mixing with HZSM-11 to form a metal oxide-zeolite (OX-ZEO) bifunctional catalyst. The catalytic performance of this system in CO 2 aromatization was systematically evaluated. Notably, the designed catalysts followed a methanol-mediated pathway, overcoming limitations of the Anderson-Schulze-Flory distribution in aromatic hydrocarbon products. At varying Mg/Cr molar ratios, MgCr 2 O 4 /HZSM-11 exhibited the highest single-pass CO 2 conversion of 19.2 % and the highest aromatic selectivity of 75.2 % (excluding CO). Additionally, the optimal reaction conditions were determined for MgCr 2 O 4 /HZSM-11, achieving an excellent aromatic selectivity of 82.4 % and a CO 2 conversion of 22.6 % at 320 °C, a gas hourly space velocity (GHSV) of 1200 mL·gat −1 ·h −1 and a pressure of 3.5 MPa. After 100 h, the MgCr 2 O 4 /HZSM-11 tandem catalyst maintained substantial catalytic activity, with aromatic selectivity and CO 2 conversion of 79.3 % and 21.1 %, respectively. This strategy offers valuable insights for designing OX-ZEO bifunctional catalysts.
研究领域:
催化化学
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of CO2 Utilization
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2018
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IF 5.503
Zhengfeng Huang,Peimei Dong,Yanzhao Zhang,Xiaoxiao Nie,Xiya Wang,Xiwen Zhang
A strategy of coupling a photocatalyst with a high CO 2 adsorption capacity material was proposed in order to integrate CO 2 capture and photoreduction processes into a single system. TiO 2 and ZIF-8 were selected for their high photoactivity and CO 2 adsorption capacity respectively. We employed a facile in-situ growth strategy to inlay ZIF-8 into the TiO 2 film grid. X-ray diffraction and scanning electron microscopy revealed that ZIF-8 was successfully prepared and inlaid into the TiO 2 film. X-ray photoelectron spectroscopy and photoluminescence spectra suggested that the TiO 2 and ZIF-8 were coupled by chemical bonding. The ZIF-8 decorated TiO 2 film exhibited excellent CO 2 capture capacity and showed remarkably enhanced yield for reducing CO 2 to CO and CH 4 when compared with pure TiO 2 film. The probable mechanism of the photoreduction process is also discussed.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Xiuquan Li,Ziqiang He,Congbo Li,Dugang Kang,Jie Chen,Youhong Wang,Fei Wang,Song Huang,Zhien Zhang
Aiming at the resource utilization of CO 2 and the value-added catalytic conversion of ethane, different reducibility oxide carriers were used to study. Through catalytic reaction experiments, catalyst characterization and kinetic analysis , the interaction between reducible carriers and active metals and their regulation on the catalytic reaction performance of ethane with CO 2 were revealed. Fe 1.5 Ni 0.5 /CeO 2 has the highest ethylene selectivity of 87% near 650 °C, and is a good catalyst for the CO 2 -assisted ethane oxidative dehydrogenation to ethylene reaction. The strong interaction between the reducible CeO 2 and ZrO 2 carriers and active metals makes the Fe–O–Ce and Fe–O–Zr covalent bonds on the Fe 1.5 Ni 0.5 /CeO 2 and Fe 1.5 Ni 0.5 /ZrO 2 catalysts stronger than Fe–O–Ti and Fe–O–Al covalent bonds on Fe 1.5 Ni 0.5 /TiO 2 and Fe 1.5 Ni 0.5 /γ-Al 2 O 3 catalysts. The lattice oxygen on the reducible catalyst is more readily involved in the reaction. The strong interaction between the active metal and the carrier results in the reduction of the FeO x species and the formation of new active sites, resulting in a high reactivity of the catalyst. The mutually promoted redox cycle between the active species Fe 3+/2+ -Ni 2+/0 and the reducible carrier variable metal Ce 4+/3+ species improves the catalytic performance for the reaction of ethane awith CO 2 .
研究领域:
化学工程
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催化科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Wentao Liu,Qiu Wang,Zhi Liu,Guixiang Ding
A series of treble NiAl-LDH/g-C 3 N 4 /carbon quantum dots (LDH/CN/CQDs) photocatalysts is successfully prepared for the photoreduction of CO 2 to CO via a facile hydrothermal pathway. In the 3D flower-like LDH/CN/CQDs, CQDs not only achieve the efficient inhibition of charge recombination but also act as the unhindered “electronic bridges” to synergistically construct a classical type-Ⅱ charge transfer configuration, which synchronously permits the effluence of photogenerated electrons from CN to LDH and holes from LDH to CN, and promotes ultraviolet–visible irradiation respondence. The sample of LDH/CN/CQDs-6 is the optimal one amongst the LDH/CN/CQDs with a larger special surface area (98.43 m 2 g −1 ) and an appropriate content of CQDs (66.9 wt%), exhibiting the highest CO evolution rate (5.2 μmol·g −1 ·h −1 ) under visible light irradiation without any sacrificial agent or photosensitizer in water. This is 26.8- and 20.9-fold higher than those of the pristine LDH , pure CN, and their binary counterparts, respectively, and also outperforms most reported LDH-based photocatalysts. As unhindered electron conduction bridges, the highly dispersed CQDs in the LDH/CN heterojunction significantly increase utilization efficiency of light energy and separation efficiency of photogenerated electron-hole pairs. This work provides a beneficial attempt to integrate CQDs with LDH/CN for the positive synergetic effect on both photoelectric properties and electron transfer to obtain highly enhanced photocatalytic activity of CO 2 into CO, and expected to be extended towards broader photocatalytic applications.
研究领域:
材料科学
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环境科学
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能源化学
✓ 已验证
DOI
高影响因子
Carbon Neutralization
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2024
·
IF 0
Hua-Wei Guo,Ya-Jun Wang,Huan Liu,Ya-Nan Zeng,Wei-Jie Wang,Tian-Ji Liu,Le-Le Kang,Rui Ji,Yi-Tong Wang,Jun-Guo Li,Zhen Fang
Metallurgical slag such as solid waste generated in the steel industry carries environmental pollution risks, but it is rich in nutrients required by microalgae. Metallurgical slag used for carbon capture and biomass energy conversion has multiple benefits: (i) reduction and harmless treatment of metallurgical solid waste, (ii) assisting in carbon neutrality by efficient carbon fixation, and (iii) production of biodiesel from CO 2 . In this study, AOD, BOF, BFS, HVS, and VTS slag were applied to culture Chlorella pyrenoidosa ( C. pyrenoidosa ) with the regulation of growth, carbon fixation, and lipid synthesis. An excellent fixed amount of CO 2 with 94.59 mg is obtained from C. pyrenoidosa biomass at BOF slag added (mass ratio of CO 2 captured/microalgae/slag with 1.99/1.00/10.53) since high Ca/Mg mass ratio of 419 (8.38 mg/L Ca and 0.02 mg/L Mg), no Cr and low concentration of Al (0.04 mg/L) contribute to regulating antioxidant enzyme activity (SOD and POD) to resist ROS and improving PEPC activity to reduce carbon flux toward lipid to promote biomass synthesis. Both metal concentrations from Ca (5.86 mg/L), Mg (0.05 mg/L), Al (0.42 mg/L), and Cr (0.006 mg/L) and suitable pH (10.53) in AOD leaching solution at solid/liquid ratio of 0.5 g/L change carbon flow toward efficient lipid synthesis (47.07 wt%) by continuously providing raw materials and energy by regulating ACC, ME, and PEPC activities. High value-added biodiesel with high concentrations of C16 and C18 methyl esters from lipid of C. pyrenoidosa is achieved, following other ecological and economic benefits including 197 mg CO 2 captured and 2198 mg AOD applied with harmless. In this study, C. pyrenoidosa is cultured with elements from metallurgical slag solid waste, which promotes C. pyrenoidosa efficient carbon fixation to assist in carbon neutrality, and provides guidance for CO 2 conversion to high-value-added products with low cost.
研究领域:
环境科学
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能源工程
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生物技术
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材料科学
✓ 已验证
DOI
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2023
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IF 6.1
Wei Rong,Meili Ding,Pan Ma,Suyu Kong,Jianfeng Yao
Accumulation of atmospheric CO 2 poses a serious threat to the global environment, but there is still a lack of effective CO 2 catalytic conversion under mild conditions. Herein, multifunctional ZnO/N-doped porous carbon materials, ZNPC-X, were fabricated by pyrolysis of available pine pollen with melamine and zinc chloride . The optimized ZNPC-600 produced at 600 °C can work as an efficient photothermal catalyst towards CO 2 cycloaddition conversion with a high catalytic yield of 99% under mild conditions (0.3 W/cm 2 , 1 bar). Moreover, ZNPC-600 shows excellent recyclability after ten cycles and desirable performance even under simulated flue gas and after moisture treatment. Absorption spectra and time-dependent infrared images unveil that the intrinsically broad light absorption and high photothermal conversion efficiency are the major reasons for the high activity of ZNPC-600. Besides, photogenerated electrons can be transferred to CO 2 and activate it, while photogenerated holes can be used as Lewis acid to facilitate the ring opening of epoxides. In addition, the hierarchical pore structure and the synergy between ZnO and pyridine N also play a role in the mass transfer and activation of epoxides and CO 2 , respectively. This work provides a low-cost and facile solution to obtain catalysts derived from biomass for promoting CO 2 conversion.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
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2023
·
IF 5.5
Huifang Feng,Yitong Sun,Qiaozhen Xu,Hong Liu
Developing efficient photocatalyst to promote the conversion of CO 2 into value-added chemicals remains challenging. Here, novel NH 2 -MIL-101(Fe)@Bi 2 MoO 6 S-scheme heterojunctions were fabricated via a solvothermal method, in which Bi 2 MoO 6 (BMO) nanoparticles uniformly growing on the NH 2 -MIL-101(Fe) (NM101) octahedrons with intimate contact interface. The resultant heterojunctions revealed significantly enhanced activity for CO 2 photoreduction. The optimal performance was achieved when the content of BMO was 10 wt%, and the formation rate of CO reached 67.0 μmol·g −1 ·h −1 under visible light illumination (with apparent quantum efficiency of 0.09 % at 450 nm), which was 3.2-fold of individual NM101. The boosting activity benefited from the formation of S-scheme heterojunction at the NM101 @BMO interfaces, which facilitated the separation of photoinduced electron-hole pairs with strong redox ability at the interface. This S-scheme charge transfer mechanism was further validated by the in-situ XPS and fluorescence probe molecular experiment. Besides, the intermediates and preliminary mechanism of photoreaction were unraveled based on in-situ DRIFTS analysis. This work provides some novel insights for designing efficient S-scheme photocatalysts for CO 2 photoreduction.
研究领域:
材料科学
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环境科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
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IF 8.6
Menglei Mao,Feixue Sun,Ruqing Chong,Rui Gao,Qiyong Liao,Zihui Meng,Xinlong Fan,Wenfang Liu
Ti 3 C 2 T x as a typical MXene material has a multilayer structure similar to accordion, whose interlayer spacing and specific surface area can be regulated by intercalation and modification. In this work, the effects of several kinds of cation-containing intercalators including NH 4 OH, KOH and NH 4 OH/KCl on the structure of Ti 3 C 2 T x and its application performance in enzymatic CO 2 conversion were investigated for the first time. The results show that Ti 3 C 2 T x intercalated with NH 4 OH/KCl had larger layer spacing (25.25 Å) and specific surface area (20.85 m 2 /g), and better enhancing effect. The initial reaction rate was 0.379 mM/h, which was separately 1.04, 1.42, 1.76 and 5.29 times that of Ti 3 C 2 T x /KOH, Ti 3 C 2 T x /NH 4 OH, Ti 3 C 2 T x and the blank system. Following that, Ti 3 C 2 T x /NH 4 OH/KCl was modified by polyethyleneimine (PEI) and dopamine (DA) and the concentration of modifier was optimized. PEI modified Ti 3 C 2 T x /NH 4 OH/KCl (PEI-Ti 3 C 2 T x ) was superior to PEI/DA modified that in the N content, CO 2 adsorption capacity and application performance. With the addition of 20 mg PEI-Ti 3 C 2 T x , the initial reaction rate was 0.658 mM/h, which was 1.74 and 9.2 times that of before modification and the blank system, respectively. PEI-Ti 3 C 2 T x also exhibited a good reusability and the initial reaction rate was 89.4% of the initial value after 10 cycles.
研究领域:
材料科学
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环境科学
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生物化学
✓ 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）