Chundong Wang

Huazhong University of Science and Technology | hust · School of Integrated Circuits

Oxygen is the most abundant element in the Earth’s crust. The oxygen reduction reaction (ORR) is also the most important reaction in life processes and energy converting/storage systems. Developing techniques toward high-efficiency ORR remains highly desired and a challenge. Here, we report an N-doped carbon encapsulated CeO2/Co interfacial hollow...

Anodic urea oxidation reaction (UOR) is an intriguing half reaction that can replace oxygen evolution reaction (OER) and work together with hydrogen evolution reaction (HER) toward simultaneous hydrogen fuel generation and urea-rich wastewater purification; however, it remains a challenge to achieve overall urea electrolysis with high efficiency. H...

Metal-organic frameworks (MOFs) show great promise for electrocatalysis owing to their tunable ligand structures. However, the poor stability of MOFs impedes their practical applications. Unlike the general pathway for engineering ligands, we report herein an innovative strategy for leveraging metal nodes to improve both the catalytic activity and...

Constructing multiple heterogeneous structures allows for improving the electrocatalytic activity of NiO by incorporating multiple active sites. Unfortunately, the poor conductivity of NiO makes efficient charge transfer within the heterogeneous structures difficult, thereby inhibiting the improvement of its intrinsic activity. Herein, F‐doped NiO/...

Doping Ru endows optimized electronic structure of NiCo 2 O 4 , which in turn modifies its d-band center towards optimum H* adsorption energy. The as-prepared spinel yields splendid HER, OER and UOR performances.

Exploring highly efficient hydrogen evolution reaction (HER) electrocatalysts for large-scale water electrolysis in the full potential of hydrogen (pH) range is highly desirable, but it remains a significant challenge. Herein, a simple pathway is proposed to synthesize a hybrid electrocatalyst by decorating small metallic platinum (Pt) nanosheets o...

Single-atom catalysts (SACs) have drawn the attention of material scientists due to their high atomic-scale utilization efficiency and excellent thermal catalytic activity and selectivity. Metal oxides stand out as one of the most appealing candidates among the viable scaffold materials for anchoring single atoms due to their compo-sitional and str...

For large-scale industrial applications, it is highly desirable to create effective, economical electrocatalysts with long-term stability for the hydrogen evolution reaction (HER) at a large current density. Herein, we report a unique motif with crystalline CoFe-layered hydroxide (CoFe-LDH) nanosheets enclosed by amorphous ruthenium hydroxide (a-Ru...

The carbon dioxide and carbon monoxide electroreduction reactions, when powered using low-carbon electricity, offer pathways to the decarbonization of chemical manufacture1,2. Copper (Cu) is relied on today for carbon–carbon coupling, in which it produces mixtures of more than ten C2+ chemicals3–6: a long-standing challenge lies in achieving select...

It is of great significance to improve the photo-catalytic performance of g-C 3 N 4 by promoting its surface-active sites and engineering more suitable and stable redox couples. Herein, first of all, we fabricated porous g-C 3 N 4 (PCN) via the sulfuric acid-assisted chemical exfoliation method. Then, we modified the porous g-C 3 N 4 with iron(III)...

The oxygen evolution reaction (OER) is the bottleneck in water electrolysis towards green hydrogen generation because of its sluggish reaction kinetics. Layered double hydroxides (LDHs) and single-atom catalysts stand out as two of the most effective electrocatalysts, and emerge as two frontier research fields in electrocatalysis. Integration of th...

Fully aware of the global water pollution caused by more consumption of antibiotics, we successfully prepared novel brown TiO2−x/Bi4O5I2/carbon dots (B-TiO2−x/Bi4O5I2/CDs) photocatalysts through a facile strategy. The as-prepared samples were specified via XRD, FESEM, UV–vis DRS, XPS, EDS, TEM, HRTEM, FTIR, BET, BJH, EIS, photocurrent, and PL analy...

A vital step towards sustainable hydrogen production is to develop high-efficiency electrocatalysts for pH-universal hydrogen evolution reaction (HER). Modulation of the electronic structure of electrocatalysts by constructing Mott-Schottky heterojunction could be regarded as an effective strategy to promote the electrochemical performances. Herein...

Developing low-cost, high-efficiency and stable electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is crucial but highly challenging. Density function theory (DFT) calculations reveal that doping ruthenium...

Advanced electocatalysts have been designed and reported for water electrolysis. However, significant challenge and gap remains for the design and fabrication of highly efficient, robust yet cost-effective multifunctional catalyst. One of the fundamentals of the effective catalysts lies in the effective active sites capable of lowering the adsorpti...

The design of bifunctional electrocatalysts for hydrogen and oxygen evolution reactions delivering excellent catalytic activity and stability is highly desirable, yet challenged. Herein, we report an amorphous RuO2-encapsulated crystalline Ni0.85Se nanorod structure (termed as a/c-RuO2/Ni0.85Se) for enhanced HER and OER activities. The as-prepared...

Exploring highly efficient, stable and durable electrocatalysts for oxygen evolution reaction (OER) and urea oxidation reaction (UOR) is a challenging task for energy-saving H2 generation during water electrolysis. Herein, a rose-like crystalline/amorphous heterostructure of NiFe2O4/NiO/NF grown on Ni-foam (NF) was synthesized via a simple two-step...

Obtaining highly efficient and structurally stable electrocatalysts for electrocatalytic oxygen evolution reactions (OERs) at anodes by a simple and feasible strategy remains challenging for achieving hydrogen production with low-energy consumption. Herein, we successfully constructed a tri-phase interfacial structure of CoFe alloy/CoFe oxide/cobal...

The electrocatalytic CO2 reduction reaction (CO2RR) and oxygen reduction reaction (ORR) are important approaches to realize energy conversion and sustainable development. However, sluggish reaction kinetics severely hinders the practical application of devices related to these reactions. N-doped graphene (NG) with unique properties exhibits great p...

This work reports the formation of a novel adsorbent, prepared by activating bentonite with cinnamic acid, which is highly efficient to remove dyes from wastewater. The adsorption efficiency of the cinnamic acid activated bentonite was compared with unmodified bentonite by removing methyl orange and rhodamine-B from polluted water. The characteriza...

Design and synthesis of highly active, inexpensive and durable catalyst for simultaneous hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is highly desired for green hydrogen generation. In this work, high conductivity NiTe nanorods are coupled with amorphous CoFe layered double hydroxide (LDH) to achieve a hierarchical [email...

Recently, a great deal of attention has been devoted for introducing new arrays of heterogeneous photocatalysts using various semiconductors to address environmental and energy crises. In the present study, we combined ZnO with Bi4O5Br2 via a hydrothermal route, which showed a substantial ability to activate peroxodisulfate (PDS). The structure, mo...

Fe‐N‐C single‐atom catalysts (SACs) are emerging as a promising class of electrocatalysts for the oxygen reduction reaction (ORR) to replace Pt‐based catalysts. However, due to the limited loading of Fe for SACs and the inaccessibility of internal active sites, only a small portion of the sites near the external surface are able to contribute to th...

A new generation of active-intelligent packaging materials is gradually replacing traditional petroleum-based materials due to their anti-bacterial, visual, and eco-friendly properties. In this study, a novel multifunctional nanocomposite film is fabricated to dynamically monitor the food freshness by immobilizing natural red cabbage extracts (RCA)...

Electrocatalytic urea oxidation reaction (UOR) is regarded as an effective yet challenging approach for the degradation of urea in wastewater into harmless N2 and CO2. To overcome the sluggish kinetics, catalytically active sites should be rationally designed to manuever the multiple key steps of intermediate adsorption and desorption. Herein, we d...

Urea electrolysis is regarded as an effective strategy for addressing energy and environment issues. Here, a hierarchical structure with intimate interfaces derived from two-dimensional metal-organic framework (MOF) was constructed by partial sulfurization for urea oxidation. The sulfurization treatment increases the specific surface area, remarkab...

Hydrogen is an efficient energy carrier alternative to the non-renewable traditional fossil fuels energy. Water electrolysis is a promising technique used for clean hydrogen generation. Usually, the oxygen-evolution reaction (OER) and urea-oxidation reaction (UOR) processes play a vital role in hydrogen production and pollution control. Herein, we...

The development of an efficient, eco-friendly, and low-cost photocatalyst is essential for addressing environmental and energy crises. In this regard, we report novel plasmonic photocatalysts through adorning tubular g-C3N4 with Ag2WO4, Ag, and AgI nanoparticles (TGCN/Ag/Ag2WO4/AgI) fabricated via a facile ultrasonic-irradiation procedure. The TGCN...

Highly efficient photocatalytic water reduction to evolve hydrogen can be achieved by the construction of Z-scheme systems that mimics natural photosynthesis. However, coupling appropriate semiconductors with suitable water reduction potential still remains challenging. Herein, we report a novel Z-scheme system, based on the Au decorated 5,10,15,20...

Spin engineering is recognized as a promising strategy that modulates the association between d-orbital electrons and the oxygenated species, and enhances the catalytic kinetics. However, few efforts have been made to clarify whether spin engineering could make a considerable enhancement for electrocatalytic water oxidation. Herein, we report the s...

In the present work, a series of binary nanocomposites based on ZnO and CuCo2S4 were synthesized through a hydrothermal approach and the corresponding phase, chemical composition, morphology, surface, and optical properties were thereafter characterized. The photocatalytic performance of the materials was explored in the presence of persulfate ions...

Design of high-performance pH-universal electrocatalsts is critical to practical large-scale hydrogen generation as a carbon-neutral fuel, yet challenging. Herein, we report an unique motif with crystalline nickel tellurium nanorods enclosed by amorphous rhodium hydroxide (a-Rh(OH)3/NiTe), formed through a hydrothermal synthesis and a subsequent ch...

The emergence of persistent organic pollutants such as dyes and pharmaceuticals in the aquatic environment has created drastic concerns worldwide due to their toxicity and potential hazards to the environment. Accordingly, non-stoichiometric TiO2/Bi5O7Br nanocomposites were prepared by stirring method as a visible-light-effective photocatalyst for...

Due to the serious energy and environmental issues, hydrogen generation via water splitting has been regarded as a green and promising alternative strategy to the use of fossil fuels.

Photocatalysis is an advanced technique that transforms solar energy into sustainable fuels and oxidizes pollutants via the aid of semiconductor photocatalysts. The main scientific and technological challenges for effective photocatalysis are the stability, robustness, and efficiency of semiconductor photocatalysts. For practical applications, rese...

The photocatalytic performance of g-C 3 N 4 for CO 2 conversion is still inadequate by several shortfalls including the instability, insufficient solar light absorption and rapid charge carrier’s recombination rate. To solve these problems, herein, noble metals (Pt and Au) decorated Sr-incorporated g-C 3 N 4 photocatalysts are fabricated via the si...

In the last decade, a considerable body of literature has been devoted to advanced oxidation processes encompassed peroxy-sulfur species owing to their capacity to generate highly active radicals. These species fulfill two main objectives in AOPs: act as electron-scavengers and give rise to sulfate radicals, which collectively facilitate the oxidat...

Novel TiO2/Bi3O4Br nanocomposites were prepared by hydrothermal approach to develop effective photocatalysts upon visible light for removal of contaminants from water. Different instruments have been used for characterization of physiochemical attributes of the photocatalysts. The results of photocatalytic reactions showed that the binary TiO2/Bi3O...

Herein, novel ZnO/CuBiS2 photocatalysts with p-n heterojunction were fabricated by a facile hydrothermal method and they were utilized for activation of potassium persulfate (KPS) to improve photodegradation of different pollutants under visible light. After adding KPS, ZnO/CuBiS2 (5.0%)/KPS system represented an efficient performance for degradati...

In the present work, ZnO/CuCo2O4 nanocomposite was successfully synthesized through a hydrothermal process and utilized for persulfate (PS)-promoted photocatalytic mitigation of tetracycline hydrochloride (TC) and three dye pollutants under visible light. The characterization of materials was performed by various techniques. Among the binary photoc...

Metal-organic frameworks (MOFs) are generally recognized as promising platforms for energy conversion and storage due to their structural diversity and ligands tunability features, yet there are still challenges before practical applications become possible. Herein, a two-dimensional metal-organic framework (MOF) with mono-coordinated ferrocenecarb...

Clean energy and a sustainable environment are grand challenges that the world is facing which can be addressed by converting solar energy into transportable and storable fuels (chemical fuel). The main scientific and technological challenges for efficient solar energy conversion, energy storage, and environmental applications are the stability, du...

Hydrogen is the most promising alternative energy source in the face of energy crisis, and water splitting is a green strategy for hydrogen generation. The oxygen evolution reaction (OER) is the essential half‐reaction in electrochemical water splitting, and thus development and exploration of electrocatalysts with excellent performance are vital t...

The construction of efficient photocatalysts based on TiO2, with sever activity under visible light, has gained significant attention for the treatment of water contaminations. Therefore in this work, Bi2SiO5 nanoparticles were combined with TiO2 to fabricate binary TiO2/Bi2SiO5 nanocomposites with n-n heterojunction using a facile hydrothermal met...

The Cover Feature shows a facile strategy for the synthesis of NiTe nanorods covered with FeOOH nanosheets. The synthesized NiTe@FeOOH catalyst possesses strong coupling synergetic effect and large surface areas as well as displaying high electrocatalytic activity towards oxygen evolution reaction and urea oxidation reaction, a small Tafel slope an...

It is fairly desired but remains challenging to synthesize metal selenides with nanosized building blocks via simplified approaches which make more active sites exposed to electrolytes for achieving high-efficient electrocatalysts for oxygen evolution reaction (OER). Herein, on the basis of the Kirkendall effect, we developed a simple synthesis of...

Water splitting is a green strategy for hydrogen generation but greatly hindered by the sluggish anodic oxygen evolution reaction (OER). Herein, ultrathin rhodium-doped nickel iron layered double hydroxide nanosheets are successfully synthesized, which exhibit outstanding hydrogen evolution reaction (HER) and OER performance, and advanced overall w...

The Oxygen Evolution Reaction (OER) plays an essential role in hydrogen productionviawater splitting, metal-air secondary batteries, and artificial photosynthesis. Among the various OER catalysts, layered double hydroxides (LDHs) have attracted significant attention due to their compositional and structural flexibility, as well as tenability, and h...

Having a high combustion value (1.4×10⁸ J/kg) with an intrinsically green nature, hydrogen has been widely regarded as the next generation energy alternative to the conventional fossil fuels that have caused severe environmental issues associated with the rapidly increasing CO2 emissions, including global warming, sea level rising and species extin...

Replacing sluggish oxygen evolution reaction with thermodynamically favorable urea oxidation reaction is a promising strategy for hydrogen-generation from water with low-energy consumption. However, the involved six-electron transfer process makes it formidable and seems critical. Hence, exploring high-efficient and low-cost bifunctional catalysts...

Electrolysis is a promising method for storing energy in the form of hydrogen fuel, which is of great importance for the application of renewable energy. Due to the sluggish anodic reaction of water splitting, exploration of high-efficiency and cost-effective electrocatalysts enabling low driving potential for hydrogen generation is highly desirabl...

Highly active and low-cost catalytic electrodes for urea oxidation reaction (UOR) are always crucial for exploration of urea fuel cells. Herein, novel york-shell-structural Ni2P/C nanosphere hybrids (Ni2P/C-YS) are rationally constructed via a hydrothermal method and subsequent phosphidation treatment under different temperature ranging from 250 °C...

Electrochemically splitting water into hydrogen and oxygen plays a significant role in the commercialization of hydrogen energy as well as fuel cells, but it remains a challenge to design and fabricate low-cost and high-efficiency electrocatalysts. Herein, we successfully prepared Ni3Se2/MoSex on nickel foam via a facile electrodeposition method. T...

The dynamic phase transition properties for ferroelectric nanotube under a spin-1/2 transverse Ising model are studied under the effective field theory (EFT) with correlations. The temperature effects on the pseudo-spin systems are unveiled in three-dimensional (3-D) and two-dimensional (2-D) phase diagrams. Moreover, the dynamic behaviors of excha...

Exploration of high-efficient and stable photocatalysts for water splitting has attracted numerous attentions. However, developing a facile and effective approach to enhance the photocatalytic activity for practical applications still battles huge challenges. Here, we report a new fabricated perovskite oxide (Pr0.5(Ba0.5Sr0.5)0.5Co0.8Fe0.2O3) with...

Perovskite oxides have been recognized as one of the most attractive oxygen evolution reaction (OER) catalysts because of their low cost, earth abundance, and robust nature. Herein, one-dimensional porous LaFe1-xNi x O3 (LFNO) perovskite oxide nanofibers (LFNO NFs) are fabricated with a feasible electrospinning route and its further post-calcinatio...

One of the key challenges that hinders broad commercialization of proton exchange membrane fuel cells is the high cost and inadequate performance of the catalysts for oxygen reduction reaction (ORR). Here we report a composite ORR catalyst consisting of ordered intermetallic Pt-alloy nanoparticles attached to a N-doped carbon substrate with atomica...

Exploring high-active catalyst for oxygen evolution reaction (OER) is paramount for efficient and eco-friendly conversion of renewable electricity to hydrogen fuels. In this study, we report a new strategy to significantly enhance the OER activity of Ni3Se4 nanochains via growth of uniformly vertical FeOOH ultrathin nanoneedles on the surface. The...

Rational design and fabrication of SnO2@C composites with tailored structures enables the advanced electrochemical behaviors for the next-generation lithium-ion batteries. Benefiting from the enhanced electronic conductivity and porous structure, the integrated composites deliver the high reversible capacity as well as the outstanding rate capabili...

Highly active and low-cost catalytic electrodes for oxygen evolution reaction (OER) are always crucial for obtaining clean hydrogen energy via large-scale electrolytic water splitting. Herein, endowing the nickel-iron phosphide (NiFeP) nanoprisms with the tunable electronic structures have been carried out by tailoring the energy level of d-band in...

First-row non-precious metal-based catalysts are widely studied and recognized as one of the most potential substitutes for precious metal-based catalysts toward oxygen evolution reaction (OER) for hydrogen generation but still challenging. In this study, a unique class of Co-Fe selenide hollow nanospheres (CoSe@FeSe2) is well-designed through a fa...

For hydrogen generation with water splitting, the sluggish reaction kinetics, the scarcity and costliness of the precious-metal catalysts make their practical applications being a big challenge. Herein, heterogeneous catalysts of [email protected]2 and [email protected] are constructed by coupling ruthenium oxide (RuO2) and nickel-iron layered doub...

Electrocatalysts with high activities towards multiple electrode reactions are scarce and therefore highly sought. Here, we investigate electrocatalytic performance of the two-dimensional (2D) Pt5Se4 monolayer towards hydrogen evolution reaction (HER), oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). Our density-functional theor...

Developing highly efficient and affordable catalysts towards oxygen evolution reaction (OER) is highly desirable, but still faces challenges. Here, we report a novel Fe doped CoP nanocuboid (CoxFe1-xP) via the successive oxidation and phosphidation of the Co–Fe precursor strategy. By preparation and measurement of the control samples, the optimized...

Searching for high-efficient and stable electrocatalyst with low-cost, earth-abundant, and eco-friendly materials are of great interest for the large-scale applications in electrochemical energy systems. Herein, a feasible strategy is developed for boosting the oxygen evolution reaction (OER) kinetics of La0·6Sr0·4Co0·8Fe0·2O3 (LSCF) perovskite oxi...

Exploring high efficient and cost-effective electrocatalysts for oxygen evolution reaction is a determination step towards sustainable green energy applications. Polyoxometalates and layered double hydroxide materials are suggested to be potential catalyst materials; however, those electrocatalytic behaviors are greatly inferior to the state-of-the...

Of the various non-precious catalysts that have been explored thus far, perovskite oxides have attracted much attention due to their intrinsic catalytic activity and structural flexibility. Here we report a new method for enhancing oxygen evolution reation (OER) activity of LaNiO3 perovskite by a thin FeOOH coating. The resulting LaNiO3@FeOOH demon...

Hydrogen, regarded as one of the most promising green and sustainable energy, could be generated by splitting water with electrochemical method. The dilemma of the efficient hydrogen generation is the sluggish kinetics at the anodes for oxygen evolution reaction (OER). Here, a novel catalyst with remarkable enhanced OER activity was prepared by cou...

Designing high efficient and noble-metal free bifuncitional electrocatalysts for both hydrogen and oxygen generation is still critical and challenged. In this study, hierarchical dodecahedral-structured CoP/[email protected] is prepared through a two-step calcination treatment and a solvothermal approach. The metal-organic framework of ZIF-67 is ch...

Single-atom catalysts (SACs) have emerged as one of the most promising alternatives to noble metal-based catalysts for highly efficient oxygen reduction reaction (ORR). While SACs can offer notable benefits in terms of lowering overall cata-lyst cost, there is still room for improvement regarding catalyst activity. To this end, we designed and succ...

Exploitation of earth-abundant, cost-effective and high-efficient bifunctional electrocatalysts for overall water spitting in basic media is highly desirable, yet it remains a big challenge. Here, NiFe Layered-double-hydroxide nanosheet-anchored CoSe nanotubes (composed of plicated nanosheets) supported on Ni foam are prepared through our developed...

Exploring low-cost, high-active, durable electrocatalysts for oxygen reduction reaction (ORR) in fuel cells and metal-air batteries is highly desirable but remains a great challenge. In this work, with the application of a newly developed metal-free nanocasting method, an in-situ mesoporous nitrogen-doped braided-looking carbon nanotube (MNCNT) cat...

CoMoO4 nanoparticles have been successfully in-situ formed and simultaneously embedded within the porous carbon nanofibers (CoMoO4/CNFs) via a facile electrospinning-annealing strategy. The porous CoMoO4/CNFs exhibit a specific surface area of 255.3 m²/g and a pore volume of 0.52 cc/g with average pore diameter of 43.5 nm. The carbon content in the...

Mercury ions can significantly affect the organism and environment even at a very low concentration. Thus, great efforts have been devoted to developing high sensitive electrochemical sensors, especially the one that not only detect the mercury ions but also effective sensitive to thymine-Hg²⁺-thymine in aqueous solution. Metal-organic-frameworks (...

In article number 1803358, Chundong Wang, Yujie Xiong and co‐workers review the rational design of layered double hydroxide (LDH)‐based electrocatalysts for use in the oxygen evolution reaction (OER). LDHs exhibit tunable composition and laminated structure, which allow the accommodation of various intercalated anions and possess an elasticity feat...