Article
Energy & Fuels
Fangjun Wang, Tianhang Tang, Ruitao Zhang, Zhihai Cheng, Jiang Wu, Ping He, Yongfeng Qi, Shuo Chen, Wenhao Li
Summary: Mercury pollution from coal-fired power plants is a serious threat to both the environment and human health. A novel cobalt sulfide modified graphite carbon nitride adsorbent was developed to improve the removal efficiency of elemental mercury. The adsorbent showed excellent performance and recyclability due to the addition of cobalt sulfide and its magnetic characteristics.
Review
Engineering, Environmental
Weiyu Zhu, Yanxue Yue, Huihui Wang, Bo Zhang, Rongbo Hou, Jingting Xiao, Xinshui Huang, Alhadi Ishag, Yubing Sun
Summary: As a typical two-dimensional metal-free material, graphitic carbon nitride (g-C3N4) exhibits excellent electronic properties, visible light absorption and fast interfacial charge transfer, making it a promising material in energy conversion/storage and environmental remediation. This review provides a detailed overview of recent advances in the functionalization and application of g-C3N4-based photocatalysts for energy conversion (CO2 reduction, N2 fixation, H2O2 production, and water splitting) and environmental remediation (gaseous pollutants, organics, metal ions, and water disinfection). The challenges and future perspectives of g-C3N4-based photocatalysts are also discussed. This review stimulates the exploration of new research directions in the energy and environmental applications of g-C3N4-based photocatalysts, contributing to the alleviation of energy crisis and promotion of sustainable development.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Juhua Luo, Ziyang Dai, Mengna Feng, Mingmin Gu, Yu Xie
Summary: This study provides an efficient strategy to fabricate nanocomposites with high stability and efficient charge separation. The nanocomposites exhibit excellent photocatalytic performance and magnetic separability under visible light.
Article
Chemistry, Analytical
Jaysiva Ganesamurthi, Ragurethinam Shanmugam, Shen-Ming Chen, Pitchaimani Veerakumar
Summary: In this study, a new electrode material Bi2S3/Zn-GCN was developed and demonstrated excellent electrochemical performance for NO sensing. The electrochemical analysis showed that the composite material has a very low detection limit and high sensitivity. The experimental results suggest that the sensor has potential applications in detecting NO in different samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Environmental Sciences
Sue Jiun Phang, Jin Mei Goh, Lling-Lling Tan, Wuen Pei Cathie Lee, Wee-Jun Ong, Siang-Piao Chai
Summary: A novel graphitic carbon nitride metal-free homojunction photocatalyst was synthesized via hydrothermal polymerization, showing excellent photocatalytic activity under low-powered excitation sources. The homojunction photocatalyst demonstrated significantly increased efficiency compared to pristine materials, attributed to improved separation and transfer of electron-hole pairs across the interface. Additionally, the photocatalyst displayed exceptional stability and durability after multiple reaction cycles.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
R. S. Santos, R. Suresh Babu, M. Devendiran, D. B. Haddad, A. L. F. de Barros
Summary: This study successfully synthesized two different transition metal oxides grafted on graphitic carbon nitride nanosheets, demonstrating excellent electrochemical performance in supercapacitors. The fabricated CoO/GCN-NS and CuO/GCN-NS asymmetric supercapacitors showed outstanding specific capacitance and cycling performance.
Article
Environmental Sciences
Jagannathan Mohanraj, Dhinasekaran Durgalakshmi, Rajendran Saravanan
Summary: The study focused on the preparation of graphitic carbon nitride for quick adsorption of water contaminants and sensing of pharmaceutical products, demonstrating excellent adsorption ability and sensing performance.
ENVIRONMENTAL POLLUTION
(2021)
Review
Chemistry, Inorganic & Nuclear
Jianlong Wang, Shizong Wang
Summary: This review systematically analyzes and summarizes the recent advances in graphitic carbon nitride (g-C3N4)-based composites, including preparation, characterization, modification, and environmental application. The focus is on the modification mechanisms and environmental applications. Concluding remarks and perspectives for further study are provided.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Engineering, Environmental
Chenmin Xu, Huan He, Zhe Xu, Chengdu Qi, Shiyin Li, Lili Ma, Pengxiang Qiu, Shaogui Yang
Summary: Photocatalysis using elemental boron nanoparticles as a bi-functional cocatalyst shows high solar energy utilization and improved degradation of pollutants. The nanoparticle converts long-wavelength light energy into heat, increasing reaction temperature and accelerating photocatalytic reactions, while also suppressing charge carrier recombination. This study not only highlights the advanced capabilities of elemental boron as a cocatalyst, but also offers an alternative strategy for efficient full-spectrum solar energy conversion.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Rakhee Saikia, Purna K. Boruah, Sahid Mostak Ahmed, Manash R. Das, Ashim J. Thakur, Utpal Bora
Summary: In this study, Cu(0) nanoparticles were immobilized on a template-free carbon-nitride oxide surface. These heterogeneous catalysts facilitated the Chan-Lam N-arylation of anilines, azoles, and indoles with phenylboronic acids, yielding synthetically important compounds with wide pharmaceutical applications. The achievements of this work include the reuse of the catalyst, the use of greener solvents, and the extension of the scope of the Chan-Lam cross-coupling reaction.
APPLIED CATALYSIS A-GENERAL
(2022)
Review
Chemistry, Physical
Asif Hayat, Abdullah G. Al-Sehemi, Karam S. El-Nasser, T. A. Taha, Ahmed A. Al-Ghamdi, Jawad Ali Shah Syed, Mohammed A. Amin, Tariq Ali, Tariq Bashir, Arkom Palamanit, Javid Khan, W. Nawawi
Summary: This article introduces graphitic carbon nitride (g-C3N4) as a material with potential to address energy and ecological issues, and proposes the use of heterojunction formation to improve its photocatalytic performance. It reviews recent g-C3N4 nanocomposites and their applications in solar energy adaptation and pollution control.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Chemical
Jiale Lee, Xin Yu Tan, Boon-Junn Ng, Xin Ying Kong, Siang-Piao Chai, Lling-Lling Tan
Summary: The photocatalytic performance of g-C3N4 was significantly improved by alkali and heat treatment, leading to efficient degradation of pharmaceutical wastewater. This provides a new approach for sustainable environmental remediation.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Environmental Sciences
Cristiane De Oliveira, Carmem G. Renda, Ailton J. Moreira, Ernesto C. Pereira, Gian P. G. Freschi, Roberto Bertholdo
Summary: In recent decades, the growth of world agricultural activity has led to an increased presence of emerging pollutants like atrazine in water ecosystems. This study investigated the use of a graphitic-porous-carbon-based material with magnetic domains for the removal of atrazine from aqueous solutions. The material showed high adsorption efficiency for atrazine and its adsorption mechanisms were studied in detail.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Huijun Yu, Hagai Cohen, Ronny Neumann
Summary: The study demonstrates the photoelectrochemical reduction of CO2 to CO and formic acid using Cu-CN on an FTO electrode. Under visible light illumination, the activity and efficiency of Cu-CN are significantly improved.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Environmental Sciences
Abbas Akbarzadeh, Yeganeh Khazani, Shokooh Sadat Khaloo, Masoumeh Ghalkhani
Summary: A new nanocomposite material was synthesized, which exhibited excellent photocatalytic degradation ability for dye compounds under visible light irradiation. The experiment results showed that this nanocomposite had a faster degradation rate constant compared to pure components and composite materials. Furthermore, it demonstrated stability and reusability, making it suitable for environmental remediation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Construction & Building Technology
Chaoen Li, Xiaodong Wen, Wei Cai, Jiayu Wu, JingJing Shao, Yikun Yang, Hang Yu, Dongjing Liu, Meng Wang
Summary: A novel hybrid phase-change material (PCM)-containing wallboard is proposed for indoor thermal comfort and energy saving. The wallboard, with a wide phase-change temperature range, shows promising energy-saving performance in various climate zones, especially in Shanghai with hot summers and cold winters.
ENERGY AND BUILDINGS
(2022)
Article
Engineering, Environmental
Dongjing Liu, Lingtao Yang, Jiang Wu, Bin Li
Summary: Sulfur vacancies in metal sulfides are crucial for mercury removal, and tuning the concentrations of sulfur vacancies can enhance their mercury adsorption ability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Yajing He, Shihong Zhang, Dongjing Liu, Xing Xie, Bin Li
Summary: The aim of this study is to investigate the influence of biomass particle size on the torrefaction characteristics. The results showed that biomass particle size did affect the product's evolution during biomass torrefaction. Comparatively, torrefaction temperature had a more significant effect on the composition of gas products than particle size and torrefaction time.
Article
Energy & Fuels
Bin Li, Jiazhen Tang, Xing Xie, Juntao Wei, Deliang Xu, Lei Shi, Kuan Ding, Shu Zhang, Xun Hu, Shihong Zhang, Dongjing Liu
Summary: Pyrolysis of wheat straw in Li2CO3-K2CO3 binary salt enhanced charring reactions and resulted in higher biochar yield. The structure of biochar showed different trends at different pyrolysis temperatures, with the C content increasing and the H and O contents decreasing at 450-550°C, and the decrease in H content and increase in O content and decrease in C content at 600-700°C. The enhanced activation effect of the molten salt at higher temperature resulted in the formation of more porous structures and enriching the biochar with O-containing groups.
Article
Energy & Fuels
Bin Li, Christian Fabrice Magoua Mbeugang, Xing Xie, Juntao Wei, Shihong Zhang, Lei Zhang, Adel A. El Samahy, Deliang Xu, Qian Wang, Shu Zhang, Dongjing Liu
Summary: This study investigates the effects of activated carbon, NiO active component, and calcined dolomite addition on H2-rich gas production from biomass pyrolysis-gasification. The results show that activated carbon greatly enhances H2 production due to its catalytic effect and self-gasification. Lower impregnation ratio of ZnCl2 or H3PO4 to biomass is preferable for H2 production. NiO mainly enters the micropores of activated carbon and may cover some active sites, reducing self-gasification but also showing catalytic effects on H2 production. The addition of calcined dolomite further increases H2 concentration and yield, and a synergistic effect is observed with NiO/activated carbon catalyst and calcined dolomite.
Article
Chemistry, Physical
Dongjing Liu, Lingtao Yang, Jiang Wu, Bin Li
Summary: xBi2S3/ZSM-5 compounds synthesized using a molten salt method can effectively capture elemental mercury in the temperature range of 60-260 degrees C, with the compound having a 20 wt% Bi2S3 loading value showing the best mercury capture performance.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Chaoen Li, Jiang Wu, Dongjing Liu
Summary: SnO2 doped cobalt pyrite (CoS2/SnO2) adsorbent is prepared and used for Hg0 capture in simulated flue gas. Bare CoS2 and SnO2 have lower Hg0 adsorption ability. SnO2 addition enhances the Hg0 capture ability of CoS2 due to the synergetic effect. NO and SO2 negatively affect Hg0 capture processes due to competitive adsorption or side reaction. Co2+, S22-, and Sn4+ ions serve as the major adsorption sites for elemental mercury capture over CoS2/SnO2. Chemisorbed oxygen may participate in the mercury removal process.
Article
Thermodynamics
Bin Li, Mengge Song, Xing Xie, Juntao Wei, Deliang Xu, Kuan Ding, Yong Huang, Shu Zhang, Xun Hu, Shihong Zhang, Dongjing Liu
Summary: The effect of oxygen equivalence ratio (ER) on oxidative fast pyrolysis of pine sawdust was studied. Oxygen mainly oxidized the biochar, providing the largest contribution to heat demand during biomass pyrolysis for autothermal operation. The biochar yield decreased from 21.03 to 9.5 wt% with an increase in ER from 0 to 11.15%. The addition of oxygen altered the formation and distribution of bio-oil, leading to the consumption of light compounds and promotion of anhydrosugar formation.
Review
Construction & Building Technology
Chaoen Li, Xiaodong Wen, Wei Cai, Hang Yu, Dongjing Liu
Summary: This paper summarizes the main characteristics of phase change materials (PCMs) in building envelopes and comprehensively discusses the design and shape stabilization methods of composite PCMs. The methods to address season adaptable problems and the test and heat transfer mechanisms are also overviewed. It was found that using biomass-derived carbon as supporting material is a low cost, environmentally friendly way to fabricate outstanding performance composite PCMs, and adopting multi-PCMs is an important way to solve season adaptable problem. Finally, crucial conclusions and future recommendations are provided to guide scholars on research for further improvements.
JOURNAL OF BUILDING ENGINEERING
(2023)
Review
Engineering, Chemical
Chaoen Li, Erlin Yue, Jiang Wu, Bin Li, Dongjing Liu
Summary: Mercury emission is a global concern due to the potential risks to human health and the environment. Copper-based compounds have gained attention for their low cost and decent removal efficiency in mercury emission control. This review discusses the progress and challenges of using copper-based composites in adsorptive and catalytic oxidation removal of elemental mercury. CuCl2 is an inexpensive and efficient catalyst for Hg-0 oxidation, but its high volatility and water solubility may cause halogen release and leaching risks. CuO is active in Hg-0 oxidation, but can be easily poisoned or suppressed by flue gas constituents. CuS-based composites show promise as sorbents due to their strong affinity for Hg-0 and tolerance to steam and sulfur dioxide. CuSe-based composites have similar mercury capture performance, but their complex synthesis and expensive precursors hinder industrial implementation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Energy & Fuels
Chaoen Li, Jing Yang, Jiang Wu, Bin Li, Dongjing Liu
Summary: Nowadays, controlling anthropogenic mercury emissions is important due to their severe threat to the environment and human health. Co-based compounds, such as Co3O4 and CoSx, have shown great potential in removing Hg0 from industrial flue gas. While Co3O4 can act as both a sorbent and a catalyst, CoSx-based composites outperform Co3O4-based compounds in terms of Hg0 removal due to their faster adsorption rates, larger mercury capacities, and superior resistance to flue gas constituents. However, improving the mercury capture performance of cobalt sulfides at elevated temperatures remains a challenge.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
Article
Green & Sustainable Science & Technology
Bin Li, Huimin Huang, Xing Xie, Juntao Wei, Shu Zhang, Xun Hu, Shihong Zhang, Dongjing Liu
Summary: The effects of AAEMs removal and KOH addition in char on formation and distribution of wheat straw pyrolysis products were studied. The removal of AAEMs increased the interaction between volatiles and char, while the addition of KOH significantly reduced bio-oil yield and increased non-condensable gas yield. It also promoted specific reactions and enhanced the cracking/decomposition of certain compounds.
Review
Energy & Fuels
Dongjing Liu, Chaoen Li, Tao Jia, Jiang Wu, Bin Li
Summary: Metal sulfides show great potential in capturing gaseous mercury, with graphene-based metal sulfides exhibiting good performance. However, further improvement is needed.
Article
Energy & Fuels
Lingtao Yang, Jiang Wu, Dongjing Liu
Summary: Metal sulfides are attracting attention for mercury emission control due to their high adsorption capacity and superior sulfur resistance. However, most metal sulfides have unsatisfactory performances due to their narrow working temperature range. A novel pyrite-type RuS2 adsorbent prepared using a salt melt approach exhibits excellent mercury adsorption performance in a wide temperature range.
JOURNAL OF THE ENERGY INSTITUTE
(2022)
Article
Energy & Fuels
Dongjing Liu, Lingtao Yang, Jiang Wu, Bin Li
Summary: Biochar adsorbents obtained from rice straw showed improved mercury adsorption ability after CuS deposition.
JOURNAL OF THE ENERGY INSTITUTE
(2022)
