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Pan H, Li J, Wang Y, Xia Q, Qiu L, Zhou B. Solar-Driven Biomass Reforming for Hydrogen Generation: Principles, Advances, and Challenges. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2402651. [PMID: 38816938 PMCID: PMC11304308 DOI: 10.1002/advs.202402651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/23/2024] [Indexed: 06/01/2024]
Abstract
Hydrogen (H2) has emerged as a clean and versatile energy carrier to power a carbon-neutral economy for the post-fossil era. Hydrogen generation from low-cost and renewable biomass by virtually inexhaustible solar energy presents an innovative strategy to process organic solid waste, combat the energy crisis, and achieve carbon neutrality. Herein, the progress and breakthroughs in solar-powered H2 production from biomass are reviewed. The basic principles of solar-driven H2 generation from biomass are first introduced for a better understanding of the reaction mechanism. Next, the merits and shortcomings of various semiconductors and cocatalysts are summarized, and the strategies for addressing the related issues are also elaborated. Then, various bio-based feedstocks for solar-driven H2 production are reviewed with an emphasis on the effect of photocatalysts and catalytic systems on performance. Of note, the concurrent generation of value-added chemicals from biomass reforming is emphasized as well. Meanwhile, the emerging photo-thermal coupling strategy that shows a grand prospect for maximally utilizing the entire solar energy spectrum is also discussed. Further, the direct utilization of hydrogen from biomass as a green reductant for producing value-added chemicals via organic reactions is also highlighted. Finally, the challenges and perspectives of photoreforming biomass toward hydrogen are envisioned.
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Affiliation(s)
- Hu Pan
- College of BiologicalChemical Science and EngineeringJiaxing University899 Guangqiong RoadJiaxingZhejiang314001China
- Key Laboratory for Power Machinery and Engineering of Ministry of EducationResearch Center for Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai200240China
| | - Jinglin Li
- Key Laboratory for Power Machinery and Engineering of Ministry of EducationResearch Center for Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai200240China
| | - Yangang Wang
- College of BiologicalChemical Science and EngineeringJiaxing University899 Guangqiong RoadJiaxingZhejiang314001China
| | - Qineng Xia
- College of BiologicalChemical Science and EngineeringJiaxing University899 Guangqiong RoadJiaxingZhejiang314001China
| | - Liang Qiu
- Key Laboratory for Power Machinery and Engineering of Ministry of EducationResearch Center for Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai200240China
| | - Baowen Zhou
- Key Laboratory for Power Machinery and Engineering of Ministry of EducationResearch Center for Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai200240China
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Bhattacharjee S, Linley S, Reisner E. Solar reforming as an emerging technology for circular chemical industries. Nat Rev Chem 2024:10.1038/s41570-023-00567-x. [PMID: 38291132 DOI: 10.1038/s41570-023-00567-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/24/2023] [Indexed: 02/01/2024]
Abstract
The adverse environmental impacts of greenhouse gas emissions and persistent waste accumulation are driving the demand for sustainable approaches to clean-energy production and waste recycling. By coupling the thermodynamically favourable oxidation of waste-derived organic carbon streams with fuel-forming reduction reactions suitable for producing clean hydrogen or converting CO2 to fuels, solar reforming simultaneously valorizes waste and generates useful chemical products. With appropriate light harvesting, catalyst design, device configurations and waste pre-treatment strategies, a range of sustainable fuels and value-added chemicals can already be selectively produced from diverse waste feedstocks, including biomass and plastics, demonstrating the potential of solar-powered upcycling plants. This Review highlights solar reforming as an emerging technology that is currently transitioning from fundamental research towards practical application. We investigate the chemistry and compatibility of waste pre-treatment, introduce process classifications, explore the mechanisms of different solar reforming technologies, and suggest appropriate concepts, metrics and pathways for various deployment scenarios in a net-zero-carbon future.
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Affiliation(s)
| | - Stuart Linley
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.
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3
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Samal A, Das N. Mini-review on remediation of plastic pollution through photoreforming: progress, possibilities, and challenges. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:83138-83152. [PMID: 37351752 DOI: 10.1007/s11356-023-28253-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 06/10/2023] [Indexed: 06/24/2023]
Abstract
The increasing plastic pollution has raised significant concerns about the environment and the destruction of its precious resources. Making value-added products out of plastic waste is an effective way to reduce plastic pollution and use it as a valuable resource. Plastic reforming driven by sunlight offers a quick and low-energy way to produce hydrogen from waste. Photoreforming of plastic waste is an emerging technology that cannot only break down plastic polymer waste into value-added chemicals but also produce solar fuel cell quality H2. Technologies, such as pyrolysis, combustion, and advanced oxidation, are right now being studied for converting plastic pollution into energy. A thorough summary and comparison of different technologies have not yet been published. Open dumping and combustion are two main steps to deal with waste plastics, but these processes experience inefficiencies and cannot adequately address the challenges. In this mini-review, we aimed to provide a short overview of the recently reported conventional and novel plastic waste treatment methods. The current research on the photoreforming of plastics conducted by various groups and some advantages and disadvantages of this practice has been discussed thoroughly. Also, some notes were made on the prospective future scope present in this particular research area to achieve a carbon-free fuel system. The purpose of this review is to encourage the utilisation of plastic garbage as an alternative source of energy.
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Affiliation(s)
- Alaka Samal
- Department of Chemistry, Utkal University, Bhubaneswar, Odisha, 751 004, India
| | - Nigamananda Das
- Department of Chemistry, Utkal University, Bhubaneswar, Odisha, 751 004, India.
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Linley S, Reisner E. Floating Carbon Nitride Composites for Practical Solar Reforming of Pre-Treated Wastes to Hydrogen Gas. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2207314. [PMID: 37171802 PMCID: PMC10375181 DOI: 10.1002/advs.202207314] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/01/2023] [Indexed: 05/13/2023]
Abstract
Solar reforming (SR) is a promising green-energy technology that can use sunlight to mitigate biomass and plastic waste while producing hydrogen gas at ambient pressure and temperature. However, practical challenges, including photocatalyst lifetime, recyclability, and low production rates in turbid waste suspensions, limit SR's industrial potential. By immobilizing SR catalyst materials (carbon nitride/platinum; CNx |Pt and carbon nitride/nickel phosphide; CNx |Ni2 P) on hollow glass microspheres (HGM), which act as floating supports enabling practical composite recycling, such limitations can be overcome. Substrates derived from plastic and biomass, including poly(ethylene terephthalate) (PET) and cellulose, are reformed by floating SR composites, which are reused for up to ten consecutive cycles under realistic, vertical simulated solar irradiation (AM1.5G), reaching activities of 1333 ± 240 µmolH2 m-2 h-1 on pre-treated PET. Floating SR composites are also advantageous in realistic waste where turbidity prevents light absorption by non-floating catalyst powders, achieving 338.1 ± 1.1 µmolH2 m-2 h-1 using floating CNx versus non-detectable H2 production with non-floating CNx and a pre-treated PET bottle as substrate. Low Pt loadings (0.033 ± 0.0013% m/m) demonstrate consistent performance and recyclability, allowing efficient use of precious metals for SR hydrogen production from waste substrates at large areal scale (217 cm2 ), taking an important step toward practical SR implementation.
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Affiliation(s)
- Stuart Linley
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB21EW, UK
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB21EW, UK
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5
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Wu Y, Sakurai T, Adachi T, Wang Q. Alternatives to water oxidation in the photocatalytic water splitting reaction for solar hydrogen production. NANOSCALE 2023; 15:6521-6535. [PMID: 36938953 DOI: 10.1039/d3nr00260h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The photocatalytic water splitting process to produce H2 is an attractive approach to meet energy demands while achieving carbon emission reduction targets. However, none of the current photocatalytic devices meets the criteria for practical sustainable H2 production due to their insufficient efficiency and the resulting high H2 cost. Economic viability may be achieved by simultaneously producing more valuable products than O2 or integrating with reforming processes of real waste streams, such as plastic and food waste. Research over the past decade has begun to investigate the possibility of replacing water oxidation with more kinetically and thermodynamically facile oxidation reactions. We summarize how various alternative photo-oxidation reactions can be combined with proton reduction in photocatalysis to achieve chemical valorization with concurrent H2 production. By examining the current advantages and challenges of these oxidation reactions, we intend to demonstrate that these technologies would contribute to providing H2 energy, while also producing high-value chemicals for a sustainable chemical industry and eliminating waste.
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Affiliation(s)
- Yaqiang Wu
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Takuya Sakurai
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Takumi Adachi
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Qian Wang
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
- Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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Zhang WM, Feng KW, Hu RG, Guo YJ, Li Y. Visible-light-induced iron redox-catalyzed selective transformation of biomass into formic acid. Chem 2022. [DOI: 10.1016/j.chempr.2022.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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7
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Photocatalytic reforming of biomass-derived feedstock to hydrogen production. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04693-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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8
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Ma J, Liu K, Yang X, Jin D, Li Y, Jiao G, Zhou J, Sun R. Recent Advances and Challenges in Photoreforming of Biomass-Derived Feedstocks into Hydrogen, Biofuels, or Chemicals by Using Functional Carbon Nitride Photocatalysts. CHEMSUSCHEM 2021; 14:4903-4922. [PMID: 34636483 DOI: 10.1002/cssc.202101173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/06/2021] [Indexed: 06/13/2023]
Abstract
Photoreforming of biomass into hydrogen, biofuels, and chemicals is highly desired, yet this field of research is still in its infancy. Developing an efficient, novel, and environmentally friendly photocatalyst is key to achieving these goals. To date, the nonmetallic and eco-friendly material carbon nitride has found many uses in reactions such as water splitting, CO2 reduction, N2 fixation, and biorefinery, owing to its outstanding photocatalytic activity. However, a narrow light absorption range and fast charge recombination are often encountered in the pristine carbon nitride photocatalytic system, which resulted in unsatisfying photocatalytic activity. To improve the photocatalytic performance of pure carbon nitride in biomass reforming, modification is needed. In this Review, the design and preparation of functional carbon nitride, as well as its photocatalytic properties for the synthesis of hydrogen, biofuels, and chemicals through biomass reforming, are discussed alongside potential avenues for its future development.
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Affiliation(s)
- Jiliang Ma
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Jinan, 250353, P. R. China
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, Fuzhou, 350108, P. R. China
| | - Kangning Liu
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Xiaopan Yang
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Dongnv Jin
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Yancong Li
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Gaojie Jiao
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Jinghui Zhou
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Runcang Sun
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
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9
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Lam E, Reisner E. A TiO 2 -Co(terpyridine) 2 Photocatalyst for the Selective Oxidation of Cellulose to Formate Coupled to the Reduction of CO 2 to Syngas. Angew Chem Int Ed Engl 2021; 60:23306-23312. [PMID: 34464003 DOI: 10.1002/anie.202108492] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Indexed: 11/12/2022]
Abstract
Immobilization of a phosphonated cobalt bis(terpyridine) catalyst on TiO2 nanoparticles generates a photocatalyst that allows coupling aqueous CO2 -to-syngas (CO and H2 ) reduction to selective oxidation of biomass-derived oxygenates or cellulose to formate. An enzymatic saccharification pre-treatment process is employed that enables the use of insoluble cellulose as an electron-donating substrate under benign aqueous conditions suitable for photocatalytic CO2 conversion. The hybrid photocatalyst consists of solely earth-abundant components, and its heterogeneous nature allows for reuse and operation in aqueous solution for several days at 25 °C, reaching a cellulose-to-formate conversion yield of 17 %. Thus, the proof-of-concept for valorizing two waste streams (CO2 and biomass) simultaneously into value-added chemicals through solar-driven catalysis is demonstrated.
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Affiliation(s)
- Erwin Lam
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
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10
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A TiO
2
‐Co(terpyridine)
2
Photocatalyst for the Selective Oxidation of Cellulose to Formate Coupled to the Reduction of CO
2
to Syngas. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108492] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Rao C, Xie M, Liu S, Chen R, Su H, Zhou L, Pang Y, Lou H, Qiu X. Visible Light-Driven Reforming of Lignocellulose into H 2 by Intrinsic Monolayer Carbon Nitride. ACS APPLIED MATERIALS & INTERFACES 2021; 13:44243-44253. [PMID: 34499461 DOI: 10.1021/acsami.1c10842] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The photoreforming of lignocellulose is a novel method to produce clean and sustainable H2 energy. However, the catalytic systems usually show low activity under ultraviolet light; thus, this reaction is very limited at present. Visible light-responsive metal-free two-dimensional graphite-phased carbon nitride (g-C3N4) is a good candidate for photocatalytic hydrogen production, but its activity is hindered by a bulky architecture. Although reported layered g-C3N4 modified with active functional groups prepared by the chemical exfoliation enhances the photocatalytic activity, it lost the intrinsic structure and thus is not conducive to understand the structure-activity relationship. Herein, we report an intrinsic monolayer g-C3N4 (∼0.32 nm thickness) prepared by nitrogen-protected ball milling in water, which shows good performance of photoreforming lignocellulose to H2 driven by visible light. The exciton binding energy of g-C3N4 was estimated from the temperature-dependent photoluminescence spectra, which is a key factor for subsequent charge separation and energy transfer. It is found that monolayer g-C3N4 with smaller exciton binding energy increases the free exciton concentrations and promotes the separation efficiency of charge carriers, thereby effectively improving its performance of photocatalytic reforming of lignocellulose, even the virgin lignocellulose and waste lignocellulose. This result could lead to more active catalysts to photoreform the raw biomass, making it possible to provide clean energy directly from locally unused biomass.
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Affiliation(s)
- Cheng Rao
- School of Chemistry and Chemical Engineering, Guangdong Provincial Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou 510640, China
| | - Maoliang Xie
- School of Chemistry and Chemical Engineering, Guangdong Provincial Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou 510640, China
| | - Sicong Liu
- School of Chemistry and Chemical Engineering, Guangdong Provincial Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou 510640, China
| | - Runlin Chen
- School of Chemistry and Chemical Engineering, Guangdong Provincial Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou 510640, China
| | - Hang Su
- School of Chemistry and Chemical Engineering, Guangdong Provincial Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou 510640, China
| | - Lan Zhou
- School of Chemistry and Chemical Engineering, Guangdong Provincial Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou 510640, China
| | - Yuxia Pang
- School of Chemistry and Chemical Engineering, Guangdong Provincial Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou 510640, China
| | - Hongming Lou
- School of Chemistry and Chemical Engineering, Guangdong Provincial Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou 510640, China
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xueqing Qiu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
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12
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Pichler CM, Bhattacharjee S, Rahaman M, Uekert T, Reisner E. Conversion of Polyethylene Waste into Gaseous Hydrocarbons via Integrated Tandem Chemical-Photo/Electrocatalytic Processes. ACS Catal 2021; 11:9159-9167. [PMID: 34386271 PMCID: PMC8353629 DOI: 10.1021/acscatal.1c02133] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/22/2021] [Indexed: 12/16/2022]
Abstract
![]()
The chemical inertness
of polyethylene makes chemical recycling
challenging and motivates the development of new catalytic innovations
to mitigate polymer waste. Current chemical recycling methods yield
a complex mixture of liquid products, which is challenging to utilize
in subsequent processes. Here, we present an oxidative depolymerization
step utilizing diluted nitric acid to convert polyethylene into organic
acids (40% organic acid yield), which can be coupled to a photo- or
electrocatalytic decarboxylation reaction to produce hydrocarbons
(individual hydrocarbon yields of 3 and 20%, respectively) with H2 and CO2 as gaseous byproducts. The integrated
tandem process allows for the direct conversion of polyethylene into
gaseous hydrocarbon products with an overall hydrocarbon yield of
1.0% for the oxidative/photocatalytic route and 7.6% for the oxidative/electrolytic
route. The product selectivity is tunable with photocatalysis using
TiO2 or carbon nitride, yielding alkanes (ethane and propane),
whereas electrocatalysis on carbon electrodes produces alkenes (ethylene
and propylene). This two-step recycling process of plastics can use
sunlight or renewable electricity to convert polyethylene into valuable,
easily separable, gaseous platform chemicals.
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Affiliation(s)
- Christian M. Pichler
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Subhajit Bhattacharjee
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Motiar Rahaman
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Taylor Uekert
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
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Sustainable Hydrogen Production from Starch Aqueous Suspensions over a Cd0.7Zn0.3S-Based Photocatalyst. Catalysts 2021. [DOI: 10.3390/catal11070870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We explored the photoreforming of rice and corn starch with simultaneous hydrogen production over a Cd0.7Zn0.3S-based photocatalyst under visible light irradiation. The photocatalyst was characterized by UV–vis diffuse reflectance spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The influence of starch pretreatment conditions, such as hydrolysis temperature and alkaline concentration, on the reaction rate was studied. The maximum rate of H2 evolution was 730 μmol·h−1·g−1, with AQE = 1.8% at 450 nm, in the solution obtained after starch hydrolysis in 5 M NaOH at 70 °C. The composition of the aqueous phase of the suspension before and after the photocatalytic reaction was studied via high-performance liquid chromatography, and such products as glucose and sodium gluconate, acetate, formate, glycolate, and lactate were found after the photocatalytic reaction.
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15
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Guan L, Cheng G, Tan B, Jin S. Covalent triazine frameworks constructed via benzyl halide monomers showing high photocatalytic activity in biomass reforming. Chem Commun (Camb) 2021; 57:5147-5150. [PMID: 33899846 DOI: 10.1039/d1cc01102b] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Here we report the synthesis of covalent triazine frameworks (CTFs) using benzyl halide monomers which are more cost-effective and with higher availability than previous ones. The resulting CTFs were successfully applied for efficient photocatalytic reforming of glucose for the first time, with a high hydrogen evolution rate up to 330 μmol g-1 h-1 under pH = 12. This work presented a new way to synthesize CTFs and further exhibited their potential applications in photocatalytic biomass reforming.
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Affiliation(s)
- Lijiang Guan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Guang Cheng
- Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Bien Tan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Shangbin Jin
- Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China. and School of Chemical Engineering and Technology, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an, Shaanxi 710049, China
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16
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Savateev A, Markushyna Y, Schüßlbauer CM, Ullrich T, Guldi DM, Antonietti M. Unconventional Photocatalysis in Conductive Polymers: Reversible Modulation of PEDOT:PSS Conductivity by Long-Lived Poly(Heptazine Imide) Radicals. Angew Chem Int Ed Engl 2021; 60:7436-7443. [PMID: 33259655 PMCID: PMC8048452 DOI: 10.1002/anie.202014314] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/06/2020] [Indexed: 12/03/2022]
Abstract
In photocatalysis, small organic molecules are converted into desired products using light responsive materials, electromagnetic radiation, and electron mediators. Substitution of low molecular weight reagents with redox active functional materials may increase the utility of photocatalysis beyond organic synthesis and environmental applications. Guided by the general principles of photocatalysis, we design hybrid nanocomposites composed of n-type semiconducting potassium poly(heptazine imide) (K-PHI), and p-type conducting poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as the redox active substrate. Electrical conductivity of the hybrid nanocomposite, possessing optimal K-PHI content, is reversibly modulated combining a series of external stimuli ranging from visible light under inert conditions and to dark conditions under an O2 atmosphere. Using a conductive polymer as the redox active substrate allows study of the photocatalytic processes mediated by semiconducting photocatalysts through electrical conductivity measurements.
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Affiliation(s)
- Aleksandr Savateev
- Department of Colloid ChemistryMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| | - Yevheniia Markushyna
- Department of Colloid ChemistryMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| | - Christoph M. Schüßlbauer
- Department of Chemistry and PharmacyInterdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-NürnbergEgerlandstraße 391058ErlangenGermany
| | - Tobias Ullrich
- Department of Chemistry and PharmacyInterdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-NürnbergEgerlandstraße 391058ErlangenGermany
| | - Dirk M. Guldi
- Department of Chemistry and PharmacyInterdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-NürnbergEgerlandstraße 391058ErlangenGermany
| | - Markus Antonietti
- Department of Colloid ChemistryMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
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17
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Savateev A, Markushyna Y, Schüßlbauer CM, Ullrich T, Guldi DM, Antonietti M. Unkonventionelle Photokatalyse in leitfähigen Polymeren: Reversible Modulation der Leitfähigkeit von PEDOT:PSS durch langlebige Polyheptazinimid‐Radikale. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014314] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Aleksandr Savateev
- Abteilung der Kolloidchemie Max-Planck-Institut für Kolloid- und Grenzflächenforschung Am Mühlenberg 1 14476 Potsdam Deutschland
| | - Yevheniia Markushyna
- Abteilung der Kolloidchemie Max-Planck-Institut für Kolloid- und Grenzflächenforschung Am Mühlenberg 1 14476 Potsdam Deutschland
| | - Christoph M. Schüßlbauer
- Department Chemie und Pharmazie Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstraße 3 91058 Erlangen Deutschland
| | - Tobias Ullrich
- Department Chemie und Pharmazie Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstraße 3 91058 Erlangen Deutschland
| | - Dirk M. Guldi
- Department Chemie und Pharmazie Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstraße 3 91058 Erlangen Deutschland
| | - Markus Antonietti
- Abteilung der Kolloidchemie Max-Planck-Institut für Kolloid- und Grenzflächenforschung Am Mühlenberg 1 14476 Potsdam Deutschland
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