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Tantalum (Oxy)Nitride: Narrow Bandgap Photocatalysts for Solar Hydrogen Generation Review

Mu Xiao, Songcan Wang, Supphasin Thaweesak, Bin Luo, Lianzhou Wang

Engineering 2017, Volume 3, Issue 3,   Pages 365-378 doi: 10.1016/J.ENG.2017.03.019

Abstract: Tantalum (oxy)nitride-based materials are a class of the most promising photocatalysts for solar waterTantalum (oxy)nitride-based photocatalysts have experienced intensive exploration, and encouraging progressThis review summarizes the development of tantalum (oxy)nitride-based photocatalysts for solar waterThis paper also proposes future trends to explore in the research area of tantalum-based narrow bandgap

Keywords： Tantalum-based photocatalyst     Narrow bandgap     Water splitting     Hydrogen    

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A mini-review of ferrites-based photocatalyst on application of hydrogen production

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 621-630 doi: 10.1007/s11708-021-0761-0

Abstract: Photocatalytic water splitting for hydrogen production is a promising strategy to produce renewable energy and decrease production cost. Spinel-ferrites are potential photocatalysts in photocatalytic reaction system due to their room temperature magnetization, the high thermal and chemical stability, narrow bandgap with broader visible light absorption, and proper conduction band energy level with strong oxidation activity for water or organic compounds. However, the fast recombination of the photoexcited electrons and holes is a critical drawback of ferrites. Therefore, the features of crystallinity, particle size, specific surface area, morphology, and band energy structure have been summarized and investigated to solve this issue. Moreover, composites construction with ferrites and the popular support of TiO2 or g-C3N4 are also summarized to illustrate the advanced improvement in photocatalytic hydrogen production. It has been shown that ferrites could induce the formation of metal ions impurity energy levels in TiO2, and the strong oxidation activity of ferrites could accelerate the oxidation reaction kinetics in both TiO2/ferrites and g-C3N4/ferrites systems. Furthermore, two representative reports of CaFe2O4/MgFe2O4 composite and ZnFe2O4/CdS composite are used to show the efficient heterojunction in a ferrite/ferrite composite and the ability of resistance to photo-corrosion, respectively.

Keywords： photocatalyst     spinel-ferrite     composite     photocatalytic hydrogen production    

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The Development of World Tantalum Powder Technology

He Jilin

Strategic Study of CAE 2001, Volume 3, Issue 12,   Pages 85-89

Abstract:

This article introduces the technology development of capacitor grade tantalum powders including highvoltage tantalum powders, medium voltage tantalum powders and high specific capacitance tantalum powdersMany tantalum powder producers have invented new processes and technology to increase specific capacitance, reducing impurity content and improve the physical properties of tantalum powder so as to meet the

Keywords： tantalum powder     tantalum capacitor     specific capacitance     sodium reduction of potassium fluotantalate    

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Hexavalent chromium in drinking water: Chemistry, challenges and future outlook on Sn(II)- and photocatalyst-based

Haizhou Liu, Xuejun Yu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1267-4

Abstract: . • Sn(II)-based and TiO2-based reductive treatments hold extreme promise. • Key challenges include residualTo overcome these challenges, reductive Cr(VI) treatment technologies based on the application of stannoustin or electron-releasing titanium dioxide photocatalyst hold extreme promise in the future.

Keywords： Chromium     Chemistry     Treatment     Future outlook    

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One-pot hydrothermal fabrication of BiVO/FeO/rGO composite photocatalyst for the simulated solar light-driven

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1470-y

Abstract:

• BiVO4/Fe3O4/rGO has excellent photocatalytic activity under solar light radiation.

Keywords： Photocatalysis     Ternary magnetic photocatalyst     Visible-light-driven     Free radicals trapping     Reusability    

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Progress of Tantalum & Niobium Industry in China

He Jilin

Strategic Study of CAE 2003, Volume 5, Issue 5,   Pages 40-46

Abstract:

This article introduces the development of tantalum & niobium industry in China and in the world, especially reviews the metallurgical and working technology development of tantalum & niobium inInview of the development condition and economic status of Chinese tantalum & niobium industry in

Keywords： tantalum & niobium industry     technology     continuative development     market    

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Efficient photoelectrochemical oxidation of rhodamine B on metal electrodes without photocatalyst or

Xuejiao Wang, Xiang Feng, Jing Shang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1061-8

Abstract:

•The efficient PEC degradation of RhB is realized using no photocatalyst

Keywords： Energy relay structure     Energy saving     Photocatalyst-free and low-salinity degradation     Photoelectrochemical    

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Efficient flower-like ZnSe/CuZnS photocatalyst for hydrogen production application

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1301-1310 doi: 10.1007/s11705-022-2295-3

Abstract: In this work, a high-efficiency flower-like ZnSe/Cu0.08Zn0.92S photocatalyst was

Keywords： photocatalysis     Cu0.08Zn0.92S     ZnSe     hydrogen production    

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All-inorganic TiO/CsAgBiBr composite as highly efficient photocatalyst under visible light irradiation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1925-1936 doi: 10.1007/s11705-023-2344-6

Abstract: In recent years, limited photocatalysis efficiency and wide band gap have hindered the application of TiO2 in the field of photocatalysis. A leading star in photocatalysis has been revealed as lead-free Cs2AgBiBr6 double halide perovskite nanocrystals, owing to its strong visible light absorption and tunable band gap. In this work, this photocatalytic process was facilitated by a unique TiO2/Cs2AgBiBr6 composite, which was identified as an S-cheme heterojunction. TiO2/Cs2AgBiBr6 composite was investigated for its structure and photocatalytic behavior. The results showed that when the perovskite dosage is 40%, the photocatalytic rate of TiO2 could be boosted to 0.1369 min–1. This paper discusses and proposes the band gap matching, carrier separation, and photocatalytic mechanism of TiO2/Cs2AgBiBr6 composites, which will facilitate the generation of new ideas for improving TiO2’s photocatalytic performance.

Keywords： Cs2AgBiBr6 nanocrystals     visible-light photocatalyst     Cs2AgBiBr    

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A simple and cheap method for preparation of coupled ZrO2/ZnO with high photocatalytic activities

WANG Zheng, ZHANG Bingru, LI Fengting

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4,   Pages 454-458 doi: 10.1007/s11783-007-0072-7

Abstract: The objective of this study was to prepare a new photocatalyst with high activities for degradation ofCoupled ZrO/ZnO photocatalyst was prepared with a simple precipitation method with cheap raw

Keywords： objective     ZrO/ZnO photocatalyst     photocatalyst     precipitation     degradation    

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Recent advances in special morphologic photocatalysts for NO removal

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1573-0

Abstract:

● Systematic information of recent progress in photocatalytic NO x removal is provided.

Keywords： NOx removal     Photocatalyst     Graphene     C3N4     Bi-based compounds    

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Visible-light-driven heterostructured g-CN/Bi-TiO floating photocatalyst with enhanced charge carrier

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1417-3

Abstract:

• Bi doping in TiO2 enhanced the separation of photo-generated electron-hole.

Keywords： Bi doping     Visible light     Algal removal     Charge carrier separation    

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Photocatalytic water splitting of ternary graphene-like photocatalyst for the photocatalytic hydrogen

Yan Zhang, Yuyan Zhang, Xue Li, Xiaohan Zhao, Cosmos Anning, John Crittenden, Xianjun Lyu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1248-7

Abstract: reports a facile method called the hydrothermal method, which was used to prepare ternary graphene-like photocatalystThe experimental results showed that the ternary graphene-like photocatalyst has a strong photocatalytic

Keywords： Water splitting     Visible light     Graphene-like photocatalyst     Response surface methodology    

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Property-performance relationship of core-shell structured black TiO photocatalyst for environmental

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1711-3

Abstract:

● Properties and performance relationship of CSBT photocatalyst were

Keywords： Black TiO2     Core-shell structure     Property-performance relationship     Agro-industrial effluent     Environmental remediation    

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Preparation of TiO

Shenghung WANG, Kuohua WANG, Jihmirn JEHNG, Lichen LIU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 3,   Pages 304-312 doi: 10.1007/s11783-010-0297-8

Abstract: Titanium dioxide is coated on the surface of MCM-41 wafer through the plasma enhanced chemical vapor deposition (PECVD) method using titanium isopropoxide (TTIP) as a precursor. Annealing temperature is a key factor affecting crystal phase of titanium dioxide. It will transform an amorphous structure to a polycrystalline structure by increasing temperature. The optimum anatase phase of TiO which can acquire the best methanol conversion under UV-light irradiation is obtained under an annealing temperature of 700°C for 2 h, substrate temperature of 500°C, 70 mL·min of oxygen flow rate, and 100 W of plasma power. In addition, the films are composed of an anatase-rutile mixed phase, and the ratio of anatase to rutile varies with substrate temperature and oxygen flow rate. The particle sizes of titanium dioxide are between 30.3 nm and 59.9 nm by the calculation of Scherrer equation. Under the reaction conditions of 116.8 mg·L methanol, 2.9 mg·L moisture, and 75°C of reaction temperature, the best conversion of methanol with UV-light is 48.2% by using the anatase-rutile (91.3/8.7) mixed phase TiO in a batch reactor for 60 min. While under fluorescent light irradiation, the best photoactivity appears by using the anatase-rutile (55.4/44.6) mixed phase TiO with a conversion of 40.0%.

Keywords： photocatalyst     titanium dioxide     MCM-41     plasma enhanced chemical vapor deposition (PECVD)    

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Title Author Date Type Operation

Tantalum (Oxy)Nitride: Narrow Bandgap Photocatalysts for Solar Hydrogen Generation

Mu Xiao, Songcan Wang, Supphasin Thaweesak, Bin Luo, Lianzhou Wang

Journal Article

A mini-review of ferrites-based photocatalyst on application of hydrogen production

Journal Article

The Development of World Tantalum Powder Technology

He Jilin

Journal Article

Hexavalent chromium in drinking water: Chemistry, challenges and future outlook on Sn(II)- and photocatalyst-based

Haizhou Liu, Xuejun Yu

Journal Article

One-pot hydrothermal fabrication of BiVO/FeO/rGO composite photocatalyst for the simulated solar light-driven

Journal Article

Progress of Tantalum & Niobium Industry in China

He Jilin

Journal Article

Efficient photoelectrochemical oxidation of rhodamine B on metal electrodes without photocatalyst or

Xuejiao Wang, Xiang Feng, Jing Shang

Journal Article

Efficient flower-like ZnSe/CuZnS photocatalyst for hydrogen production application

Journal Article

All-inorganic TiO/CsAgBiBr composite as highly efficient photocatalyst under visible light irradiation

Journal Article

A simple and cheap method for preparation of coupled ZrO2/ZnO with high photocatalytic activities

WANG Zheng, ZHANG Bingru, LI Fengting

Journal Article

Recent advances in special morphologic photocatalysts for NO removal

Journal Article

Visible-light-driven heterostructured g-CN/Bi-TiO floating photocatalyst with enhanced charge carrier

Journal Article

Photocatalytic water splitting of ternary graphene-like photocatalyst for the photocatalytic hydrogen

Yan Zhang, Yuyan Zhang, Xue Li, Xiaohan Zhao, Cosmos Anning, John Crittenden, Xianjun Lyu

Journal Article

Property-performance relationship of core-shell structured black TiO photocatalyst for environmental

Journal Article

Preparation of TiO

Shenghung WANG, Kuohua WANG, Jihmirn JEHNG, Lichen LIU

Journal Article