SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Huihui Song,Siyang Liu,Zhongqiao Sun,Yide Han,Junli Xu,Yan Xu,Junbiao Wu,Hao Meng,Xinxin Xu,Ting Sun,Xia Zhang
Construction of Z-scheme heterojunctions has been recognized as one of the most efficient strategies to significantly improve the charge-separation efficiency and achieve highly efficient solar energy conversion in photochemical reactions. Herein, a novel direct Z-scheme catalyst of NiCoP/ZIS was rational designed and prepared by dispersing ternary metal phosphide NiCoP in ZnIn 2 S 4 (ZIS) nanoflowers under solvothermal method. The compact heterojunction structural characteristic of NiCoP/ZIS afford the composite prominent enhanced photocatalytic hydrogen (H 2 ) production performance. The relative quantities of Ni and Co in NiCoP/ZIS composite can significantly influence the photocatalytic activities of the material, and the 37.5% Ni 0.7 Co 0.3 P/ZIS composite with a Ni/Co mole ratio of 0.7: 0.3 had the best hydrogen production efficiency with a hydrogen evolution rate of 3.84 mmol g −1 h −1 , which is approximately 8 times higher than that of single ZIS. The apparent quantum efficiency (AQE) for 37.5% Ni 0.7 Co 0.3 P/ZIS is about 5.14% under the incident monochromatic light of 405 nm. The subsequent electrochemical analyses proved the significant roles of the direct Z-scheme heterojunction in accumulating the electrons at the conduction bands of ZIS with more negative potential, which contributed to the stronger reduction activity in the promoted hydrogen generation for Ni 0.7 Co 0.3 P/ZIS. This work not only reported a a novel direct Z-scheme catalyst of NiCoP/ZIS heterostructure with enhanced photocatalytic hydrogen generation performance, but also provided a promising approach to rational design and construct efficient visible-light-driven photocatalysts for solar energy utilization.
研究领域:
材料科学
·
能源化学
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产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2024
·
IF 7.7
Huixiang Yan,Wei Li,Huixing Yang,Yongzhuo Yu,Chaoyu Lv,Linlin Hou,Wenxu Zhang,Di Lin,Shichao Jiao
A novel ternary photocatalyst Ni 3 S 4 @ZIS@C 3 N 5 with type II and Z-type heterojunctions was synthesized for the first time by hydrothermal and electrostatic self-assembly methods, effectively avoiding the thermal decomposition of C 3 N 5 during the synthesis of the complex. The best ternary catalyst Ni 3 S 4 @ZIS@C 3 N 5 is capable of achieving an optimal hydrogen evolution rate of 9750 mmol g −1 h −1 , which is approximately 10.89 times as high as that of C 3 N 5 , indicating that the complex effectively enhanced the photocatalytic properties of the monomer . The coexistence of two types of heterojunctions in the complex effectively enhances photocatalytic performance, in which the monomer ZIS constructs type II scheme with Ni 3 S 4 and Z-type scheme with C 3 N 5 , respectively. The two heterojunctions complement each other and jointly promote the rapid electron transfer from Ni 3 S 4 and C 3 N 5 to the ZIS surface. In conclusion, the cooperation of the two heterojunctions efficiently facilitates the migration of photogenerated carriers, thus enhancing the photocatalytic hydrogen generation performance of Ni 3 S 4 @ZIS@C 3 N 5 .
研究领域:
材料科学
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化学工程
·
能源科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Boyi Yan,Zhongqiao Sun,Yide Han,Hao Meng,Xia Zhang
The construction of a tightly contacted heterojunction consisting of multi-components is proven to be one of the effective strategies to promote the photogenerated charges separation and to develop high-efficient photocatalysts in hydrogen evolution . Herein, a ternary hollow heterostructure of ZnS/ZIS/In 2 S 3 has been fabricated by using a binary MOF@MOF (ZIF-8@MIL-68(In)) as the precursor, and an in-situ sulfurization of ZIF-8@MIL-68(In) is controlled to optimize the photocatalytic performances. The resulting samples are signed as Z@M- t , where the t is pointed to the sulfurization time being varied from 4 h to 48 h. It’s shown that the hierarchical and hollow architecture is formed for Z@M- t , and with the reinforced light harvest ability in both UV and visible light regions. In the subsequent visible-light-induced photocatalytic hydrogen generation, the optimized Z@M-24 manifests significantly improved hydrogen evolution rate of 607.34 μmol g -1 h −1 , which values are evidently higher than that by the single MOF and binary ZIF-8@MIL-68(In) heterostructure. The electrochemical analyses and the electron paramagnetic resonance (EPR) spectrum were analyzed to clarify the charge transfer routes and the enhanced photocatalytic mechanism, in which the contribution of each metal sulfide is also discussed. Finally, the good photocatalytic stability and reusability of Z@M-24 heterostructure are also represented, which define the structure superior brought by the effective heterojunction based on the in-situ sulfurization strategy of binary ZIF-8@MIL-68(In), and determine their prospect applications in the efficient H 2 production under visible light irradiation.
研究领域:
材料科学
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化学
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光催化
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Jianmin Li,Changyan Guo,Yanan Niu,Xianglei Cao,Jiang Li,Jide Wang
The photocatalytic oxidation of benzyl alcohol and the simultaneous evolution of hydrogen from water are efficient dual-optimal routes. It is important to develop composite catalysts that combine redox properties and facilitate electron–hole separation and transport. Herein, the bimetallic-doped Mo-ZIS@Ti photocatalyst was designed and synthesized, and the selective oxidation of benzyl alcohol and hydrogen evolution by water splitting was realized at the same time. Under visible light irradiation, benzyl alcohol was completely converted with more than 99% selectivity for benzaldehyde, and the H2 production rate was 5.6 times higher than the initial ZIS. The exceptional catalytic performance was ascribed to utilizing Ti-MIL-125 as a precursor, wherein slowly releasing-doped Ti formed robust Ti–S bonds that quickly transfer electrons and reduce sites. Meanwhile, doping Mo effectively captures photogenerated holes and acts as active sites for oxidation reactions. Both experimental characterization and work function calculations demonstrate that the bimetallic synergism effectively modulates the electronic structure of ZIS, promotes the directional separation of electrons and holes, and significantly improves the photoactivity and stability of ZIS. This work contributes a route to obtain benzaldehyde and green hydrogen at the same time and also gives new insights for the construction and mechanism study of bimetallic-doping catalysts.
研究领域:
材料科学
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催化
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光化学
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2023
·
IF 16.5
Xiao-Juan Li,Ming-Yu Qi,Jing-Yu Li,Chang-Long Tan,Zi-Rong Tang,Yi-Jun Xu
The simultaneous utilization of photogenerated electrons and holes in one cooperative photoredox system for the dehydrocoupling of thiols into value-added disulfides and clean hydrogen (H 2 ) fuel meets the development criteria of green chemistry. Herein, we report the synthesis and application of cocatalyst PdS decorated ZnIn 2 S 4 (PdS-ZIS) composites for photocatalytic coupling of thiols into disulfides and H 2 evolution under visible light irradiation. The superior photocatalytic performance over PdS-ZIS composites compared with blank ZIS is attributed to the function of PdS as oxidation cocatalyst, which dramatically promotes the separation and transfer of photogenerated charge carriers due to its excellent hole trapping ability. In-situ Fourier transform infrared spectra reveal the dynamic variation of reactants on the catalyst surface. Electron paramagnetic resonance technology confirms that sulfur-centered radicals are the key reaction intermediates in this coupling process. Moreover, the application of PdS-ZIS composites to the dehydrocoupling of various thiols with different substituent groups into the corresponding S–S coupling products has been demonstrated to be practicable. This work is expected to offer insights into the rational design of cocatalyst-decorated semiconductor photocatalysts with efficient utilization of photogenerated electrons and holes for the co-production of high-value chemicals and clean H 2 energy in a cooperative photoredox catalysis process.
研究领域:
化学
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY CONVERSION AND MANAGEMENT
·
2024
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IF 9.9
Jiang He,Zhongqing Yang,Ziqi Wang,Jiaqi Qiu,Jingyu Ran
The slow oxidation kinetics of cellulose severely limits photocatalytic cellulose reforming for hydrogen production. Herein, ZIS photocatalysts with different morphologies were prepared and Pt nanoparticles were deposited on their surfaces. The cellulose oxidation kinetics were enhanced through the strategy of photothermal catalysis and pH optimization, which led to efficient hydrogen generation. The ultrathin nanosheet structure endows 1 % Pt/ZIS-300 with a stronger photogenerated carrier separation ability than 1 % Pt/ZIS-0 (nanoflower) and facilitates ·OH generation. Heat can induce the production of ·OH from 1 % Pt/ZIS-300 and enhance the adsorption of 1 % Pt/ZIS-300 to cellulose by changing the surface potential of 1 % Pt/ZIS-300, which promotes the oxidation kinetics of cellulose. As a result, the hydrogen yield of 1 % Pt/ZIS-300 under photothermal catalytic condition (80 ℃) reached 1218 μmol/g cat after 4 h of reaction. Appropriate NaOH concentration contributes to cellulose solubilization and ·OH production, but too high OH − concentration causes a negative shift of the potential on the 1 % Pt/ZIS-300 and cellulose surface, which hinders the mass transfer process and reduces the oxidation kinetics of cellulose.
研究领域:
化学工程
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材料科学
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可再生能源
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2024
·
IF 4.3
Zhenhua Wang,Jin Miao,Tao Tan,Lin Guo,Rongli Gao,Yue Chen,Wei Cai,Chunlin Fu,Xiang Lei
The I-III-VI QDs Ag-In-S (AIS) exhibits excellent properties in photocatalysis because of the adjustable band gap, wide light absorption range, and multiple active sites. Introducing homologous or heterogeneous ions not only derives the composition into quaternary/ quinary quantum dots but also generates new sulfide QDs to form composites, which is an effective strategy to promote photoactivity. In this work, we in-situ synthesized the AIS/ZIS (AgIn 5 S 8 /Zn 4 In 2 S 7 ) composite photocatalyst by introducing Zn 2+ and changing the reaction temperature. We found that the composite photocatalyst could efficiently photodegrade larger concentrations of RhB than that of the previous reports. The superior photocatalytic activity was due to the formation of the type I high-low junction, which could effectively separate carriers. The photoelectrons on the CB of AIS reacted with dissolved oxygen to produce strongly oxidative O 2 – , which degraded RhB into intermediates and eventually into CO 2 and H 2 O. This work not only reports an excellent photocatalyst but also offers new ideas on the design and manufacture of highly efficient high-low junction photocatalysts.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yueru Yan,Yuanyuan Zhao,Yun Lou,Yafei Zhao,Huishan Shang,Yinze Yang,Dan Wang,Bing Zhang
Rational construction of core@shell heterostructured photocatalysts is the key to realize efficient hydrogen production from water splitting attributing to the accelerated photoinduced charges separation/transfer and enhanced light absorption ability. In this work, two-dimensional (2D) ZnIn 2 S 4 (ZIS) nanosheets were in-situ grown on phosphorus doped MnCo 2 O 4.5 (P-MnCo 2 O 4.5 ) nanospheres to construct P-MnCo 2 O 4.5 @ZIS heterostructured photocatalysts for efficient photocatalytic hydrogen production. The optimized 6 wt% P-MnCo 2 O 4.5 @ZIS composite presents remarkable photocatalytic hydrogen evolution rate of 4197 µmol g −1 h −1 (8 times of single ZIS) along with excellent cycling stability, which is comparable to most previous reported ZnIn 2 S 4 -based or even noble-metal involved catalysts. The improved photocatalytic performance is resulted from the distinguished heterostructure and components of P-MnCo 2 O 4.5 @ZIS, in which the close contact interface facilitates the separation/transfer and inhibits the recombination of charges, and the uniform distribution of ZIS nanosheets on P-MnCo 2 O 4.5 increases the active sites and fortifies the light absorption. The present work comes up with a prospective method for establishing core@shell ZIS-based heterostructured photocatalysts for efficient hydrogen generation.
研究领域:
材料科学
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能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Ligang Ma,Yihuan Ding,Tingting Chen,Xinlan Li,Zhiyi Song,Xiaoqian Ai,Xiaoshan Wu
Single-walled carbon nanotubes/ZnIn 2 S 4 (SWCNT@ZIS) nanocomposites with tunable SWCNT content were successfully synthesized via the in situ growth of three-dimensional (3D) ZIS nanostructures on the surface of one-dimensional (1D) carboxylated SWCNTs. Structural and morphological analyses revealed the formation of a robust interfacial connection between the SWCNTs and ZIS nanostructures, with the 3D ZIS uniformly anchored onto the 1D SWCNT framework. This unique architecture facilitates the directional transport of photogenerated charge carriers, significantly enhancing electron transfer and separation efficiency. During the ZIS growth process in an oil bath, partial removal of oxygen-containing functional groups from the carboxylated SWCNTs was verified, which effectively preserves the intrinsic high conductivity of the SWCNTs. Moreover, the incorporation of SWCNTs markedly reduced the agglomeration of 3D ZIS nanostructures, leading to increased specific surface area, higher density of active sites, and improved visible-light absorption. Under visible-light irradiation ( λ > 420 nm), the SWCNT@ZIS nanocomposites demonstrated superior photocatalytic performance to pristine ZIS. The versatile in situ growth strategy on SWCNTs provides a promising approach for designing and fabricating advanced semiconductor SWCNT hybrid materials with tailored properties for photocatalytic applications.
研究领域:
材料科学
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能源科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 42
·22453-22467
·
IF 14.511
Huihua Luo,Lianqing Yu,Kehui Xue,Haifeng Zhu,Yaping Zhang
Photocatalytic water splitting into value-added energy is a promising strategy to resolve the environmental pollution and energy crisis. Herein, we proposed a facile method to design a p–n heterostructure photocatalyst for highly effective and stable visible light-driven hydrogen production. Starting from a framework of metal–organic framework (MOF) derived carbonaceous material (CNCo-Fe3O4) with a spindle-like structure, we demonstrated ultrathin ZnIn2S4 (ZIS) nanosheets grown on the surface of the rich porous CNCo-Fe3O4 spindle-like structure (denoted as CNCo-Fe3O4/ZIS). The intimate coupling between CNCo-Fe3O4 and ZnIn2S4 facilitates charge transfer and inhibits the recombination of electron and hole pairs, resulting in fast reaction kinetics at the heterointerface. Furthermore, the conductivity and structural integrity of the catalysts are further enhanced by MOF-derived carbonaceous materials. Both high H2 yield (2.63 mmol g−1 h−1) and long-term stability are achieved for 5% CNCo-Fe3O4/ZIS heterostructure catalysts under visible-light irradiation (λ ≥ 420 nm), ascribed to the enhanced light absorption capacity, conductivity and charge separation ability. The designed nanoarchitecture may inspire more possibilities for the synthesis of MOF-derived carbonaceous material compositions with semiconductors for wide applications.
研究领域:
材料科学
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能源化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Wenrui Li,Zhanwei Chen,Shaowei Yang,Kai Cui,Xuefei Zhou,Hanbin Li,Fubin Ma,Wenbin Wang,Qiuyu Zhang,Hepeng Zhang
A PPy/ZnIn2S4 (PPy/ZIS) composite photocatalyst has been successfully synthesized using a straightforward in situ growth method and applied to the photocatalytic degradation of phenol. The flaky ZIS material is evenly enveloped around the surface of tubular PPy, forming PPy/ZIS composites. Compared to ZIS and PPy alone, the PPy/ZIS composite exhibits superior electron–hole pair separation performance. Consequently, the PPy/ZIS composite displays a 7.8-fold increase in photocatalytic efficiency compared to pure ZIS nanomaterials, achieving 95% phenol removal within 4 h. The primary active species responsible for phenol degradation are identified as hydroxyl radicals (·OH) and superoxide radicals (·O2–). Additionally, an exploration is conducted into the photocatalytic breakdown mechanism of phenol under full spectrum irradiation, specifically for the PPy/ZIS composite. Remarkably, the PPy/ZIS composite demonstrates excellent photostability during cycling tests, underscoring its potential as an effective photocatalytic material for phenol degradation.
研究领域:
环境科学
·
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·Vol. 14
·期 1
·120487
·
IF 7.2
Jifang Zhang,Chengcheng Suo,Hongru Zhang,Wei Li,Sha Luo,Bing Tian,Chunhui Ma,Shouxin Liu
Constructing an efficient and low-cost electrocatalyst was highly necessary in electrocatalytic lignin depolymerization study. We prepared a unique 1D/2D/1D nanoflower electrocatalyst (Ti 20 @ZIS-Sv@C 0.5 (Ⅱ)) composed of TiO 2 , ZnIn 2 S 4 and C nanosheets by electrostatic self-assembly through solvothermal method. The TiO 2 was located as the core of catalyst and covered by the C deposited ZnIn 2 S 4 nanosheets. The electrochemical impedance (R ct , 248.5 Ω; R L , 6.511 Ω), C dl (1.75817 mF cm −2 ), Tafel efficiency (6.28 mV dec −1 ) and photocurrent intensity (5.23 μA) of Ti 20 @ZIS-Sv@C 0.5 (Ⅱ) exhibited higher electrocatalytic activity than that of original ZnIn 2 S 4 . Under optimized conditions, electrocatalytic process achieved 100 % C α -C β (β-O-4) and C Ar -O (α-O-4) cleavage efficiency and 244.37 mg g −1 benzaldehyde yield. We have further indicated C α -C β (β-O-4) and C Ar -O (α-O-4) cleavage mechanism by Cl-induced radical oxidation pathway. The electrocatalytic depolymerization of G-type lignin could obtained at least 14 molecular products (including 18.21 mg g −1 2-hydroxy-1-phenylethan-one, 11.39 mg g −1 pyrocatechol and 1.25 mg g −1 benzaldehyde). Mechanism investigation suggested the generation of chlorine radical (•Cl), followed by C-H activation and synergistic effect of Ti 20 @ZIS-Sv@C 0.5 (Ⅱ), leading to highly efficient lignin linkages cleavage. This work has developed an efficient electrocatalyst for lignin valorisation to produce aromatics via an electrocatalytic radical pathway.
研究领域:
电催化
·
可再生能源
·
材料科学
·
绿色化学
·
生物质高值化
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）